NickelMaghrebV1, Main, Merge, bibRecord, 000989

Enhancement of the adsorptive properties of a desert salsola vermiculata species

Identifieur interne : 000989 ( Main/Merge ); précédent : 000988; suivant : 000990

Enhancement of the adsorptive properties of a desert salsola vermiculata species

Auteurs : Noureddine Benderdouche [Algérie] ; Benaouda Bestani [Algérie] ; Baghdad Benstaali [Algérie] ; Zoubir Derriche [Algérie]

Source :

Adsorption Science & Technology [ 0263-6174 ] ; 2003.

RBID : Pascal:04-0111809

Descripteurs français

Pascal (Inist)
- Plante, Adsorbant, Activation, Traitement thermique, Phosphorique acide, Adsorption liquide solide, Interface liquide solide, Acétique acide, Acide carboxylique, Cuivre II, Nickel II, Isotherme adsorption, Solution aqueuse, Isotherme Langmuir, Feuille végétal, Vapeur eau, Salsola Vermiculata, Wood carbon.

English descriptors

KwdEn :
- Acetic acid, Activation, Adsorbent, Adsorption isotherm, Aqueous solution, Carboxylic acid, Copper II, Heat treatment, Langmuir isotherm, Liquid solid adsorption, Liquid solid interface, Nickel II, Phosphoric acid, Plant, Plant leaf, Water vapor.

Abstract

Heat pretreatment, steam activation and 20% phosphoric acid activation were found to enhance the adsorption capacity of a desert Salsola Vermiculata plant species significantly relative to the inactivated plant and powdered wood carbon 600200 EX 694 as obtained from Belgium. The batch adsorption experiments resulted in a maximum adsorption capacity determined from Langmuir models of up to 476 mg/g for acetic acid, 238 mg/g for copper(II) ions and 144 mg/g for nickel(II) ions, whereas for the inactivated plant they attained values of 53 mg/g, 65 mg/g and 18 mg/g, respectively. The results for the wood carbon were 65 mg/g for acetic acid, 45 mg/g for copper(II) ions and 2.4 mg/g for nickel(II) ions. The Freundlich model was found to provide a better description of copper(II) ion adsorption onto the steam- and chemically-activated plant, whereas nickel(II) ion adsorption processes followed Langmuir behaviour. These results showed that the activated plant could prove to be very useful in removing toxic substances from wastewater.

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Pascal:04-0111809

Le document en format XML

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<term>Carboxylic acid</term>
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<term>Heat treatment</term>
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<term>Activation</term>
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<front><div type="abstract" xml:lang="en">Heat pretreatment, steam activation and 20% phosphoric acid activation were found to enhance the adsorption capacity of a desert Salsola Vermiculata plant species significantly relative to the inactivated plant and powdered wood carbon 600200 EX 694 as obtained from Belgium. The batch adsorption experiments resulted in a maximum adsorption capacity determined from Langmuir models of up to 476 mg/g for acetic acid, 238 mg/g for copper(II) ions and 144 mg/g for nickel(II) ions, whereas for the inactivated plant they attained values of 53 mg/g, 65 mg/g and 18 mg/g, respectively. The results for the wood carbon were 65 mg/g for acetic acid, 45 mg/g for copper(II) ions and 2.4 mg/g for nickel(II) ions. The Freundlich model was found to provide a better description of copper(II) ion adsorption onto the steam- and chemically-activated plant, whereas nickel(II) ion adsorption processes followed Langmuir behaviour. These results showed that the activated plant could prove to be very useful in removing toxic substances from wastewater.</div>
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Enhancement of the adsorptive properties of a desert salsola vermiculata species

Enhancement of the adsorptive properties of a desert salsola vermiculata species

Source :

Descripteurs français

English descriptors

Abstract

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

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri