Hội thảo Khoa học: Môi trường và Năng lượng
BAN TỔ CHỨC TIỂU BAN MÔI TRƯỜNG VÀ NĂNG LƯỢNG
Trưởng Tiểu ban:
GS.VS. Đặng Vũ Minh
Phó Trưởng Tiểu ban:
TS. Vũ Đức Lợi
TS. Đoàn Văn Bình
Ủy viên:
PGS.TS. Tăng Thị Chính
PGS.TS. Nguyễn Thị Huệ
TS. Ngô Tuấn Kiệt
PGS.TS. Trịnh Văn Tuyên
PGS.TS. Vũ Anh Tuấn
Thư ký:
PGS.TS. Đinh Thị Mai Thanh
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
1
Hội thảo Khoa học: Môi trường và Năng lượng
FABRICATION OF COMPOSITE TiO2:N/SILICA GEL FOR
DECOMPOSING ORGANO-CHLORINATED PESTICIDES IN WATER
Nguyen Manh Nghia1,*, Dương Quoc Van1, Nguyen Thi Ha Giang2, Nguyen Thi Hue2
1
Faculty of Physics, Hanoi National University of Education, 136 Xuan Thuy road, Cau Giay
district, Hanoi, Vietnam
2
Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: nghianm@hnue.edu.vn
ABSTRACT
TiO2 doping nitrogen immobile on silica gel (TiO2/SiO2) was synthesized by sol-gel method.
TiO2 particle on SiO2 has anatase crystalline structure. As the XRD, SEM and HR-TEM
images showed, the diameter of TiO2 practical was around 10nm. The results of absorption
spectra indicated that the band gap of anatase TiO2 with Degussa P25 powder was 3.2 eV,
while the band gap of anatase TiO2:N was 2.5 eV. UV-vis spectrums proved that TiO2:N/SiO2
sample can absorb visible light. These results showed the TiO2: N/SiO2 perform of
decomposing DDT under 6 hours UV lighting was 82%.
Keyword: TiO2/SiO2, doping nitrogen, photocatalysis, organo-chlorinated pesticides.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
2
Hội thảo Khoa học: Môi trường và Năng lượng
POTENTIAL OF INDUSTRIAL WASTES AS ALTERNATIVE FUELS
IN CEMENT INDUSTRY
Hoang Quoc Trong1,*, Pham Gia Dien2
1
Centrer for high Technology Development, VAST, 18 Hoang Quoc Viet Road, Hanoi
2
Isntitute of Chemistry, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: trong@htd.vast.vn/ tronghq@gmail.com
ABSTRACT
Vietnam has the amount of industrial wastes about 6 to 7,5 million tons per year. It causes
environmental pollution, adversely affects the life of communities. Cement industry uses
about 6,5 to 8,4 million tons of coal per year, can replace 15% of its fuel amount by using
many resources of wastes from agriculture and industry. The Ministry of Natural Resource
and Environment issued QCVN 41/2011/BTNMT for co-processing of hazardous wastes for
cement kilns, which has made a big opportunity in using "valuable waste resources" as
alternative fuels and contribute to the environmental protection and sustainable development
in Vietnam.
Keywords: Co-processing wastes, alternative fuels, cement
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
3
Hội thảo Khoa học: Môi trường và Năng lượng
EFFECT OF EXTRACELLULAR POLYMERIC SUBSTANCES
EXTRACTION ON REDUCTION AND UTILIZATION OF WASTE
ACTIVATED SLUDGE TO PRODUCE METHANE
Nguyen Tuan Minh *, Trinh Van Tuyen
Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: nguyentuanminh82@gmail.com
ABSTRACT
The management of waste activated sludge (WAS) recycling is a concern that affects the
development of the future low-carbon society, particularly sludge reduction and biomass
utilization. In this study, we investigated the effect of removing extracellular polymeric
substances (EPS), which play important roles in the adhesion and flocculation of WAS, on
increased sludge disintegration, thereby enhancing sludge reduction and methane production
by anaerobic digestion. EPS removal from WAS by ethylenediaminetetraacetic acid (EDTA)
significantly enhanced sludge reduction, i.e., 49% compared with 27.1% of the control at the
end the digestion process. Methane production was also improved in WAS without EPS by
8881 µmol/g dry-weight of sludge compare to 5724 µmol/g dry-weight of sludge without EPS
removal. Microbial activity was determined by denaturing gradient gel electrophoresis and
real-time polymerase chain reaction, which showed that the hydrolysis and acetogenesis
stages were enhanced by pretreatment with 2% EDTA, with a larger methanogenic
community and better methane production. The results of the study might open a new
direction in WAS management, treatment and renewable energy recover.
