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Characteristics of slag produced from incinerated hospital waste

Ash produced from a hospital waste incinerator was treated using a high temperature melting process at 1200°C. The quality of the produced slag was characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), leaching tests and sequential chemical extraction of metals. The slag contained larg...

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Main Authors: Idris, Azni, Saed, Katayon
Format: Article
Language:English
Published: Elsevier Science B.V. 2002
Online Access:http://psasir.upm.edu.my/id/eprint/114864/1/114864.pdf
http://psasir.upm.edu.my/id/eprint/114864/
https://linkinghub.elsevier.com/retrieve/pii/S0304389402000109
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spelling my.upm.eprints.1148642025-03-05T03:20:02Z http://psasir.upm.edu.my/id/eprint/114864/ Characteristics of slag produced from incinerated hospital waste Idris, Azni Saed, Katayon Ash produced from a hospital waste incinerator was treated using a high temperature melting process at 1200°C. The quality of the produced slag was characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), leaching tests and sequential chemical extraction of metals. The slag contained large amounts of SiO2, CaO, Al2O3, Sn, Ni, Cu, Ba and B. XRD analysis revealed a moderate crystal structure for the melted slag and identified the main crystals as quartz (SiO2), kaolinite (Al2Si2O5(OH)4), albite (NaAlSi3O8) and gibbsite (Al(OH)3). The observed crystal structure assists in preventing the leaching of heavy metals from the slag. Furthermore, the leaching results found the produced slag to comply with disposal limits set by the US EPA. Results from sequential chemical extraction analysis showed that metals in the slag exhibited the strongest preference to be bound to the residual fraction (stable fraction), which is known to have very low leaching characteristics. Melting was found to stabilize heavy metals in hospital waste successfully and therefore it can be an acceptable method for disposal. Elsevier Science B.V. 2002 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/114864/1/114864.pdf Idris, Azni and Saed, Katayon (2002) Characteristics of slag produced from incinerated hospital waste. Journal of Hazardous Materials, 93 (2). pp. 201-208. ISSN 0304-3894; eISSN: 0304-3894 https://linkinghub.elsevier.com/retrieve/pii/S0304389402000109 10.1016/S0304-3894(02)00010-9
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Ash produced from a hospital waste incinerator was treated using a high temperature melting process at 1200°C. The quality of the produced slag was characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), leaching tests and sequential chemical extraction of metals. The slag contained large amounts of SiO2, CaO, Al2O3, Sn, Ni, Cu, Ba and B. XRD analysis revealed a moderate crystal structure for the melted slag and identified the main crystals as quartz (SiO2), kaolinite (Al2Si2O5(OH)4), albite (NaAlSi3O8) and gibbsite (Al(OH)3). The observed crystal structure assists in preventing the leaching of heavy metals from the slag. Furthermore, the leaching results found the produced slag to comply with disposal limits set by the US EPA. Results from sequential chemical extraction analysis showed that metals in the slag exhibited the strongest preference to be bound to the residual fraction (stable fraction), which is known to have very low leaching characteristics. Melting was found to stabilize heavy metals in hospital waste successfully and therefore it can be an acceptable method for disposal.
format Article
author Idris, Azni
Saed, Katayon
spellingShingle Idris, Azni
Saed, Katayon
Characteristics of slag produced from incinerated hospital waste
author_facet Idris, Azni
Saed, Katayon
author_sort Idris, Azni
title Characteristics of slag produced from incinerated hospital waste
title_short Characteristics of slag produced from incinerated hospital waste
title_full Characteristics of slag produced from incinerated hospital waste
title_fullStr Characteristics of slag produced from incinerated hospital waste
title_full_unstemmed Characteristics of slag produced from incinerated hospital waste
title_sort characteristics of slag produced from incinerated hospital waste
publisher Elsevier Science B.V.
publishDate 2002
url http://psasir.upm.edu.my/id/eprint/114864/1/114864.pdf
http://psasir.upm.edu.my/id/eprint/114864/
https://linkinghub.elsevier.com/retrieve/pii/S0304389402000109
_version_ 1825810718707941376
score 13.244413

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