从活性污泥中分离和分析蜡酯。
Isolation and analysis of wax esters from activated sludge.
机构信息
Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 10607, Taiwan.
出版信息
Bioresour Technol. 2011 Oct;102(20):9518-23. doi: 10.1016/j.biortech.2011.08.005. Epub 2011 Aug 9.
Neutral lipid from activated sludge (AS) as a potential source for biodiesel production has recently received considerable attentions. The utilization of useful compounds in AS may help reducing the cost of biodiesel production from AS. One of these compounds is the valuable wax esters (WEs) found in AS from a food processing company in Taiwan. About 4.13% (based on dry sludge weight) bleached wax was obtained after pretreatment and bleaching of crude sludge wax obtained from the dewaxing of crude sludge oil. The major WEs detected in the bleached wax were C46-C60 with small amounts of C37-C43 and C62 WEs. The fatty acids (FAs) and fatty alcohols (FALs) profiles of WEs were also investigated. Activated sludge WEs are mainly mixture of C14-C28 FAs and C24-C37 FALs, in which the predominant FAs are C16 and C18 while the predominant FALs are C32 and C34.
活性污泥中的中性脂质作为生物柴油生产的潜在来源，最近受到了相当多的关注。利用活性污泥中的有用化合物可以帮助降低从活性污泥生产生物柴油的成本。这些化合物之一是在台湾一家食品加工公司的活性污泥中发现的有价值的蜡酯 (WE)。对从粗污泥油脱蜡得到的粗污泥蜡进行预处理和漂白后，得到了约 4.13%（基于干污泥重量）的漂白蜡。在漂白蜡中检测到的主要 WE 是 C46-C60，少量的 C37-C43 和 C62 WE。还研究了 WE 的脂肪酸 (FA) 和脂肪醇 (FAL) 分布。活性污泥 WE 主要是 C14-C28 FA 和 C24-C37 FAL 的混合物，其中主要的 FA 是 C16 和 C18，而主要的 FAL 是 C32 和 C34。
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