Strategies for augmenting the pentachlorophenol degradation potential of UASB anaerobic granules

DOI	Trouver le DOI : https://doi.org/10.2166/wst.2002.0283
Auteur	Rechercher : Guiot, S. R.¹; Rechercher : Tartakovsky, B.¹; Rechercher : Lanthier, M.; Rechercher : Lévesque, M.-J.¹; Rechercher : Manuel, M. F.¹; Rechercher : Beaudet, R.; Rechercher : Greer, C. W.¹; Rechercher : Villemur, R.
Affiliation	Conseil national de recherches Canada. Institut de recherche en biotechnologie du CNRC
Format	Texte, Article
Conférence	9th World Congress on Anaerobic Digestion, September 2-6, 2001, Antwerp, Belgium
Sujet	Bacteria, 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
Résumé	Anaerobic 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.
Date de publication	2002
Maison d’édition	IWA Publishing
Dans	Selected proceedings of the 9th World Congress on Anaerobic Digestion: held in Antwerp, Belgium, 2 - 6 September, 2001 (2002) : 35–41.
Série	Water Science and Technology 45, nº Anaerobic Digestion IX - Selected 10.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro du CNRC	NRC-BRI-44642 CPENV101
Numéro NPARC	12327871
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	fd44dff6-9dc4-45c7-b04d-e712dbc8cea1
Enregistrement créé	2009-09-10
Enregistrement modifié	2022-10-28

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