Serial CSTR digester configuration for improving biogas production from manure

Kanokwan Boe; Irini Angelidaki

doi:10.1016/j.watres.2008.09.041

Serial CSTR digester configuration for improving biogas production from manure

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

Abstract

A new configuration of manure digesters for improving biogas production has been investigated in laboratory scale. A single thermophilic continuous-flow stirred tank reactor (CSTR) operated with a hydraulic retention time (HRT) of 15 days was compared to a serial CSTR configuration with volume distribution ratio of 80/20 and 90/10, and total HRT of 15 days. The results showed that the serial CSTR could obtain 11% higher biogas yield compared to the single CSTR. The increased biogas yield in the serial CSTR was mainly from the second reactor, which accounted for 16% and 12% of total biogas yield in the 90/10 and 80/20 configuration, respectively. VFA concentration in the serial CSTR was high in the first reactor but very low in the second reactor. The results from organic pulse load test showed that the second reactor in serial CSTR helped utilizing VFA produced from overloading in the first reactor, which improved the effluent quality and conversion efficiency of the serial CSTR.

Original language	English
Journal	Water Research
Volume	43
Issue number	1
Pages (from-to)	166-172
ISSN	0043-1354
DOIs	https://doi.org/10.1016/j.watres.2008.09.041
Publication status	Published - 2009

Keywords

Manure digester
Anaerobic digestion
Biogas
Serial CSTR configuration

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title = "Serial CSTR digester configuration for improving biogas production from manure",

abstract = "A new configuration of manure digesters for improving biogas production has been investigated in laboratory scale. A single thermophilic continuous-flow stirred tank reactor (CSTR) operated with a hydraulic retention time (HRT) of 15 days was compared to a serial CSTR configuration with volume distribution ratio of 80/20 and 90/10, and total HRT of 15 days. The results showed that the serial CSTR could obtain 11% higher biogas yield compared to the single CSTR. The increased biogas yield in the serial CSTR was mainly from the second reactor, which accounted for 16% and 12% of total biogas yield in the 90/10 and 80/20 configuration, respectively. VFA concentration in the serial CSTR was high in the first reactor but very low in the second reactor. The results from organic pulse load test showed that the second reactor in serial CSTR helped utilizing VFA produced from overloading in the first reactor, which improved the effluent quality and conversion efficiency of the serial CSTR.",

keywords = "Manure digester, Anaerobic digestion, Biogas, Serial CSTR configuration",

author = "Kanokwan Boe and Irini Angelidaki",

year = "2009",

doi = "10.1016/j.watres.2008.09.041",

language = "English",

volume = "43",

pages = "166--172",

journal = "Water Research",

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T1 - Serial CSTR digester configuration for improving biogas production from manure

AU - Boe, Kanokwan

AU - Angelidaki, Irini

PY - 2009

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AB - A new configuration of manure digesters for improving biogas production has been investigated in laboratory scale. A single thermophilic continuous-flow stirred tank reactor (CSTR) operated with a hydraulic retention time (HRT) of 15 days was compared to a serial CSTR configuration with volume distribution ratio of 80/20 and 90/10, and total HRT of 15 days. The results showed that the serial CSTR could obtain 11% higher biogas yield compared to the single CSTR. The increased biogas yield in the serial CSTR was mainly from the second reactor, which accounted for 16% and 12% of total biogas yield in the 90/10 and 80/20 configuration, respectively. VFA concentration in the serial CSTR was high in the first reactor but very low in the second reactor. The results from organic pulse load test showed that the second reactor in serial CSTR helped utilizing VFA produced from overloading in the first reactor, which improved the effluent quality and conversion efficiency of the serial CSTR.

KW - Manure digester

KW - Anaerobic digestion

KW - Biogas

KW - Serial CSTR configuration

U2 - 10.1016/j.watres.2008.09.041

DO - 10.1016/j.watres.2008.09.041

M3 - Journal article

C2 - 18976792

SN - 0043-1354

VL - 43

SP - 166

EP - 172

JO - Water Research

JF - Water Research

IS - 1

ER -

Serial CSTR digester configuration for improving biogas production from manure

Abstract

Keywords

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