Hydrolysis and acidification of activated sludge from a petroleum refinery

Abstract The cost-effective treatment of activated sludge that is generated by refining petroleum is a challenging industrial problem. In this study, semi-continuous stirred tank reactors (CSTRs) containing petroleum refinery excess activated sludge (PREAS) were used to comparatively investigate hyd...

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Autores principales:	Jiahao Liang, Chunmao Chen, Brandon A. Yoza, Ying Liang, Jin Li, Ming Ke, Qinghong Wang
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2019
Materias:	Hydrolysis acidification Petroleum refinery excess activated sludge (PREAS) VFA production Hydrogen production Microbial community Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/e17bcd3f228c40e59dd33dec4993e145
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spelling	oai:doaj.org-article:e17bcd3f228c40e59dd33dec4993e1452021-12-02T09:15:14ZHydrolysis and acidification of activated sludge from a petroleum refinery10.1007/s12182-019-0301-21672-51071995-8226https://doaj.org/article/e17bcd3f228c40e59dd33dec4993e1452019-02-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-019-0301-2https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract The cost-effective treatment of activated sludge that is generated by refining petroleum is a challenging industrial problem. In this study, semi-continuous stirred tank reactors (CSTRs) containing petroleum refinery excess activated sludge (PREAS) were used to comparatively investigate hydrolysis and acidification rates, after the addition of heneicosane (C21H44) (R1) and 1-phenylnaphthalene (C16H12) (R2) to different and individual reactors. Operation of the reactors using a sludge retention time (SRT) of 6 days and a pH of 5.0, resulted in the maintenance of stable biological activity as determined by soluble chemical oxygen demand (SCOD), volatile fatty acids (VFAs) production and oil removal efficiency. The optimum conditions for hydrogen production include a SRT of 8 days, at pH 6.5. Under these conditions, hydrogen production rates in the control containing only PREAS were 1567 mL/L (R0), compared with 1365 mL/L in R1 and 1454 mL/L-PREAS in R2. Coprothermobacter, Fervidobacterium, Caldisericum and Tepidiphilus were the dominant bacterial genera that have the potential to degrade petroleum compounds and generate VFAs. This study has shown that high concentrations of heneicosane and 1-phenylnaphthalene did not inhibit the hydrolytic acidification of PREAS.Jiahao LiangChunmao ChenBrandon A. YozaYing LiangJin LiMing KeQinghong WangKeAi Communications Co., Ltd.articleHydrolysis acidificationPetroleum refinery excess activated sludge (PREAS)VFA productionHydrogen productionMicrobial communityScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 2, Pp 428-438 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Hydrolysis acidification Petroleum refinery excess activated sludge (PREAS) VFA production Hydrogen production Microbial community Science Q Petrology QE420-499
spellingShingle	Hydrolysis acidification Petroleum refinery excess activated sludge (PREAS) VFA production Hydrogen production Microbial community Science Q Petrology QE420-499 Jiahao Liang Chunmao Chen Brandon A. Yoza Ying Liang Jin Li Ming Ke Qinghong Wang Hydrolysis and acidification of activated sludge from a petroleum refinery
description	Abstract The cost-effective treatment of activated sludge that is generated by refining petroleum is a challenging industrial problem. In this study, semi-continuous stirred tank reactors (CSTRs) containing petroleum refinery excess activated sludge (PREAS) were used to comparatively investigate hydrolysis and acidification rates, after the addition of heneicosane (C21H44) (R1) and 1-phenylnaphthalene (C16H12) (R2) to different and individual reactors. Operation of the reactors using a sludge retention time (SRT) of 6 days and a pH of 5.0, resulted in the maintenance of stable biological activity as determined by soluble chemical oxygen demand (SCOD), volatile fatty acids (VFAs) production and oil removal efficiency. The optimum conditions for hydrogen production include a SRT of 8 days, at pH 6.5. Under these conditions, hydrogen production rates in the control containing only PREAS were 1567 mL/L (R0), compared with 1365 mL/L in R1 and 1454 mL/L-PREAS in R2. Coprothermobacter, Fervidobacterium, Caldisericum and Tepidiphilus were the dominant bacterial genera that have the potential to degrade petroleum compounds and generate VFAs. This study has shown that high concentrations of heneicosane and 1-phenylnaphthalene did not inhibit the hydrolytic acidification of PREAS.
format	article
author	Jiahao Liang Chunmao Chen Brandon A. Yoza Ying Liang Jin Li Ming Ke Qinghong Wang
author_facet	Jiahao Liang Chunmao Chen Brandon A. Yoza Ying Liang Jin Li Ming Ke Qinghong Wang
author_sort	Jiahao Liang
title	Hydrolysis and acidification of activated sludge from a petroleum refinery
title_short	Hydrolysis and acidification of activated sludge from a petroleum refinery
title_full	Hydrolysis and acidification of activated sludge from a petroleum refinery
title_fullStr	Hydrolysis and acidification of activated sludge from a petroleum refinery
title_full_unstemmed	Hydrolysis and acidification of activated sludge from a petroleum refinery
title_sort	hydrolysis and acidification of activated sludge from a petroleum refinery
publisher	KeAi Communications Co., Ltd.
publishDate	2019
url	https://doaj.org/article/e17bcd3f228c40e59dd33dec4993e145
work_keys_str_mv	AT jiahaoliang hydrolysisandacidificationofactivatedsludgefromapetroleumrefinery AT chunmaochen hydrolysisandacidificationofactivatedsludgefromapetroleumrefinery AT brandonayoza hydrolysisandacidificationofactivatedsludgefromapetroleumrefinery AT yingliang hydrolysisandacidificationofactivatedsludgefromapetroleumrefinery AT jinli hydrolysisandacidificationofactivatedsludgefromapetroleumrefinery AT mingke hydrolysisandacidificationofactivatedsludgefromapetroleumrefinery AT qinghongwang hydrolysisandacidificationofactivatedsludgefromapetroleumrefinery
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Hydrolysis and acidification of activated sludge from a petroleum refinery

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