1. Feasibility of using a microalgal-bacterial consortium for treatment of toxic coke wastewater with concomitant production of microbial lipids.
- Author
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Ryu BG, Kim J, Han JI, and Yang JW
- Subjects
- Ammonium Compounds isolation & purification, Bacteria growth & development, Biodegradation, Environmental, Biological Oxygen Demand Analysis, Biomass, Chlorophyll metabolism, Chlorophyll A, Esters analysis, Fatty Acids metabolism, Feasibility Studies, Microalgae growth & development, Nitrogen isolation & purification, Phenol metabolism, Sewage microbiology, Solubility, Volatilization, Bacteria metabolism, Coke analysis, Lipids biosynthesis, Microalgae metabolism, Wastewater microbiology, Water Purification methods
- Abstract
This study examined the feasibility of using an algal-bacterial process for removal of phenol and NH
4 + -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: 24.0mgL-1 ) from 5-fold diluted wastewater. Furthermore, the MSB culture had the highest rate of NH4 + -N removal (8.3mgL-1 d-1 ) and fatty acid production (20mgL-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., (Copyright © 2016 Elsevier Ltd. All rights reserved.)- Published
- 2017
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