Strategies for augmenting the pentachlorophenol degradation potential of UASB anaerobic granules

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TypeArticle
Proceedings titleWater Science and Technology
ConferenceThe 9th World Congress on Anaerobic Digestion: Antwerp, Belgium, 2-6 September, 2001
ISSN0273-1223
ISBN9781843394181
Volume45
IssueAnaerobic Digestion IX - Selected 10
Pages3541; # of pages: 7
SubjectBacteria, anaerobic; anaerobic granule; bioaugmentation; desulfitobacterium frappieri; FISH; on-line control; PCR; pentachlorophenol; selective stress; biodegradation, environmental; biofilms; biomass; bioreactors; DNA, bacterial; environmental pollutants; gram-positive bacteria; in situ hybridization, fluorescence; particle size; pentachlorophenol; polymerase chain reaction; crossgroup; env
AbstractAnaerobic degradation of pentachlorophenol (PCP) is an example of a process that may benefit from enrichment or bioaugmentation. In one approach, enrichment acceleration was attempted by applying an on-line control-based selective stress strategy to a native anaerobic upflow sludge bed (UASB) system; this strategy linked PCP loading rate to methane production. As a result, the reactor biomass potential for PCP complete dechlorination reached a rate of 4 mg g⁻¹ volatile suspended solid (VSS) day⁻¹ within a period of 120 days. In another approach, a pure culture, Desulfitobacterium frappieri PCP-1, a strictly anaerobic Gram-positive bacterium, was used to augment the granular biomass of the UASB reactor. This also resulted in a specific degradation rate of 4 mg PCPg⁻¹ VSS day⁻¹; however, this potential was attained within 56 days. Fluorescent in situ hybridization (FISH) showed that the PCP-1 strain was able to rapidly attach to the granule and densely colonize the outer biofilm layer.
Publication date
Linkhttp://www.iwaponline.com/wst/04510/wst045100035.htm
LanguageEnglish
AffiliationNational Research Council Canada; NRC Biotechnology Research Institute
Peer reviewedNo
Identifier1026193x
NRC number44642
CPENV101
NPARC number12327871
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Record identifierfd44dff6-9dc4-45c7-b04d-e712dbc8cea1
Record created2009-09-10
Record modified2016-05-09
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