Keywords: extracellular polymeric substances, methane production, sludge disintegration,
waste activated sludge.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
4
Hội thảo Khoa học: Môi trường và Năng lượng
SYNTHESIZING POLYURETHANE PLASTICS FROM RECYCLED
PRODUCTS OF POLYCARBONATE WASTES
PART 1: SYNTHESIZING BIS-HYDROXYPROPYL BISPHENOL A
FROM RECYLCLED PRODUCT OF POLYCARBONATE WASTES
Tran Thi Thanh Van 1, Le Thi My Hạnh 1, Nguyen Thi Thai 1, Nguyen Tuan Anh 1
Ho Ngoc Minh 2, Nguyen Duy Toan 2
1
2
Institute for Tropical Technology VAST, 18 Hoang Quoc Viet Road, Hanoi
Post-graduate in Chemistry Department – University of Science – Vietnam National
University
*
Email: tran_thanh_van_1959@yahoo.com
ABSTRACT
In this article it is presented the procedure of synthesising polyester polyol from Bishydroxylpropylbisphenol A. The procedure is followed into two steps. In the first step, waste
polycarbonates are hydrolysed in toluene solvent with propylene glycol (PG), catalysed by
Na2CO3 at 180oC for 60 mins. In step 2, the product obtained in step 1 has been alkoxylized
with urea and ZnO added at 180oC for 4 hours. Reaction ratio can be reached more than 90%.
Physical properties of products have been studied by IR spectroscopy and NMR. It is pointed
out the structure in quite agreement to those of bishydroxypropylbisphenol A. Beside of the
scientific and economical means; our research has found the highly effective solution in
recycling polycarbonates in limitation of environmental pollution.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
5
Hội thảo Khoa học: Môi trường và Năng lượng
SYNTHESIZING POLYURETHANE PLASTICS FROM RECYCLED
PRODUCTS OF POLYCARBONATE WASTES
PART 2: SYNTHESIZING POLYESTER POLYOL FROM BISHYDROXYPROPYL BISPHENOL A WITH GLYCERINE AND ADIPIC
ACID
Tran Thi Thanh Van 1, Ho Ngoc Minh 2, Nguyen Duy Toan 2
1
2
Institute for Tropical Technology VAST, 18 Hoang Quoc Viet Road, Hanoi
Post-graduate in Chemistry Department – University of Science – Vietnam National
University
*
Email: tran_thanh_van_1959@yahoo.com
ABSTRACT
In this article it is presented the procedure synthesis of polyester polyol from Bishydroxylpropylbisphenol A recycled from waste polycarbonates (PC). Synthetical details
have been investigated by measuring the changes in acidic index. After 20 hour reacting
reaction mixture has shown the acidic index is 2.1 and –OH group ratio of 80. Physical
properties of polyol polyester products have been studied by IR spectroscopy and NMR. By
permeating chromatography method, it is determined of the average molecular mass of
product approaching the value of 6910 amu.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
6
Hội thảo Khoa học: Môi trường và Năng lượng
ISOLATION AND CHARACTERIZATION OF STARCH DEGRADING
BACTERIA FROM NOODLE PRODUCTION VILLAGES APPLYING
WASTEWATER TREATMENT
Hoa Nguyen Thi1; Chinh Tang Thi1; Hieu Phung Duc1, Mai Anh Dang1,
Nguyen Nguyen Sy1, Anh Nguyen Ngoc2
1
Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi
2
University of Science – Vietnam National University
*
Email: tangthichinh@gmail.com
ABSTRACT
Starch degrading bacteria are most important for industries such as food, textile, paper and
wastewater treatment processes. Amylase production from bacteria plays a vital role in
treatment and clean the wastewater from noodle production villages in which the starch is the
most abundant. This study was aimed to isolating and charactering the best amylase
producing strains and as well as optimizing growth condition in wastewater treatment. Forty
three bacterial strains isolated from wastewater of noodle production villages and 23 strains of
these were found with starch degrading abilities. PD17 strain was the best amylase
biosynthesis bacteria. Characterization features of potential PD17 strain that showed a Gram
positive, rod-shape, aerobic bacteria was identified as Bacillus subtilis by morphological
methods and by API 50 CHB/E kit. The optimum temperature and initial medium pH for
amylase synthesis by the PD17 strain were 350C and 7.0 respectively. The starch degrading
bacterial density in the sludge which included PD17 strain reached over 109CFU/ml after one
week expriment.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
7
Hội thảo Khoa học: Môi trường và Năng lượng
THE EFFECT OF NANOPARTICLES ON GROWTH OF
CYANOBACTERIA STRAIN MICROCYSTIS AERUGINOSA
Tran Thi Thu Huong1,2, Duong Thi Thuy1, Ho Tu Cuong1, Dang Dinh Kim1, Ha Phuong
Thu3, Dao Trong Hien1, Nguyen Hoai Chau1, Le Thi Phuong Quynh4, Dinh Thi Hai
Van5, Trinh Quang Huy5
1
Institute of Environmental Technology, Vietnam Academy of Science and Technology
2
Faculty of Environmental, Hanoi University of Mining and Geology
3
Institute of Materials Science, Vietnam Academy of Science and Technolog
4
Institute of natural products chemistry, Vietnam Academy of Science and Technology
5
Faculty of Environmental, Vietnam National University of Agriculture
*Email:
ABSTRACT
The aim of the present study was to investigate the influence of silver and copper
nanoparticles on Cyanobaeria strain Microcystis aeruginosa. The silver (10nM) and copper
(20 -50 nm) nanoparticles were synthesized by chemical reduction methods. Characterizations
