caa a22 4500 46793052X CHVBK 20180406152942.0 cr unu---uuuuu 170328e20061201xx s 000 0 eng 10.1007/s10706-005-5560-6 doi (NATIONALLICENCE)springer-10.1007/s10706-005-5560-6 Adsorption of heavy metals in glacial till soil [Elektronische Daten] [Ashraf Al-Hamdan, Krishna Reddy] The charged sites on soil particles are important for the retention/adsorption of metals. Metallic counterions can neutralize the intrinsic charges on the surfaces of soil particles by forming complexes. In this study, efforts have been made to determine the effect of surface potential, pH, and ionic strength on the adsorption of four metal ions, hexavalent chromium Cr(VI), trivalent chromium Cr(III), nickel Ni(II) and cadmium Cd(II), in glacial till soil. Batch tests were performed to determine the effect of pH (2-12) and ionic strength (0.001-0.1M KCl) on zeta potential of the glacial till soil. The point of zero charge (pH PZC ) of glacial till was found to be 7.0±2.5. Surface charge experiments revealed the high buffering capacity of the glacial till. Batch adsorption experiments were conducted at natural pH (8.2) using various concentrations of selected metals. The adsorption data was described by the Freundlich adsorption model. Overall glacial till shows lower adsorption affinity to Cr(VI) as compared to cationic metals, Cr(III), Ni(II) and Cd(II). Springer, 2006 adsorption nationallicence clays nationallicence electrokinetics nationallicence heavy metals nationallicence remediation nationallicence soil nationallicence zeta potential nationallicence Al-Hamdan Ashraf Department of Civil and Environmental Engineering, University of Central Florida, 162450, 32816-2450, Orlando, Florida, USA aut Reddy Krishna Department of Civil and Materials Engineering, University of Illinois at Chicago, 842 West Taylor Street, 60607, Chicago, Illinois, USA aut Geotechnical & Geological Engineering Kluwer Academic Publishers 24/6(2006-12-01), 1679-1693 0960-3182 24:6<1679 2006 24 10706 https://doi.org/10.1007/s10706-005-5560-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10706-005-5560-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Al-Hamdan Ashraf Department of Civil and Environmental Engineering, University of Central Florida, 162450, 32816-2450, Orlando, Florida, USA aut NATIONALLICENCE 700 1- Reddy Krishna Department of Civil and Materials Engineering, University of Illinois at Chicago, 842 West Taylor Street, 60607, Chicago, Illinois, USA aut NATIONALLICENCE 773 0- Geotechnical & Geological Engineering Kluwer Academic Publishers 24/6(2006-12-01), 1679-1693 0960-3182 24:6<1679 2006 24 10706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer