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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
2020-05-26 02:10:08
@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},
  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},
}