Decomposition of ammonia and hydrogen sulfide in simulated sludge drying waste gas by a novel non-thermal plasma

被引：24

作者：

Lu, Shengyong ^{[1
]}

Chen, Lu ^{[1
]}

Huang, Qunxing ^{[1
]}

Yang, Liqin ^{[1
]}

Du, Changming ^{[1
]}

Li, Xiaodong ^{[1
]}

Yan, Jianhua ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

CHEMOSPHERE | 2014年 / 117卷

基金：

中国国家自然科学基金;

关键词：

Plasma; Gliding arc; Ammonia; Hydrogen sulfide; Sludge drying waste gas; PULSE CORONA REACTOR; DISCHARGE PLASMA; EMISSION CHARACTERISTICS; REMOVAL; ARC; VOCS; NH3; H2S;

D O I：

10.1016/j.chemosphere.2014.10.036

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To efficiently clean NH3 and H2S contained in municipal sewage sludge drying waste gas, experiments were conducted with a novel gliding arc discharge plasma reactor. Important parameters including applied voltage and gas velocity which can strongly influence the removal efficiency, energy cost and by-products yields were investigated. Maximum removal efficiencies were all obtained at the applied voltage of 11 kV and gas velocity of 4.72 m s(-1). When NH3 and H2S were treated together, the total energy cost decreased by 38%. NO and SO2 were observed as main decomposition by-products, and the presence of NH3 may inhibit the production of SO2 whose yield decreased from 223.8 to 27.8 mg m(-3). Tests performed on lab scale reactor showed that gliding arc discharge is efficient in decreasing the NH3 and H2S concentrations, and experiments will also be conducted on a larger scale reactor in the future. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：781 / 785

页数：5

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