期刊
BIORESOURCE TECHNOLOGY
卷 209, 期 -, 页码 133-141出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.02.069
关键词
Bioethanol feedstock; Fed batch; Mixotrophic culture; Diluted culture medium
资金
- National Council for Scientific and Technological Development (CNPq)
- Coordination of Improvement of Higher Education Personnel (CAPES)
- Foundation for the Support of the Rio Grande do Sul State Research (FAPERGS)
Non-renewable sources that will end with time are the largest part of world energy consumption, which emphasizes the necessity to develop renewable sources of energy. This necessity has created opportunities for the use of microalgae as a biofuel. The use of microalgae as a feedstock source for bioethanol production requires high yields of both biomass and carbohydrates. With mixotrophic cultures, wastewater can be used to culture algae. The aim of the study was to increase the carbohydrate content in the microalgae Spirulina with the additions of residues from the ultra and nanofiltration of whey protein. The nutrient deficit in the Zarrouk medium diluted to 20% and the addition of 2.5% of both residue types led to high carbohydrate productivity (60 mg L-1 d(-1)). With these culture conditions, the increase in carbohydrate production in Spirulina indicated that the conditions were appropriate for use with microalgae as a feedstock in the production of bioethanol. (C) 2016 Elsevier Ltd. All rights reserved.
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