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Korean Journal of Chemical Engineering, Vol.32, No.2, 342-349, 2015
Equilibrium, kinetic and mechanism studies on the biosorption of Cu2+ and Ni2+ by sulfur-modified bamboo powder
Two biosorbents were prepared using bamboo powder modified with mercaptoacetic acid and carbon disulfide, which exhibits strong adsorption properties for Cu2+ and Ni2+. The obtained materials were characterized by FTIR. Maximum adsorption for both metals was found to occur around pH 5.0-6.5. The kinetic data followed the pseudo-second-order model. The maximum adsorption capacities of Cu2+ and Ni2+ on mercaptoacetic acid modified bamboo powder determined from Langmuir isotherm were 103.97mg g-1 and 61.35mg g-1, respectively. While on
carbon disulfide modified bamboo powder were 128.21mg g-1 and 56.82mg g-1, respectively. The adsorption mechanism analysis revealed that the most possible adsorption mode of Cu2+ was coordination, and Ni2+ was ion exchange. The obtained adsorbents could effectively remove Cu2+ and Ni2+ from industrial electroplating wastewater and could be used repeatedly for more than five cycles.
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[Cited By]
- Lee EH, Park RS, Kim H, Park SH, Jung SC, Jeon JK, Kim SC, Park YK, Journal of Industrial and Engineering Chemistry, 37, 18, 2016
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