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Removal of boron from aqueous solution by using neutralized red mud
Scopus
Toplam 142 atıf DOI
The adsorptive removal of boron from aqueous solution by using the neutralized red mud was studied in batch equilibration technique. The effects of pH, adsorbent dosage, initial boron concentration and contact time on the adsorption were investigated. The experiments demonstrated that boron removal was of a little fluctuation in pH range of 2-7 and it takes 20 min to attain equilibrium. The adsorption data was analyzed using the Langmuir and the Freundlich isotherm models and it was found that the Freundlich isotherm model represented the measured sorption data well. © 2006 Elsevier B.V. All rights reserved.
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Increasing the phenol adsorption capacity of neutralized red mud by application of acid activation procedure
Scopus
Havuzumuzda 53 atıf almış
The objective of this study was to investigate the removal of phenol from aqueous solution by using acid activated red mud in batch adsorption experiments. The study was carried out as functions of pH, contact time, activated red mud dosage and initial phenol concentration. It was found that the maximum removal was obtained at pH below 8 and the adsorption equilibrium time was 10 h. Adsorption was followed the pseudo second-order kinetic model. According to the coefficient of determination and non-linear regression analysis carried out by Chisquare test, the Langmuir isotherm better represented the adsorption data in comparison to the Freundlich isotherm. The phenol adsorption capacity of the activated red mud (8.156 mg/g) was found to be higher than that of the neutralized red mud (4.127 mg/g) at pH 6 and 25±1°C. Negative ΔG0 value (-22.692 kJ/mol) indicated that the adsorption of phenol onto the activated red mud was spontaneous and feasible process. © 2008 Elsevier B.V. All rights reserved.
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Kurumlar (1)
Selçuk Üniversitesi
Selçuklu, Turkey