Cargando…

Preparation of CSHW with Flue Gas Desulfurization Gypsum

Calcium sulfate hemihydrate whiskers (CSHW), a multi-functional and high value-added building material, were prepared with flue gas desulfurization (FGD) gypsum by hydrothermal method, which could be a reasonable disposal of FGD gypsum. In order to obtain CSHW of a high aspect ratio, a series of man...

Descripción completa

Detalles Bibliográficos
Autores principales: Chen, Xuemei, Gao, Jianming, Wu, Ye, Wu, Qihong, Luo, Li
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000504/
https://www.ncbi.nlm.nih.gov/pubmed/35408025
http://dx.doi.org/10.3390/ma15072691
_version_ 1784685451738611712
author Chen, Xuemei
Gao, Jianming
Wu, Ye
Wu, Qihong
Luo, Li
author_facet Chen, Xuemei
Gao, Jianming
Wu, Ye
Wu, Qihong
Luo, Li
author_sort Chen, Xuemei
collection PubMed
description Calcium sulfate hemihydrate whiskers (CSHW), a multi-functional and high value-added building material, were prepared with flue gas desulfurization (FGD) gypsum by hydrothermal method, which could be a reasonable disposal of FGD gypsum. In order to obtain CSHW of a high aspect ratio, a series of manufacturing parameters such as reaction temperature, stirring speed, material–water ratio, and reaction time were investigated. The effect of stabilizing treatment and glycerol concentration on CSHW morphology were also studied by environmental scanning electron microscopy (ESEM) and statistical analysis. The results showed that the optimum preparing conditions of reaction temperature, stirring speed, water–material ratio, and reaction time were 160 °C, 200~300 rpm, 11:1 and 1 h, respectively. Furthermore, stabilizing treatment with octodecyl betaine was necessary for the preparation of CSHW. The final prepared whiskers had smooth surface, uniform morphology, a diameter of 260 nm, and a corresponding aspect ratio of 208.2. Moreover, the addition of glycerol reduced the activity of water, contributing to a lower reaction temperature and much smaller diameter.
format Online
Article
Text
id pubmed-9000504
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-90005042022-04-12 Preparation of CSHW with Flue Gas Desulfurization Gypsum Chen, Xuemei Gao, Jianming Wu, Ye Wu, Qihong Luo, Li Materials (Basel) Article Calcium sulfate hemihydrate whiskers (CSHW), a multi-functional and high value-added building material, were prepared with flue gas desulfurization (FGD) gypsum by hydrothermal method, which could be a reasonable disposal of FGD gypsum. In order to obtain CSHW of a high aspect ratio, a series of manufacturing parameters such as reaction temperature, stirring speed, material–water ratio, and reaction time were investigated. The effect of stabilizing treatment and glycerol concentration on CSHW morphology were also studied by environmental scanning electron microscopy (ESEM) and statistical analysis. The results showed that the optimum preparing conditions of reaction temperature, stirring speed, water–material ratio, and reaction time were 160 °C, 200~300 rpm, 11:1 and 1 h, respectively. Furthermore, stabilizing treatment with octodecyl betaine was necessary for the preparation of CSHW. The final prepared whiskers had smooth surface, uniform morphology, a diameter of 260 nm, and a corresponding aspect ratio of 208.2. Moreover, the addition of glycerol reduced the activity of water, contributing to a lower reaction temperature and much smaller diameter. MDPI 2022-04-06 /pmc/articles/PMC9000504/ /pubmed/35408025 http://dx.doi.org/10.3390/ma15072691 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Xuemei
Gao, Jianming
Wu, Ye
Wu, Qihong
Luo, Li
Preparation of CSHW with Flue Gas Desulfurization Gypsum
title Preparation of CSHW with Flue Gas Desulfurization Gypsum
title_full Preparation of CSHW with Flue Gas Desulfurization Gypsum
title_fullStr Preparation of CSHW with Flue Gas Desulfurization Gypsum
title_full_unstemmed Preparation of CSHW with Flue Gas Desulfurization Gypsum
title_short Preparation of CSHW with Flue Gas Desulfurization Gypsum
title_sort preparation of cshw with flue gas desulfurization gypsum
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000504/
https://www.ncbi.nlm.nih.gov/pubmed/35408025
http://dx.doi.org/10.3390/ma15072691
work_keys_str_mv AT chenxuemei preparationofcshwwithfluegasdesulfurizationgypsum
AT gaojianming preparationofcshwwithfluegasdesulfurizationgypsum
AT wuye preparationofcshwwithfluegasdesulfurizationgypsum
AT wuqihong preparationofcshwwithfluegasdesulfurizationgypsum
AT luoli preparationofcshwwithfluegasdesulfurizationgypsum