Journal of Food, Agriculture and Environment

Effect of slurry sequencing batch reactor for bioremediation of TPH contaminated soil

Author(s):

Seyed Mostafa Khezri ^1*, Seyed Hamidreza Fatemi ¹, Maryam Khalilzadeh Poshtegal ², Saber Hasanlou ¹

Recieved Date: 2010-06-10, Accepted Date: 2010-10-22

Abstract:

The bioremediation of contaminated soil was performed on a laboratory scale to study the ability of this method for remediation of TPH contaminated soil. The soil was contaminated by aged petroleum hydrocarbons with concentration of 67,500 mg/kg. The method used to remediation of this contaminated site was Slurry-Sequencing Batch Reactor (SS-SBR). An 8 L bioreactor was operated with a 10% solid concentration (0.1 kg dry soil/ L slurry). Fill period was relatively instantaneous, and draw period lasted approximately 5 min so the react period comprised essentially the entire cycle time. In draw period, a fraction of slurry (10%) was removed from the SS-SBR every two weeks and replaced with untreated slurry. This volumetric replacement strategy provided 90 days HRT. In the soil slurry reactor, about 95% of the 67,500 mg/kg TPH contaminated soil was degraded in 90 days HRT.

Keywords:

Bioremediation, contaminated soil, TPH, SS-SBR

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Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 3&4
Category: Environment
Pages: 1156-1157

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