Imperial College London
Alternate

ProfessorStephenSmith

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Bioresource Systems
 
 
 
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Contact

 

+44 (0)20 7594 6051s.r.smith

 
 
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Assistant

 

Miss Judith Barritt +44 (0)20 7594 5967

 
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Location

 

229Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Barber:2020:10.3390/microorganisms8010122,
author = {Barber, EA and Liu, Z and Smith, SR},
doi = {10.3390/microorganisms8010122},
journal = {Microorganisms},
title = {Organic contaminant biodegradation by oxidoreductase enzymes in wastewater treatment},
url = {http://dx.doi.org/10.3390/microorganisms8010122},
volume = {8},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Organic contaminants (OCs), such as pharmaceuticals, personal care products, flame retardants, and plasticisers, are societally ubiquitous, environmentally hazardous, and structurally diverse chemical compounds whose recalcitrance to conventional wastewater treatment necessitates the development of more effective remedial alternatives. The engineered application of ligninolytic oxidoreductase fungal enzymes, principally white-rot laccase, lignin peroxidase, and manganese peroxidase, has been identified as a particularly promising approach for OC remediation due to their strong oxidative power, broad substrate specificity, low energy consumption, environmental benignity, and cultivability from lignocellulosic waste. By applying an understanding of the mechanisms by which substrate properties influence enzyme activity, a set of semi-quantitative physicochemical criteria (redox potential, hydrophobicity, steric bulk and pKa) was formulated, against which the oxidoreductase degradation susceptibility of twenty-five representative OCs was assessed. Ionisable, compact, and electron donating group (EDG) rich pharmaceuticals and antibiotics were judged the most susceptible, whilst hydrophilic, bulky, and electron withdrawing group (EWG) rich polyhalogenated compounds were judged the least susceptible. OC susceptibility scores were in general agreement with the removal rates reported for experimental oxidoreductase treatments (R2 = 0.60). Based on this fundamental knowledge, and recent developments in enzyme immobilisation techniques, microbiological enzymic treatment strategies are proposed to formulate a new generation of biological wastewater treatment processes for the biodegradation of environmentally challenging OC compounds.
AU  - Barber,EA
AU  - Liu,Z
AU  - Smith,SR
DO  - 10.3390/microorganisms8010122
PY  - 2020///
SN  - 2076-2607
TI  - Organic contaminant biodegradation by oxidoreductase enzymes in wastewater treatment
T2  - Microorganisms
UR  - http://dx.doi.org/10.3390/microorganisms8010122
UR  - https://www.ncbi.nlm.nih.gov/pubmed/31963268
UR  - http://hdl.handle.net/10044/1/76955
VL  - 8
ER  -
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