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Table 1 Remediation of sites/actual site soils contaminated with PAH in aerobic slurry bioreactors.

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

Matrix Contaminant Remarks Removal Ref.
Soil PAHa:
Pyrene
a) without surfactant
b) Brij 30
a) 63%
b) 70%
[106]
Soil PAHsa - Corynebacterium aquaticum
- Flavobacterium mizutaii
- Mycobacterium gastri
- Pseudomonas aeruginosa
- Pseudomonas putida
- Biosurfactant
93% [92]
Soil
Sandy
PAHsa:
a) Pyrene (358 mg/kg),
b) chrysene (255 mg/kg),
c) benzo [a]pyrene (250 mg/kg)
- PAH-degrading consortium
- 30% (v/v) silicone oil
a) 19 mg L-1 day-1
b) 3.5 mg L-1 day-1
c) 0.94 mg L-1 day-1
[40]
Soil PAHsa a) Clay soil
b) Sand soil
a) 43%
b) 25%
[41]
Estuarine sediments PAHa
Phenanthrene
a) Mixed system
b) Unmixed system
- 7 days incubation
- 5, 10, 15% sediment load
a) 25 – 40%
b) 5 – 20%
[38]
Soil PAHa
Naphthalene
Pseudomonas putida 100% [107]
Waste sludges PAHsa
Pyrene, benzo [a]anthracene, chrysene
Petroleum waste sludges 90% [33]
Soil
Clay 20%
Sand 79%
Organic matter 1%
PAHa
a) Naphthalene (500 mg/kg)
b) Naphthalene (5000 mg/kg)
c) Naphthalene (25000 mg/kg)
Flavobacterium sp. a) 96%
b) 99%
c) 99%
[9]
Actual site soil Complex mixture of PAHsa(~13.0 g/kg) Slurry-phase in the absence and presence of soya lecithin or humic substances at 1.5% w/w 25% (without agents) 58% (with agents) [11]
Actual site soil Complex mixture of PAHsa (~3.7 g/kg) Comparison SB, blade agitated bioreactor and rotary vessel bioreactor SB was capable of the readiest and fastest removal of soil PAHs [8]
Soil PAHa Fluorene Absidia cylindrospora Maltosyl-cyclodextrin 90% [108]
a) Pristine sediment
Clay 9%
Silt 16%
Sand 75%
Organic matter 1.7%
b)Contaminated sediment
Clay 6%
Silt 5%
Sand 89%
Organic matter 5.1%
a) supplemented with PAHsa:
phenanthrene, anthracene, pyrene and fluoranthene (60–70 ppm)
b) PAHsa:
phenanthrene (36.5 ppm)
anthracene (110.2 ppm)
pyrene (350 ppm)
fluoranthene (150 ppm)
Rhodococcus sp. a) 100%
b) >98%
[39]
  1. Notes: aPAHs: Polynuclear aromatic hydrocarbons