Nitrogen transformation among char, tar and gas during pyrolysis of sewage sludge and corresponding hydrochar

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 固体废弃物处理与资源化实验室

	Nitrogen transformation among char, tar and gas during pyrolysis of sewage sludge and corresponding hydrochar
	Liu, Zhengang; Liu, Tingting; Guo, Yanchuan; Peng, Nana; Lang, Qianqian; Xia, Yu; Gai, Chao
刊名	JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
	2017-07-01
卷号	126 期号:0 页码:298-306
关键词	Sewage Sludge Hydrothermal Carbonization Hydrochar Pyrolysis Nh3 Hcn
英文摘要	Hydrothermal carbonization (HTC) is a promising thermochemical pretreatment to convert sewage sludge into the hydrochar prior to combustion or pyrolysis for energy generation. To investigate the effects of HTC on nitrogen transformation behaviors, pyrolysis of sewage sludge and the corresponding hydrochar were conducted. The results showed nitrogen in the hydrochar existed in more stable forms, making more nitrogen retained in the char for the hydrochar pyrolysis. Amine-N, heterocyclic-N and nitrile-N were detected in significant amounts for sewage sludge pyrolysis tar, which contributed to predominant (NH3 + HCN)-N emission. Lower amine-N and heterocyclic-N content but higher alkyl nitrile-N content were observed in the hydrochar pyrolysis tar, which might explain the increase in HCN/NH3 ratio. More importantly, the (NH3 + HCN)-N yield from the hydrochar pyrolysis was considerably lower than that from sewage sludge pyrolysis, especially at temperatures higher than 650 degrees C. Taking account of the much lower nitrogen content, the total (NH3 + HCN)-N emission from the hydrochar pyrolysis was only 35.6-48.2% of that from sewage sludge pyrolysis. The results suggested that HTC pretreatment of sewage sludge for energy production has the additional environmental benefit of mitigating nitrogenous pollutants emission.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39227]
专题	生态环境研究中心_固体废弃物处理与资源化实验室
推荐引用方式 GB/T 7714	Liu, Zhengang,Liu, Tingting,Guo, Yanchuan,et al. Nitrogen transformation among char, tar and gas during pyrolysis of sewage sludge and corresponding hydrochar[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2017,126(0):298-306.
APA	Liu, Zhengang.,Liu, Tingting.,Guo, Yanchuan.,Peng, Nana.,Lang, Qianqian.,...&Gai, Chao.(2017).Nitrogen transformation among char, tar and gas during pyrolysis of sewage sludge and corresponding hydrochar.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,126(0),298-306.
MLA	Liu, Zhengang,et al."Nitrogen transformation among char, tar and gas during pyrolysis of sewage sludge and corresponding hydrochar".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 126.0(2017):298-306.