1. Project Title: Characterization of dairy waste water and treatment using zinc nanoparticles synthesized
using Azadirachta Indica Neem leaves extract
2. Sub Area: Water Treatment, Food Processing, Nanotechnology.
3. Duration in months: 36 months
4. Total cost:
5. Project Category: Applied Research
6. Principal Investigator: Dr.K.Kannan
Designation: Head of Department
Department: Chemical Engineering
Institute Name: Kongu Engineering College
Address: Perundurai Railway Station Road, Thoppupalayam, Perundurai-638060
Telephone:
E-mail:
Date of Birth:
Sex (M/F): Male
7. Co-Investigator: Mr.S.Yuvaraj
Designation: Assistant Professor
Department: Chemical Engineering
Institute Name: Kongu Engineering College
Address: Perundurai Railway Station Road, Thoppupalayam, Perundurai-638060
Telephone:
E-mail: yuvaraj.chem@kongu.edu
Date of Birth: 12.05.1990
Sex (M/F): Male
Section-B (Technical Details)
1. Project Title: Characterization of dairy waste water and treatment using zinc nanoparticles
synthesized using Azadirachta Indica Neem leaves extract
2. Project Summary:
The goal of this study was to create a novel pretreatment technique for remediating processed dairy
effluent utilizing zinc nanoparticles generated from Azadirachta Indica leaves extract.
Filtered effluent was obtained from a pretty standard dairy factory and characterized the physical
and chemical features such as colour, odour, pH, total solids, total dissolved solids (TDS), total
suspended solids and chemical oxygen demand (COD). As a reducing agent, the effluent was
treated with (Zinc Oxide Nanoparticles) synthesized from Azadirachta Indica leaves extract. X-ray
diffraction and scanning electron microscopy with energy dispersive X-ray spectroscopy were
employed in order to study the NPs.
The crystallinity of the Zinc Oxide Nanoparticles synthesized was discovered to be crystalline, with
grain diameter of 48 nm. The synthesis of Zinc Oxide Nanoparticles was validated by
characterization tests. Within 2 hours, the best NPs dosage was 1.2g, which minimized TDS and
COD in the effluent by 73% and 88%, respectively. The experiment's findings confirmed the
reducing and anchoring characteristics of Zinc Oxide Nanoparticles synthesized from Azadirachta
Indica leaves extract, in complement to wastewater treatment performance.
The findings demonstrated using enhanced Zinc Oxide Nanoparticles to treat processed effluent
can be advantageous. It can also be indicated as an ecologically sound material for wastewater
recovery. Azadirachta Indica leaf extract is an excellent source for Zinc Oxide Nanoparticles
synthesis using ecofriendly methodologies. In the future, biologically synthesized nanomaterials
could prove to be an appealing prospect for wastewater treatment in the food industry.
3.Keywords: Zinc Oxide Nanoparticles, TDS, COD and Azadirachta Indica Extract
Introduction:
Origin of Proposal:
Milk is one of the most vital and varied foods on the planet. The dairy industry is critical to human
life, and the economy of every nation is dependent on the supply of dairy products. Customers want dairy
products to be natural and fresh, but they also demand a diverse range of flavours and optimum functioning.
The most significant aspect in milk processing and the manufacturing of dairy products is hygiene. This
necessitates the use of large amounts of water for cleaning. Waste water is a major pollutant emitted by the
dairy industry. The average volume of waste water in dairies is currently 1.3 l/kg milk. This results in
considerable waste water disposal costs.
Definition of Problem:
The majority of waste water released into bodies of water disrupts the natural equilibrium and degrades
water quality. Milk processing unit effluent comprises soluble organics, suspended particles, and trace
organics, which emit gases that affect flavour and odour, as well as add colour and turbidity. The dairy
sector is one of India's most important food industries. The dairy sector is a significant source of waste
water. Each year, the milk business creates between 3.739 and 11.217 million m3 of waste (i.e. 1 to 3 times
the volume of milk processed). Waste water is produced in milk processing units, primarily during
pasteurisation and homogenization of fluid milk, as well as the preparation of dairy products such as butter,
cheese, milk powder, and so on.
Objective:
To reduce the Total Dissolved Solids and Chemical Oxygen Demand content in dairy wastewater
to reduce effect of polluted effluent.