Alkali activated persulfate mediated extracellular organic release on enzyme secreting bacterial pretreatment for efficient hydrogen production

Preethi; J. Rajesh Banu; V. Godvin Sharmila; S Kavitha; Sunita Varjani; Gopalakrishnan Kumar; M. Gunasekaran

doi:10.1016/j.biortech.2021.125810

Alkali activated persulfate mediated extracellular organic release on enzyme secreting bacterial pretreatment for efficient hydrogen production

Preethi, J. Rajesh Banu, V. Godvin Sharmila, S Kavitha, Sunita Varjani, Gopalakrishnan Kumar, M. Gunasekaran^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

18 Citations (Scopus)

Abstract

The present investigation is proposed to assess the competency of Sodium Persulphate (SPS) induced enzyme secreting bacterial pretreatment in enhancing the generation of biohydrogen from waste activated sludge (WAS). Alkali activated SPS of dosage 0.015 g/g SS has been opted to disseminate the floc structure to fortify the release of Extracellular polymeric substance (EPS) into aqueous phase. This removal of EPS enhances the bacterial disintegration fostering 18.71% of suspended solids reduction and 21% of COD solubilization which was comparatively higher than bacterially pretreated (BP) and control (C) sludge. Biohydrogen production of control (C), bacterially pretreated (BP) and SPS mediated bacterially pretreated (SPS-BP) sludge were found to be 32.2 mLH₂/g COD, 48.3 mLH₂/g COD and 103.8 mLH₂/g COD respectively. The net energy production of SPS - BP is 0.01 kWh which is higher than the C and BP sample during the entire treatment and obtained energy ratio greater than 1. © 2021 Elsevier Ltd. All rights reserved.

Original language	English
Article number	125810
Journal	Bioresource Technology
Volume	341
Online published	20 Aug 2021
DOIs	https://doi.org/10.1016/j.biortech.2021.125810
Publication status	Published - Dec 2021
Externally published	Yes

Funding

This work was supported by the Department of Biotechnology, India under its initiative “Mission innovation Challenge Scheme (IC4)”. The research grant from the project “A novel integrated biorefinery for conversion of lignocellulosic agro waste into value-added products and bioenergy” (BT/PR31054/PBD/26/763/2019) was used in this study.

Research Keywords

Biohydrogen
Energy analysis
Enzyme secreting bacteria
Sludge
Sodium persulphate

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Alkali activated persulfate mediated extracellular organic release on enzyme secreting bacterial pretreatment for efficient hydrogen production",

abstract = "The present investigation is proposed to assess the competency of Sodium Persulphate (SPS) induced enzyme secreting bacterial pretreatment in enhancing the generation of biohydrogen from waste activated sludge (WAS). Alkali activated SPS of dosage 0.015 g/g SS has been opted to disseminate the floc structure to fortify the release of Extracellular polymeric substance (EPS) into aqueous phase. This removal of EPS enhances the bacterial disintegration fostering 18.71% of suspended solids reduction and 21% of COD solubilization which was comparatively higher than bacterially pretreated (BP) and control (C) sludge. Biohydrogen production of control (C), bacterially pretreated (BP) and SPS mediated bacterially pretreated (SPS-BP) sludge were found to be 32.2 mLH2/g COD, 48.3 mLH2/g COD and 103.8 mLH2/g COD respectively. The net energy production of SPS - BP is 0.01 kWh which is higher than the C and BP sample during the entire treatment and obtained energy ratio greater than 1. {\textcopyright} 2021 Elsevier Ltd. All rights reserved.",

keywords = "Biohydrogen, Energy analysis, Enzyme secreting bacteria, Sludge, Sodium persulphate",

author = "Preethi and {Rajesh Banu}, J. and {Godvin Sharmila}, V. and S Kavitha and Sunita Varjani and Gopalakrishnan Kumar and M. Gunasekaran",

year = "2021",

month = dec,

doi = "10.1016/j.biortech.2021.125810",

language = "English",

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TY - JOUR

T1 - Alkali activated persulfate mediated extracellular organic release on enzyme secreting bacterial pretreatment for efficient hydrogen production

AU - Preethi,

AU - Rajesh Banu, J.

AU - Godvin Sharmila, V.

AU - Kavitha, S

AU - Varjani, Sunita

AU - Kumar, Gopalakrishnan

AU - Gunasekaran, M.

PY - 2021/12

Y1 - 2021/12

N2 - The present investigation is proposed to assess the competency of Sodium Persulphate (SPS) induced enzyme secreting bacterial pretreatment in enhancing the generation of biohydrogen from waste activated sludge (WAS). Alkali activated SPS of dosage 0.015 g/g SS has been opted to disseminate the floc structure to fortify the release of Extracellular polymeric substance (EPS) into aqueous phase. This removal of EPS enhances the bacterial disintegration fostering 18.71% of suspended solids reduction and 21% of COD solubilization which was comparatively higher than bacterially pretreated (BP) and control (C) sludge. Biohydrogen production of control (C), bacterially pretreated (BP) and SPS mediated bacterially pretreated (SPS-BP) sludge were found to be 32.2 mLH2/g COD, 48.3 mLH2/g COD and 103.8 mLH2/g COD respectively. The net energy production of SPS - BP is 0.01 kWh which is higher than the C and BP sample during the entire treatment and obtained energy ratio greater than 1. © 2021 Elsevier Ltd. All rights reserved.

AB - The present investigation is proposed to assess the competency of Sodium Persulphate (SPS) induced enzyme secreting bacterial pretreatment in enhancing the generation of biohydrogen from waste activated sludge (WAS). Alkali activated SPS of dosage 0.015 g/g SS has been opted to disseminate the floc structure to fortify the release of Extracellular polymeric substance (EPS) into aqueous phase. This removal of EPS enhances the bacterial disintegration fostering 18.71% of suspended solids reduction and 21% of COD solubilization which was comparatively higher than bacterially pretreated (BP) and control (C) sludge. Biohydrogen production of control (C), bacterially pretreated (BP) and SPS mediated bacterially pretreated (SPS-BP) sludge were found to be 32.2 mLH2/g COD, 48.3 mLH2/g COD and 103.8 mLH2/g COD respectively. The net energy production of SPS - BP is 0.01 kWh which is higher than the C and BP sample during the entire treatment and obtained energy ratio greater than 1. © 2021 Elsevier Ltd. All rights reserved.

KW - Biohydrogen

KW - Energy analysis

KW - Enzyme secreting bacteria

KW - Sludge

KW - Sodium persulphate

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DO - 10.1016/j.biortech.2021.125810

M3 - RGC 21 - Publication in refereed journal

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SN - 0960-8524

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JO - Bioresource Technology

JF - Bioresource Technology

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ER -

Alkali activated persulfate mediated extracellular organic release on enzyme secreting bacterial pretreatment for efficient hydrogen production

Abstract

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Research Keywords

UN SDGs

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