期刊
BIORESOURCE TECHNOLOGY
卷 174, 期 -, 页码 167-175出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.10.003
关键词
Sewage sludge; Supercritical water gasification; Phosphorus; Leaching; Oxalic acid
资金
- BE2.O (BioEnergy to Overijssel)
- EPM/CIIEN
- COLCIENCIAS [1115-4547-21979]
- University of Antioquia
- COLCIENCIAS
In this study, the feasibility of the gasification of dewatered sewage sludge in supercritical water (SCW) for energy recovery combined with P-recovery from the solid residue generated in this process was investigated. SCWG temperature (400 degrees C, 500 degrees C, 600 degrees C) and residence time (15 min, 30 min, 60 min) were varied to investigate their effects on gas production and the P recovery by acid leaching. The results show that the dry gas composition for this uncatalyzed gasification of sewage sludge in SCW mainly comprised of CO2, CO, CH4, H-2, and some C2-C3 compounds. Higher temperatures and longer residence times favored the production of H-2 and CH4. After SCWG, more than 95% of the P could be recovered from the solid residue by leaching with acids. SCWG combined with acid leaching seems an effective method for both energy recovery and high P recovery from sewage sludge. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据