Adsorption of Cu(II) ions from aqueous solutions on biochars prepared from agricultural by-products.
Identifieur interne : 001413 ( Main/Exploration ); précédent : 001412; suivant : 001414Adsorption of Cu(II) ions from aqueous solutions on biochars prepared from agricultural by-products.
Auteurs : Frantseska-Maria Pellera [Grèce] ; Apostolos Giannis ; Dimitrios Kalderis ; Kalliopi Anastasiadou ; Rainer Stegmann ; Jing-Yuan Wang ; Evangelos GidarakosSource :
- Journal of environmental management [ 1095-8630 ] ; 2012.
English descriptors
- KwdEn :
- Adsorption, Citrus sinensis (chemistry), Copper (isolation & purification), Food Industry, Heating, Hydrogen-Ion Concentration, Industrial Waste, Kinetics, Olea (chemistry), Oryza (chemistry), Soil (chemistry), Solutions, Temperature, Time Factors, Water Pollutants, Chemical (isolation & purification).
- MESH :
- chemical , chemistry : Soil.
- chemical , isolation & purification : Copper, Water Pollutants, Chemical.
- chemistry : Citrus sinensis, Olea, Oryza.
- Adsorption, Food Industry, Heating, Hydrogen-Ion Concentration, Industrial Waste, Kinetics, Solutions, Temperature, Time Factors.
Abstract
In this study, the adsorption of Cu(II) from aqueous solutions by agricultural by-products, such as rice husks, olive pomace and orange waste, as well as compost, was evaluated. The aim was to obtain sorbent materials (biochars) through hydrothermal treatment (300 °C) and pyrolysis (300 °C and 600 °C). The effect of adsorbent dose, pH, contact time and initial Cu(II) concentration in batch-mode experiments was investigated. The optimum Cu(II) adsorption conditions was found to occur at 5-12 g/L adsorbent dose, initial pH 5-6, and reaction time 2-4 h. Furthermore, the adsorption kinetics were best described by the pseudo-second order model for all the tested materials, while the adsorption equilibrium best fitted by the linear and Freundlich isotherms. Comparing rice husks and olive pomace, the higher adsorption capacity resulted after pyrolysis at 300 °C. With respect to the orange waste and compost, the highest adsorption capacity was observed using biochars obtained after hydrothermal treatment and pyrolysis at 300 °C.
DOI: 10.1016/j.jenvman.2011.10.010
PubMed: 22208396
Affiliations:
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uniqKey="Kalderis D" first="Dimitrios" last="Kalderis">Dimitrios Kalderis</name></author><author><name sortKey="Anastasiadou, Kalliopi" sort="Anastasiadou, Kalliopi" uniqKey="Anastasiadou K" first="Kalliopi" last="Anastasiadou">Kalliopi Anastasiadou</name></author><author><name sortKey="Stegmann, Rainer" sort="Stegmann, Rainer" uniqKey="Stegmann R" first="Rainer" last="Stegmann">Rainer Stegmann</name></author><author><name sortKey="Wang, Jing Yuan" sort="Wang, Jing Yuan" uniqKey="Wang J" first="Jing-Yuan" last="Wang">Jing-Yuan Wang</name></author><author><name sortKey="Gidarakos, Evangelos" sort="Gidarakos, Evangelos" uniqKey="Gidarakos E" first="Evangelos" last="Gidarakos">Evangelos Gidarakos</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2012">2012</date><idno type="RBID">pubmed:22208396</idno><idno type="pmid">22208396</idno><idno type="doi">10.1016/j.jenvman.2011.10.010</idno><idno type="wicri:Area/PubMed/Corpus">000622</idno><idno 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xml:lang="fr">Grèce</country><wicri:regionArea>Department of Environmental Engineering, Technical University of Crete, Politechnioupolis, 73100 Chania</wicri:regionArea><wicri:noRegion>73100 Chania</wicri:noRegion></affiliation></author><author><name sortKey="Giannis, Apostolos" sort="Giannis, Apostolos" uniqKey="Giannis A" first="Apostolos" last="Giannis">Apostolos Giannis</name></author><author><name sortKey="Kalderis, Dimitrios" sort="Kalderis, Dimitrios" uniqKey="Kalderis D" first="Dimitrios" last="Kalderis">Dimitrios Kalderis</name></author><author><name sortKey="Anastasiadou, Kalliopi" sort="Anastasiadou, Kalliopi" uniqKey="Anastasiadou K" first="Kalliopi" last="Anastasiadou">Kalliopi Anastasiadou</name></author><author><name