IN-SITU CHEMICAL OXIDATION
USING JETTING DELIVERY
TECHNOLOGY
Environmental Bio-Systems, Inc.
Jim Jacobs, RG, REA, CHG
Environmental Bio-Systems, Inc.
Overview of Compounds that can
be Oxidized:








MTBE, TBA
Chlorinated solvents (PCE, TCE, DCA)
Polychlorinated Biphenols (PCBs)
Pentachlorophenol (PCPs)
Solvent stabilizers
Free product or hot spots
Fuel hydrodcarbons and BTEX
Pesticides (DDT, DDE, etc.)
Environmental Bio-Systems, Inc.
Chemical Oxidation
BEST MAP FOR SUCCESS:
1) Bench test and chemical evaluation using soil and
groundwater data:
TOC, pH, alkalinity, iron content, contaminant
concentrations, temperatures, other data
2) Pilot Scale Test –field test with soil and
groundwater confirmation testing
3) Full Scale Remediation
Environmental Bio-Systems, Inc.
Selected Remediation Case
Studies:
 In-Situ Oxidation of TCE, PCE in Soil and
Groundwater
 In-Situ Oxidation of Hydrocarbons in
Groundwater
 In-Situ Oxidation of PCE in Soil
 In-Situ Oxidation of Free Product
Environmental Bio-Systems, Inc.
RIP® - Case Study #1
RIP® Chemical oxidation – Low permeability
silty clays; pH > 8.0; 2 ft. centers
Contaminant
TCE, PCE
Medium
Soil and Groundwater
Volume
450 m3
Depth
0 to 6 meters
Treatment Solution H2O2 ;Strong Sulfuric Acid
Reductions
Soil: >90%; Water > 60%
Location
Newark, California
Environmental Bio-Systems, Inc.
RIP® - Case Study #1 - Details
Contaminants: TCE, PCE, 1,2-DCE
 Low permeability soil: silty clay
 Close spacing of RIP probes: 2 foot
centers
 High pH; > 8.0
 Treatment event: about 1 week
 Number of events: 1
Environmental Bio-Systems, Inc.
RIP® - Case Study #1
Soil: VOCs (ppb)
 Average of 93%
reduction in total
VOCs in soils
due to chemical
oxidation, 1
week of
treatment
400
350
300
250
200
150
100
50
0
Dec, 2000
Jan, 2001
#1
#3
Sample Loc.
Environmental Bio-Systems, Inc.
RIP® - Case Study #1
Water: VOCs (ppb)
 Average of 61%
reduction in
groundwater
based on 1
treatment event
500
400
300
200
100
0
Dec, 2000
Jan, 2001
#1
#3
Sample Loc.
Environmental Bio-Systems, Inc.
RIP® - Case Study #2
RIP® In-Situ Chemical Oxidation of Groundwater
Contaminants
TPH - diesel and gasoline
Medium
Groundwater and Soil
3
Volume
Estimated 60 m
Depth
0 to 6 meters
Treatment SolutionH2O2
Reduction
Significant for 4 hours
Location
Napa, ,California
Environmental Bio-Systems, Inc.
RIP® - Case Study #2
In-Situ Chemical Oxidation of Groundwater
x
x
x
x
00
65
3000
2000
1000
35
Tanks
TPH-G
TPH-D
4.
7
x
x
x
x
4000
0
x
x
x
x
5000
0
x
x
x
x
6000
77
Contaminated Zone Monitoring
Wells
Building
Fuel Terminal
Concentrations (mg/L)
7000
0
Building
Before
(Data: Cambria Environmental)
Environmental Bio-Systems, Inc.
After
RIP® - Case Study #3
In-Situ Chemical Oxidation of Soil with PCE
Contaminants
PCE, TCE, DCE, Toluene
Medium
Soil
3
Volume
1,000 m
Depth
0 to 5 meters
Treatment SolutionH2O2
Reduction
> 85%
Location
Tumwater, Washington
Environmental Bio-Systems, Inc.
RIP® - Case Study #3
In-Situ Chemical Oxidation of Soil with PCE
RIP PROJECT
Concentration
15
AVERAGE SOIL
CONCENTRATION OF PCE
13.72
10
5
5.4
0
May-98
5.4
2.97
5.4
PCE (mg/kg)
EPA PRGs*
1.78
Sep-98
Oct-98
Time
* US EPA Residential PRG;
Environmental Bio-Systems, Inc.
(Data MFG, Inc)
RIP® - Case Study #4
In-Situ Oxidation of 1.5 cm of Free Product
RIP PROJECT
Contaminant
TPH - Diesel
Medium
Groundwater
3
Volume
400 m
Depth
0 to 4 meters
Treatment Solution H2O2 and Acid Solutions
Reduction
Free product hot spot
Location
Oakland, California
Environmental Bio-Systems, Inc.
RIP ® – Case Study #4
In-Situ Oxidation of 1.5 cm of Diesel in Groundwater
1.6
1.4
1.2
1
Before
After
0.8
0.6
0.4
0.2
0
Centimeters of Free Product
Environmental Bio-Systems, Inc.
(Data: SECOR International)
In-Situ Soil Washing using
Surfactants
 Solutions
 Surfactants
 Co-Solvents
Free product
 Microemulsion- droplets
of oil in solution
 Move contaminant
toward treatment using
extraction wells
Environmental Bio-Systems, Inc.
Oil
Microemulsion
In-Situ Soil Washing using
Surfactants

Requires extraction
system
Contaminants:
 Heavy Oils
 PCBs
 Free Product
Environmental Bio-Systems, Inc.
Free product
Oil
Microemulsion
Environmental Bio-Systems, Inc.
www.EBSinfo.com
QUESTIONS….
James A. Jacobs, RG, REA, CHG
Tel: 415-381-5195 Fax: 415-381-5816
Email:augerpro@sbcglobal.net
Environmental Bio-Systems, Inc.