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Forskningsartikel2005Vetenskapligt granskad

Effects of temperature on biological degradation of phenols, benzoates and phthalates under methanogenic conditions

Leven L, Schnurer A

Sammanfattning

The effect of temperature on the efficiency of degradation of the aromatic compounds benzoic acid, 2,3,5-trichlorobenzoic acid, phthalic acid, methyl- and ethylphthalate, resorcinol, phenol, pentachlorophenol, 4-nitrophenol, 4-ethylphenol and o-, m- and p-cresol by a mesophilic or a thermophilic anaerobic community was examined. Anaerobic batch systems were incubated at different temperatures and inoculated with microbial communities from either of two biogas reactors fed with the same substrate, but run at 37 degreesC or 55 degreesC. Benzoic acid, phthalic acid, methylphthalate, phenol, m- and p-cresol were mineralised by the mesophilic cultures incubated at 37 degreesC. Apart from benzoic acid, no aromatic compounds were mineralised by the thermophilic community incubated at 55 degreesC, suggesting that channelling reactions to the central intermediate benzoyl-CoA were inoperative in this microbial community. The restricted degradation of phenols observed at 55 degreesC was confirmed by chemical analyses of the anaerobic digestion residue, which contained a higher level of phenols (322 mugg(-1) total solids) in the system that was run at 55 degreesC than that run at 37 degreesC (65 mugg(-1)). However, a decrease from 55 degreesC to 48 degreesC triggered the degradation of phenol by the thermophilic batch system, most likely due to an activation of enzymes involved in the phenol degradation. (C) 2004 Elsevier Ltd. All rights reserved

Publicerad i

International Biodeterioration and Biodegradation
2005, volym: 55, nummer: 2, sidor: 153-160
Utgivare: ELSEVIER SCI LTD

SLU författare

UKÄ forskningsämne

Jordbruksvetenskap
Miljö- och naturvårdsvetenskap

Publikationens identifierare

  • DOI: https://doi.org/10.1016/j.ibiod.2004.09.004

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/5617