Thermodynamic and kinetic studies for environmentaly friendly Ni(II) biosorption using waste pomace of olive oil factory |
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| Authors: | Yasar Nuhoglu Emine Malkoc |
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| Affiliation: | 1. Department of Food Technology & Biochemical Engineering, Jadavpur University, 188, Raja S. C. Mullick Road, Kolkata, 700032, India;2. Department of Biological Chemistry, Indian Association for the Cultivation of Science, 2A & B Raja S.C. Mullick Road, Kolkata, 700032, India;1. Department of Environmental Engineering, Faculty of Engineering and Architecture, Kastamonu University, 37100, Kastamonu, Turkey;2. Department of Forest Industrial Engineering, Faculty of Forestry, Kastamonu University, 37100, Kastamonu, Turkey;1. Department of Integrated Transport Technology and Environmental Protection, Maritime University of Szczecin, H. Pobo?nego St. 11, 70-507 Szczecin, Poland;2. Institute of Chemical and Environment Engineering, West Pomeranian University of Technology, Pu?askiego St. 10, 70-322 Szczecin, Poland;1. Dipartimento di Ingegneria Civile, Ambientale, Edile, del Territorio e di Chimica, Politecnico di Bari, Via E. Orabona, 4, 70125 Bari, Italy;2. Dipartimento di Chimica, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, 70125 Bari, Italy;3. Dipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, 70125 Bari, Italy |
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| Abstract: | The objective of this study is to assess the environmentaly friendly Ni(II) adsorption from synthetic wastewater using waste pomace of olive oil factory (WPOOF). Batch kinetic studies were performed in order to investigate the adsorbent and adsorbate dose, solution pH, agitating speed and temperature. The maximum Ni(II) adsorption was obtained at pH 4.0. The equilibrium nature of Ni(II) adsorption at different temperature was described by the Freundlich, Langmuir and Temkin isotherms. The equilibrium data fit well the Temkin and Langmuir isotherm. The monolayer adsorption capacities of WPOOF as obtained from Langmuir isotherm at 60 °C was found to be 14.80 mg/g. The adsorption mechanism was examined by the FTIR technique. The results of the thermodynamic investigations indicated that the adsorption reactions were spontaneous (ΔG < 0), slightly endothermic (ΔH > 0) and irreversible (ΔS > 0). The pseudo first-order, pseudo second-order, Elovich and intraparticle diffusion kinetic models were used to describe the kinetic data. |
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