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Optimization of Initial Cell Density and Usage Efficiency of Seed Culture Medium During Lipid Production from Distillery Wastewater by Rhodosporidium toruloides Optimization of Initial Cell Density an
Jiayin Ling; Saiwa Nip; Renata Alves de Toledo; Hojae Shim
2014-04
Conference NameInternational Conference on Renewable Energies and Power Quality (ICREPQ’14)
Source PublicationRenewable Energy & Power Quality Journal
Volume1
Issue12
Pages130-134
Conference DateApril 8-10, 2014
Conference PlaceCordoba, Spain
Abstract

For the environmentally sustainable development, the recovery of resource or energy from wastes has attracted worldwide attention in recent years. The wastewater produced from distillery is more difficult to treat than the domestic wastewater due to the high organic loads. This study explores the possibility of developing a process, which could produce microbial lipid convertible to biodiesel by recovering nutrients from non-sterile wastewater while simultaneously removing part of organic matters through cultivating oleaginous microorganisms. Especially, it is intended to further optimize the initial cell density and the usage efficiency of seed culture medium. The lipid productivity by oleaginous yeast Rhodosporidium toruloides was studied using wastewater from rice wine distillery, at 30ºC under different initial cell densities (2 x 107, 1 x 107, 0.8 x 107, and 0.5 x 107 cells/mL) and incubation periods (2-5 days). Chemical oxygen demand (COD) removal efficiency, cell yield, and lipid yield were analyzed and the potential for bioenergy recovery from wastewater was assessed. The seed culture medium was found reusable for the second time without the addition of extra nutrient and possible for the third time with the addition of glucose.

KeywordInitial Cell Density Lipid Non-sterile Distillery Wastewater Oleaginous Yeast Seed Culture Medium
DOI10.24084/repqj12.259
Language英語English
Scopus ID2-s2.0-84978515431
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Document TypeConference paper
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
AffiliationDepartment of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau SAR, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Jiayin Ling,Saiwa Nip,Renata Alves de Toledo,et al. Optimization of Initial Cell Density and Usage Efficiency of Seed Culture Medium During Lipid Production from Distillery Wastewater by Rhodosporidium toruloides Optimization of Initial Cell Density an[C], 2014, 130-134.
APA Jiayin Ling., Saiwa Nip., Renata Alves de Toledo., & Hojae Shim (2014). Optimization of Initial Cell Density and Usage Efficiency of Seed Culture Medium During Lipid Production from Distillery Wastewater by Rhodosporidium toruloides Optimization of Initial Cell Density an. Renewable Energy & Power Quality Journal, 1(12), 130-134.
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