of these nanoparticles were determined by X-ray diffraction (XRD), Transmission electron
microscopy (TEM) and UV - VIS methods. Silver and copper nanoparticles show growth
inhibition against M. aeruginosa. At concentration of 1 and 5 mg/L of silver and copper
nanoparticles, maximum anti-algal activity was observed.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
8
Hội thảo Khoa học: Môi trường và Năng lượng
DEFLUORIDATION BEHAVIOR OF HYDROXYAPATITE/CHITOSAN
NANOCOMPOSITE SYNTHESIZED BY CHEMICAL PRECIPITATION
METHOD
Le Thi Duyen1,*, Do Thi Hai 1, Nguyen Viet Hung1,
Nguyen Thu Phuong2 and Dinh Thi Mai Thanh2
1
2
Hanoi University of Mining and Geology, Duc Thang, Bac Tu Liem, Hanoi
Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: leduyen231276@gmail.com
ABSTRACT
Hydroxyapatite/chitosan nanocomposite (n-HAp/ChS) was synthesized by chemical
precipitation method from 0.5 M Ca(NO3)2 + 5% chitosan/2% acetic acide solution and 0.3 M
(NH4)2HPO4 solution at pH 10-11 by using 28% NH3 solution. The obtained n-HAp/ChS
powder had cylinder shape with crystal size of about 17x30 nm and specific surface area of
42.01 m2/g at 180oC. The effect of factors including the contact time, the amount of nHAp/ChS, the solution pH, F- concentration and temperature on the fluoride adsorption
capacity and efficiency was investigated. The defluoridation efficiency obtained 91.357 %,
adsorption capacity 2740.72 mg F-/kg at natural pH, F- concentration of 15 mg/l, temperature
40oC and contact time 30 minutes with n-HAp/ChS mass of 0.25g.
Keywords:
Hydroxyapatite/chitosan
nanocomposite,
fluoride
adsorption,
chemical
precipitation.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
9
Hội thảo Khoa học: Môi trường và Năng lượng
APPLICATIONEFFECTIVE MICROBIAL PREPARARIONSIN
COMPOSTING MUNICIPAL SOLID WASTE ANDPRODUCTION
MICROBIAL ORGANIC FERTILIZER
Tang Thi Chinh*, Dang Mai Anh, Nguyen Thi Hoa, Phung Duc Hieu,
Nguyen Minh Thu, Nguyen Sy Nguyen
Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: tangthichinh@gmail.com
ABSTRACT
In recent years, industrialization and urbanization has been taking place rapidly and municipal
solid wastes are also increasing significantly with time. This paper concentrated to evaluate
the ability of Effective Microorganism in composting of municipal solid
waste and to
produce microbial-organic fetilizer. The addition of thermophilic microbial preparation SagiBio makes to short the processing time under 20 days, simultaneously reduces the H2S and
NH3 in this processing. The microbial-organic fertilizer exceeded the Circular on guidelines
No 41/2014 BNNPTNT for microbial - organic fertilizer produced from solid wastes. Using
microbial organic fertilizers produced from waste had effective for reclamation and increasing
crop yields (11 – 19% for rice, cabbage and tea yields). Additionally, the quality of vegetables
using these organic compost produced from municipal solid wastes were satisffied for food
safety (not contain pathogenic microorganisms and heavy metals).
Keywords: municipal solid waste, Sagi Bio - Effective Microorganism, fertilizer, crop yield
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
10
Hội thảo Khoa học: Môi trường và Năng lượng
APPLICATION OF COMBINE COAGULATION – FLOCCULATION
WITH FENTON/UV PROCESS ON TREATMENT OF TO LICH
RIVER’S WATER
Dinh Viet Son, Nghiem Minh Hoa, Pham Tran Thuy Tien,
Dao Thanh Tung, Le Phuong Thu*
University of Science and Technology of Hanoi (USTH), 18 Hoang Quoc Viet Road, Hanoi
*Email: lephuongthu@gmail.com
ABSTRACT
Studies on To Lich River indicated that the water is heavily polluted by untreated urban
wastewater. Pollutants discharged into the river have negative impacts on aquaculture in
downstream area. This study examines the optimal conditions of coagulation process applied
for To Lich River’s water by conventional and polymeric coagulants. The highest percent
removal efficiency of turbidity and natural organic matter (NOM) obtained at 180 mg/L of
ferric salt and 150 mg/L of alum at the pH range 5 -7; 30 mg/L of poly aluminium chloride at
pH of natural water. Poly aluminium chloride is superior over conventional ferric chloride and
alum coagulants in terms of pH independence, lower dosage and less sediment. With the
addition of Fenton/UV oxidation process as combined method, the COD removal and
deodorisation was significantly improved. These results suggest that an integrated approach
may be exploited for optimized treatment on To Lich River’s water.
Key words: aluminium sulfate, coagulation and flocculation process; Fenton/UV; ferric
chloride; poly aluminium chloride.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
11
Hội thảo Khoa học: Môi trường và Năng lượng
INFLUENCE OF pH ON THE EFFECTIVENES OF THE TREATMENT
OF COD IN DOMESTIC WASTEWATER
BY MODIFIED ECO-BIO-BLOCK
Hoang Luong*, Trinh Van Tuyen, Tang Thi Chinh, Dang Thi Thuy Nguyen
Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi
*Email: independenthanoivn@yahoo.com
ABSTRACT
Institute of Environmental Technology, Vietnam Academy of Science and Technology has
been approaching the Eco-Bio-Block (EBB) prototype from Japan for water treatment.
