Removal of Boron from Wastewater of Geothermal Power Plant by Selective Ion-Exchange Resins. II. Column Sorption–Elution Studies

Abstract

Abstract Column sorption–elution studies for boron removal were performed using N-glucamine-type chelating ion-exchange resins Diaion CRB 02 Purolite S 108. The breakthrough curves were obtained as a function of resin type and feed flow rate. Boron was effectively removed from the wastewater of Kizildere, Turkey, geothermal power plant by passing it through the resins Diaion CRB 02 and Purolite S 108 at a space velocity of 25 bed volumes per hour. The boron on the resins was quantitatively eluted with 0.25 M H2SO4 solution. The resin Diaion CRB 02 was used to study the recycle use of resin for boron removal from the wastewater of Kizildere geothermal power plant. The capacity of Diaion CRB 02 remained constant after three sorption–elution–washing–regeneration cycles. Keywords: BoronIon-exchangeChelating resinWater pollutionWater treatmentGeothermal wastewater ACKNOWLEDGMENTS The experimental work reported here was performed at Avicenne Project Laboratory of the Chemical Engineering Department, Ege University. We are grateful to Mitsubishi Chemical Co. (Yokohama, Japan) and Purolite International Ltd. (Pontyclun, UK and Milan, Italy), and Sel Dis Ticaret (Istanbul, Turkey) for the kind supply of resin samples. We wish to thank Dr. M. Yildiz, Manager of MTA Aegean Region, for his kind support for M.B. to carry out this research work. We wish to thank Dr K. Ooi, Shikoku National Industrial Research Institute, Japan, for helpful discussions and literature. The authors acknowledge the assistance of Mr M. Akcay and Ms. Saniye Yayli during the laboratory work. In addition, helpful comments and suggestions from the reviewers are gratefully acknowledged.