Biological and Agricultural Engineering Department, Louisiana State University, 149 E.B. Doran Bldg., Baton Rouge, LA 70803, USA.
Bioresour Technol. 2012 Mar;107:456-63. doi: 10.1016/j.biortech.2011.12.061. Epub 2011 Dec 21.
A bench scale hydrothermal liquefaction (HTL) system was tested using dairy manure to explore biooil production and waste treatment potential. Carbon monoxide was used as the process gas and sodium carbonate (Na(2)CO(3)) as catalyst. At a 350°C process temperature, the HTL unit produced 3.45 g (± 0.21) of acetone soluble oil fractions (ASF), with an average Higher Heating Value of 32.16 (± 0.23) MJ kg(-1). A maximum ASF yield of 4.8 g was produced at a process temperature of 350°C and 1g of catalyst. The best ASF yield corresponded to 67.6% of energy contained in the raw manure. GC-MS analysis of ASF indicated that the highest quantities of phenolic compounds were formed when 1g catalyst was used. Chemical Oxygen Demand (COD) reduction in the dischargeable slurry was as high as 75%. The results point to an alternative dairy waste treatment technology with a potential to generate transportable biooils.
采用奶牛粪便作为原料，利用中试规模的水热液化（HTL）系统来探索生物油生产和废物处理的潜力。本研究使用一氧化碳作为工艺气体，碳酸钠（Na(2)CO(3)）作为催化剂。在 350°C 的工艺温度下，HTL 单元产生了 3.45 克（± 0.21）可溶于丙酮的油馏分（ASF），平均高位发热量为 32.16（± 0.23）MJ kg(-1)。在 350°C 的工艺温度和 1g 催化剂的条件下，ASF 的最大产率为 4.8 克。最佳的 ASF 产率对应于原始粪便中所含能量的 67.6%。ASF 的 GC-MS 分析表明，当使用 1g 催化剂时，形成了最高数量的酚类化合物。可排放泥浆中的化学需氧量（COD）减少了高达 75%。这些结果表明，该技术为奶牛粪便处理提供了一种有潜力的替代方案，可以生成可运输的生物油。
