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Comparative performance of a UASB reactor and an anaerobic packed-bed reactor when treating potato waste leachate

Parawira, Wilson LU ; Murto, Marika LU ; Zvauya, R and Mattiasson, Bo LU (2006) In Renewable Energy 31(6). p.893-903
Abstract
The results presented in this paper are from studies on a laboratory-scale upflow anaerobic sludge blanket (UASB) reactor and an anaerobic packed-bed (APB) reactor treating potato leachate at increasing organic loading rates from 1.5 to 7.0 9 COD/ l/day. The hydraulic retention times ranged from 13.2 to 2.8 days for both reactors during the 100 days of the experiment. The maximum organic loading rates possible in the laboratory- scale UASB and APB reactors for stable operation were approximately 6.1 and 4.7 g COD/l day, respectively. The COD removal efficiencies of both reactors were greater than 90% based on the total COD of the effluent. The methane yield increased with increasing organic loading rate up to 0.23 l CH4/g CODdegraded in... (More)
The results presented in this paper are from studies on a laboratory-scale upflow anaerobic sludge blanket (UASB) reactor and an anaerobic packed-bed (APB) reactor treating potato leachate at increasing organic loading rates from 1.5 to 7.0 9 COD/ l/day. The hydraulic retention times ranged from 13.2 to 2.8 days for both reactors during the 100 days of the experiment. The maximum organic loading rates possible in the laboratory- scale UASB and APB reactors for stable operation were approximately 6.1 and 4.7 g COD/l day, respectively. The COD removal efficiencies of both reactors were greater than 90% based on the total COD of the effluent. The methane yield increased with increasing organic loading rate up to 0.23 l CH4/g CODdegraded in the UASB reactor and 0. 161 CH4/g CODdegraded in the APB reactor. The UASB could be run at a higher organic loading rate than the APB reactor and achieved a higher methane yield. Signs of reactor instability were decreasing partial alkalinity and pH and increasing amounts of volatile fatty acids. The study demonstrated the suitability of the UASB and a packed-bed reactor for treating leachate from potato waste. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
biogas, leachate, potato waste, anaerobic packed-bed, anaerobic digestion, methane yield, UASB
in
Renewable Energy
volume
31
issue
6
pages
893 - 903
publisher
Elsevier
external identifiers
  • wos:000235675700013
  • scopus:30644462350
ISSN
0960-1481
DOI
10.1016/j.renene.2005.05.013
language
English
LU publication?
yes
id
08e58434-d98d-48b5-92b8-2b8e9c2929c6 (old id 416639)
date added to LUP
2016-04-01 12:09:06
date last changed
2022-01-26 23:30:50
@article{08e58434-d98d-48b5-92b8-2b8e9c2929c6,
  abstract     = {{The results presented in this paper are from studies on a laboratory-scale upflow anaerobic sludge blanket (UASB) reactor and an anaerobic packed-bed (APB) reactor treating potato leachate at increasing organic loading rates from 1.5 to 7.0 9 COD/ l/day. The hydraulic retention times ranged from 13.2 to 2.8 days for both reactors during the 100 days of the experiment. The maximum organic loading rates possible in the laboratory- scale UASB and APB reactors for stable operation were approximately 6.1 and 4.7 g COD/l day, respectively. The COD removal efficiencies of both reactors were greater than 90% based on the total COD of the effluent. The methane yield increased with increasing organic loading rate up to 0.23 l CH4/g CODdegraded in the UASB reactor and 0. 161 CH4/g CODdegraded in the APB reactor. The UASB could be run at a higher organic loading rate than the APB reactor and achieved a higher methane yield. Signs of reactor instability were decreasing partial alkalinity and pH and increasing amounts of volatile fatty acids. The study demonstrated the suitability of the UASB and a packed-bed reactor for treating leachate from potato waste.}},
  author       = {{Parawira, Wilson and Murto, Marika and Zvauya, R and Mattiasson, Bo}},
  issn         = {{0960-1481}},
  keywords     = {{biogas; leachate; potato waste; anaerobic packed-bed; anaerobic digestion; methane yield; UASB}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{893--903}},
  publisher    = {{Elsevier}},
  series       = {{Renewable Energy}},
  title        = {{Comparative performance of a UASB reactor and an anaerobic packed-bed reactor when treating potato waste leachate}},
  url          = {{http://dx.doi.org/10.1016/j.renene.2005.05.013}},
  doi          = {{10.1016/j.renene.2005.05.013}},
  volume       = {{31}},
  year         = {{2006}},
}