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Adsorption Kinetics of Cu(II) from Aqueous Solution by Low Cost Chemically Modified Saw Dust of Morus alba

Adsorptionskinetik von Cu(II) aus wässriger Lösung an preiswertem, chemisch modifiziertem Sägemehl des Morus alba
  • Sultan Alam , Azmat Ullah , Noor-ul-Amin and Najeeb-ur-Rehman

Abstract

Adsorption kinetics of Cu(II) from aqueous solution by low cost chemically modified saw dust of Morus alba was investigated. The samples were characterized by FT-IR, EDS, BET surface area and Zeta potential technique. The surfaces contain carbonyl and hydroxyl functional groups which act as a binding sites for Cu(II) ion. Adsorption kinetics of Cu(II) was tested by first order kinetics, Elovich and parabolic diffusion kinetic equations which shows that adsorption is a diffusion controlled process. The rate of adsorption was high at high adsorption temperature. Thermodynamic parameters like ΔH°, ΔS° and ΔG° were calculated from the kinetic data.

Kurzfassung

Es wurde die Adsorptionskinetik von Cu(II) aus wässriger Lösung an preiswertem, chemisch modifiziertem Sägemehl des Morus alba untersucht. Die Proben wurden mit Hilfe der FT-IR, EDS, BET-Oberfläche und der Zeta-Potentialtechnik charakterisiert. Die Oberflächen enthalten funktionelle Carbonyl- und Hydroxylgruppen, die Bindungsplätze für die Cu(II)-Ionen darstellen. Die Adsorptionskinetik wurde mit dem Erster-Ordnung- und dem Elovich-Modell sowie mit der parabolischen Diffusionsgleichung, die zeigt, dass die Adsorption ein diffusionskontrollierter Prozess ist, geprüft. Die Adsorptionsgeschwindigkeit was hoch bei hohen Temperaturen. Aus den kinetischen Daten wurden thermodynamische Größen wie ΔH°, ΔS° und ΔG° berechnet.


Dr. Sultan Alam, Assistant Professor, Department of Chemistry, University of Malakand, Chakdara, Dir, Pakistan, E-Mail:

Dr. Sultan Alam is Assistant Professor in Physical Chemistry, University of Malakand, at Chakdara, Dir (L), Pakistan. His research interest includes, conversion of low cost precursors into activated carbon like agricultural waste material, fast growing wood and animal bones, regeneration of industrial spent carbon, characterization of adsorbents by pH, moisture content, ash content, surface area (BET, DR, BJH, and Langmuir), pore size distribution, FTIR, XRD, SEM and EDS, surface chemistry at solid-liquid interface i.e. Activated carbon, Clays and Soil, removal of organic and in-organic pollutants from aqueous solutions by active adsorbents like activated carbon, clays and soil, breakthrough technique for the utilization of low cost adsorbents into industrial effluents treatments. Monitoring of drinking water quality/industrial effluents and its impacts on human life, exploration of soil contaminants, quantification of nutrients in the indigenous medicinal plants and its impact on the functional regulation of human body activities, determination of metals in the commercially available edible herbs and its therapeutic value, exploration of nutritional status of plants habitat and investigation of food contaminants.

Mr. Azmat Ullah is lecturer in Chemistry, Govt Post Graduate College Daggar Buner and is working in the research group of Dr. Sultan Alam. His field of specialization is surface chemistry.

Dr. Noorul Amin is Assistant Professor in AWK University, Mardan, Pakistan and currently working in the field of environmental chemistry.

Najeeb-ur-Rehman is Assistant Professor in Physical Chemistry at the University of Malakant, Khyber Pakhtunkhwa, Pakistan. The graduated at the University of Peshawar. This fields of interests are surface chemistry and interaction between water soluble polymers and charged surfactants.


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Received: 2011-12-19
Revised: 2012-03-04
Published Online: 2013-04-05
Published in Print: 2012-11-01

© 2012, Carl Hanser Publisher, Munich

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