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Fly Ash, from Recycling to Potential Raw Material for Mesoporous Silica Synthesis

In order to meet the increasing energy demand and to decrease the dependency on coal, environmentally friendly methods for fly ash utilization are required. In this respect, the priority is to identify the fly ash properties and to consider its potential as raw material in the obtaining of high-valu...

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Autores principales: Miricioiu, Marius Gheorghe, Niculescu, Violeta-Carolina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7153244/
https://www.ncbi.nlm.nih.gov/pubmed/32151006
http://dx.doi.org/10.3390/nano10030474
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author Miricioiu, Marius Gheorghe
Niculescu, Violeta-Carolina
author_facet Miricioiu, Marius Gheorghe
Niculescu, Violeta-Carolina
author_sort Miricioiu, Marius Gheorghe
collection PubMed
description In order to meet the increasing energy demand and to decrease the dependency on coal, environmentally friendly methods for fly ash utilization are required. In this respect, the priority is to identify the fly ash properties and to consider its potential as raw material in the obtaining of high-value materials. The physico-chemical and structural characteristics of the fly ash coming from various worldwide power plants are briefly presented. The fly ash was sampled from power plants where the combustion of lignite and hard coal in pulverized-fuel boilers (PC) and circulating fluidized bed (CFB) boilers was applied. The fly ash has high silica content. Due to this, the fly ash can be considered a potential raw material for the synthesis of nanoporous materials, such as zeolites or mesoporous silica. The samples with the highest content of SiO(2) can be used to obtain mesoporous silica materials, such as MCM-41 or SBA-15. The resulting mesoporous silica can be used for removing/capture of CO(2) from emissions or for wastewater treatment. The synthesis of various porous materials using wastes would allow a high level of recycling for a sustainable society with low environmental impact.
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spelling pubmed-71532442020-04-20 Fly Ash, from Recycling to Potential Raw Material for Mesoporous Silica Synthesis Miricioiu, Marius Gheorghe Niculescu, Violeta-Carolina Nanomaterials (Basel) Review In order to meet the increasing energy demand and to decrease the dependency on coal, environmentally friendly methods for fly ash utilization are required. In this respect, the priority is to identify the fly ash properties and to consider its potential as raw material in the obtaining of high-value materials. The physico-chemical and structural characteristics of the fly ash coming from various worldwide power plants are briefly presented. The fly ash was sampled from power plants where the combustion of lignite and hard coal in pulverized-fuel boilers (PC) and circulating fluidized bed (CFB) boilers was applied. The fly ash has high silica content. Due to this, the fly ash can be considered a potential raw material for the synthesis of nanoporous materials, such as zeolites or mesoporous silica. The samples with the highest content of SiO(2) can be used to obtain mesoporous silica materials, such as MCM-41 or SBA-15. The resulting mesoporous silica can be used for removing/capture of CO(2) from emissions or for wastewater treatment. The synthesis of various porous materials using wastes would allow a high level of recycling for a sustainable society with low environmental impact. MDPI 2020-03-05 /pmc/articles/PMC7153244/ /pubmed/32151006 http://dx.doi.org/10.3390/nano10030474 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Miricioiu, Marius Gheorghe
Niculescu, Violeta-Carolina
Fly Ash, from Recycling to Potential Raw Material for Mesoporous Silica Synthesis
title Fly Ash, from Recycling to Potential Raw Material for Mesoporous Silica Synthesis
title_full Fly Ash, from Recycling to Potential Raw Material for Mesoporous Silica Synthesis
title_fullStr Fly Ash, from Recycling to Potential Raw Material for Mesoporous Silica Synthesis
title_full_unstemmed Fly Ash, from Recycling to Potential Raw Material for Mesoporous Silica Synthesis
title_short Fly Ash, from Recycling to Potential Raw Material for Mesoporous Silica Synthesis
title_sort fly ash, from recycling to potential raw material for mesoporous silica synthesis
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7153244/
https://www.ncbi.nlm.nih.gov/pubmed/32151006
http://dx.doi.org/10.3390/nano10030474
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