Anaerobic degradation of butyrate in a UASB reactor

H. H.P. Fang; Ho Kwong Chui; Yu You Li

doi:10.1016/0960-8524(94)00092-F

Anaerobic degradation of butyrate in a UASB reactor

H. H.P. Fang, Ho Kwong Chui, Yu You Li

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

6 Citations (Scopus)

Abstract

Wastewater with concentrated butyrate was treated in a 2·8 l UASB (Upflow Anaerobic Sludge Blanket) reactor at 37°C and pH 7·1-7·7. The process consistently removed 97-99% of COD for loading rates up to 31 g COD/l/day. Of all the COD removed, 94·5% was converted to methane; the average sludge yield was 0·037 g VSS/g COD. Conversion of acetate to methane appeared to be the rate-limiting step. Sludge granules had a maximum specific methane production rate of 1·57 g methane COD/g VSS/day, but were unable to degrade propionate. The granules were 1-2 mm in size and had a densely-packed skin layer which comprised two types of microcolony: one was composed of cocci with abundant extracellular polymer and the other was composed of two bacterial species in juxtapositioned syntrophic association. The interior was mainly composed of Methanothrix-like bacteria, a large number of which were entwined into rope-shaped aggregates.

Original language	English
Pages (from-to)	75-81
Number of pages	7
Journal	Bioresource Technology
Volume	51
Issue number	1
DOIs	https://doi.org/10.1016/0960-8524(94)00092-F
Publication status	Published - 1995
Externally published	Yes

Keywords

Butyrate
Methanothrix
degradation
granule
methanogenic activity
syntrophic association

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

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

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10.1016/0960-8524(94)00092-F

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title = "Anaerobic degradation of butyrate in a UASB reactor",

abstract = "Wastewater with concentrated butyrate was treated in a 2·8 l UASB (Upflow Anaerobic Sludge Blanket) reactor at 37°C and pH 7·1-7·7. The process consistently removed 97-99% of COD for loading rates up to 31 g COD/l/day. Of all the COD removed, 94·5% was converted to methane; the average sludge yield was 0·037 g VSS/g COD. Conversion of acetate to methane appeared to be the rate-limiting step. Sludge granules had a maximum specific methane production rate of 1·57 g methane COD/g VSS/day, but were unable to degrade propionate. The granules were 1-2 mm in size and had a densely-packed skin layer which comprised two types of microcolony: one was composed of cocci with abundant extracellular polymer and the other was composed of two bacterial species in juxtapositioned syntrophic association. The interior was mainly composed of Methanothrix-like bacteria, a large number of which were entwined into rope-shaped aggregates.",

keywords = "Butyrate, Methanothrix, degradation, granule, methanogenic activity, syntrophic association",

author = "Fang, {H. H.P.} and Chui, {Ho Kwong} and Li, {Yu You}",

note = "Funding Information: The authors wish to thank the Hong Kong Research Grants Council, for the financial support of this study, and the Electron Microscope Unit of the University of Hong Kong for technical assistance.",

year = "1995",

doi = "10.1016/0960-8524(94)00092-F",

language = "English",

volume = "51",

pages = "75--81",

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TY - JOUR

T1 - Anaerobic degradation of butyrate in a UASB reactor

AU - Fang, H. H.P.

AU - Chui, Ho Kwong

AU - Li, Yu You

N1 - Funding Information: The authors wish to thank the Hong Kong Research Grants Council, for the financial support of this study, and the Electron Microscope Unit of the University of Hong Kong for technical assistance.

PY - 1995

Y1 - 1995

N2 - Wastewater with concentrated butyrate was treated in a 2·8 l UASB (Upflow Anaerobic Sludge Blanket) reactor at 37°C and pH 7·1-7·7. The process consistently removed 97-99% of COD for loading rates up to 31 g COD/l/day. Of all the COD removed, 94·5% was converted to methane; the average sludge yield was 0·037 g VSS/g COD. Conversion of acetate to methane appeared to be the rate-limiting step. Sludge granules had a maximum specific methane production rate of 1·57 g methane COD/g VSS/day, but were unable to degrade propionate. The granules were 1-2 mm in size and had a densely-packed skin layer which comprised two types of microcolony: one was composed of cocci with abundant extracellular polymer and the other was composed of two bacterial species in juxtapositioned syntrophic association. The interior was mainly composed of Methanothrix-like bacteria, a large number of which were entwined into rope-shaped aggregates.

AB - Wastewater with concentrated butyrate was treated in a 2·8 l UASB (Upflow Anaerobic Sludge Blanket) reactor at 37°C and pH 7·1-7·7. The process consistently removed 97-99% of COD for loading rates up to 31 g COD/l/day. Of all the COD removed, 94·5% was converted to methane; the average sludge yield was 0·037 g VSS/g COD. Conversion of acetate to methane appeared to be the rate-limiting step. Sludge granules had a maximum specific methane production rate of 1·57 g methane COD/g VSS/day, but were unable to degrade propionate. The granules were 1-2 mm in size and had a densely-packed skin layer which comprised two types of microcolony: one was composed of cocci with abundant extracellular polymer and the other was composed of two bacterial species in juxtapositioned syntrophic association. The interior was mainly composed of Methanothrix-like bacteria, a large number of which were entwined into rope-shaped aggregates.

KW - Butyrate

KW - Methanothrix

KW - degradation

KW - granule

KW - methanogenic activity

KW - syntrophic association

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Anaerobic degradation of butyrate in a UASB reactor

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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