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Magnesium incorporated bentonite clay for defluoridation of drinking water
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SYSNO ASEP 0356137 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Magnesium incorporated bentonite clay for defluoridation of drinking water Tvůrce(i) Thakre, D. (IN)
Rayalu, S. (IN)
Kawade, R. (IN)
Meshram, S. (IN)
Šubrt, Jan (UACH-T) SAI, RID
Labhsetwar, N. (IN)Zdroj.dok. Journal of Hazardous Materials. - : Elsevier - ISSN 0304-3894
Roč. 180, 1-3 (2010), s. 122-130Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova adsorption ; bentonite ; fluoride removal Vědní obor RIV CA - Anorganická chemie CEZ AV0Z40320502 - UACH-T (2005-2011) UT WOS 000279459600013 DOI 10.1016/j.jhazmat.2010.04.001 Anotace Low cost bentonite clay was chemically modified using magnesium chloride in order to enhance its fluoride removal capacity. The magnesium incorporated bentonite (MB) was characterized by using XRD and SEM techniques. Batch adsorption experiments were conducted to study and optimize various operational parameters such as adsorbent dose, contact time, pH, effect of co-ions and initial fluoride concentration. It was observed that the MB works effectively over wide range of pH and showed a maximum fluoride removal capacity of 2.26 mg g(-1) at an initial fluoride concentration of 5 mg L-1, which is much better than the unmodified bentonite. The experimental data fitted well into Langmuir adsorption isotherm and follows pseudo-first-order kinetics. Thermodynamic study suggests that fluoride adsorption on MB is reasonably spontaneous and an endothermic process. MB showed significantly high fluoride removal in synthetic water as compared to field water. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2011
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