Surfactant-assisted direct biodiesel production from wet Nannochloropsis occulata by in situ transesterification/reactive extraction
Surfactant-assisted direct biodiesel production from wet Nannochloropsis occulata by in situ transesterification/reactive extraction
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DOI：
10.18331/brj2016.3.1.6
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
K. A. Salam;SB Velasquez-Orta;A. Harvey
中科院分区：
文献类型：
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作者：
K. A. Salam;SB Velasquez-Orta;A. Harvey
本文报道了以H2SO 4、十二烷基硫酸钠（SDS）+H2SO 4和十二烷基硫酸锆（ZDS）为原料，对微拟球藻（Nannochloropsis occulata）进行原位酯交换/反应萃取制备脂肪酸甲酯（FAME）的研究。通过ZDS产生最大67%的FAME产率。还通过用10%-30%（w/w）的蒸馏水水合藻类来研究在H2SO 4中包含十二烷基硫酸钠（SDS）对FAME增强和耐水性的影响。在H2SO 4中用SDS处理提高了FAME生产速率和该方法的耐水性。在H2SO 4中包含SDS在藻类中的20%水分下产生最大98.3%FAME产率。FAME浓度仅在藻类中的30%水分时开始减少。此外，在生物质或甲醇中存在少量水增加了脂质提取效率，提高了FAME产率，而不是抑制反应。
This article reports an in situ transesterification/reactive extraction of Nannochloropsis occulata for fatty acid methyl ester (FAME) production using H2SO4, sodium dodecyl sulphate (SDS) plus H2SO4 and zirconium dodecyl sulphate (ZDS). A maximum 67 % FAME yield was produced by ZDS. Effect of inclusion of sodium dodecyl sulphate (SDS) in H2SO4 for FAME enhancement and water tolerance was also studied by hydrating the algae with 10 % - 30 % distilled water (w/w) dry algae. Treatment with SDS in H2SO4 increases the FAME production rate and water tolerance of the process. Inclusion of SDS in H2SO4 produced a maximum 98.3 % FAME yield at 20 % moisture in the algae. The FAME concentration began to diminish only at 30 % moisture in the algae. Furthermore, the presence of a small amount of water in the biomass or methanol increased the lipid extraction efficiency, improving the FAME yield, rather than inhibiting the reaction.