NDLI: Growth of Chlorella vulgaris on Sugarcane Vinasse: The Effect of Anaerobic Digestion Pretreatment

Content Provider	Springer Nature Link
Author	Marques, Sheyla Santa Isabel Nascimento, Iracema Andrade Almeida, Paulo Fernando Chinalia, Fábio Alexandre
Copyright Year	2013
Abstract	Microalgae farming has been identified as the most eco-sustainable solution for producing biodiesel. However, the operation of full-scale plants is still limited by costs and the utilization of industrial and/or domestic wastes can significantly improve economic profits. Several waste effluents are valuable sources of nutrients for the cultivation of microalgae. Ethanol production from sugarcane, for instance, generates significant amounts of organically rich effluent, the vinasse. After anaerobic digestion treatment, nutrient remaining in such an effluent can be used to grow microalgae. This research aimed to testing the potential of the anaerobic treated vinasse as an alternative source of nutrients for culturing microalgae with the goal of supplying the biodiesel industrial chain with algal biomass and oil. The anaerobic process treating vinasse reached a steady state at about 17 batch cycles of 24 h producing about 0.116 m$^{3}$CH$_{4}$ kgCOD$_{vinasse}$ $^{−1}$. The highest productivity of Chlorella vulgaris biomass (70 mg l$^{−1}$ day$^{−1}$) was observed when using medium prepared with the anaerobic digester effluent. Lipid productivity varied from 0.5 to 17 mg l$^{−1}$ day$^{−1}$. Thus, the results show that it is possible to integrate the culturing of microalgae with the sugarcane industry by means of anaerobic digestion of the vinasse. There is also the advantageous possibility of using by-products of the anaerobic digestion such as methane and CO$_{2}$ for sustaining the system with energy and carbon source, respectively.
Starting Page	1933
Ending Page	1943
Page Count	11
File Format	PDF
ISSN	02732289
Journal	Applied Biochemistry and Biotechnology
Volume Number	171
Issue Number	8
e-ISSN	15590291
Language	English
Publisher	Springer US
Publisher Date	2013-09-07
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Vinasse Anaerobic digestion Microalgae and biofuels Biotechnology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Biology Environmental Engineering Biochemistry Bioengineering Applied Microbiology and Biotechnology Biotechnology

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