The effect of hydrothermal dewatering of Pontianak tropical peat on organics in wastewater and gaseous products

Anggoro Tri Mursito, Tsuyoshi Hirajima, Keiko Sasaki, Satoshi Kumagai

研究成果: Contribution to journalArticle査読

48 被引用数 (Scopus)

抄録

This paper describes a study of the effects of hydrothermal dewatering of raw tropical peat from Pontianak, West Kalimantan-Indonesia, on the amounts of organic compounds released into wastewater and gaseous products. Hydrothermal upgrading and dewatering of the peat was carried out in a batch-type autoclave reactor at temperatures between 150 and 380 °C at a maximum pressure of 25.1 MPa for 30 min. It was found that the extent of decomposition of organics during hydrothermal dewatering depended on temperature increase. Wastewater from hydrothermal dewatering was found to contain organic carbon (TOC) ranging from 800 ppm at low temperatures, to 7504 ppm at high temperatures. A number of sugars and furans were detected in the wastewater at 250 °C, and organic acids and alcohols at all temperatures. Phenol and phenolic derivatives were observed at 250 °C, and significant amounts of CO2, CO and H 2 were detected at all temperatures studied; CH4 was detected only at 380 °C, but at this temperature CO2 was no longer detected. A simplified schematic diagram of the decomposition behavior of tropical peat in the hydrothermal dewatering process is discussed with respect to the change in the concentration of organics in wastewater and gaseous products as determined by TOC, GC, GC-MS and 13C NMR analyses of the solids produced.

本文言語英語
ページ(範囲)3934-3942
ページ数9
ジャーナルFuel
89
12
DOI
出版ステータス出版済み - 12 1 2010

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 燃料技術
  • エネルギー工学および電力技術
  • 有機化学

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