caa a22 4500 463247272 CHVBK 20180405153329.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10086-007-0898-4 doi (NATIONALLICENCE)springer-10.1007/s10086-007-0898-4 Sorption of Cr(VI) on the wood of Japanese larch treated with concentrated sulfuric acid [Elektronische Daten] [Masakazu Aoyama, Shingo Saito, Masaaki Tagami] A carbonaceous sorbent was prepared from the wood of Japanese larch (Larix leptolepis) by dehydration with concentrated sulfuric acid in a 69% yield. The abilities of the sorbent to remove Cr(VI) from aqueous solutions were investigated. Research parameters included the initial solution pH, temperature, and initial concentration of Cr(VI) in solution. The removal of Cr(VI) was highly solution pH dependent and was mainly governed by physicochemical sorption under weak acidic conditions. The equilibrium data fit well in the Langmuir isotherm model. The Langmuir constants were calculated at different temperatures, and the sorption capacity increased with rising temperature, indicating the endothermic nature of the Cr(VI) sorption onto the sorbent. The desorption experiments suggest that the Cr(VI) sorption is generally irreversible, owing to strong interaction of HCrO 4 − with the active sites of the sorbent. The Japan Wood Research Society, 2007 Sorption of Cr(VI) nationallicence Langmuir isotherm nationallicence Japanese larch wood nationallicence Larix leptolepis nationallicence Dehydration with concentrated sulfuric acid nationallicence Aoyama Masakazu Laboratory of Bioresource Science, Department of Applied and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, 090-8507, Kitami, Hokkaido, Japan aut Saito Shingo Laboratory of Bioresource Science, Department of Applied and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, 090-8507, Kitami, Hokkaido, Japan aut Tagami Masaaki Laboratory of Bioresource Science, Department of Applied and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, 090-8507, Kitami, Hokkaido, Japan aut Journal of Wood Science Springer-Verlag 53/6(2007-12-01), 545-549 1435-0211 53:6<545 2007 53 10086 https://doi.org/10.1007/s10086-007-0898-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-007-0898-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aoyama Masakazu Laboratory of Bioresource Science, Department of Applied and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, 090-8507, Kitami, Hokkaido, Japan aut NATIONALLICENCE 700 1- Saito Shingo Laboratory of Bioresource Science, Department of Applied and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, 090-8507, Kitami, Hokkaido, Japan aut NATIONALLICENCE 700 1- Tagami Masaaki Laboratory of Bioresource Science, Department of Applied and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, 090-8507, Kitami, Hokkaido, Japan aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/6(2007-12-01), 545-549 1435-0211 53:6<545 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer