Performance and mechanism of methylene blue biosorption on orange peel.
Identifieur interne : 000892 ( Ncbi/Merge ); précédent : 000891; suivant : 000893Performance and mechanism of methylene blue biosorption on orange peel.
Auteurs : L. Cui [République populaire de Chine] ; C. Liu ; G. WuSource :
- Environmental technology [ 0959-3330 ] ; 2008.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Coloring Agents, Methylene Blue.
- chemistry : Citrus sinensis.
- chemical , isolation & purification : Methylene Blue.
- methods : Water Purification.
- Adsorption, Kinetics, Potentiometry, Solutions, Spectroscopy, Fourier Transform Infrared.
Abstract
Biosorption of Methylene Blue (MB) from aqueous solution using orange peel biosorbent was experimentally investigated. The effects of dye concentration, solution pH, salt concentration and contact time were investigated in a batch model. The results showed that adsorption equilibrium was reached within one hour at two initial MB concentrations (200 and 1000 mg 1(-1)). The uptake of MB was significantly affected by the pH of dye solution. As the pH decreased, the uptake of MB decreased and was zero at pH 2. The Langmuir isotherm model fitted the experimental data well, and the maximum adsorption capacities of the orange peel were 246.8 +/- 10.6 and 370.3 +/- 31.0 mg g(-1) at pH 7 and pH 10, respectively. The uptake of MB was significantly affected by the high concentration of salts. Adsorption of MB onto orange peel was reversible, and the sorption/desorption efficiencies remained almost 100% even up to seven reuse cycles when the biosorbent loss was taken into consideration. The binding sites were identified to be primary carboxyl groups present in orange peel. The main mechanism of MB adsorption is considered to be electrostatic interaction.
DOI: 10.1080/00207210802166872
PubMed: 18844129
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Cui</name><affiliation wicri:level="1"><nlm:affiliation>Key Laboratory of Catalysts and Materials Science of Hubei Province, College of Chemical and Material Science, South-central University for Nationalities, Wuhan 430-074, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Catalysts and Materials Science of Hubei Province, College of Chemical and Material Science, South-central University for Nationalities, Wuhan 430-074</wicri:regionArea><wicri:noRegion>Wuhan 430-074</wicri:noRegion></affiliation></author><author><name sortKey="Liu, C" sort="Liu, C" uniqKey="Liu C" first="C" last="Liu">C. Liu</name></author><author><name sortKey="Wu, G" sort="Wu, G" uniqKey="Wu G" first="G" last="Wu">G. Wu</name></author></analytic><series><title level="j">Environmental technology</title><idno type="ISSN">0959-3330</idno><imprint><date when="2008" type="published">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption</term><term>Citrus sinensis (chemistry)</term><term>Coloring Agents (chemistry)</term><term>Kinetics</term><term>Methylene Blue (chemistry)</term><term>Methylene Blue (isolation & purification)</term><term>Potentiometry</term><term>Solutions</term><term>Spectroscopy, Fourier Transform Infrared</term><term>Water Purification (methods)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Coloring Agents</term><term>Methylene Blue</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Citrus sinensis</term></keywords><keywords scheme="MESH" type="chemical" qualifier="isolation & purification" xml:lang="en"><term>Methylene Blue</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Water Purification</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adsorption</term><term>Kinetics</term><term>Potentiometry</term><term>Solutions</term><term>Spectroscopy, Fourier Transform Infrared</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Biosorption of Methylene Blue (MB) from aqueous solution using orange peel biosorbent was experimentally investigated. The effects of dye concentration, solution pH, salt concentration and contact time were investigated in a batch model. The results showed that adsorption equilibrium was reached within one hour at two initial MB concentrations (200 and 1000 mg 1(-1)). The uptake of MB was significantly affected by the pH of dye solution. As the pH decreased, the uptake of MB decreased and was zero at pH 2. The Langmuir isotherm model fitted the experimental data well, and the maximum adsorption capacities of the orange peel were 246.8 +/- 10.6 and 370.3 +/- 31.0 mg g(-1) at pH 7 and pH 10, respectively. The uptake of MB was significantly affected by the high concentration of salts. Adsorption of MB onto orange peel was reversible, and the sorption/desorption efficiencies remained almost 100% even up to seven reuse cycles when the biosorbent loss was taken into consideration. The binding sites were identified to be primary carboxyl groups present in orange peel. The main mechanism of MB adsorption is considered to be electrostatic interaction.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">18844129</PMID><DateCreated><Year>2008</Year><Month>10</Month><Day>10</Day></DateCreated><DateCompleted><Year>2008</Year><Month>11</Month><Day>04</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0959-3330</ISSN><JournalIssue CitedMedium="Print"><Volume>29</Volume><Issue>9</Issue><PubDate><Year>2008</Year><Month>Sep</Month></PubDate></JournalIssue><Title>Environmental technology</Title><ISOAbbreviation>Environ Technol</ISOAbbreviation></Journal><ArticleTitle>Performance and mechanism of methylene blue biosorption on orange peel.</ArticleTitle><Pagination><MedlinePgn>1021-30</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1080/00207210802166872</ELocationID><Abstract><AbstractText>Biosorption of Methylene Blue (MB) from aqueous solution using orange peel biosorbent was experimentally investigated. The effects of dye concentration, solution pH, salt concentration and contact time were investigated in a batch model. The results showed that adsorption equilibrium was reached within one hour at two initial MB concentrations (200 and 1000 mg 1(-1)). The uptake of MB was significantly affected by the pH of dye solution. As the pH decreased, the uptake of MB decreased and was zero at pH 2. The Langmuir isotherm model fitted the experimental data well, and the maximum adsorption capacities of the orange peel were 246.8 +/- 10.6 and 370.3 +/- 31.0 mg g(-1) at pH 7 and pH 10, respectively. The uptake of MB was significantly affected by the high concentration of salts. Adsorption of MB onto orange peel was reversible, and the sorption/desorption efficiencies remained almost 100% even up to seven reuse cycles when the biosorbent loss was taken into consideration. The binding sites were identified to be primary carboxyl groups present in orange peel. 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Liu</name><name sortKey="Wu, G" sort="Wu, G" uniqKey="Wu G" first="G" last="Wu">G. Wu</name></noCountry><country name="République populaire de Chine"><noRegion><name sortKey="Cui, L" sort="Cui, L" uniqKey="Cui L" first="L" last="Cui">L. Cui</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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