Sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulation

The impact of readily biodegradable substrates (sewage and acetate) in bioelectroremediation of hydrocarbons (PW) was evaluated in a bench-scale soil-based hybrid bioelectrochemical system. Addition of bioelectro-stimulants evidenced efficient degradation than control operation. Acetate and sewage w...

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Main Authors: Gunda Mohanakrishna, Riyadh I. Al-Raoush, Ibrahim M. Abu-Reesh
Format: Article
Language:English
Published: Elsevier 2020-09-01
Series:Biotechnology Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2215017X20300813
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spelling doaj-a4f87f1a034f4e798b19f5b5cf58ab062020-11-25T03:22:01ZengElsevierBiotechnology Reports2215-017X2020-09-0127e00478Sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulationGunda Mohanakrishna0Riyadh I. Al-Raoush1Ibrahim M. Abu-Reesh2Department of Civil and Architectural Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, QatarDepartment of Civil and Architectural Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, Qatar; Corresponding author.Department of Chemical Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, QatarThe impact of readily biodegradable substrates (sewage and acetate) in bioelectroremediation of hydrocarbons (PW) was evaluated in a bench-scale soil-based hybrid bioelectrochemical system. Addition of bioelectro-stimulants evidenced efficient degradation than control operation. Acetate and sewage were exhibited power density of 1126 mW/m2 and 1145 mW/m2, respectively, which is almost 15 % higher than control (without stimulant, 974 mW/m2). Increased electrochemical activity was correlated well with total petroleum hydrocarbons (TPH) degradation through addition of acetate (TPHR, 525 mg/L, 67.4 %) and sewage (TPHR, 560 mg/L,71.8 %) compared to the control operation (TPHR, 503 mg/L, 64.5 %). Similarly, chemical oxygen demand (COD) reduction was also enhanced from 69.0 % (control) to 72.1 % and 74.6 % with acetate and sewage, respectively. Sewage and acetate also showed a positive role in sulfates removal, which enhanced from 56.0 % (control) to 62.9 % (acetate) and 72.6 % (sewage). This study signifies the superior function of sewage as biostimulant compared to acetate for the bioelectroremediation of hydrocarbons in contaminated soils.http://www.sciencedirect.com/science/article/pii/S2215017X20300813Petroleum hydrocarbonsSewage supplementationApplied potentialIn situ bioelectroremediationProduced water
collection DOAJ
language English
format Article
sources DOAJ
author Gunda Mohanakrishna
Riyadh I. Al-Raoush
Ibrahim M. Abu-Reesh
spellingShingle Gunda Mohanakrishna
Riyadh I. Al-Raoush
Ibrahim M. Abu-Reesh
Sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulation
Biotechnology Reports
Petroleum hydrocarbons
Sewage supplementation
Applied potential
In situ bioelectroremediation
Produced water
author_facet Gunda Mohanakrishna
Riyadh I. Al-Raoush
Ibrahim M. Abu-Reesh
author_sort Gunda Mohanakrishna
title Sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulation
title_short Sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulation
title_full Sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulation
title_fullStr Sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulation
title_full_unstemmed Sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulation
title_sort sewage enhanced bioelectrochemical degradation of petroleum hydrocarbons in soil environment through bioelectro-stimulation
publisher Elsevier
series Biotechnology Reports
issn 2215-017X
publishDate 2020-09-01
description The impact of readily biodegradable substrates (sewage and acetate) in bioelectroremediation of hydrocarbons (PW) was evaluated in a bench-scale soil-based hybrid bioelectrochemical system. Addition of bioelectro-stimulants evidenced efficient degradation than control operation. Acetate and sewage were exhibited power density of 1126 mW/m2 and 1145 mW/m2, respectively, which is almost 15 % higher than control (without stimulant, 974 mW/m2). Increased electrochemical activity was correlated well with total petroleum hydrocarbons (TPH) degradation through addition of acetate (TPHR, 525 mg/L, 67.4 %) and sewage (TPHR, 560 mg/L,71.8 %) compared to the control operation (TPHR, 503 mg/L, 64.5 %). Similarly, chemical oxygen demand (COD) reduction was also enhanced from 69.0 % (control) to 72.1 % and 74.6 % with acetate and sewage, respectively. Sewage and acetate also showed a positive role in sulfates removal, which enhanced from 56.0 % (control) to 62.9 % (acetate) and 72.6 % (sewage). This study signifies the superior function of sewage as biostimulant compared to acetate for the bioelectroremediation of hydrocarbons in contaminated soils.
topic Petroleum hydrocarbons
Sewage supplementation
Applied potential
In situ bioelectroremediation
Produced water
url http://www.sciencedirect.com/science/article/pii/S2215017X20300813
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AT riyadhialraoush sewageenhancedbioelectrochemicaldegradationofpetroleumhydrocarbonsinsoilenvironmentthroughbioelectrostimulation
AT ibrahimmabureesh sewageenhancedbioelectrochemicaldegradationofpetroleumhydrocarbonsinsoilenvironmentthroughbioelectrostimulation
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