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Removal of boron from aqueous solutions by batch adsorption on calcined alunite using experimental design.
J Hazard Mater. 2009 Apr 15; 163(1):308-14.JH

Abstract

In the present paper, boron removal from aqueous solutions by batch adsorption was investigated and 2(3) full factorial design was applied. Calcined alunite was used as adsorbent. In the study, three parameters affected the performance and two levels of these parameters were investigated. The chosen parameters were temperature (25 and 45 degrees C, respectively), pH (3 and 10) and mass of adsorbent (0.5 g adsorbent per 25 mL solution and 1g adsorbent per 25 mL solution). The significance of the effects was checked by analysis of variance (statistical software, MINITAB-Version 15). The model-function equation for boron adsorption on calcined alunite was obtained. The results showed that temperature, pH and mass of adsorbent affected boron removal by adsorption. Boron removal increased with increasing pH and adsorbent dosage, but decreased with increasing temperature. The optimum conditions were found as pH 10, adsorbent dosage=1g of calcined alunite per 25 mL solution and temperature=25 degrees C by using factorial design. In addition, the effects of parameters such as calcination temperature, pH, temperature, adsorbent dosage and initial boron concentration on boron removal were investigated. The adsorption isotherm studies were also performed. Maximum adsorbent capacity (q(0)) was calculated as 3.39 mg/g. Thermodynamic parameters such as change in free energy (DeltaG degrees), enthalpy (DeltaH degrees) and entropy (DeltaS degrees) were also determined.

Authors+Show Affiliations

Department of Chemical Engineering, Faculty of Engineering and Architecture, Eskişehir Osmangazi University, 26480, Meşelik, Eskişehir, Turkey. dbayar@ogu.edu.tr

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18675514

Citation

Kavak, Duygu. "Removal of Boron From Aqueous Solutions By Batch Adsorption On Calcined Alunite Using Experimental Design." Journal of Hazardous Materials, vol. 163, no. 1, 2009, pp. 308-14.
Kavak D. Removal of boron from aqueous solutions by batch adsorption on calcined alunite using experimental design. J Hazard Mater. 2009;163(1):308-14.
Kavak, D. (2009). Removal of boron from aqueous solutions by batch adsorption on calcined alunite using experimental design. Journal of Hazardous Materials, 163(1), 308-14. https://doi.org/10.1016/j.jhazmat.2008.06.093
Kavak D. Removal of Boron From Aqueous Solutions By Batch Adsorption On Calcined Alunite Using Experimental Design. J Hazard Mater. 2009 Apr 15;163(1):308-14. PubMed PMID: 18675514.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of boron from aqueous solutions by batch adsorption on calcined alunite using experimental design. A1 - Kavak,Duygu, Y1 - 2008/07/03/ PY - 2007/12/08/received PY - 2008/04/20/revised PY - 2008/06/24/accepted PY - 2008/8/5/pubmed PY - 2009/4/3/medline PY - 2008/8/5/entrez SP - 308 EP - 14 JF - Journal of hazardous materials JO - J Hazard Mater VL - 163 IS - 1 N2 - In the present paper, boron removal from aqueous solutions by batch adsorption was investigated and 2(3) full factorial design was applied. Calcined alunite was used as adsorbent. In the study, three parameters affected the performance and two levels of these parameters were investigated. The chosen parameters were temperature (25 and 45 degrees C, respectively), pH (3 and 10) and mass of adsorbent (0.5 g adsorbent per 25 mL solution and 1g adsorbent per 25 mL solution). The significance of the effects was checked by analysis of variance (statistical software, MINITAB-Version 15). The model-function equation for boron adsorption on calcined alunite was obtained. The results showed that temperature, pH and mass of adsorbent affected boron removal by adsorption. Boron removal increased with increasing pH and adsorbent dosage, but decreased with increasing temperature. The optimum conditions were found as pH 10, adsorbent dosage=1g of calcined alunite per 25 mL solution and temperature=25 degrees C by using factorial design. In addition, the effects of parameters such as calcination temperature, pH, temperature, adsorbent dosage and initial boron concentration on boron removal were investigated. The adsorption isotherm studies were also performed. Maximum adsorbent capacity (q(0)) was calculated as 3.39 mg/g. Thermodynamic parameters such as change in free energy (DeltaG degrees), enthalpy (DeltaH degrees) and entropy (DeltaS degrees) were also determined. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18675514/Removal_of_boron_from_aqueous_solutions_by_batch_adsorption_on_calcined_alunite_using_experimental_design_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)00993-X DB - PRIME DP - Unbound Medicine ER -