H2O2 induced cost effective microwave disintegration of dairy waste activated sludge in acidic environment for efficient biomethane generation

A. Parvathy Eswari; S. Kavitha; J. Rajesh Banu; O. Parthiba Karthikeyan; Ick Tae Yeom

doi:10.1016/j.biortech.2017.07.078

H₂O₂ induced cost effective microwave disintegration of dairy waste activated sludge in acidic environment for efficient biomethane generation

A. Parvathy Eswari, S. Kavitha, J. Rajesh Banu^*, O. Parthiba Karthikeyan, Ick Tae Yeom

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

63 Citations (Scopus)

Abstract

This study aimed to improve the biomethane potential of dairy waste activated sludge (WAS) by H₂O₂-acidic pH induced microwave disintegration (HAMW-D) pretreatment approach. The results of HAMW-D compared with the microwave disintegration (MW-D) alone for energy and economic factors. In the two phase disintegration process, the H₂O₂ concentration of about 0.5 mg/g SS under acid pH of 5 was found to be optimum for effective dissociation of Extracellular Polymeric Substances (EPS) matrix. A higher liquefaction of about 46.6% was achieved in HAMW-D when compared to that of MW-D (30%). It subsequently improved the methane yield of about 250 mL/g VS in HAMW-D, which was 9.6% higher than MW-D. A net profit of about 49 €/ton was achieved for HAMW-D, therefore it is highly recommended for WAS pretreatment.

Original language	English
Pages (from-to)	688-697
Number of pages	10
Journal	Bioresource Technology
Volume	244, Part 1
DOIs	https://doi.org/10.1016/j.biortech.2017.07.078
Publication status	Published - Nov 2017

User-Defined Keywords

Cost analysis
EPS matrix
Methane production
Microwave
Pretreatment

UN SDGs

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

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10.1016/j.biortech.2017.07.078

Cite this

@article{3368aa598fd040eaaa5ded6a76b3dd9c,

title = "H2O2 induced cost effective microwave disintegration of dairy waste activated sludge in acidic environment for efficient biomethane generation",

abstract = "This study aimed to improve the biomethane potential of dairy waste activated sludge (WAS) by H2O2-acidic pH induced microwave disintegration (HAMW-D) pretreatment approach. The results of HAMW-D compared with the microwave disintegration (MW-D) alone for energy and economic factors. In the two phase disintegration process, the H2O2 concentration of about 0.5 mg/g SS under acid pH of 5 was found to be optimum for effective dissociation of Extracellular Polymeric Substances (EPS) matrix. A higher liquefaction of about 46.6% was achieved in HAMW-D when compared to that of MW-D (30%). It subsequently improved the methane yield of about 250 mL/g VS in HAMW-D, which was 9.6% higher than MW-D. A net profit of about 49 €/ton was achieved for HAMW-D, therefore it is highly recommended for WAS pretreatment.",

keywords = "Cost analysis, EPS matrix, Methane production, Microwave, Pretreatment",

author = "Eswari, {A. Parvathy} and S. Kavitha and Banu, {J. Rajesh} and Karthikeyan, {O. Parthiba} and Yeom, {Ick Tae}",

year = "2017",

month = nov,

doi = "10.1016/j.biortech.2017.07.078",

language = "English",

volume = "244, Part 1",

pages = "688--697",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - H2O2 induced cost effective microwave disintegration of dairy waste activated sludge in acidic environment for efficient biomethane generation

AU - Eswari, A. Parvathy

AU - Kavitha, S.

AU - Banu, J. Rajesh

AU - Karthikeyan, O. Parthiba

AU - Yeom, Ick Tae

PY - 2017/11

Y1 - 2017/11

N2 - This study aimed to improve the biomethane potential of dairy waste activated sludge (WAS) by H2O2-acidic pH induced microwave disintegration (HAMW-D) pretreatment approach. The results of HAMW-D compared with the microwave disintegration (MW-D) alone for energy and economic factors. In the two phase disintegration process, the H2O2 concentration of about 0.5 mg/g SS under acid pH of 5 was found to be optimum for effective dissociation of Extracellular Polymeric Substances (EPS) matrix. A higher liquefaction of about 46.6% was achieved in HAMW-D when compared to that of MW-D (30%). It subsequently improved the methane yield of about 250 mL/g VS in HAMW-D, which was 9.6% higher than MW-D. A net profit of about 49 €/ton was achieved for HAMW-D, therefore it is highly recommended for WAS pretreatment.

AB - This study aimed to improve the biomethane potential of dairy waste activated sludge (WAS) by H2O2-acidic pH induced microwave disintegration (HAMW-D) pretreatment approach. The results of HAMW-D compared with the microwave disintegration (MW-D) alone for energy and economic factors. In the two phase disintegration process, the H2O2 concentration of about 0.5 mg/g SS under acid pH of 5 was found to be optimum for effective dissociation of Extracellular Polymeric Substances (EPS) matrix. A higher liquefaction of about 46.6% was achieved in HAMW-D when compared to that of MW-D (30%). It subsequently improved the methane yield of about 250 mL/g VS in HAMW-D, which was 9.6% higher than MW-D. A net profit of about 49 €/ton was achieved for HAMW-D, therefore it is highly recommended for WAS pretreatment.

KW - Cost analysis

KW - EPS matrix

KW - Methane production

KW - Microwave

KW - Pretreatment

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DO - 10.1016/j.biortech.2017.07.078

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SN - 0960-8524

VL - 244, Part 1

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JO - Bioresource Technology

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