Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery

In this study, the effect of NaOH on the synthesis of mesoporous silica (MS) by using municipal solid-waste incinerator (MSWI) ash slag was investigated. Moreover, the prepared MS was used as a support to evaluate its potential for the recovery of gold ions (Au(III)) from aqueous solution. The extra...

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Auteurs principaux:	Yosep Han, Seongsoo Han, Seongmin Kim, Minuk Jung, Ho-Seok Jeon, Siyoung Q. Choi, KyuHan Kim, Youngjae Kim
Format:	article
Langue:	EN
Publié:	MDPI AG 2021
Sujets:	MSWI ash slag mesoporous silica NaOH concentration surface silanol gold recovery Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Accès en ligne:	https://doaj.org/article/f0046bba9639412ebebee55d06225ae8
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spelling	oai:doaj.org-article:f0046bba9639412ebebee55d06225ae82021-11-25T18:14:31ZMesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery10.3390/ma142268941996-1944https://doaj.org/article/f0046bba9639412ebebee55d06225ae82021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6894https://doaj.org/toc/1996-1944In this study, the effect of NaOH on the synthesis of mesoporous silica (MS) by using municipal solid-waste incinerator (MSWI) ash slag was investigated. Moreover, the prepared MS was used as a support to evaluate its potential for the recovery of gold ions (Au(III)) from aqueous solution. The extraction process for the MSWI ash slag activated through mechanical grinding entailed alkali treatment, using varying concentrations of NaOH. The content of Si extracted from MSWI ash slag increased with the increasing grinding time and NaOH concentration. As the NaOH concentration increased, the pore structure (e.g., Brunauer–Emmett–Teller (BET) surface area and pore volume) of the synthesized MS improved. In addition, the amount of adsorbed Au(III) increased with increasing sulfur content immobilized on the support, and the sulfur content was in turn governed by the silanol content of the MS support. The adsorbent prepared by using the MS-3M support exhibited the highest Au(III) adsorption capacity (110.3 mg/g), and its adsorption–desorption efficiency was not significantly affected even after five adsorption–desorption cycles.Yosep HanSeongsoo HanSeongmin KimMinuk JungHo-Seok JeonSiyoung Q. ChoiKyuHan KimYoungjae KimMDPI AGarticleMSWI ash slagmesoporous silicaNaOH concentrationsurface silanolgold recoveryTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6894, p 6894 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	MSWI ash slag mesoporous silica NaOH concentration surface silanol gold recovery Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	MSWI ash slag mesoporous silica NaOH concentration surface silanol gold recovery Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Yosep Han Seongsoo Han Seongmin Kim Minuk Jung Ho-Seok Jeon Siyoung Q. Choi KyuHan Kim Youngjae Kim Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery
description	In this study, the effect of NaOH on the synthesis of mesoporous silica (MS) by using municipal solid-waste incinerator (MSWI) ash slag was investigated. Moreover, the prepared MS was used as a support to evaluate its potential for the recovery of gold ions (Au(III)) from aqueous solution. The extraction process for the MSWI ash slag activated through mechanical grinding entailed alkali treatment, using varying concentrations of NaOH. The content of Si extracted from MSWI ash slag increased with the increasing grinding time and NaOH concentration. As the NaOH concentration increased, the pore structure (e.g., Brunauer–Emmett–Teller (BET) surface area and pore volume) of the synthesized MS improved. In addition, the amount of adsorbed Au(III) increased with increasing sulfur content immobilized on the support, and the sulfur content was in turn governed by the silanol content of the MS support. The adsorbent prepared by using the MS-3M support exhibited the highest Au(III) adsorption capacity (110.3 mg/g), and its adsorption–desorption efficiency was not significantly affected even after five adsorption–desorption cycles.
format	article
author	Yosep Han Seongsoo Han Seongmin Kim Minuk Jung Ho-Seok Jeon Siyoung Q. Choi KyuHan Kim Youngjae Kim
author_facet	Yosep Han Seongsoo Han Seongmin Kim Minuk Jung Ho-Seok Jeon Siyoung Q. Choi KyuHan Kim Youngjae Kim
author_sort	Yosep Han
title	Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery
title_short	Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery
title_full	Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery
title_fullStr	Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery
title_full_unstemmed	Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery
title_sort	mesoporous silica derived from municipal solid waste incinerator (mswi) ash slag: synthesis, characterization and use as supports for au(iii) recovery
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f0046bba9639412ebebee55d06225ae8
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Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery

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