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Effect of Ammonium Salt on the Adsorption Behavior and Surface Characteristics of Sub-Bituminous Coal and Silica

[Image: see text] Ammonium salt is a common collector in coal reverse flotation. This study compared the difference of adsorption behavior on ammonium salt Lilaflot D817M between sub-bituminous coal and silica as well as the surface characteristic change after being processed by ammonium salt. The r...

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Autores principales: Li, Yonggai, Nie, Qingmin, Chen, Jianzhong, Shen, Lijuan, Li, Jiawei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648452/
https://www.ncbi.nlm.nih.gov/pubmed/31460141
http://dx.doi.org/10.1021/acsomega.9b00466
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author Li, Yonggai
Nie, Qingmin
Chen, Jianzhong
Shen, Lijuan
Li, Jiawei
author_facet Li, Yonggai
Nie, Qingmin
Chen, Jianzhong
Shen, Lijuan
Li, Jiawei
author_sort Li, Yonggai
collection PubMed
description [Image: see text] Ammonium salt is a common collector in coal reverse flotation. This study compared the difference of adsorption behavior on ammonium salt Lilaflot D817M between sub-bituminous coal and silica as well as the surface characteristic change after being processed by ammonium salt. The results indicate that the adsorption capacity of sub-bituminous coal is always higher than that of silica under different experimental conditions, such as different initial concentrations of ammonium salt, different adsorption times, different concentrations of the depressant dextrin, and different pH values. Ammonium salt could increase the isoelectric point of both silica and sub-bituminous coal greatly. However, the hydrophobicity of silica enhances much more significantly than that of sub-bituminous coal after being treated by Lilaflot D817M. This indicates that the surface wettability change degrees of sub-bituminous coal and silica after being treated by ammonium salt are not proportional to the adsorption capacity because of their different surface structures. The reverse flotation test result shows that 2 kg/t Lilaflot D817M dosage could help obtain relatively good flotation indexes.
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spelling pubmed-66484522019-08-27 Effect of Ammonium Salt on the Adsorption Behavior and Surface Characteristics of Sub-Bituminous Coal and Silica Li, Yonggai Nie, Qingmin Chen, Jianzhong Shen, Lijuan Li, Jiawei ACS Omega [Image: see text] Ammonium salt is a common collector in coal reverse flotation. This study compared the difference of adsorption behavior on ammonium salt Lilaflot D817M between sub-bituminous coal and silica as well as the surface characteristic change after being processed by ammonium salt. The results indicate that the adsorption capacity of sub-bituminous coal is always higher than that of silica under different experimental conditions, such as different initial concentrations of ammonium salt, different adsorption times, different concentrations of the depressant dextrin, and different pH values. Ammonium salt could increase the isoelectric point of both silica and sub-bituminous coal greatly. However, the hydrophobicity of silica enhances much more significantly than that of sub-bituminous coal after being treated by Lilaflot D817M. This indicates that the surface wettability change degrees of sub-bituminous coal and silica after being treated by ammonium salt are not proportional to the adsorption capacity because of their different surface structures. The reverse flotation test result shows that 2 kg/t Lilaflot D817M dosage could help obtain relatively good flotation indexes. American Chemical Society 2019-06-17 /pmc/articles/PMC6648452/ /pubmed/31460141 http://dx.doi.org/10.1021/acsomega.9b00466 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Li, Yonggai
Nie, Qingmin
Chen, Jianzhong
Shen, Lijuan
Li, Jiawei
Effect of Ammonium Salt on the Adsorption Behavior and Surface Characteristics of Sub-Bituminous Coal and Silica
title Effect of Ammonium Salt on the Adsorption Behavior and Surface Characteristics of Sub-Bituminous Coal and Silica
title_full Effect of Ammonium Salt on the Adsorption Behavior and Surface Characteristics of Sub-Bituminous Coal and Silica
title_fullStr Effect of Ammonium Salt on the Adsorption Behavior and Surface Characteristics of Sub-Bituminous Coal and Silica
title_full_unstemmed Effect of Ammonium Salt on the Adsorption Behavior and Surface Characteristics of Sub-Bituminous Coal and Silica
title_short Effect of Ammonium Salt on the Adsorption Behavior and Surface Characteristics of Sub-Bituminous Coal and Silica
title_sort effect of ammonium salt on the adsorption behavior and surface characteristics of sub-bituminous coal and silica
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648452/
https://www.ncbi.nlm.nih.gov/pubmed/31460141
http://dx.doi.org/10.1021/acsomega.9b00466
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