June 1, 2018 Thesis Open Access

Mebrahtu Gebrezgiher

DCAT Export

<?xml version='1.0' encoding='utf-8'?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:adms="http://www.w3.org/ns/adms#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dct="http://purl.org/dc/terms/" xmlns:dctype="http://purl.org/dc/dcmitype/" xmlns:dcat="http://www.w3.org/ns/dcat#" xmlns:duv="http://www.w3.org/ns/duv#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:frapo="http://purl.org/cerif/frapo/" xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#" xmlns:gsp="http://www.opengis.net/ont/geosparql#" xmlns:locn="http://www.w3.org/ns/locn#" xmlns:org="http://www.w3.org/ns/org#" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:prov="http://www.w3.org/ns/prov#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:schema="http://schema.org/" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:vcard="http://www.w3.org/2006/vcard/ns#" xmlns:wdrs="http://www.w3.org/2007/05/powder-s#">
  <rdf:Description rdf:about="https://doi.org/10.20372/nadre:4860">
    <rdf:type rdf:resource="http://www.w3.org/ns/dcat#Dataset"/>
    <dct:type rdf:resource="http://purl.org/dc/dcmitype/Text"/>
    <dct:identifier rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">https://doi.org/10.20372/nadre:4860</dct:identifier>
    <foaf:page rdf:resource="https://doi.org/10.20372/nadre:4860"/>
    <dct:creator>
      <rdf:Description>
        <rdf:type rdf:resource="http://xmlns.com/foaf/0.1/Agent"/>
        <foaf:name>Mebrahtu Gebrezgiher</foaf:name>
      </rdf:Description>
    </dct:creator>
    <dct:title>UTILIZATION OF CACTUS PEEL AS BIOADSORBENT FOR THE REMOVAL OF REACTIVE RED DYES FROM TEXTILE DYE EFFLUENTS</dct:title>
    <dct:publisher>
      <foaf:Agent>
        <foaf:name>Zenodo</foaf:name>
      </foaf:Agent>
    </dct:publisher>
    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear">2018</dct:issued>
    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2018-06-01</dct:issued>
    <owl:sameAs rdf:resource="https://nadre.ethernet.edu.et/record/4860"/>
    <adms:identifier>
      <adms:Identifier>
        <skos:notation rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">https://nadre.ethernet.edu.et/record/4860</skos:notation>
        <adms:schemeAgency>url</adms:schemeAgency>
      </adms:Identifier>
    </adms:identifier>
    <dct:isVersionOf rdf:resource="https://doi.org/10.20372/nadre:4859"/>
    <dct:isPartOf rdf:resource="https://nadre.ethernet.edu.et/communities/aau"/>
    <dct:isPartOf rdf:resource="https://nadre.ethernet.edu.et/communities/zenodo"/>
    <dct:description>&lt;p&gt;Numerous dye staffs are used in textile industries to paint their products and produces high discharge rate of wastewater with high load of pollutants. Now the presence of dyes in the aquatic systems has become a serious environmental problem. currently bioadsorbents have become desirable for the removal of dyes from textile dye effluents due to their good performance, low cost, simple design, no sludge generation and their accessibility. In this study, the biosorption characteristics and feasibility of cactus peel have been analyzed to remove reactive dyes from aqueous solutions. Batch biosorption experiments were carried out for the biosorption of reactive dye molecule from aqueous solution onto the cactus peel adsorbent at constant room temperature of 25oC and agitation speed 200rpm.The effects of diverse process parameters like solution pH, biosorbent dosage, contact time and initial concentration were studied in batch adsorption.&lt;br&gt; For the equilibrium studies, Langmuir and Freundlich isotherm models were applied to identify the relationship between the concentration of dye ions in the solution and the amount of dye ions adsorbed to the cactus peel adsorbent. The interaction effect of process variables was studied using response surface methodology. The results from the experiments showed that, removal efficiency of reactive red dye was found to increase with lower initial dye concentration, lower solution pH, maximum biosorbent dosage and higher contact time&lt;/p&gt;</dct:description>
    <dct:accessRights rdf:resource="http://publications.europa.eu/resource/authority/access-right/PUBLIC"/>
    <dct:accessRights>
      <dct:RightsStatement rdf:about="info:eu-repo/semantics/openAccess">
        <rdfs:label>Open Access</rdfs:label>
      </dct:RightsStatement>
    </dct:accessRights>
    <dcat:distribution>
      <dcat:Distribution>
        <dct:rights>
          <dct:RightsStatement rdf:about="http://www.opendefinition.org/licenses/cc-by">
            <rdfs:label>Creative Commons Attribution</rdfs:label>
          </dct:RightsStatement>
        </dct:rights>
        <dcat:accessURL rdf:resource="https://doi.org/10.20372/nadre:4860"/>
      </dcat:Distribution>
    </dcat:distribution>
    <dcat:distribution>
      <dcat:Distribution>
        <dcat:accessURL rdf:resource="https://doi.org/10.20372/nadre:4860"/>
        <dcat:byteSize>647925</dcat:byteSize>
        <dcat:downloadURL rdf:resource="https://nadre.ethernet.edu.et/record/4860/files/f1042664640.pdf"/>
        <dcat:mediaType>application/pdf</dcat:mediaType>
      </dcat:Distribution>
    </dcat:distribution>
  </rdf:Description>
</rdf:RDF>