caa a22 4500 606169903 CHVBK 20210128100714.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10098-014-0860-2 doi (NATIONALLICENCE)springer-10.1007/s10098-014-0860-2 Removal of copper(II) and chromium(VI) from aqueous solution using sorghum roots ( S. bicolor ): a kinetic and thermodynamic study [Elektronische Daten] [Sudesh Choudhary, Varsha Goyal, Seema Singh] Biosorption of toxic metal ions from industrial effluents using different plant parts is an important branch of environmental chemistry. Biosorption of copper(II) and chromium(VI) ions from aqueous solution onto sorghum root (SR) powder have been investigated under batch mode. The optimum pH and temperature for biosorption of both the metals was found to be 2 and 20°C, respectively. The maximum biosorption capacity q e for Cu(II) and Cr(VI) is 18.6 and 18.39mg/g, respectively. The Langmuir model gave a better fit than other two models. The kinetic studies indicated that the biosorption process of the metal ions followed well pseudo-second-order model. The thermodynamic parameters were also calculated and the values indicated that the biosorption process was exothermic, spontaneous, and feasible in nature. Desorption experiments with 1M HCl and 1M HNO3 inferred the reusability of biomass. The results showed that SRs have excellent adsorption properties and thus can be used as an effective and low cost biosorbent for the removal of Cu(II) and Cr(VI) ions from aqueous solution. Springer-Verlag Berlin Heidelberg, 2014 Biosorption nationallicence Sorghum root powder nationallicence Chromium(VI) nationallicence Copper(II) nationallicence Langmuir isotherm model nationallicence Desorption nationallicence Choudhary Sudesh The IIS University, 302020, Jaipur, India aut Goyal Varsha The IIS University, 302020, Jaipur, India aut Singh Seema Rajasthan College of Engineering for Women, 302026, Jaipur, India aut Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/4(2015-04-01), 1039-1051 1618-954X 17:4<1039 2015 17 10098 https://doi.org/10.1007/s10098-014-0860-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10098-014-0860-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Choudhary Sudesh The IIS University, 302020, Jaipur, India aut NATIONALLICENCE 700 1- Goyal Varsha The IIS University, 302020, Jaipur, India aut NATIONALLICENCE 700 1- Singh Seema Rajasthan College of Engineering for Women, 302026, Jaipur, India aut NATIONALLICENCE 773 0- Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/4(2015-04-01), 1039-1051 1618-954X 17:4<1039 2015 17 10098