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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