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Removal of phenol from aqueous phase by using neutralized red mud
Scopus
Toplam 169 atıf DOI
The objective of this study is to remove the phenol from aqueous solution by using the neutralized red mud in batch adsorption technique. The study was carried out as functions of contact time, pH, initial phenol concentration, red mud dosage and effect of salt addition. The experiments demonstrated that maximum phenol removal was obtained in a wide pH range of 1-9 and it takes 10 h 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. The influence of addition of salt on phenol removal depends on the relative affinity of the anions for the red mud surface and the relative concentrations of the anions. © 2006 Elsevier Inc. All rights reserved.
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Role of different bleaching earths for sunfl ower oil in a pilot plant bleaching system
Scopus
Havuzumuzda Open Access 12 atıf almış
The purpose of present study is to investigate the effi ciency of different kinds of Turkish commercial bleaching earth materials for changes in different colour pigment concentrations in neutralized sunfl ower oils. The bleaching experiments were performed in a pilot system under at stable vacuum (50 mmHg) and temperature (100°C) for 30 min. By examining the changes in chlorophyll, β-carotene and red colour, bleaching process parameters such as type and dosage of the bleaching material were optimised. The sorption characteristics of colour pigments were evaluated using common adsorption isotherms and Scatchard plot analysis. Ads-3 acid-activated earth material at 1% (w/w) per samples was found to be the most appropriate sorbent and the amount of sorbed pigments was calculated as 1.01x10-4 mmol/g ads. for chlorophyll, 1.15×10-3 mmol/g ads. for carotene and 1.70 red on Lovibond colour scale. The procedure indicated that this system can be easily adapted to the actual oil refi ning systems. © Copyright by Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences.
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Kurumlar (4)
Helvacizade Edible Oil Company
Konya, Turkey
Karamanoğlu Mehmetbey Üniversitesi
Karaman, Turkey
Necmettin Erbakan Üniversitesi
Meram, Turkey
Selçuk Üniversitesi
Selçuklu, Turkey