Simultaneous chromium(VI) reduction and phenol degradation in a fixed-film coculture bioreactor: Reactor performance

Evans M. Nkhalambayausi-Chirwa; Yi Tin Wang

doi:10.1016/S0043-1354(00)00472-3

Simultaneous chromium(VI) reduction and phenol degradation in a fixed-film coculture bioreactor: Reactor performance

Evans M. Nkhalambayausi-Chirwa, Yi Tin Wang

Civil Engineering

Research output: Contribution to journal › Article › peer-review

79 Scopus citations

Abstract

Simultaneous Cr(VI) reduction and phenol degradation was observed in a fixed-film bioreactor consisting of a coculture of phenol-degrading bacteria, Pseudomonas putida DMP-1, and Cr(VI)-reducing bacteria, Escherichia coli ATCC 33456. Near complete Cr(VI) reduction and phenol degradation was observed during steady-state operation of the reactor under loadings of 5-21mg Cr(VI) l^-1d^-1 and 840-3350mg phenol l^-1d^-1. 2-hydroxymuconic semialdehyde (2HMSA), succinate, and acetate were the detected steady-state organic acid metabolites which accounted for 13-23% of TOC in the effluent. Optimum Cr(VI) reduction rate was observed under a Cr(VI) loading of approximately 26.5mg Cr(VI) l^-1d^-1 just before system overload. System overload was characterized by the increase in effluent Cr(VI) and phenol concentrations. System resilience to Cr(VI) toxicity was demonstrated by rapid recovery of biological activity and reduced effluent Cr(VI) and phenol concentrations after off-loading the system from overloaded conditions.

Original language	English
Pages (from-to)	1921-1932
Number of pages	12
Journal	Water Research
Volume	35
Issue number	8
DOIs	https://doi.org/10.1016/S0043-1354(00)00472-3
State	Published - 2001

Bibliographical note

Funding Information:
This work was supported by the United States Environmental Protection Agency through an exploratory research grant awarded to Yi-Tin Wang under the agreement R-822307-01-0 and partially by University of Kentucky Graduate School. We would also like to thank Jan Pyrek of University of Kentucky College of Pharmacy for the help with GC-MS.

Keywords

Biofilm
Chromium
Diffusion-reaction
Escherichia coli ATCC 33456
Fixed-film coculture
Mass transport
Phenol
Pseudomonas putida DMP-1

ASJC Scopus subject areas

Water Science and Technology
Ecological Modeling
Pollution
Waste Management and Disposal
Environmental Engineering
Civil and Structural Engineering

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10.1016/S0043-1354(00)00472-3

Cite this

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title = "Simultaneous chromium(VI) reduction and phenol degradation in a fixed-film coculture bioreactor: Reactor performance",

abstract = "Simultaneous Cr(VI) reduction and phenol degradation was observed in a fixed-film bioreactor consisting of a coculture of phenol-degrading bacteria, Pseudomonas putida DMP-1, and Cr(VI)-reducing bacteria, Escherichia coli ATCC 33456. Near complete Cr(VI) reduction and phenol degradation was observed during steady-state operation of the reactor under loadings of 5-21mg Cr(VI) l-1d-1 and 840-3350mg phenol l-1d-1. 2-hydroxymuconic semialdehyde (2HMSA), succinate, and acetate were the detected steady-state organic acid metabolites which accounted for 13-23% of TOC in the effluent. Optimum Cr(VI) reduction rate was observed under a Cr(VI) loading of approximately 26.5mg Cr(VI) l-1d-1 just before system overload. System overload was characterized by the increase in effluent Cr(VI) and phenol concentrations. System resilience to Cr(VI) toxicity was demonstrated by rapid recovery of biological activity and reduced effluent Cr(VI) and phenol concentrations after off-loading the system from overloaded conditions.",

keywords = "Biofilm, Chromium, Diffusion-reaction, Escherichia coli ATCC 33456, Fixed-film coculture, Mass transport, Phenol, Pseudomonas putida DMP-1",

author = "Nkhalambayausi-Chirwa, {Evans M.} and Wang, {Yi Tin}",

note = "Funding Information: This work was supported by the United States Environmental Protection Agency through an exploratory research grant awarded to Yi-Tin Wang under the agreement R-822307-01-0 and partially by University of Kentucky Graduate School. We would also like to thank Jan Pyrek of University of Kentucky College of Pharmacy for the help with GC-MS. ",

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language = "English",

volume = "35",

pages = "1921--1932",

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TY - JOUR

T1 - Simultaneous chromium(VI) reduction and phenol degradation in a fixed-film coculture bioreactor

T2 - Reactor performance

AU - Nkhalambayausi-Chirwa, Evans M.

AU - Wang, Yi Tin

N1 - Funding Information: This work was supported by the United States Environmental Protection Agency through an exploratory research grant awarded to Yi-Tin Wang under the agreement R-822307-01-0 and partially by University of Kentucky Graduate School. We would also like to thank Jan Pyrek of University of Kentucky College of Pharmacy for the help with GC-MS.

PY - 2001

Y1 - 2001

N2 - Simultaneous Cr(VI) reduction and phenol degradation was observed in a fixed-film bioreactor consisting of a coculture of phenol-degrading bacteria, Pseudomonas putida DMP-1, and Cr(VI)-reducing bacteria, Escherichia coli ATCC 33456. Near complete Cr(VI) reduction and phenol degradation was observed during steady-state operation of the reactor under loadings of 5-21mg Cr(VI) l-1d-1 and 840-3350mg phenol l-1d-1. 2-hydroxymuconic semialdehyde (2HMSA), succinate, and acetate were the detected steady-state organic acid metabolites which accounted for 13-23% of TOC in the effluent. Optimum Cr(VI) reduction rate was observed under a Cr(VI) loading of approximately 26.5mg Cr(VI) l-1d-1 just before system overload. System overload was characterized by the increase in effluent Cr(VI) and phenol concentrations. System resilience to Cr(VI) toxicity was demonstrated by rapid recovery of biological activity and reduced effluent Cr(VI) and phenol concentrations after off-loading the system from overloaded conditions.

AB - Simultaneous Cr(VI) reduction and phenol degradation was observed in a fixed-film bioreactor consisting of a coculture of phenol-degrading bacteria, Pseudomonas putida DMP-1, and Cr(VI)-reducing bacteria, Escherichia coli ATCC 33456. Near complete Cr(VI) reduction and phenol degradation was observed during steady-state operation of the reactor under loadings of 5-21mg Cr(VI) l-1d-1 and 840-3350mg phenol l-1d-1. 2-hydroxymuconic semialdehyde (2HMSA), succinate, and acetate were the detected steady-state organic acid metabolites which accounted for 13-23% of TOC in the effluent. Optimum Cr(VI) reduction rate was observed under a Cr(VI) loading of approximately 26.5mg Cr(VI) l-1d-1 just before system overload. System overload was characterized by the increase in effluent Cr(VI) and phenol concentrations. System resilience to Cr(VI) toxicity was demonstrated by rapid recovery of biological activity and reduced effluent Cr(VI) and phenol concentrations after off-loading the system from overloaded conditions.

KW - Biofilm

KW - Chromium

KW - Diffusion-reaction

KW - Escherichia coli ATCC 33456

KW - Fixed-film coculture

KW - Mass transport

KW - Phenol

KW - Pseudomonas putida DMP-1

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ER -

Simultaneous chromium(VI) reduction and phenol degradation in a fixed-film coculture bioreactor: Reactor performance

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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