Kolesárová Nina, Hutňan Miroslav, Bodík Igor, Spalková Viera
Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
J Biomed Biotechnol. 2011;2011:126798. doi: 10.1155/2011/126798. Epub 2011 Feb 23.
This contribution reviews the possibility of using the by-products from biodiesel production as substrates for anaerobic digestion and production of biogas. The process of biodiesel production is predominantly carried out by catalyzed transesterification. Besides desired methylesters, this reaction provides also few other products, including crude glycerol, oil-pressed cakes, and washing water. Crude glycerol or g-phase is heavier separate liquid phase, composed mainly by glycerol. A couple of studies have demonstrated the possibility of biogas production, using g-phase as a single substrate, and it has also shown a great potential as a cosubstrate by anaerobic treatment of different types of organic waste or energy crops. Oil cakes or oil meals are solid residues obtained after oil extraction from the seeds. Another possible by-product is the washing water from raw biodiesel purification, which is an oily and soapy liquid. All of these materials have been suggested as feasible substrates for anaerobic degradation, although some issues and inhibitory factors have to be considered.
本文献综述了将生物柴油生产的副产品用作厌氧消化底物及生产沼气的可能性。生物柴油生产过程主要通过催化酯交换反应进行。除了所需的甲酯外，该反应还产生其他一些产物，包括粗甘油、油饼和洗涤水。粗甘油或甘油相是较重的分离液相，主要由甘油组成。一些研究已经证明了以甘油相作为单一底物生产沼气的可能性，并且通过厌氧处理不同类型的有机废物或能源作物，它作为共底物也显示出巨大潜力。油饼或油粕是种子榨油后得到的固体残渣。另一种可能的副产品是生物柴油粗品纯化过程中的洗涤水，它是一种含油且呈皂状的液体。所有这些物质都被认为是厌氧降解的可行底物，尽管必须考虑一些问题和抑制因素。
