Feasibility of using a microalgal-bacterial consortium for treatment of toxic coke wastewater with concomitant production of microbial lipids

This study examined the feasibility of using an algal-bacterial process for removal of phenol and NH4+- N from differently diluted coke wastewater with simultaneous production of biomass. Under illumination, microalgal-bacterial (MSB) cultures performed complete phenol degradation at all dilutions of coke wastewater while sole microalgal culture (MSA) degraded a maximum of 27.3% of phenol (initial concentration: 24.0 mg L-1) from 5-fold diluted wastewater. Furthermore, the MSB culture had the highest rate of NH4+-N removal (8.3 mg L-1 d(-1)) and fatty acid production (20 mg L-1 d(-1)) which were 2.3-and 1.5-fold higher than those observed in the MSA cultures, probably due to decreases in toxic organic pollutants. Multivariate analyses indicated that co-cultivation of activated sludge was directly correlated with the elevated removals of phenol and NH4+-N. In the presence of sludge, adequate dilution of the coke wastewater can maximize the effect of bacteria on NH4+-N removal and biomass production. (C) 2016 Elsevier Ltd. All rights reserved.
Publisher
ELSEVIER SCI LTD
Issue Date
2017-02
Language
English
Keywords

ACTIVATED-SLUDGE; CHLORELLA-VULGARIS; NITROGEN REMOVAL; MEDIATED PROCESS; FATTY-ACIDS; CARBON; BIODEGRADATION; DEGRADATION; THIOCYANATE; ALGAE

Citation

BIORESOURCE TECHNOLOGY, v.225, pp.58 - 66

ISSN
0960-8524
DOI
10.1016/j.biortech.2016.11.029
URI
http://hdl.handle.net/10203/214373
Appears in Collection
CE-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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