Effects of various pretreatments for enhanced anaerobic digestion with waste activated sludge

Jeongsik Kim; Chulhwan Park; Tak Hyun Kim; Myunggu Lee; Sangyong Kim; Seung Wook Kim; Jinwon Lee

doi:10.1263/jbb.95.271

Effects of various pretreatments for enhanced anaerobic digestion with waste activated sludge

Jeongsik Kim, Chulhwan Park, Tak Hyun Kim, Myunggu Lee, Sangyong Kim, Seung Wook Kim, Jinwon Lee

Department of Chemical and Biological Engineering

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

567 Citations (Scopus)

Abstract

The purpose of this study was to enhance the efficiency of anaerobic digestion with waste activated sludge (WAS) by batch experiments. We studied the effects of various pretreatment methods (thermal, chemical, ultrasonic and thermochemical pretreatments) on the biogas production and pollutants reduction owing to solubilization enhancement, particle size reduction, increased soluble protein, and increased soluble COD. The thermochemical pretreatment gave the best results, i.e., the production of methane increased by more than 34.3% and soluble COD (SCOD) removal also increased by more than 67.8% over the control. In this case, the biogas production, methane production and the SCOD removal efficiency were about 5037 l biogas/m³ WAS, 3367 l methane/m³ WAS and 61.4%, respectively. Therefore, it is recognized that higher digestion efficiencies of the WAS were obtained through thermochemical pretreatment of the sludge.

Original language	English
Pages (from-to)	271-275
Number of pages	5
Journal	Journal of Bioscience and Bioengineering
Volume	95
Issue number	3
DOIs	https://doi.org/10.1263/jbb.95.271
Publication status	Published - 2003

Keywords

Anaerobic digestion
Biogas
Methane
Pretreatment
Waste activated sludge

ASJC Scopus subject areas

Biotechnology
Bioengineering
Applied Microbiology and Biotechnology

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10.1263/jbb.95.271

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title = "Effects of various pretreatments for enhanced anaerobic digestion with waste activated sludge",

abstract = "The purpose of this study was to enhance the efficiency of anaerobic digestion with waste activated sludge (WAS) by batch experiments. We studied the effects of various pretreatment methods (thermal, chemical, ultrasonic and thermochemical pretreatments) on the biogas production and pollutants reduction owing to solubilization enhancement, particle size reduction, increased soluble protein, and increased soluble COD. The thermochemical pretreatment gave the best results, i.e., the production of methane increased by more than 34.3% and soluble COD (SCOD) removal also increased by more than 67.8% over the control. In this case, the biogas production, methane production and the SCOD removal efficiency were about 5037 l biogas/m3 WAS, 3367 l methane/m3 WAS and 61.4%, respectively. Therefore, it is recognized that higher digestion efficiencies of the WAS were obtained through thermochemical pretreatment of the sludge.",

keywords = "Anaerobic digestion, Biogas, Methane, Pretreatment, Waste activated sludge",

author = "Jeongsik Kim and Chulhwan Park and Kim, {Tak Hyun} and Myunggu Lee and Sangyong Kim and Kim, {Seung Wook} and Jinwon Lee",

note = "Funding Information: This work was supported by the Korea Ministry of Science and Technology (National Research Laboratory Program) and the Korea Institute of Industrial Technology (International Cooperation Project). The authors greatly appreciate their financial support.",

year = "2003",

doi = "10.1263/jbb.95.271",

language = "English",

volume = "95",

pages = "271--275",

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TY - JOUR

T1 - Effects of various pretreatments for enhanced anaerobic digestion with waste activated sludge

AU - Kim, Jeongsik

AU - Park, Chulhwan

AU - Kim, Tak Hyun

AU - Lee, Myunggu

AU - Kim, Sangyong

AU - Kim, Seung Wook

AU - Lee, Jinwon

N1 - Funding Information: This work was supported by the Korea Ministry of Science and Technology (National Research Laboratory Program) and the Korea Institute of Industrial Technology (International Cooperation Project). The authors greatly appreciate their financial support.

PY - 2003

Y1 - 2003

N2 - The purpose of this study was to enhance the efficiency of anaerobic digestion with waste activated sludge (WAS) by batch experiments. We studied the effects of various pretreatment methods (thermal, chemical, ultrasonic and thermochemical pretreatments) on the biogas production and pollutants reduction owing to solubilization enhancement, particle size reduction, increased soluble protein, and increased soluble COD. The thermochemical pretreatment gave the best results, i.e., the production of methane increased by more than 34.3% and soluble COD (SCOD) removal also increased by more than 67.8% over the control. In this case, the biogas production, methane production and the SCOD removal efficiency were about 5037 l biogas/m3 WAS, 3367 l methane/m3 WAS and 61.4%, respectively. Therefore, it is recognized that higher digestion efficiencies of the WAS were obtained through thermochemical pretreatment of the sludge.

AB - The purpose of this study was to enhance the efficiency of anaerobic digestion with waste activated sludge (WAS) by batch experiments. We studied the effects of various pretreatment methods (thermal, chemical, ultrasonic and thermochemical pretreatments) on the biogas production and pollutants reduction owing to solubilization enhancement, particle size reduction, increased soluble protein, and increased soluble COD. The thermochemical pretreatment gave the best results, i.e., the production of methane increased by more than 34.3% and soluble COD (SCOD) removal also increased by more than 67.8% over the control. In this case, the biogas production, methane production and the SCOD removal efficiency were about 5037 l biogas/m3 WAS, 3367 l methane/m3 WAS and 61.4%, respectively. Therefore, it is recognized that higher digestion efficiencies of the WAS were obtained through thermochemical pretreatment of the sludge.

KW - Anaerobic digestion

KW - Biogas

KW - Methane

KW - Pretreatment

KW - Waste activated sludge

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DO - 10.1263/jbb.95.271

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SN - 1389-1723

VL - 95

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EP - 275

JO - Journal of Bioscience and Bioengineering

JF - Journal of Bioscience and Bioengineering

IS - 3

ER -

Effects of various pretreatments for enhanced anaerobic digestion with waste activated sludge

Abstract

Keywords

ASJC Scopus subject areas

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