期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 19, 页码 9286-9290出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.06.084
关键词
Transesterification; Fatty acid methyl ester (FAME); Saturated fatty acid (SFA); Substrate degradation
资金
- Council for Scientific and Industrial Research (CSIR), New Delhi
The study documented the potential of isolated filamentous fungus Aspergillus sp. as whole cell biocatalyst for biodiesel production using Sabourauds dextrose broth medium (SDBM) and corncob waste liquor (CWL) as substrates. SDBM showed improvement in both biomass production (13.6g dry weight/1000 ml) and lipid productivity (23.3%) with time. Lipid extraction was performed by direct (DIE) and indirect (IDTE) transesterification methods. DTE showed higher transesterification efficiency with broad spectrum of fatty acids profile over IDTE. CWL as substrate showed good lipid productivity (22.1%; 2 g dry biomass; 48 h) along with efficient substrate degradation. Lipids derived from both substrates depicted high fraction of saturated fatty acids than unsaturated ones. Physical characteristics of fungal based biodiesel correlated well with prescribed standards. CWL derived biodiesel showed relatively good fuel properties (acid number, 0.40 mg KOH/g of acid; iodine value, 11 g l(2)/100 g oil; density, 0.8342 g/cm(3)) than SDBM derived biodiesel. (C) 2011 Elsevier Ltd. All rights reserved.
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