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Characteristics and Stability of Mercury Vapor Adsorption over Two Kinds of Modified Semicoke
In an attempt to produce effective and lower price gaseous Hg(0) adsorbents, two methods of HCl and KMnO(4)/heat treatment were used respectively for the surface modification of liginite semicoke from inner Mongolia. The different effects of modification process on the surface physical and chemical...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4181944/ https://www.ncbi.nlm.nih.gov/pubmed/25309948 http://dx.doi.org/10.1155/2014/260141 |
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author | Huawei, Zhang Xiuli, Liu Li, Wang Peng, Liang |
author_facet | Huawei, Zhang Xiuli, Liu Li, Wang Peng, Liang |
author_sort | Huawei, Zhang |
collection | PubMed |
description | In an attempt to produce effective and lower price gaseous Hg(0) adsorbents, two methods of HCl and KMnO(4)/heat treatment were used respectively for the surface modification of liginite semicoke from inner Mongolia. The different effects of modification process on the surface physical and chemical properties were analyzed. The characteristics and stability of mercury vapor adsorption over two kinds of modified semicoke were investigated. The results indicated that modification process caused lower micropore quantity and volume capacity of semicoke; the C-Cl functional groups, C=O bond and delocalized electron π on the surface of Cl-SC, the amorphous higher valency Mn(x+), and O=C–OH functional groups on the surface of Mn-H-SC were the active sites for oxidation and adsorption of gaseous Hg(0). Modification process led to higher mercury removal efficiency of semicoke at 140°C and reduced the stability of adsorbed mercury of semicoke in simulated water circumstance simultaneously. |
format | Online Article Text |
id | pubmed-4181944 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-41819442014-10-12 Characteristics and Stability of Mercury Vapor Adsorption over Two Kinds of Modified Semicoke Huawei, Zhang Xiuli, Liu Li, Wang Peng, Liang ScientificWorldJournal Research Article In an attempt to produce effective and lower price gaseous Hg(0) adsorbents, two methods of HCl and KMnO(4)/heat treatment were used respectively for the surface modification of liginite semicoke from inner Mongolia. The different effects of modification process on the surface physical and chemical properties were analyzed. The characteristics and stability of mercury vapor adsorption over two kinds of modified semicoke were investigated. The results indicated that modification process caused lower micropore quantity and volume capacity of semicoke; the C-Cl functional groups, C=O bond and delocalized electron π on the surface of Cl-SC, the amorphous higher valency Mn(x+), and O=C–OH functional groups on the surface of Mn-H-SC were the active sites for oxidation and adsorption of gaseous Hg(0). Modification process led to higher mercury removal efficiency of semicoke at 140°C and reduced the stability of adsorbed mercury of semicoke in simulated water circumstance simultaneously. Hindawi Publishing Corporation 2014 2014-08-27 /pmc/articles/PMC4181944/ /pubmed/25309948 http://dx.doi.org/10.1155/2014/260141 Text en Copyright © 2014 Zhang Huawei et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Huawei, Zhang Xiuli, Liu Li, Wang Peng, Liang Characteristics and Stability of Mercury Vapor Adsorption over Two Kinds of Modified Semicoke |
title | Characteristics and Stability of Mercury Vapor Adsorption over Two Kinds of Modified Semicoke |
title_full | Characteristics and Stability of Mercury Vapor Adsorption over Two Kinds of Modified Semicoke |
title_fullStr | Characteristics and Stability of Mercury Vapor Adsorption over Two Kinds of Modified Semicoke |
title_full_unstemmed | Characteristics and Stability of Mercury Vapor Adsorption over Two Kinds of Modified Semicoke |
title_short | Characteristics and Stability of Mercury Vapor Adsorption over Two Kinds of Modified Semicoke |
title_sort | characteristics and stability of mercury vapor adsorption over two kinds of modified semicoke |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4181944/ https://www.ncbi.nlm.nih.gov/pubmed/25309948 http://dx.doi.org/10.1155/2014/260141 |
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