sortKey="Stegmann, Rainer" sort="Stegmann, Rainer" uniqKey="Stegmann R" first="Rainer" last="Stegmann">Rainer Stegmann</name></author><author><name sortKey="Wang, Jing Yuan" sort="Wang, Jing Yuan" uniqKey="Wang J" first="Jing-Yuan" last="Wang">Jing-Yuan Wang</name></author><author><name sortKey="Gidarakos, Evangelos" sort="Gidarakos, Evangelos" uniqKey="Gidarakos E" first="Evangelos" last="Gidarakos">Evangelos Gidarakos</name></author></analytic><series><title level="j">Journal of environmental management</title><idno type="eISSN">1095-8630</idno><imprint><date when="2012" type="published">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption</term><term>Citrus sinensis (chemistry)</term><term>Copper (isolation & purification)</term><term>Food Industry</term><term>Heating</term><term>Hydrogen-Ion Concentration</term><term>Industrial Waste</term><term>Kinetics</term><term>Olea (chemistry)</term><term>Oryza (chemistry)</term><term>Soil (chemistry)</term><term>Solutions</term><term>Temperature</term><term>Time Factors</term><term>Water Pollutants, Chemical (isolation & purification)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Soil</term></keywords><keywords scheme="MESH" type="chemical" qualifier="isolation & purification" xml:lang="en"><term>Copper</term><term>Water Pollutants, Chemical</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Citrus sinensis</term><term>Olea</term><term>Oryza</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adsorption</term><term>Food Industry</term><term>Heating</term><term>Hydrogen-Ion Concentration</term><term>Industrial Waste</term><term>Kinetics</term><term>Solutions</term><term>Temperature</term><term>Time Factors</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this study, the adsorption of Cu(II) from aqueous solutions by agricultural by-products, such as rice husks, olive pomace and orange waste, as well as compost, was evaluated. The aim was to obtain sorbent materials (biochars) through hydrothermal treatment (300 °C) and pyrolysis (300 °C and 600 °C). The effect of adsorbent dose, pH, contact time and initial Cu(II) concentration in batch-mode experiments was investigated. The optimum Cu(II) adsorption conditions was found to occur at 5-12 g/L adsorbent dose, initial pH 5-6, and reaction time 2-4 h. Furthermore, the adsorption kinetics were best described by the pseudo-second order model for all the tested materials, while the adsorption equilibrium best fitted by the linear and Freundlich isotherms. Comparing rice husks and olive pomace, the higher adsorption capacity resulted after pyrolysis at 300 °C. With respect to the orange waste and compost, the highest adsorption capacity was observed using biochars obtained after hydrothermal treatment and pyrolysis at 300 °C.</div></front></TEI><affiliations><list><country><li>Grèce</li></country></list><tree><noCountry><name sortKey="Anastasiadou, Kalliopi" sort="Anastasiadou, Kalliopi" uniqKey="Anastasiadou K" first="Kalliopi" last="Anastasiadou">Kalliopi Anastasiadou</name><name sortKey="Giannis, Apostolos" sort="Giannis, Apostolos" uniqKey="Giannis A" first="Apostolos" last="Giannis">Apostolos Giannis</name><name sortKey="Gidarakos, Evangelos" sort="Gidarakos, Evangelos" uniqKey="Gidarakos E" first="Evangelos" last="Gidarakos">Evangelos Gidarakos</name><name sortKey="Kalderis, Dimitrios" sort="Kalderis, Dimitrios" uniqKey="Kalderis D" first="Dimitrios" last="Kalderis">Dimitrios Kalderis</name><name sortKey="Stegmann, Rainer" sort="Stegmann, Rainer" uniqKey="Stegmann R" first="Rainer" last="Stegmann">Rainer Stegmann</name><name sortKey="Wang, Jing Yuan" sort="Wang, Jing Yuan" uniqKey="Wang J" first="Jing-Yuan" last="Wang">Jing-Yuan Wang</name></noCountry><country name="Grèce"><noRegion><name sortKey="Pellera, Frantseska Maria" sort="Pellera, Frantseska Maria" uniqKey="Pellera F" first="Frantseska-Maria" last="Pellera">Frantseska-Maria Pellera</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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