caa a22 4500 469110759 CHVBK 20180323133110.0 cr unu---uuuuu 170328e19920201xx s 000 0 eng 10.1007/BF02039779 doi (NATIONALLICENCE)springer-10.1007/BF02039779 Kinetic study of Cr(VI) sorption on MnO2 [Elektronische Daten] [M. Bhutani, A. Mitra, Ramesh Kumari] The kinetics of adsorption of chromate ions has been investigated radiometrically over a wide range of concentration of chromate ions (10−6-10−2M) and temperature (303-323 K). The kinetics of the process follows essentially a first order rate law with respect to adsorptive concentration and obeys the Freundlich adsorption isotherm in the concentration range studied. In addition, the kinetics of desorption of the preadsorbed species also follows a first order rate law and the activation energy for desorption is greater than that of the adsorption process. On the basis of an adsorption kinetic study, the thermodynamic parameters have been calculated. Infrared spectroscopy has shown the chemical interaction of chromate ions on the surface of MnO2. Akadémiai Kiadó, 1992 Bhutani M. Department of Chemistry, I. I. T., Hauz Khas, 110 016, New Delhi, (India) aut Mitra A. Department of Chemistry, I. I. T., Hauz Khas, 110 016, New Delhi, (India) aut Kumari Ramesh Department of Chemistry, I. I. T., Hauz Khas, 110 016, New Delhi, (India) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 157/1(1992-02-01), 75-86 0236-5731 157:1<75 1992 157 10967 https://doi.org/10.1007/BF02039779 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02039779 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bhutani M. Department of Chemistry, I. I. T., Hauz Khas, 110 016, New Delhi, (India) aut NATIONALLICENCE 700 1- Mitra A. Department of Chemistry, I. I. T., Hauz Khas, 110 016, New Delhi, (India) aut NATIONALLICENCE 700 1- Kumari Ramesh Department of Chemistry, I. I. T., Hauz Khas, 110 016, New Delhi, (India) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 157/1(1992-02-01), 75-86 0236-5731 157:1<75 1992 157 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer