Journal
BIORESOURCE TECHNOLOGY
Volume 191, Issue -, Pages 481-487Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.02.013
Keywords
Algae; Cyanobacteria; Biofuel; Biovolume; Multivariate statistics
Funding
- Advanced Biomass R&D Center (ABC) of Global Frontier Project - Ministry of Education, Science and Technology [ABC-2011-0031351]
- Energy Efficiency & Resources Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korean Ministry of Knowledge Economy [2012T100201665]
- KRIBB Research Initiative Program
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Algae based wastewater treatment coupled to biofuel production has financial benefits and practical difficulties. This study evaluated the factors influencing diversity and growth of indigenous algal consortium cultivated on untreated municipal wastewater in a high rate algal pond (HRAP) for a period of 1 year using multivariate statistics. Diversity analyses revealed the presence of Chlorophyta, Cyanophyta and Bacillariophyta. Dominant microalgal genera by biovolume in various seasons were Scenedesmus sp., Microcystis sp., and Chlorella sp. Scenedesmus sp., persisted throughout the year but none of three strains co-dominated with the other. The most significant factors affecting genus dominance were temperature, inflow cyanophyta and organic carbon concentration. Cyanophyta concentration affected microalgal biomass and diversity, whereas temperature impacted biomass. Preferred diversity of microalgae is not sustained in wastewater systems but is obligatory for biofuel production. This study serves as a guideline to sustain desired microalgal consortium in wastewater treatment plants for biofuel production. (C) 2015 Elsevier Ltd. All rights reserved.
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