PoplarV1, Main, Exploration, bibRecord, 004322

Adsorption of lead and cadmium ions in aqueous solutions onto modified lignin from alkali glycerol delignication.

Identifieur interne : 004322 ( Main/Exploration ); précédent : 004321; suivant : 004323

Adsorption of lead and cadmium ions in aqueous solutions onto modified lignin from alkali glycerol delignication.

Auteurs : Ayhan Demirbas [Turquie]

Source :

Journal of hazardous materials [ 0304-3894 ] ; 2004.

RBID : pubmed:15177762

Descripteurs français

KwdFr :
- Adsorption (MeSH), Alcalis (composition chimique), Cadmium (isolement et purification), Déchets industriels (prévention et contrôle), Eau (composition chimique), Fagus (MeSH), Glycérol (composition chimique), Lignine (composition chimique), Modèles chimiques (MeSH), Plomb (isolement et purification), Populus (MeSH), Solutions (MeSH).
MESH :
- composition chimique : Alcalis, Eau, Glycérol, Lignine.
- isolement et purification : Cadmium, Plomb.
- prévention et contrôle : Déchets industriels.
- Adsorption, Fagus, Modèles chimiques, Populus, Solutions.

English descriptors

KwdEn :
- Adsorption (MeSH), Alkalies (chemistry), Cadmium (isolation & purification), Fagus (MeSH), Glycerol (chemistry), Industrial Waste (prevention & control), Lead (isolation & purification), Lignin (chemistry), Models, Chemical (MeSH), Populus (MeSH), Solutions (MeSH), Water (chemistry).
MESH :
- chemical , chemistry : Alkalies, Glycerol, Lignin, Water.
- chemical , isolation & purification : Cadmium, Lead.
- chemical , prevention & control : Industrial Waste.
- Adsorption, Fagus, Models, Chemical, Populus, Solutions.

Abstract

Adsorptions of toxic metal ions (Pb(II) and Cd(II)) onto modified lignin from beech and poplar woods by alkali glycerol delignification are presented in this paper. The material exhibits good adsorption capacity and the adsorption data follow the Langmuir model. The maximum adsorption capacities are 8.2-9.0 and 6.7-7.5 mg/g of the modified lignin for Pb(II) and Cd(II), respectively. The maximum adsorption percentage is 95.8 for Pb(II) for 4 h at 330 K and is 95.0 for Cd(II) for 10 h at 290 K. The adsorption of both the metal ions increased with increasing temperature indicating endothermic nature of the adsorption process. The maximum adsorption percentages of Pb(II) and Cd(II) ions decrease with time till 48 and 42 h and then again increase slightly with time. The adsorption of both heavy metal ions increases with pH. The adsorption of Pb(II) ions reached a maximum at a 5.0 value of pH.

DOI: 10.1016/j.jhazmat.2004.04.002
PubMed: 15177762

Affiliations:

Turquie

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Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption (MeSH)</term>
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<term>Alcalis (composition chimique)</term>
<term>Cadmium (isolement et purification)</term>
<term>Déchets industriels (prévention et contrôle)</term>
<term>Eau (composition chimique)</term>
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<term>Glycérol (composition chimique)</term>
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<term>Modèles chimiques (MeSH)</term>
<term>Plomb (isolement et purification)</term>
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<front><div type="abstract" xml:lang="en">Adsorptions of toxic metal ions (Pb(II) and Cd(II)) onto modified lignin from beech and poplar woods by alkali glycerol delignification are presented in this paper. The material exhibits good adsorption capacity and the adsorption data follow the Langmuir model. The maximum adsorption capacities are 8.2-9.0 and 6.7-7.5 mg/g of the modified lignin for Pb(II) and Cd(II), respectively. The maximum adsorption percentage is 95.8 for Pb(II) for 4 h at 330 K and is 95.0 for Cd(II) for 10 h at 290 K. The adsorption of both the metal ions increased with increasing temperature indicating endothermic nature of the adsorption process. The maximum adsorption percentages of Pb(II) and Cd(II) ions decrease with time till 48 and 42 h and then again increase slightly with time. The adsorption of both heavy metal ions increases with pH. The adsorption of Pb(II) ions reached a maximum at a 5.0 value of pH.</div>
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<Abstract><AbstractText>Adsorptions of toxic metal ions (Pb(II) and Cd(II)) onto modified lignin from beech and poplar woods by alkali glycerol delignification are presented in this paper. The material exhibits good adsorption capacity and the adsorption data follow the Langmuir model. The maximum adsorption capacities are 8.2-9.0 and 6.7-7.5 mg/g of the modified lignin for Pb(II) and Cd(II), respectively. The maximum adsorption percentage is 95.8 for Pb(II) for 4 h at 330 K and is 95.0 for Cd(II) for 10 h at 290 K. The adsorption of both the metal ions increased with increasing temperature indicating endothermic nature of the adsorption process. The maximum adsorption percentages of Pb(II) and Cd(II) ions decrease with time till 48 and 42 h and then again increase slightly with time. The adsorption of both heavy metal ions increases with pH. The adsorption of Pb(II) ions reached a maximum at a 5.0 value of pH.</AbstractText>
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Adsorption of lead and cadmium ions in aqueous solutions onto modified lignin from alkali glycerol delignication.

Adsorption of lead and cadmium ions in aqueous solutions onto modified lignin from alkali glycerol delignication.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

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