NickelMaghrebV1, Main, Exploration, bibRecord, 000198

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

Identifieur interne : 000198 ( Main/Exploration ); précédent : 000197; suivant : 000199

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

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

Source :

Waste management & research [ 0734-242X ] ; 2013.

RBID : Pascal:14-0038687

Descripteurs français

Pascal (Inist)
- Mâchefer, Déchet hospitalier, Usine incinération, Incinération, Contamination, Pollution, Santé publique, Propriété chimique, Cendre, Hôpital, Distribution dimension particule, Composition chimique, Métal lourd, Lixiviation, Analyse chimique, Triage, Surveillance, Extrait, Gestion déchet.
Wicri :
- topic : Déchet hospitalier, Pollution, Santé publique, Métal lourd.

English descriptors

KwdEn :
- Ash, Chemical analysis, Chemical composition, Chemical properties, Cinders, Contamination, Extract, Heavy metal, Hospital, Hospital waste, Incineration, Incineration plant, Lixiviation, Particle size distribution, Pollution, Public health, Sorting, Surveillance, Waste management.

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.

Affiliations:

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Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ash</term>
<term>Chemical analysis</term>
<term>Chemical composition</term>
<term>Chemical properties</term>
<term>Cinders</term>
<term>Contamination</term>
<term>Extract</term>
<term>Heavy metal</term>
<term>Hospital</term>
<term>Hospital waste</term>
<term>Incineration</term>
<term>Incineration plant</term>
<term>Lixiviation</term>
<term>Particle size distribution</term>
<term>Pollution</term>
<term>Public health</term>
<term>Sorting</term>
<term>Surveillance</term>
<term>Waste management</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Mâchefer</term>
<term>Déchet hospitalier</term>
<term>Usine incinération</term>
<term>Incinération</term>
<term>Contamination</term>
<term>Pollution</term>
<term>Santé publique</term>
<term>Propriété chimique</term>
<term>Cendre</term>
<term>Hôpital</term>
<term>Distribution dimension particule</term>
<term>Composition chimique</term>
<term>Métal lourd</term>
<term>Lixiviation</term>
<term>Analyse chimique</term>
<term>Triage</term>
<term>Surveillance</term>
<term>Extrait</term>
<term>Gestion déchet</term>
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<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Déchet hospitalier</term>
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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 P<sub>2</sub>
O<sub>5</sub>
 (18%), SiO<sub>2</sub>
 (17%), Na<sub>2</sub>
O (16%), CaO (14%) and SO<sub>3</sub>
 (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>
</front>
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<affiliations><list><country><li>Maroc</li>
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<name sortKey="El Bakkali, Meriem" sort="El Bakkali, Meriem" uniqKey="El Bakkali M" first="Meriem" last="El Bakkali">Meriem El Bakkali</name>
<name sortKey="El Mzibri, Mohammed" sort="El Mzibri, Mohammed" uniqKey="El Mzibri M" first="Mohammed" last="El Mzibri">Mohammed El Mzibri</name>
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<name sortKey="Jaddi, Hassan" sort="Jaddi, Hassan" uniqKey="Jaddi H" first="Hassan" last="Jaddi">Hassan Jaddi</name>
<name sortKey="Laglaoui, Amin" sort="Laglaoui, Amin" uniqKey="Laglaoui A" first="Amin" last="Laglaoui">Amin Laglaoui</name>
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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