Product Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char

The microwave heating system was used for sludge pyrolysis. The raw sludge and KOH-immersed sludge were pyrolyzed and their product characteristics were determined. The research results are advantageous to understand the influence of KOH activation on characteristics of pyrolysis products and the ad...

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Autores principales:	Kuo-Hsiung Lin, Jiun-Horng Tsai, Zhi-Wei Chou, Hung-Lung Chiang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sludge potassium hydroxide (KOH) mesopore precipitation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/7313c29ff4b846258d9dcfb10928cab5
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spelling	oai:doaj.org-article:7313c29ff4b846258d9dcfb10928cab52021-11-11T19:45:21ZProduct Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char10.3390/su1321121252071-1050https://doaj.org/article/7313c29ff4b846258d9dcfb10928cab52021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/12125https://doaj.org/toc/2071-1050The microwave heating system was used for sludge pyrolysis. The raw sludge and KOH-immersed sludge were pyrolyzed and their product characteristics were determined. The research results are advantageous to understand the influence of KOH activation on characteristics of pyrolysis products and the adsorption performance of metals in char. In the case of a high temperature and high KOH dose, most of the lost mass from sludge pyrolysis was converted into gaseous products instead of oil. The heat values of liquid oils were 40.86–41.39 MJ kg<sup>−</sup><sup>1</sup>, which has the potential for use as fuels. The use of a higher KOH dose for sludge pyrolysis is beneficial to the porosity development and generates a mesopore structure. The results from adsorption tests indicate that precipitation could be the dominant adsorption mechanism due to the binding between alkaline anion and carbonate and metal ions with a strong chemical affinity. The high KOH dose sludge adsorbent has a remarkable adsorption performance and can be used as adsorbent for the removal of the studied metals.Kuo-Hsiung LinJiun-Horng TsaiZhi-Wei ChouHung-Lung ChiangMDPI AGarticlesludgepotassium hydroxide (KOH)mesoporeprecipitationEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12125, p 12125 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sludge potassium hydroxide (KOH) mesopore precipitation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	sludge potassium hydroxide (KOH) mesopore precipitation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Kuo-Hsiung Lin Jiun-Horng Tsai Zhi-Wei Chou Hung-Lung Chiang Product Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char
description	The microwave heating system was used for sludge pyrolysis. The raw sludge and KOH-immersed sludge were pyrolyzed and their product characteristics were determined. The research results are advantageous to understand the influence of KOH activation on characteristics of pyrolysis products and the adsorption performance of metals in char. In the case of a high temperature and high KOH dose, most of the lost mass from sludge pyrolysis was converted into gaseous products instead of oil. The heat values of liquid oils were 40.86–41.39 MJ kg<sup>−</sup><sup>1</sup>, which has the potential for use as fuels. The use of a higher KOH dose for sludge pyrolysis is beneficial to the porosity development and generates a mesopore structure. The results from adsorption tests indicate that precipitation could be the dominant adsorption mechanism due to the binding between alkaline anion and carbonate and metal ions with a strong chemical affinity. The high KOH dose sludge adsorbent has a remarkable adsorption performance and can be used as adsorbent for the removal of the studied metals.
format	article
author	Kuo-Hsiung Lin Jiun-Horng Tsai Zhi-Wei Chou Hung-Lung Chiang
author_facet	Kuo-Hsiung Lin Jiun-Horng Tsai Zhi-Wei Chou Hung-Lung Chiang
author_sort	Kuo-Hsiung Lin
title	Product Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char
title_short	Product Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char
title_full	Product Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char
title_fullStr	Product Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char
title_full_unstemmed	Product Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char
title_sort	product characteristics of sludge pyrolysis and adsorption performance of metals by char
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7313c29ff4b846258d9dcfb10928cab5
work_keys_str_mv	AT kuohsiunglin productcharacteristicsofsludgepyrolysisandadsorptionperformanceofmetalsbychar AT jiunhorngtsai productcharacteristicsofsludgepyrolysisandadsorptionperformanceofmetalsbychar AT zhiweichou productcharacteristicsofsludgepyrolysisandadsorptionperformanceofmetalsbychar AT hunglungchiang productcharacteristicsofsludgepyrolysisandadsorptionperformanceofmetalsbychar
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Product Characteristics of Sludge Pyrolysis and Adsorption Performance of Metals by Char

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