Effect of ammonium sulfate and urea on PCDD/F formation from active carbon and possible mechanism of inhibition

被引：0

作者：

Mi Yan ^{[1
,2
]}

Zhifu Qi ^{[2
]}

Jie Yang ^{[2
]}

Xiaodong Li ^{[2
]}

Jianli Ren ^{[1
]}

Zhang Xu ^{[1
]}

机构：

[1] Institute of Energy and Power Engineering, Zhejiang University of Technology

[2] State Key laboratory of Clean Energy Utilization, Zhejiang University

来源：

Journal of Environmental Sciences | 2014年 / 11期

基金：

国家高技术研究发展计划(863计划);

关键词：

Inhibition; PCDD/Fs; Ammonium sulfate; Urea; Chlorine emission;

D O I：

暂无

中图分类号：

X701 [废气的处理与利用];

学科分类号：

083002 ;

摘要：

The effect of ammonium sulfate((NH4)2SO4) and urea(CO(NH2)2) on polychlorinated dibenzo-p-dioxin and dibenzofuran(PCDD/F) formation from active carbon was investigated in this study. Both additives could significantly inhibit PCDD/F formation, and PCDD/F(TEQ)generation was reduced to 98.5%(98%) or 64.5%(77.2%) after 5%(NH4)2SO4or CO(NH2)2was added into model ash, respectively. The inhibition efficiency of PCDDs was higher than the value of PCDFs, however, the reduction of PCDD/F yield was mainly from PCDFs decreasing. In addition, the solid-phase products were reduced more than the gas-phase compounds by inhibitors. By the measurement of chlorine emission in the phase of ion(Cl[Cl-]) and molecule gas(Cl[Cl2]), it was observed that both Cl[Cl-] and Cl[Cl2] were reduced after inhibitors were added into ash. Cl[Cl2] was reduced to 51.0% by urea addition, which was supposed as one possible mechanism of PCDD/F inhibition.

引用

页码：2277 / 2282

页数：6

共 37 条

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