Hydrothermal conversion of municipal organic waste into resources
- 作者：Goto ; Motonobu ; Obuchi ; Ryusaku ; Hirose ; Tsutomu ; Sakaki ; Tsuyoshi ; Shibata ; Masao
- 关键词：Hydrothermal reaction ; Subcritical water ; Decomposition ; Municipal waste ; Organic acid ; Glucose
- 刊名：Bioresource Technology
- 出版年：2004
- 期刊代码：11_09608524
- 类别：ce
- 出版时间：July, 2004
- 卷：93
- 期：3
- 页码：279-284
- 文件大小：353 K
摘要
Sub- and supercritical water have been focused on as an environmentally attractive reaction media where organic materials can be decomposed into smaller molecules. We applied a hydrothermal reaction in subcritical water to the treatment of rabbit food as a model municipal solid waste. The reaction was carried out in a batch reactor at the temperature range of 473–623 K or in a semi-continuous reactor with the temperature profile from 473 to 573 K. The liquid reaction products were separated into water-soluble and water-insoluble parts. The water-soluble part was analyzed in terms of glucose and organic acids. For the batch reactor, the largest amount of water-soluble component was approximately 50%. Major organic acids detected were acetic acid and lactic acid. The largest yields were 2.6%for acetic acid and 3.2%for lactic acid. The largest yield of glucose was 33%at 523 K. For the semi-continuous reactor, the glucose yields were 11.5%, 3.9%and 8.7%in each fraction obtained at 473, 523, and 573 K, respectively.