Combined thermo-chemo-sonic disintegration of waste activated sludge for biogas production

S. Kavitha; R. Yukesh Kannah; Ick Tae Yeom; Khac Uan Do; J. Rajesh Banu

doi:10.1016/j.biortech.2015.08.131

Combined thermo-chemo-sonic disintegration of waste activated sludge for biogas production

S. Kavitha
, R. Yukesh Kannah
, Ick Tae Yeom
, Khac Uan Do
, J. Rajesh Banu

Graduate School of Water Resources

Anna University
Hanoi University of Science and Technology

Research output: Contribution to journal › Article › peer-review

130 Scopus citations

Abstract

In the present study, there was an investigation about the impact of a new combined thermo-chemo-sonic disintegration of waste activated sludge (WAS) on biodegradability. The outcome of sludge disintegration reveals that maximum Suspended Solids (SS) reduction and Chemical Oxygen Demand (COD) solubilization effectuated at a specific energy input of 5290.5kJ/kgTS, and was found to be 20%, 16.4%, 15% and 27%, 22%, and 20%, respectively for the three alkalis (NaOH, KOH, and Ca(OH)₂). The conversion coefficient of the Volatile Suspended Solids (VSS) to product Soluble COD (SCOD), calculated by nonlinear regression modeling, was found to be 0.5530gSCOD/gVSS, 0.4587gSCOD/gVSS, and 0.4195gSCOD/gVSS for NaOH, KOH, and Ca(OH)₂, respectively. In the biodegradability studies, the parameter evaluation provides an estimate of parameter uncertainty and correlation, and elucidates that there is no significant difference in biodegradability (0.413gCOD/gCOD, 0.367gCOD/gCOD, and 0.342gCOD/gCOD) for three alkalis (NaOH, KOH, and Ca(OH)₂).

Original language	English
Pages (from-to)	383-392
Number of pages	10
Journal	Bioresource Technology
Volume	197
DOIs	https://doi.org/10.1016/j.biortech.2015.08.131
State	Published - 1 Dec 2015

UN SDGs

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

SDG 6 Clean Water and Sanitation
SDG 7 Affordable and Clean Energy

Keywords

Biodegradability
Nonlinear regression
Solubilization
Thermo-chemo-sonic disintegration
Waste activated sludge (WAS)

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10.1016/j.biortech.2015.08.131

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title = "Combined thermo-chemo-sonic disintegration of waste activated sludge for biogas production",

abstract = "In the present study, there was an investigation about the impact of a new combined thermo-chemo-sonic disintegration of waste activated sludge (WAS) on biodegradability. The outcome of sludge disintegration reveals that maximum Suspended Solids (SS) reduction and Chemical Oxygen Demand (COD) solubilization effectuated at a specific energy input of 5290.5kJ/kgTS, and was found to be 20\%, 16.4\%, 15\% and 27\%, 22\%, and 20\%, respectively for the three alkalis (NaOH, KOH, and Ca(OH)2). The conversion coefficient of the Volatile Suspended Solids (VSS) to product Soluble COD (SCOD), calculated by nonlinear regression modeling, was found to be 0.5530gSCOD/gVSS, 0.4587gSCOD/gVSS, and 0.4195gSCOD/gVSS for NaOH, KOH, and Ca(OH)2, respectively. In the biodegradability studies, the parameter evaluation provides an estimate of parameter uncertainty and correlation, and elucidates that there is no significant difference in biodegradability (0.413gCOD/gCOD, 0.367gCOD/gCOD, and 0.342gCOD/gCOD) for three alkalis (NaOH, KOH, and Ca(OH)2).",

keywords = "Biodegradability, Nonlinear regression, Solubilization, Thermo-chemo-sonic disintegration, Waste activated sludge (WAS)",

author = "S. Kavitha and \{Yukesh Kannah\}, R. and Yeom, \{Ick Tae\} and Do, \{Khac Uan\} and Banu, \{J. Rajesh\}",

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doi = "10.1016/j.biortech.2015.08.131",

language = "English",

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T1 - Combined thermo-chemo-sonic disintegration of waste activated sludge for biogas production

AU - Kavitha, S.

AU - Yukesh Kannah, R.

AU - Yeom, Ick Tae

AU - Do, Khac Uan

AU - Banu, J. Rajesh

PY - 2015/12/1

Y1 - 2015/12/1

N2 - In the present study, there was an investigation about the impact of a new combined thermo-chemo-sonic disintegration of waste activated sludge (WAS) on biodegradability. The outcome of sludge disintegration reveals that maximum Suspended Solids (SS) reduction and Chemical Oxygen Demand (COD) solubilization effectuated at a specific energy input of 5290.5kJ/kgTS, and was found to be 20%, 16.4%, 15% and 27%, 22%, and 20%, respectively for the three alkalis (NaOH, KOH, and Ca(OH)2). The conversion coefficient of the Volatile Suspended Solids (VSS) to product Soluble COD (SCOD), calculated by nonlinear regression modeling, was found to be 0.5530gSCOD/gVSS, 0.4587gSCOD/gVSS, and 0.4195gSCOD/gVSS for NaOH, KOH, and Ca(OH)2, respectively. In the biodegradability studies, the parameter evaluation provides an estimate of parameter uncertainty and correlation, and elucidates that there is no significant difference in biodegradability (0.413gCOD/gCOD, 0.367gCOD/gCOD, and 0.342gCOD/gCOD) for three alkalis (NaOH, KOH, and Ca(OH)2).

AB - In the present study, there was an investigation about the impact of a new combined thermo-chemo-sonic disintegration of waste activated sludge (WAS) on biodegradability. The outcome of sludge disintegration reveals that maximum Suspended Solids (SS) reduction and Chemical Oxygen Demand (COD) solubilization effectuated at a specific energy input of 5290.5kJ/kgTS, and was found to be 20%, 16.4%, 15% and 27%, 22%, and 20%, respectively for the three alkalis (NaOH, KOH, and Ca(OH)2). The conversion coefficient of the Volatile Suspended Solids (VSS) to product Soluble COD (SCOD), calculated by nonlinear regression modeling, was found to be 0.5530gSCOD/gVSS, 0.4587gSCOD/gVSS, and 0.4195gSCOD/gVSS for NaOH, KOH, and Ca(OH)2, respectively. In the biodegradability studies, the parameter evaluation provides an estimate of parameter uncertainty and correlation, and elucidates that there is no significant difference in biodegradability (0.413gCOD/gCOD, 0.367gCOD/gCOD, and 0.342gCOD/gCOD) for three alkalis (NaOH, KOH, and Ca(OH)2).

KW - Biodegradability

KW - Nonlinear regression

KW - Solubilization

KW - Thermo-chemo-sonic disintegration

KW - Waste activated sludge (WAS)

UR - https://www.scopus.com/pages/publications/84941108936

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SN - 0960-8524

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SP - 383

EP - 392

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Combined thermo-chemo-sonic disintegration of waste activated sludge for biogas production

Abstract

UN SDGs

Keywords

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