Effet auto-épurateur de la lithologie des affleurements géologiques dans un climat semi-aride: cas du bassin versant de l'Oued Mellègue (Nord-Ouest de la Tunisie)
Identifieur interne : 000327 ( Main/Exploration ); précédent : 000326; suivant : 000328Effet auto-épurateur de la lithologie des affleurements géologiques dans un climat semi-aride: cas du bassin versant de l'Oued Mellègue (Nord-Ouest de la Tunisie)
Auteurs : Ammar Mlayah [Tunisie] ; Eduardo Anselmo Ferreira Da Silva [Portugal] ; Fethi Lachaal [Tunisie] ; Samia Khadhar [Tunisie] ; Abdelkrim Charef [Tunisie] ; Fernando Noronha [Portugal]Source :
- Hydrological sciences journal [ 0262-6667 ] ; 2013.
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- Pascal (Inist)
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English descriptors
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Abstract
The northwest of Tunisia comprises more than 81% of surface waters and contains 95% of the country's mines and mineral deposits. The Mellègue catchment, located in this area, contains 10 mines extracting lead, zinc, iron, strontium, fluoride and phosphates. The impact of tailings from these mines on surface waters, was evaluated on the basis of several sampling campaigns. The results of ICP/MS analysis of the samples show that they are rich in Al, As, B, Ba, Br, Cd, Co, Cr, Cu, Hg, Mo, Ni, Sr, U and Zn. Tests for these elements in the waters of the Mellègue, its tributaries and in the Nebeur reservoir found that concentrations did not exceded the drinking water thresholds set by the WHO. The reduced water contamination with metals observed in this study may be due to: the presence of geological outcrops formed by limestone, clays and evaporite rocks, the absence of streams draining the tailings directly, and the formation of secondary minerals that strongly adsorb heavy metals and the extent of uncontaminated area in the catchment.
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type="wicri:Area/Main/Curation">000327</idno><idno type="wicri:Area/Main/Exploration">000327</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="fr" level="a">Effet auto-épurateur de la lithologie des affleurements géologiques dans un climat semi-aride: cas du bassin versant de l'Oued Mellègue (Nord-Ouest de la Tunisie)</title><author><name sortKey="Mlayah, Ammar" sort="Mlayah, Ammar" uniqKey="Mlayah A" first="Ammar" last="Mlayah">Ammar Mlayah</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire Géoressources, Centre de Recherches et des Technologies des Eaux (CERTE), Université Tunis Carthage, Route touristique de Soliman 8020</s1><s2>Soliman</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Soliman</wicri:noRegion></affiliation></author><author><name sortKey="Ferreira Da Silva, Eduardo Anselmo" sort="Ferreira Da Silva, Eduardo Anselmo" uniqKey="Ferreira Da Silva E" first="Eduardo Anselmo" last="Ferreira Da Silva">Eduardo Anselmo Ferreira Da Silva</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>GeoBioTec-Geobiosciences, Géotechnologies and Geoengineering Research Centre</s1><s2>3810-193 Aveiro</s2><s3>PRT</s3><sZ>2 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>3810-193 Aveiro</wicri:noRegion></affiliation></author><author><name sortKey="Lachaal, Fethi" sort="Lachaal, Fethi" uniqKey="Lachaal F" first="Fethi" last="Lachaal">Fethi Lachaal</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire Géoressources, Centre de Recherches et des Technologies des Eaux (CERTE), Université Tunis Carthage, Route touristique de Soliman 8020</s1><s2>Soliman</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Soliman</wicri:noRegion></affiliation></author><author><name sortKey="Khadhar, Samia" sort="Khadhar, Samia" uniqKey="Khadhar S" first="Samia" last="Khadhar">Samia Khadhar</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire Géoressources, Centre de Recherches et des Technologies des Eaux (CERTE), Université Tunis Carthage, Route touristique de Soliman 8020</s1><s2>Soliman</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Soliman</wicri:noRegion></affiliation></author><author><name sortKey="Charef, Abdelkrim" sort="Charef, Abdelkrim" uniqKey="Charef A" first="Abdelkrim" last="Charef">Abdelkrim Charef</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire Géoressources, Centre de Recherches et des Technologies des Eaux (CERTE), Université Tunis Carthage, Route touristique de Soliman 8020</s1><s2>Soliman</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Soliman</wicri:noRegion></affiliation></author><author><name sortKey="Noronha, Fernando" sort="Noronha, Fernando" uniqKey="Noronha F" first="Fernando" last="Noronha">Fernando Noronha</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Centro de Geologiada Universidade do Porto, Rua Campo Alegre</s1><s2>4769-007 Porto</s2><s3>PRT</s3><sZ>6 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>4769-007 Porto</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Hydrological sciences journal</title><title level="j" type="abbreviated">Hydrol. sci. j.