Properties of fly ashes from thermal power stations in relation to use as soil amendments

Recycling fly ashes is a good alternative to disposal with the significant economic and environmental benefits. Characterization of fly ashes can be helpful to evaluate their use potentials. This study aimed to investigate the physical, chemical and mineralogical properties of fly ashes from five th...

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Main Authors:	Thien, Le Van, Chau, Ngo Thi Tuong, Hong, Le Thi Tham, Trang, Nguyen Thu, Futamata, Hiroyuki
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2019
Online Access:	http://journalarticle.ukm.my/13377/ http://journalarticle.ukm.my/13377/ http://journalarticle.ukm.my/13377/1/06%20Le%20Van%20Thien.pdf

id	ukm-13377
recordtype	eprints
spelling	ukm-133772019-09-19T22:06:21Z http://journalarticle.ukm.my/13377/ Properties of fly ashes from thermal power stations in relation to use as soil amendments Thien, Le Van Chau, Ngo Thi Tuong Hong, Le Thi Tham Trang, Nguyen Thu Futamata, Hiroyuki Recycling fly ashes is a good alternative to disposal with the significant economic and environmental benefits. Characterization of fly ashes can be helpful to evaluate their use potentials. This study aimed to investigate the physical, chemical and mineralogical properties of fly ashes from five thermal power stations in Northern Vietnam in relation to use as sandy soil amendments. The results showed that the fly ashes were dominated by silt-sized and spherical particles and had low bulk densities. There was almost not significant difference in the surface charges among the fly ashes; however, their surface areas varied widely. The fly ashes were alkaline. The electrical conductivity and cation exchange capacity in the fly ashes were higher than those in the sandy soil. The concentrations of extractable K, P, Ca2+ and Mg2+ in the fly ashes were higher compared with the sandy soil. The major matrix elements in the fly ashes were Si, Al, and Fe together with significant percentages of K, Mg, Ca and Ti. Quartz was the most predominant mineral present in the fly ashes. Several radioactive elements were found in the fly ashes with very low concentrations. The potential to release trace elements from the fly ashes was below the regulatory guidelines. The amendment of fly ashes to the sandy soil led to the substantial decrease in the hydraulic conductivity but the increase in the plant-available water contents of the sandy soil. It is recommended to use the fly ashes as soil amendments for sandy soil amelioration. Penerbit Universiti Kebangsaan Malaysia 2019-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/13377/1/06%20Le%20Van%20Thien.pdf Thien, Le Van and Chau, Ngo Thi Tuong and Hong, Le Thi Tham and Trang, Nguyen Thu and Futamata, Hiroyuki (2019) Properties of fly ashes from thermal power stations in relation to use as soil amendments. Sains Malaysiana, 48 (4). pp. 745-755. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid48bil4_2019/KandunganJilid48Bil4_2019.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Recycling fly ashes is a good alternative to disposal with the significant economic and environmental benefits. Characterization of fly ashes can be helpful to evaluate their use potentials. This study aimed to investigate the physical, chemical and mineralogical properties of fly ashes from five thermal power stations in Northern Vietnam in relation to use as sandy soil amendments. The results showed that the fly ashes were dominated by silt-sized and spherical particles and had low bulk densities. There was almost not significant difference in the surface charges among the fly ashes; however, their surface areas varied widely. The fly ashes were alkaline. The electrical conductivity and cation exchange capacity in the fly ashes were higher than those in the sandy soil. The concentrations of extractable K, P, Ca2+ and Mg2+ in the fly ashes were higher compared with the sandy soil. The major matrix elements in the fly ashes were Si, Al, and Fe together with significant percentages of K, Mg, Ca and Ti. Quartz was the most predominant mineral present in the fly ashes. Several radioactive elements were found in the fly ashes with very low concentrations. The potential to release trace elements from the fly ashes was below the regulatory guidelines. The amendment of fly ashes to the sandy soil led to the substantial decrease in the hydraulic conductivity but the increase in the plant-available water contents of the sandy soil. It is recommended to use the fly ashes as soil amendments for sandy soil amelioration.
format	Article
author	Thien, Le Van Chau, Ngo Thi Tuong Hong, Le Thi Tham Trang, Nguyen Thu Futamata, Hiroyuki
spellingShingle	Thien, Le Van Chau, Ngo Thi Tuong Hong, Le Thi Tham Trang, Nguyen Thu Futamata, Hiroyuki Properties of fly ashes from thermal power stations in relation to use as soil amendments
author_facet	Thien, Le Van Chau, Ngo Thi Tuong Hong, Le Thi Tham Trang, Nguyen Thu Futamata, Hiroyuki
author_sort	Thien, Le Van
title	Properties of fly ashes from thermal power stations in relation to use as soil amendments
title_short	Properties of fly ashes from thermal power stations in relation to use as soil amendments
title_full	Properties of fly ashes from thermal power stations in relation to use as soil amendments
title_fullStr	Properties of fly ashes from thermal power stations in relation to use as soil amendments
title_full_unstemmed	Properties of fly ashes from thermal power stations in relation to use as soil amendments
title_sort	properties of fly ashes from thermal power stations in relation to use as soil amendments
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2019
url	http://journalarticle.ukm.my/13377/ http://journalarticle.ukm.my/13377/ http://journalarticle.ukm.my/13377/1/06%20Le%20Van%20Thien.pdf
first_indexed	2023-09-18T20:04:43Z
last_indexed	2023-09-18T20:04:43Z
_version_	1777407081689645056

Properties of fly ashes from thermal power stations in relation to use as soil amendments

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