In this study, the method to manufacture the EBBs, modified based on the materials and
microorganisms available in Vietnam for COD removal from wastewater was developed.
Besides the ability to adsorb and absorb some pollutants, the modified EBB products contains
microorganisms that are capable of actively decomposing organic substances and nutrients in
the water.
For the experiment, the wastewater taken from a sewer from the residential area in Nghia Do
ward (Cau Giay district, Hanoi), connecting to To Lich river, which has COD concentration
ranging from 150 to 350 mg/L. Total weight and volume of the modified EBBs used are
approximately equal 1.6% and 3% of those the waste water in the experiment basin.
The assessment of the treatment capacity of the modified EBBs has been performed with pH
in the wastewater varied from 4 to 10. The experimental results showed that with the pH
range from 7 to 8, the COD removal efficiency of modified EBBs reached nearly 90%.
From these results, it is suggested to conduct further investigation of EBBs in order to find
technical solutions for domestic wastewater treatment handling at a low cost. Moreover, this
method could be applied to other types of wastewater in Vietnam.
Keywords: Eco - Bio - Block, The modified EBB, Bacillus natto.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
12
Hội thảo Khoa học: Môi trường và Năng lượng
EFFICIENCY OF REMOVING NH4+, NO3-,NO2- IN ACID MINE
DRAINAGE IN MAO KHE OF THE SYSTEM COMBINING
LIMESTONE, SAWDUST AND MICROORGANISM
Nguyen Hoang Nam; Cong Tien Dung
Hanoi University of Mining and Geology, Duc Thang, Bac Tu Liem, Hanoi, Vietnam
*Email:
ABSTRACT
This article presents a novel technology for removing nitrogen compounds such as NH4+,
NO3-, NO2- exists in acid mine drainage (AMD) of the system combining limestone, sawdust
and microorganism in laboratory scale. The anammox, nitrification and denitrification
reactions are combined in nitrogen compounds' removal processes. Two varied reduction
sources - inorganic (sulfide) and organic - are used for the denitrification, which is created in
the hydrolyzation of sawdust and reducing sulfate into sulfur in microbiology system. The
system was operated in 1 year in 3 different phases with the hydraulic retention time of 1,5
days (phase A), 1,1 days, aeration rate 0,3 L/Lmin (phase B) and 1,1 day, aeration rate 0,6
L/Lmin (phase C). In the system, the average concentration of NH4+-N in the inflow varied
from 11,81 to 8,52 mg/L, while in the outflow only remains 4,16, 1,68 and 0,26 mg/L
respectively. The average concentration of ion NO3--N at the inflow approximate 24,44; 17,84
and 37,48 mg/L respectively, however, in the outflow, it reduced to 9,96 mg/L, 3,98 and 3,66
mg/L respectively. The inflow concentration of ion NO2--N is insignificant, although, the ion
concentration reaches 1,28; 0,21 and 0,39 mg/L in the outflow.
Keywords: AMD, NH4+, NO3-, NO2-, S2- COD, sawdust, limestone, bacteria.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
13
Hội thảo Khoa học: Môi trường và Năng lượng
OCCURRENCE AND PHOTO-DEGRADATION OF 9
PHARMACEUTICAL RESIDUES IN EFFLUENTS OF WASTE WATER
TREATMENT PLANTS (WWTP)
BUI Van Hoi1, 2, Patrick Mazellier1
1. Laboratory of physico-toxico chemistry, UMR EPOC, University of Bordeaux 1, France
2. Faculty of water, environment and oceanography, University of Science and Technology of
Hanoi, Vietnam
*
Email: bui-van.hoi@usth.edu.vn
ABSTRACT
Actually, pharmaceutical residuesin the environment have known as the agent to constitute a
health risk for aquatic ecosystems and human. An occurence of 9 active compounds
(diclofenac, ibuprofen, ketoprofen, naproxen, carbamazepin, atenolol, metoprolol, propanolol,
sotalol) was investigated in 4 effluents of WWTP in South-West, France. 32 samples were
collected from 2011 to 2012. These samples has been extracted by using solid phase
extraction (SPE) before analyzing by LCMSMS system. All analyzed compounds were
detected at high rate (>90% of samples) in all samples which concentration has been varied
from some hundred ng/L to some µg/L. The highest concentration were found for atenolol
and sotalol (up to 8µg/L and 10µg/L respectively). In this study, the photo-degradation of
pharmaceutical residues under solar light was also examined. Diclofenac, ketoprofen has
strongly photo-degraded while ibuprofen, carbamazepin, atenolol, metoprolol seems to be
stable againt solar light. The half-life time has measured in both waters (ultrapure - UPW and
river - RW) diclofenac (35 and 36min), naproxen (207 and 175min), sotalol (142 min in river
water) and propanolol (1124 and 236min). However, the photo-degradtion of naproxen,
propanolol and sotalol has been strongly influenced by natural organic matters in water.
