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Table 2 Remediation of sites/actual site soils contaminated with pesticides and PCBs in aerobic slurry bioreactors.

From: A review on slurry bioreactors for bioremediation of soils and sediments

Matrix Contaminant Remarks Removal Ref.
Waste activated sludge EPTCa (5 – 6 ppm) a) freely suspended activated sludge
b) immobilized activated sludge
a)35%
b)72%
[109]
Agricultural soil
Clay 56.11%
Silt 23.2%
Sand 20.69%
pH 8.3
Organic carbon 0.6%
γ-HCHb Inoculated with Pseudomonas putida coexpressing cytocrome P-450 cam and luciferase 65% [48]
Soil
Clay 13%
Silt 21%
Sand 66%
pH 7.7
Total carbonates 3%
a) PCBsc (1210 mg/kg)
b) TPHd (11407 mg/kg)
Rhamnolipid production was observed by Pseudomonas aeruginosa a) 98%
b) 99%
[49]
Actual site contaminated soil PCBsc (1547 mg/kg) Inoculated with ECO3 co-culture 21% (without inoculum)
39% (with inoculum)
[47]
Actual site contaminated Soil PCBsc (1547 mg/kg) Inoculated with ECO3 co-culture; optimization of SR configuration 18% (in shake flasks with baffles)
30% (in stirred thank reactor)
[14]
Actual site contaminated Soil PCBsc (350 mg/kg) Inoculated with ECO3 co-culture in the absence and the presence of Cyclodextrins, Quillaya Saponin, Triton X-100 65% (without agents) 80% (with agents) [46]
Soil
Clay 48%
Silt 41%
Sand 11%
pH 7.0
Organic matter 4%
2,4-De (300 mg/kg) With and without sucrose >90% [30]
Soil
Clay 26%
Silt 48%
Sand 26%
pH 7.2
Organic matter 0.8%
DEPf (8 mg/g) a) with native soil microflora
b) with effluent treatment plant microflora
a) 47.9%
b) 75.4%
[22]
  1. Notes: aS-ethyl dipropylthiocarbamate; -hexaclhorocyclohexane; cPolychlrorinated byphenyls; dTotal petroleum hydrocarbons; e2,4-dichlorophenoxyacetic acid; fdi-ethyl phthalate