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Investigation on Mercury Reemission from Limestone-Gypsum Wet Flue Gas Desulfurization Slurry

Secondary atmospheric pollutions may result from wet flue gas desulfurization (WFGD) systems caused by the reduction of Hg(2+) to Hg(0) and lead to a damping of the cobenefit mercury removal efficiency by WFGD systems. The experiment on Hg(0) reemission from limestone-gypsum WFGD slurry was carried...

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Autores principales: Chen, Chuanmin, Liu, Songtao, Gao, Yang, Liu, Yongchao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3967394/
https://www.ncbi.nlm.nih.gov/pubmed/24737981
http://dx.doi.org/10.1155/2014/581724
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author Chen, Chuanmin
Liu, Songtao
Gao, Yang
Liu, Yongchao
author_facet Chen, Chuanmin
Liu, Songtao
Gao, Yang
Liu, Yongchao
author_sort Chen, Chuanmin
collection PubMed
description Secondary atmospheric pollutions may result from wet flue gas desulfurization (WFGD) systems caused by the reduction of Hg(2+) to Hg(0) and lead to a damping of the cobenefit mercury removal efficiency by WFGD systems. The experiment on Hg(0) reemission from limestone-gypsum WFGD slurry was carried out by changing the operating conditions such as the pH, temperature, Cl(−) concentrations, and oxygen concentrations. The partitioning behavior of mercury in the solid and liquid byproducts was also discussed. The experimental results indicated that the Hg(0) reemission rate from WFGD slurry increased as the operational temperatures and pH values increased. The Hg(0) reemission rates decreased as the O(2) concentration of flue gas and Cl(−) concentration of WFGD slurry increased. The concentrations of O(2) in flue gas have an evident effect on the mercury retention in the solid byproducts. The temperature and Cl(−) concentration have a slight effect on the mercury partitioning in the byproducts. No evident relation was found between mercury retention in the solid byproducts and the pH. The present findings could be valuable for industrial application of characterizing and optimizing mercury control in wet FGD systems.
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spelling pubmed-39673942014-04-15 Investigation on Mercury Reemission from Limestone-Gypsum Wet Flue Gas Desulfurization Slurry Chen, Chuanmin Liu, Songtao Gao, Yang Liu, Yongchao ScientificWorldJournal Research Article Secondary atmospheric pollutions may result from wet flue gas desulfurization (WFGD) systems caused by the reduction of Hg(2+) to Hg(0) and lead to a damping of the cobenefit mercury removal efficiency by WFGD systems. The experiment on Hg(0) reemission from limestone-gypsum WFGD slurry was carried out by changing the operating conditions such as the pH, temperature, Cl(−) concentrations, and oxygen concentrations. The partitioning behavior of mercury in the solid and liquid byproducts was also discussed. The experimental results indicated that the Hg(0) reemission rate from WFGD slurry increased as the operational temperatures and pH values increased. The Hg(0) reemission rates decreased as the O(2) concentration of flue gas and Cl(−) concentration of WFGD slurry increased. The concentrations of O(2) in flue gas have an evident effect on the mercury retention in the solid byproducts. The temperature and Cl(−) concentration have a slight effect on the mercury partitioning in the byproducts. No evident relation was found between mercury retention in the solid byproducts and the pH. The present findings could be valuable for industrial application of characterizing and optimizing mercury control in wet FGD systems. Hindawi Publishing Corporation 2014-03-04 /pmc/articles/PMC3967394/ /pubmed/24737981 http://dx.doi.org/10.1155/2014/581724 Text en Copyright © 2014 Chuanmin Chen 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
Chen, Chuanmin
Liu, Songtao
Gao, Yang
Liu, Yongchao
Investigation on Mercury Reemission from Limestone-Gypsum Wet Flue Gas Desulfurization Slurry
title Investigation on Mercury Reemission from Limestone-Gypsum Wet Flue Gas Desulfurization Slurry
title_full Investigation on Mercury Reemission from Limestone-Gypsum Wet Flue Gas Desulfurization Slurry
title_fullStr Investigation on Mercury Reemission from Limestone-Gypsum Wet Flue Gas Desulfurization Slurry
title_full_unstemmed Investigation on Mercury Reemission from Limestone-Gypsum Wet Flue Gas Desulfurization Slurry
title_short Investigation on Mercury Reemission from Limestone-Gypsum Wet Flue Gas Desulfurization Slurry
title_sort investigation on mercury reemission from limestone-gypsum wet flue gas desulfurization slurry
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3967394/
https://www.ncbi.nlm.nih.gov/pubmed/24737981
http://dx.doi.org/10.1155/2014/581724
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