Biosorption of landfill leachate by Phanerochaete sp. ISTL01: isotherms, kinetics and toxicological assessment.
Identifieur interne : 000190 ( Main/Corpus ); précédent : 000189; suivant : 000191Biosorption of landfill leachate by Phanerochaete sp. ISTL01: isotherms, kinetics and toxicological assessment.
Auteurs : Pooja Ghosh ; Indu Shekhar ThakurSource :
- Environmental technology [ 1479-487X ] ; 2017.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Water Pollutants, Chemical.
- chemistry : Phanerochaete.
- drug effects : Cell Survival.
- methods : Waste Disposal, Fluid.
- chemical , toxicity : Water Pollutants, Chemical.
- Adsorption, Comet Assay, Hep G2 Cells, Humans, Kinetics.
Abstract
The study investigates the ability of fungus Phanerochaete sp. ISTL01 for biosorption of color from landfill leachate. Batch mode experiments were conducted to study the effects of pH, temperature, adsorbent dose, contact time and initial leachate concentration on biosorption. Maximum biosorption capacity was determined as 17.73 mg g-1 of biomass. Equilibrium isotherms and kinetics were further studied. The biosorption data were found to fit well to the Freundlich isotherm and pseudo-second-order kinetic model. The value of activation energy suggested that chemisorption mechanism was involved. Biosorption efficiency was also evaluated by the Methyltetrazolium (MTT) assay for cytotoxicity and alkaline comet assay in HepG2 human hepato-carcinoma cells. The fungus reduced toxicity as shown by 1.3-fold increase in MTT EC50 and 1.5- and 1.1-fold reduction in Tail moment and Olive tail moment, respectively, after 12 h biosorption. The fungus showed good biosorption characteristics in terms of contaminant-level reduction per unit mass of adsorbent, process kinetics and toxicity reduction, envisaging its application in leachate treatment.
DOI: 10.1080/09593330.2016.1244218
PubMed: 27745028
Links to Exploration step
pubmed:27745028Le document en format XML
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<author><name sortKey="Ghosh, Pooja" sort="Ghosh, Pooja" uniqKey="Ghosh P" first="Pooja" last="Ghosh">Pooja Ghosh</name>
<affiliation><nlm:affiliation>a School of Environmental Sciences , Jawaharlal Nehru University , New Delhi , India.</nlm:affiliation>
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<author><name sortKey="Thakur, Indu Shekhar" sort="Thakur, Indu Shekhar" uniqKey="Thakur I" first="Indu Shekhar" last="Thakur">Indu Shekhar Thakur</name>
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<author><name sortKey="Thakur, Indu Shekhar" sort="Thakur, Indu Shekhar" uniqKey="Thakur I" first="Indu Shekhar" last="Thakur">Indu Shekhar Thakur</name>
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<series><title level="j">Environmental technology</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption (MeSH)</term>
<term>Cell Survival (drug effects)</term>
<term>Comet Assay (MeSH)</term>
<term>Hep G2 Cells (MeSH)</term>
<term>Humans (MeSH)</term>
<term>Kinetics (MeSH)</term>
<term>Phanerochaete (chemistry)</term>
<term>Waste Disposal, Fluid (methods)</term>
<term>Water Pollutants, Chemical (chemistry)</term>
<term>Water Pollutants, Chemical (toxicity)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Water Pollutants, Chemical</term>
</keywords>
<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Phanerochaete</term>
</keywords>
<keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Cell Survival</term>
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<keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Waste Disposal, Fluid</term>
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<keywords scheme="MESH" type="chemical" qualifier="toxicity" xml:lang="en"><term>Water Pollutants, Chemical</term>
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<keywords scheme="MESH" xml:lang="en"><term>Adsorption</term>
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<front><div type="abstract" xml:lang="en">The study investigates the ability of fungus Phanerochaete sp. ISTL01 for biosorption of color from landfill leachate. Batch mode experiments were conducted to study the effects of pH, temperature, adsorbent dose, contact time and initial leachate concentration on biosorption. Maximum biosorption capacity was determined as 17.73 mg g<sup>-1</sup>
of biomass. Equilibrium isotherms and kinetics were further studied. The biosorption data were found to fit well to the Freundlich isotherm and pseudo-second-order kinetic model. The value of activation energy suggested that chemisorption mechanism was involved. Biosorption efficiency was also evaluated by the Methyltetrazolium (MTT) assay for cytotoxicity and alkaline comet assay in HepG2 human hepato-carcinoma cells. The fungus reduced toxicity as shown by 1.3-fold increase in MTT EC<sub>50</sub>
and 1.5- and 1.1-fold reduction in Tail moment and Olive tail moment, respectively, after 12 h biosorption. The fungus showed good biosorption characteristics in terms of contaminant-level reduction per unit mass of adsorbent, process kinetics and toxicity reduction, envisaging its application in leachate treatment.</div>
</front>
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<Abstract><AbstractText>The study investigates the ability of fungus Phanerochaete sp. ISTL01 for biosorption of color from landfill leachate. Batch mode experiments were conducted to study the effects of pH, temperature, adsorbent dose, contact time and initial leachate concentration on biosorption. Maximum biosorption capacity was determined as 17.73 mg g<sup>-1</sup>
of biomass. Equilibrium isotherms and kinetics were further studied. The biosorption data were found to fit well to the Freundlich isotherm and pseudo-second-order kinetic model. The value of activation energy suggested that chemisorption mechanism was involved. Biosorption efficiency was also evaluated by the Methyltetrazolium (MTT) assay for cytotoxicity and alkaline comet assay in HepG2 human hepato-carcinoma cells. The fungus reduced toxicity as shown by 1.3-fold increase in MTT EC<sub>50</sub>
and 1.5- and 1.1-fold reduction in Tail moment and Olive tail moment, respectively, after 12 h biosorption. The fungus showed good biosorption characteristics in terms of contaminant-level reduction per unit mass of adsorbent, process kinetics and toxicity reduction, envisaging its application in leachate treatment.</AbstractText>
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<ForeName>Pooja</ForeName>
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<AffiliationInfo><Affiliation>a School of Environmental Sciences , Jawaharlal Nehru University , New Delhi , India.</Affiliation>
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<MeshHeading><DescriptorName UI="D020552" MajorTopicYN="N">Comet Assay</DescriptorName>
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<KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Landfill leachate</Keyword>
<Keyword MajorTopicYN="N">biosorption</Keyword>
<Keyword MajorTopicYN="N">fungi</Keyword>
<Keyword MajorTopicYN="N">isotherm</Keyword>
<Keyword MajorTopicYN="N">toxicity reduction</Keyword>
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