Removal and recovery of heavy metals from aqueous solution using Ulmus carpinifolia and Fraxinus excelsior tree leaves

Journal of Hazardous Materials
Mohammad Reza SangiMorteza Ghorbandoost

Abstract

Ulmus carpinifolia and Fraxinus excelsior tree leaves, which are in great supply in Iran, were evaluated for removal of Pb(II), Cd(II) and Cu(II) from aqueous solution. Maximum biosorption capacities for U. carpinifolia and F. excelsior were measured as 201.1, 172.0 mg/g for Pb(II), 80.0, 67.2 mg/g for Cd(II) and 69.5, 33.1 mg/g for Cu(II), respectively. For both sorbents the most effective pH range was found to be 2-5 for Pb(II), 3-5 for Cd(II) and 4-5 for Cu(II). Metal ion biosorption increased as the ratio of metal solution to the biomass quantity decreased. Conversely, biosorption/g biosorbent decreased as the quantity of biomass increased. The biosorption of metal ions increased as the initial metal concentration increased. Biosorption capacities of metal ions were in the following order: Pb(II)>Cd(II)>Cu(II). The equilibrium data for Pb(II) and Cu(II) best fit the Langmuir adsorption isotherm model. Kinetic studies showed that the biosorption rates could be described by a second-order expression. Both the sorbents could be regenerated using 0.2 M HCl during repeated biosorption-desorption cycles with no loss in the efficiency of the Cu(II) removal observed. Biosorption of Pb(II), Cd(II) and Cu(II) was investigated in the ...Continue Reading

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Citations

May 12, 2009·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Gholamhassan AzimiSara Ebrahimi
Jan 13, 2010·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Javad ZolgharneinS Norollah Mousavi
Mar 26, 2010·Bioresource Technology·Liuchun ZhengCongqiang Liu
Jun 12, 2009·Journal of Environmental Management·Feng Xiao, Ju-Chang Howard Huang
Jan 17, 2009·Journal of Hazardous Materials·Suleman QaiserMuhammad Umar
Jan 10, 2020·International Journal of Phytoremediation·Muhammad Mahmood-Ul-HassanRizwan Ahmad
Jul 28, 2012·Water Environment Research : a Research Publication of the Water Environment Federation·Jiuzhou DaiHeng Xu
Jan 1, 2012·Journal of Radioanalytical and Nuclear Chemistry·H B YangY C Lin
Jan 1, 2014·Applied and Environmental Soil Science·Sara Asselin, Jani C Ingram

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