Key words: pharmaceutical residues, LCMSMS, photodegradation, effluents, solar light
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
14
Hội thảo Khoa học: Môi trường và Năng lượng
PRELIMINARY STUDY ON ADSORBING FLUORIDE ION (F-) IN
WASTEWATER BY DENATURED NATURAL ORE FROM VIETNAM
Nguyen Thi Hue*, Nguyen Hoang Tung
Institute of Environmental Technology, VAST,18-Hoang Quoc Viet road, Cau Giay, Hanoi
*
Email: nthue2003@iet.ac.vn or nthue2003@gmail.com
ABSTRACT
Laterite ores, having low cost and very high amount in Vietnam, was studied fluorideadsorbing ability. There were 3 methods studied for denaturing Laterite and Pyrolusite in this
paper to be: temprature, acid HNO3 and NaOH. The method using acid HNO3 (1 M, shaking
time for 2 hours) was the best for denaturing Laterite (adsorbing efficiency: 64.4 %, adsorbing
capacity: 32 mg/g). The denatured Laterite optimally adsorbed fluoride at pH to be 2 and in
shaking time to be 150 minutes.
Two wastewater samples were applied to estimte fluoride adsorbed ability of denatured
Laterite. The efficiency for adsorbing fluoride ranged from 49.7 % to 51.2 % and adsorbing
dose was 25.1 mg/g.
Keywords: Laterite ore, denature, adsorb, fluoride, wastewater.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
15
Hội thảo Khoa học: Môi trường và Năng lượng
STUDY OF ABSORPTION AND ION EXCHANGE POSSIBILITIES
WITH HEAVY METAL OF BARI HYDROXYAPATITE NANO POWDER
Vo Thi Hanh1,*, Le Thi Duyen1, Đo Thi Hai1,
Nguyen Thi Thom2 and Đinh Thi Mai Thanh2
1
2
Hanoi University of Mining and Geology, Duc Thang, Bac Tu Liem, Hanoi
Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: vothihanh2512@gmail.com
ABSTRACT
Barium hydroxyapatit nanopowder (abbreviated as BaHAp) was synthesized by chemical
precipitation method from water solution included Ba(OH)2 2.10-2M and H3PO4 3.10-3M at pH
always greater than 10. The analytical results of morphologies, phase composition and
specific surface area showed that the obtained BaHAp powder had crystalline structure,
cylindrical shape with dimensions of about 18x28 nm and specific surface area of 25 m2/g.
The effect of factors including the contact time, the mass of BaHAp, the solution pH and
temperature on the adsorption and ion exchange with ion heavy metal cations (Cu2+, Pb2+,
Cd2+) was investigated. The results, if mass of BaHAp was 1.2g at the temperature 70°C and
pH 4.5 for 30 min, the removal efficiency simultaneously of Pb2+, Cd2+, Cu2+ ions could reach
respectively 94%, 85% và 91%.
Keywords: Ion exchange; Barium hydroxyapatite, heavy metals, precipitation method.
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
16
Hội thảo Khoa học: Môi trường và Năng lượng
STUDY ON UTILIZATION OF HYDROLYZED SAWDUST AND
LIMESTONE FOR REMOVING CROM, NICKEN FROM
WASTEWATER
Bui Thi Kim Anh*, Nguyen Hong Chuyen, Vu Thi Nguyet, Dang Dinh Kim
Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: buianh78@yahoo.com
ABSTRACT
Currently, in many parts of the world as well as in Vietnam, water sources are seriously
contaminated by heavy metals, affecting dramatically the environment and people's health.
Using chemical and physical methods (precipitation, red-oxidation, ion exchange,
coagulation, adsorption, electrochemical method, membrane,...) can be achievable according
to the Vietnam standard (QCVN 40: 2011). But these treatment technologies have high
processing costs due to the use of chemicals and expensive materials while residual chemicals
could cause secondary pollution to the environment. Therefore, finding other methods to
remove Cr, Ni in wastewater with cheap cost, short time and high treatment efficiency is
necessary. In our study, the experiment was conducted using cheap materials such as sawdust
and limestone to determine ability of removing Cr3+, Cr6+, Ni2+ from wastewater. With
different initial concentrations of Cr, Ni ranging in 50-300 mg/l, the remediation efficiency of
these heavy metals has reached more than 99% after 24 hours and the lower heavy metal
concentration is, the higher treatment efficiency can be achieved.
Keywords: sawdust, limestone, Cr, Ni
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
17
Hội thảo Khoa học: Môi trường và Năng lượng
RESEARCH ON EXPERIMENT ADSORPTION AND ARSENIC
REMOVAL BY MODIFICATION STEEL SLAG
Tran Thi Thu Trang1, 2, *, Yang ChangMing1, Shen Shuo1
1
2
College of Environmental Science and Engineering, Tongji University, China
Institute of Marine Environment and Resources, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: thithutrang.tran@yahoo.com
ABSTRACT
Research included steel slag as adsorbent and remove environmental pollutants is a priority
direction in the trend "use waste treatment waste”, because steel slag is one of the solid waste
harmful to the environment the danger level. During study of steel slag adsorption and
removal As, we make new experiments aimed at reforming existing of steel slag to modify
steel slag efficient adsorption and arsenic removal in water. Results compared adsorption
features and efficient arsenic removal between modified steel slag and unmodified steel slag
shows: modified by acid then its dramatically reduced; modified by alkaline then its
increased; modified by salt then its mitigated; modified by high temperature activation then
its clearly increased; modified by organic loading capacity its also increased clearly. Thus, in
the process of experiment modification steel slag properties not always bring good results, but
we will continue working to find the best methods to enhance the adsorption features and
arsenic removal by steel slag, as well as finding the most effective measures for the
prevention and treatment of environmental pollution.
