Properties on NO removal over pyrolyzed sludge carbon

YIN Andong; DENG Wenyi; MA Jingchen; SU Yaxin

doi:10.11949/j.issn.0438-1157.20171293

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Properties on NO removal over pyrolyzed sludge carbon

更新时间：2025-12-10

- Properties on NO removal over pyrolyzed sludge carbon
- CIESC Journal Issue 6, Pages: 2655-2663(2018)
- 作者机构：
  
  东华大学环境科学与工程学院,上海,201620
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171293
  CLC： K6
- Online First：05 June 2018，
  
  Published：05 June 2018
- 稿件说明：
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YIN Andong, DENG Wenyi, MA Jingchen, et al. Properties on NO removal over pyrolyzed sludge carbon[J]. CIESC Journal, 2018, (6): 2655-2663.
DOI：

YIN Andong, DENG Wenyi, MA Jingchen, et al. Properties on NO removal over pyrolyzed sludge carbon[J]. CIESC Journal, 2018, (6): 2655-2663. DOI： 10.11949/j.issn.0438-1157.20171293.

摘要

以废水污泥热解产生的污泥热解炭为原料，通过酸洗、活化、负载Fe、H2还原等方式考察不同污泥热解炭样品对脱硝性能的影响。结果表明，污泥原样中的Fe2P、FeS等低价态的铁具有良好的脱硝性能，450～500℃时最大脱硝效率达到81%。经过HNO3酸洗和KOH活化后的污泥热解炭，因为去除了Fe2P、FeS等低价态的铁，脱硝效率大幅下降，在450～500℃的最大效率分别仅为30%和53%。而热解污泥负载样中的Fe主要以Fe2O3形式存在，其最大脱硝效率在450～500℃时只有50%。经过H2还原后，负载样中的Fe2O3被还原为Fe2P、FeS等低价态的铁，其最大脱硝效率在450～500℃时上升至94%。

Abstract

In this study

sewage sludge was pyrolyzed and treated by acid-washing

KOH activation

Fe impregnation and H2 reduction for NO removal. The results showed that the original samples containing Fe2P and FeS had remarkable performance for NO conversion. At 450-500℃

the maximum NO conversion over the original samples was about 81%. However

NO conversion over acid-washed and KOH activated samples decreased dramatically due to removal of Fe2P and FeS

and the maximum NO conversion at 450-500℃ was only about 30% and 53%

respectively. However

the maximum NO conversion over pyrolyzed sludge carbon impregnated with Fe was only 50% at 450-500℃. The reason was that Fe in the impregnated sample was mainly existed in the form of Fe2O3. After H2 reduction

Fe2O3 was reduced to Fe2P and FeS

and the maximum NO conversion was also greatly enhanced to 94% at 450-500℃.

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