Low-temperature anaerobic treatment of low-strength pentachlorophenol-bearing wastewater

Lopez, J., Monsalvo, V. M., Puyol, D., Mohedano, A. F. and Rodriguez, J. J. (2013) Low-temperature anaerobic treatment of low-strength pentachlorophenol-bearing wastewater. Bioresource Technology, 140 349-356. doi:10.1016/j.biortech.2013.04.049

Author Lopez, J.
Monsalvo, V. M.
Puyol, D.
Mohedano, A. F.
Rodriguez, J. J.
Title Low-temperature anaerobic treatment of low-strength pentachlorophenol-bearing wastewater
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
Publication date 2013-01-01
Sub-type Article (original research)
DOI 10.1016/j.biortech.2013.04.049
Open Access Status Not yet assessed
Volume 140
Start page 349
End page 356
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract The anaerobic treatment of low-strength wastewater bearing pentachlorophenol (PCP) at psychro-mesophilic temperatures has been investigated in an expanded granular sludge bed reactor. Using an upward flow rate of 4mh-1, a complete removal of PCP, as well as COD removal and methanization efficiencies higher than 75% and 50%, respectively, were achieved. Methanogenesis and COD consumption were slightly affected by changes in loading rate, temperature (17-28°C) and inlet concentrations of urea and oils. Pentachlorophenol caused an irreversible inhibitory effect over both acetoclastic and hydrogenotrophic methanogens, being the later more resistant to the toxic effect of pentachlorophenol. An auto-inhibition phenomenon was observed at PCP concentrations higher than 10mgL-1, which was accurately predicted by a Haldane-like model. The inhibitory effect of PCP over the COD consumption and methane production was modelled by modified pseudo-Monod and Roediger models, respectively.
Keyword Expanded granular sludge bed reactor
Low-strength wastewater
Low-temperature anaerobic treatment
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
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