Keywords: steel slag, adsorption, arsenic, solid waste
Kỷ niệm 40 năm thành lập Viện Hàn lâm KHCNVN
18
Hội thảo Khoa học: Môi trường và Năng lượng
EFFECT OF DIFFERENT NUTRITION TYPES ON THE GROWTH AND
HEAVY METAL ACCUMULATION CAPACITY OF VETIVER GRASS
Bui Thi Kim Anh*, Vũ Thị Nguyệt
Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet, Hanoi, Vietnam
*
Email: buianh78.@yahoo.com
ABSTRACT
Studies of heavy metal contaminated soil are sparse in Vietnam, and have focused on physicochemical methods. Nowaday, more and more attention has been paid to the research on
phytoremediation. Heavy metal uptake by suitable plant species depends on many different
environmental factors. Nutrients are one of the most important factors because the plant
growth needs them. In this study, the pot experiments were conducted in 120 days to
understand the effect of different nutrient types on Arsenic (As), Cadmium (Cd), Lead (Pb)
removal capacity of Vetiveria zizanioides L. The results showed that, heavy metal
concentration in the root is higher than that in the front of the grass. The growth and As, Cd
and Pb removal efficiency of Vetiver grass from the soil amended with both inorganic and
organic fertilizer is highest (6 g NPK and 2.5 g Song Gianh per 6 kg soil). The heavy metal
removal ability from the soil of the grass in the control (without fertilizer application) is
lowest, concentration of As, Pb and Cd in the shoot of control is 32.4±3.6, 104.5±15.1 and
0.06±0.01mg/kg, respectively. Translocation factor (TF) in the experiments showed a poor
efficiency for As and Pb (both less than 0.2 in all the treatments), but a quite high TF of Cd
(0.5-0.9).
Keywords: Vetiveria zizanioides L., nutrients, arsenic, cadmium, lead
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Hội thảo Khoa học: Môi trường và Năng lượng
METHODOLOGY FOR RESEARCH ON LONGTERM ENERGY
DEVELOPMENT OF VIETNAM, WITH CONSIDERATION ON
ENERGY SECURITY
Doan Van Binh 1*, Aleksei Edelev 2, Le Tat Tu 1, Nguyen Hoai Nam 1, Tran Thi Tu
Quynh 1, Nghiem Thi Ngoan 1, Luu Le Quyen 1, Nguyen Thi Thu Huong 1, Tran Viet
Hung 1, Le Cong Thinh 1
1
2
Institute of Energy Science, Vietnam Academy of Science and Technology
Melentiev Energy Systems Institute, Siberian Branch of the Russian Academy of Sciences
*
Email: doanbinh@ies.vast.vn
ABSTRACT
The study presents the results of the model on research and development of long-term energy
system development of Vietnam, with consideration on energy security. The model is divides
Vietnam energy system into eight geographical regions. The problem of optimizing the
energy system according to geographical regions is constructed and solved by the linear
planning methodology. Based on the forecast database of three scenarios of socioeconomic
development and data from strategies and master plan of sectorial development including
coal, oil and gas, power, renewable energy, and nuclear power up to 2030, as well as the
sectorial risks, the study combines and calculates 45 scenarios with the Corrective – Module 1
software. The calculating result at baseline energy demand, in which all types of energy – fuel
complex are exploited at baseline productivity amount, up to 2030: Total primary energy
consumption is 186.5 mil.TOE; Total imported energy is 110.43 mil.TOE; Dependency on
imported energy is 51.29% (proportion of imported energy out of total primary energy
demand); Requirement on power generation is 586.94 bil. kWh; Total cost for energy system
is 166.49 bil. USD (USD 2010).
Keywords: energy system, energy security, optimization, scenario
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Hội thảo Khoa học: Môi trường và Năng lượng
TO STUDY THE EFFECT OF THE INSULATION TO THE
TRANSITIONAL CHARACTERISTICS OF HIGH VOLTAGE
UNDERGROUND CABLES USING XLPE INSULATED
Nguyen Duc Minh1, *, Nguyen Tung Linh2, Trinh Trong Truong3
1
Institute of Energy Science, Vietnam Academy of Science and Technology
2
Electric Power University
3
Hanoi University of Industry
*
Email: ndminh@ies.vast.vn
ABSTRACT
Most high-voltage underground cables are composed of many layers of insulation and
protection; therefore; the study of transients in high-voltage underground cables is
complicated, which requires the accurate description of the transition’s impact on the
underground cable. This paper presents the method of mathematical modeling and simulation
of high voltage underground cable in the transition state by describing the precise components
including conductor, insulator, semiconductor layer and armor in analysis of cable transition.
The study results are calculated for a modeling grid with the EMTP software.
