NickelMaghrebV1, Main, Exploration, bibRecord, 000133

Characterization of bottom ash from two hospital waste incinerators in Rabat, Morocco.

Identifieur interne : 000133 ( Main/Exploration ); précédent : 000132; suivant : 000134

Characterization of bottom ash from two hospital waste incinerators in Rabat, Morocco.

Auteurs : Meriem E L. Bakkali [Maroc] ; Meriem Bahri ; Said Gmouh ; Hassan Jaddi ; Mohammed Bakkali ; Amin Laglaoui ; Mohammed E L. Mzibri

Source :

Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA [ 1096-3669 ] ; 2013.

RBID : pubmed:24190918

Descripteurs français

Wicri :
- geographic : Maroc.

English descriptors

KwdEn :
- Coal Ash (chemistry), Environmental Pollutants (analysis), Environmental Pollution (prevention & control), Hospitals, Incineration (instrumentation), Medical Waste, Medical Waste Disposal (methods), Metals, Heavy (analysis), Metals, Heavy (chemistry), Morocco, Particle Size.
MESH :
- chemical , analysis : Environmental Pollutants, Metals, Heavy.
- chemical , chemistry : Coal Ash, Metals, Heavy.
- geographic : Morocco.
- instrumentation : Incineration.
- chemical , methods : Medical Waste Disposal.
- prevention & control : Environmental Pollution.
- Hospitals, Medical Waste, Particle Size.

Abstract

The uncontrolled disposal of bottom ash generated by the incineration units of hazardous and infected wastes in developed countries are the main cause of significant damage, such as contamination of the soil, as well as surface and underground waters, which may put both the environment and public health at risk. In Morocco, little information is available on the chemical properties of the resulting ashes. In this study, 16 hospital waste ash samples were collected from the incinerators of the two main hospitals in Rabat: Ibn Sina and Cheikh Zayd. A series of tests was conducted, including particle size distribution, mineralogical and chemical composition, and heavy metal leaching behaviour. The results showed that the samples were composed mainly of P2O5 (18%), SiO2 (17%), Na2O (16%), CaO (14%) and SO3 (10%). Moreover, chemical analysis clearly demonstrated that medical waste (MW) contains large amounts of waste generated by domestic activities in the hospital, with a lack of sorting system in the monitoring of MW. Furthermore, the ashes contained high concentrations of heavy metals such as zinc, lead, chromium and nickel with a vast range of 0.5-25071 mg/kg. Leaching tests showed that the extracted amounts of all the heavy metals were lower, with concentrations < 2.85 mg/kg. Comparison of the corresponding heavy metal concentrations with the limit values set by the Council Decision 2003/33/EC allowed us to conclude that bottom ashes meet the waste acceptance criteria regarding these heavy metals.

DOI: 10.1177/0734242X13507308
PubMed: 24190918

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">The uncontrolled disposal of bottom ash generated by the incineration units of hazardous and infected wastes in developed countries are the main cause of significant damage, such as contamination of the soil, as well as surface and underground waters, which may put both the environment and public health at risk. In Morocco, little information is available on the chemical properties of the resulting ashes. In this study, 16 hospital waste ash samples were collected from the incinerators of the two main hospitals in Rabat: Ibn Sina and Cheikh Zayd. A series of tests was conducted, including particle size distribution, mineralogical and chemical composition, and heavy metal leaching behaviour. The results showed that the samples were composed mainly of P2O5 (18%), SiO2 (17%), Na2O (16%), CaO (14%) and SO3 (10%). Moreover, chemical analysis clearly demonstrated that medical waste (MW) contains large amounts of waste generated by domestic activities in the hospital, with a lack of sorting system in the monitoring of MW. Furthermore, the ashes contained high concentrations of heavy metals such as zinc, lead, chromium and nickel with a vast range of 0.5-25071 mg/kg. Leaching tests showed that the extracted amounts of all the heavy metals were lower, with concentrations < 2.85 mg/kg. Comparison of the corresponding heavy metal concentrations with the limit values set by the Council Decision 2003/33/EC allowed us to conclude that bottom ashes meet the waste acceptance criteria regarding these heavy metals.</div>
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Serveur d'exploration sur le nickel au Maghreb

Characterization of bottom ash from two hospital waste incinerators in Rabat, Morocco.

Characterization of bottom ash from two hospital waste incinerators in Rabat, Morocco.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

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