Simultaneous nutrient removal, optimised CO2 mitigation and biofuel feedstock production by Chlorogonium sp grown in secondary treated non-sterile saline sewage effluent
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AbstractThe phycoremediation process has great potential for effectively addressing environmental pollution. To explore the capabilities of simultaneous algal nutrient removal, CO2 mitigation and biofuel feedstock production from spent water resources, a Chlorogonium sp. isolated from a tilapia pond in Hong Kong was grown in non-sterile saline sewage effluent for a bioremediation study. With high removal efficiencies of NH3-N (88.35 +/- 14.39%), NO3--N (85.39 +/- 14.96%), TN (9334 +/- 6.47%) and PO43- -P (91.80 +/- 17.44%), Chlorogonium sp. achieved a CO2 consumption rate of 58.96 mg L-1 d(-1), which was optimised by the response surface methodology. Under optimised conditions, the lipid content of the algal biomass reached 24.26 +/- 2.67%. Overall, the isolated Chlorogonium sp. showed promising potential in the simultaneous purification of saline sewage effluent in terms of tertiary treatment and CO2 sequestration while delivering feedstock for potential biofuel production in a waste-recycling manner. (C) 2015 Elsevier B.V. All rights reserved.
All Author(s) ListLee KY, Ng TW, Li GY, An TC, Kwan KK, Chan KM, Huang GC, Yip HY, Wong PK
Journal nameJournal of Hazardous Materials
Volume Number297
Pages241 - 250
LanguagesEnglish-United Kingdom
KeywordsAlgal biofuel; CO2 capture; Microalgae; Phycoremediation; Saline sewage effluent treatment
Web of Science Subject CategoriesEngineering; Engineering, Civil; Engineering, Environmental; Environmental Sciences; Environmental Sciences & Ecology

Last updated on 2020-05-08 at 03:08