</title><idno type="ISSN">0262-6667</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Hydrological sciences journal</title><title level="j" type="abbreviated">Hydrol. sci. j.</title><idno type="ISSN">0262-6667</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Tunisia</term><term>aluminum</term><term>arsenic</term><term>barium</term><term>boron</term><term>bromine</term><term>cadmium</term><term>chromium</term><term>cobalt</term><term>concentration</term><term>contamination</term><term>copper</term><term>drainage basins</term><term>evaporites</term><term>mercury</term><term>mines</term><term>nickel</term><term>phosphates</term><term>pollution</term><term>strontium</term><term>surface water</term><term>tailings</term><term>uranium</term><term>wadis</term><term>water resource management</term><term>zinc</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Eau surface</term><term>Bassin versant</term><term>Oued</term><term>Pollution</term><term>Mine</term><term>Zinc</term><term>Strontium</term><term>Phosphate</term><term>Haldes</term><term>Aluminium</term><term>Arsenic</term><term>Bore</term><term>Baryum</term><term>Brome</term><term>Cadmium</term><term>Cobalt</term><term>Chrome</term><term>Cuivre</term><term>Mercure</term><term>Nickel</term><term>Uranium</term><term>Gestion ressource eau</term><term>Concentration</term><term>Contamination</term><term>Evaporite</term><term>Tunisie</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Tunisie</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Pollution</term><term>Zinc</term><term>Phosphate</term><term>Aluminium</term><term>Brome</term><term>Cadmium</term><term>Cobalt</term><term>Chrome</term><term>Cuivre</term><term>Mercure</term><term>Nickel</term><term>Uranium</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="fr">The northwest of Tunisia comprises more than 81% of surface waters and contains 95% of the country's mines and mineral deposits. The Mellègue catchment, located in this area, contains 10 mines extracting lead, zinc, iron, strontium, fluoride and phosphates. The impact of tailings from these mines on surface waters, was evaluated on the basis of several sampling campaigns. The results of ICP/MS analysis of the samples show that they are rich in Al, As, B, Ba, Br, Cd, Co, Cr, Cu, Hg, Mo, Ni, Sr, U and Zn. Tests for these elements in the waters of the Mellègue, its tributaries and in the Nebeur reservoir found that concentrations did not exceded the drinking water thresholds set by the WHO. The reduced water contamination with metals observed in this study may be due to: the presence of geological outcrops formed by limestone, clays and evaporite rocks, the absence of streams draining the tailings directly, and the formation of secondary minerals that strongly adsorb heavy metals and the extent of uncontaminated area in the catchment.</div></front></TEI><affiliations><list><country><li>Portugal</li><li>Tunisie</li></country></list><tree><country name="Tunisie"><noRegion><name sortKey="Mlayah, Ammar" sort="Mlayah, Ammar" uniqKey="Mlayah A" first="Ammar" last="Mlayah">Ammar Mlayah</name></noRegion><name sortKey="Charef, Abdelkrim" sort="Charef, Abdelkrim" uniqKey="Charef A" first="Abdelkrim" last="Charef">Abdelkrim Charef</name><name sortKey="Khadhar, Samia" sort="Khadhar, Samia" uniqKey="Khadhar S" first="Samia" last="Khadhar">Samia Khadhar</name><name sortKey="Lachaal, Fethi" sort="Lachaal, Fethi" uniqKey="Lachaal F" first="Fethi" last="Lachaal">Fethi Lachaal</name></country><country name="Portugal"><noRegion><name sortKey="Ferreira Da Silva, Eduardo Anselmo" sort="Ferreira Da Silva, Eduardo Anselmo" uniqKey="Ferreira Da Silva E" first="Eduardo Anselmo" last="Ferreira Da Silva">Eduardo Anselmo Ferreira Da Silva</name></noRegion><name sortKey="Noronha, Fernando" sort="Noronha, Fernando" uniqKey="Noronha F" first="Fernando" last="Noronha">Fernando Noronha</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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