Keywords: Underground cables, transients, conductor, insulator, semiconductor layer, armor.
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Hội thảo Khoa học: Môi trường và Năng lượng
RENEWABLE ENERGY SUPPLY (PV) INTEGRATION WITH
BUILDING ENERGY MANAGEMENT: MODELING AND
INTELLIGENT CONTROL OF ELECTRICAL STORAGE
Dinh Van
Dang Hoang Anh1,*, Nguyen Dinh Quang 2, 3,
Benoit Delinchant4, Frederic Wurtz4, Nguyen Xuan Truong3
Binh4,
1
1
Institute of Technology, Hanoi University of Industry (HIT)
Institute of Energy Science, Vietnam Academy of Science and Technology (VAST)
3
University of Science and Technology of Hanoi (USTH)
4
Grenoble Electrical Engineering Laboratory (G2Elab)
*
Email: danghoanganh@haui.edu.vn
ABSTRACT
In building energy management, the electrical storage is important to ensure power supply
continuity and reduce cost of electrical consumption. Therefore, an electrochemical battery
model is highly recommended for our main objectives, which can contribute to simulate the
impact of electrical storage in the building. In our framework, we have developed a complete
solution for the electrical optimal management, including prediction, optimization, and realtime management of an electrical storage system with photovoltaic generation. We firstly
present the models required to predict consumption patterns, production and storage. Then,
under our experimental platform, we detail the predictive control algorithm, monitoring
solutions and equipment control, as well as the results obtained. In near future, this research
will be applied for the “Micro Smart Grid Development and Application for Building Energy
Management” project (USTH, HIT, G2Elab and VAST).
Keywords: building energy management, electrical storage, renewable energy, demand
response, energy autonomy.
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Hội thảo Khoa học: Môi trường và Năng lượng
OPERATING ONLINE DISTRIBUTION GRID CONNECTED
DISTRIBUTED GENERATION, CONSERDING RECONFIGURATION
COSTS AND THE COST OF ENERGY LOSS
Trinh Trong Chuong1, *, Đoan Van Binh2
1
2
Hanoi University of Industry
Institute of Energy Science, Vietnam Academy of Science and Technology (VAST)
*
Email: chuonghtd@gmail.com
ABSTRACT
This paper presents an online method of operating the electricity distribution grids with
distributed generations. This method is based on the reconfiguration problem online
distribution grid with distributed generations, considering the impact of the change and the
load capacity of distributed generations in sub-graph load typical day. In this paper
constructed a cost function CL deviation based on the analysis of costs when operating the
power grid configuration changes to the cost of power loss. Based on CL function will make
the decision to operate in the process of selecting grid distribution profile taking into account
the distributed generations.
Keywords: reconfiguration; DG; energy loss; grid; online
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Hội thảo Khoa học: Môi trường và Năng lượng
POTENTIAL AND SOLUTION FOR SAVING ENERGY IN STEEL,
CEMENT AND PAPER PRODUCTION IN VIET NAM
Do Binh Yen*, Nguyen Thi Dung, Pham Thi Hanh
Institute of Energy Science, Vietnam Academy of Science and Technology (VAST)
*Email: dobinhyen@ies.vast.vn
ABSTRACT
The article presents briefly some results from a research conducted by the Institute of Energy
Science on the theme “Assessment of the current energy consumption of steel, cement and
paper production industries in Viet Nam; Recommendations for saving and efficient use of
energy”. These are large production industries, consuming the most energy. In 2011, they
consumed energy equivalent to 305,630 TJ or 7,301 ktoe; green-house gas emission
equivalent to 8,762 ktCO2. The total potential of saving energy of these industries was about
94,686 TJ or 2,262 ktoe. In which, steel industry accounts for 17.7%, cement industry
accounts for 72.4% and paper industry accounts for 9.9%. Results from the research were
used for the White Paper on Energy Efficiency & Climate Change Mitigation (EE & CC) –
VBCSD/ VCCI Recommendations to the Government of Vietnam in 2014.
Keywords:
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Hội thảo Khoa học: Môi trường và Năng lượng
APPLICATION OF BIOTECHNOLOGY FOR FRUIT AND
VEGETTABLE PROCESSING WASTES TREATMENT IN ORDER FOR
REDUCING ENVIRONMENTAL POLLUTION AND PRODUCING
BIOGAS
Nguyen Thuy Nga1,*, Nguyen The Trang2, Pham Van Duy1,
Bui Bao Hung1, Cu Thi Thanh Huyen1
1
Institute of Energy Science, VAST. 18 Hoang Quoc Viet, Cau Giay, Hanoi
Institute of Biotechnology, VAST. 18 Hoang Quoc Viet, Cau Giay, Hanoi
2
*Email: nguyenthuynga@ies.vast.vn
ABSTRACT
Vietnam’s cultivation sector has been developing, with variety of vegetables and fruits, which
can be harvested throughout the year to meet domestic and exporting demand. The amount of
waste from the production and processing of this sector is large and increasing. This is also an
abundant source of raw materials, which can be used for energy production. This paper
presents the application of microbial strain isolated in Vietnam to metabolize the slightly
soluble polymeric compounds into soluble low-molecular compounds as feedstock for biogas
plants. After 21 days of incubation, the levels of cellulase, pentoza and lignin significantly
reduce; the substances dissolving in cold water increase by 43.32 %. Using soluble lowmolecular compounds for biogas tank results the gas composition of 57.8 % of CH4, 36.3% of
CO2, which is suitable for burning for heating and electricity generation.
Keywords: culture conditions, fruit processing wastes, fermentation, biogas.
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Hội thảo Khoa học: Môi trường và Năng lượng
RESEARCH OF PRODUCING AND BURNING F.O-WATER
EMULSION FOR ENERGY SAVING
Ngo Tuan Kiet1,*, Nguyen Xuan Sanh1, Truong Nguyen Tuong An1, Hoang Hong Viet1,
Nguyen Thuy Nga1
1
Institute of Energy Science, VAST, 18 Hoang Quoc Viet Road, Hanoi
*
Email: ngotuankiet@ies.vast.vn
ABSTRACT
The paper presents the result of pilot producing and burning the water - FO emulsion by a
Belarusian originated technology at the Institute of Energy Science under the national pilot
production project of "Pilot manufacture of water - FO emulsion production equipment for
energy efficient when start-up and combined burning in coal fired power plant",
Code: KC.05.DA.04/11-15. The equipment system of producing water - FO emulsion was
pilot manufactured, and the water - FO emulsion was tested burning. The results showed that
the produced emulsion has the water proportions of 10%, 17.5% and 22.5%, which met the
standard of the Belarusian technology. When being tested burning in the FO fired boiler of
Dong Giao Food Export Company, the emulsion is stably burned and showed its potential of
being applied in Vietnam practical conditions.
Keywords: F.O-water emulsion, emulsion manufacturing equipment, Institute of Energy
Science-IES; Pilot production project.
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Hội thảo Khoa học: Môi trường và Năng lượng
ESTABLISHING THE SYNTHETIC CURVE OF EQUIPMENT WAVE
ENERGY CONVERTED INTO ELECTRICITY WITH STABLE POWER
SUPPLY AND HIGH CAPACITY REQUIREMENTS BY WAVE
CHAMBER
Nguyen Binh Khanh*, Truong Nguyen Tuong An, Luong Ngoc Giap
Institute of Energy Science, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi
*
Email: nguyenbinhkhanh@ies.vast.vn
ABSTRACT
Synthetic curve of equipment wave energy converted into electricity with stable power supply
and high capacity requirements by wave chamber will reflect the capacity of the model to the
varie workspace (wave regime) according to the wave conditions (wave period, wave length,
wave height). The construction of the synthetic curve is not the basis of the energy equation,
but also need experimental studies. The article refers to the theoretical foundations and
empirical characteristics in constructing synthesis curve of equipment wave energy converted
into electricity with stable power supply and high capacity requirements by wave chamber
matching wave regime of coastal areas in Thanh Hoa province. The article is the result of the
research: "Research design, test pattern generator stable, high performance wave energy"
under the direction of priorities science and technology: Environment and Energy, VAST
codes 7:04/14-15.
Keywords: Synthetic characteristic curve, wave cycle, wave length, wave height, by wave
chamber, high performance.
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Hội thảo Khoa học: Môi trường và Năng lượng
STUDYING FABRICATION OF CATALYSTS FOR BIOMASS
GASIFICATION
Nguyen Hong Anh1, Nguyen Thi Lan Anh1, Tran Van An2, Uong Van Vy2,
Nguyen Hoai Nam1, Doan Van Binh1, Le Xuan Que2
1
2
Institute of Energy Science, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi
Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi
*Email:
ABSTRACT
Gasification of biomass fabricating syngas fuels has contributed to expand applicability of
solid biomass fuel. However the byproduct tar of the gasification largely limited the
effectiveness. This paper presents a possibility using Fe – catalysts during gasification in
order to reduce the tar and increase the gas quality.
The catalysts have been fabricated by two techniques: pyrolysis and milling. Properties,
structures, particle dimension have been examined. The suitable condition has been chosen
for effective fabrication. The studied catalysts will be applied together with ourselves
constructed gasifier which is integrated a generator.
Keywords:
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Hội thảo Khoa học: Môi trường và Năng lượng
BIOTECHNOLOGY POTENTIAL OF PRODUCTION HYDROGAS
FROM STRAW USE OF NEW ENERGY SOURCES
Nguyen Hoang Nam, Cong Tien Dung
Hanoi University of Mining and Geology, Duc Thang, Bac Tu Liem, Hanoi, Vietnam
* Email:
ABSTRACT
This paper presents results of the initial researching process producing hydrogen from straw
using biotechnology. In the medium of enriched microbial biological sludge thermal shocked,
straw is added as carbon source for microorganisms and as materials to create hydrogen,
obtained microorganisms is thermophilic, anaerobic and the best hydrogen producer. In the
condition of temperatures around 55-60°C, the enriched biological sludge were diluted with
the nutrient solution at the rate of 1:4, consist of 130 g/l straw, hydrogen levels obtained after
CO2 and H2S removed reach 17.82% by weight. The study results showed great potential of
biotechnology in the production of hydrogen gas from agricultural waste.
Keywords: straw, hydrogas, microorganisms, thermal shocked
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