Palladium, silver, and zinc oxide nanoparticles loaded on activated carbon as adsorbent for removal of bromophenol red from aqueous solution
作者： Mehrorang Ghaedi , Maryam Ghayedi , Syamak Nasiri Kokhdan , Reza Sahraei , Ali Daneshfar
DOI: 10.1016/J.JIEC.2012.12.020
关键词:
摘要: Abstract The adsorption of bromophenol red (BPR) onto three adsorbents including palladium, silver and zinc oxide nanoparticles loaded on activated carbon (Pd-NP-AC, Ag-NP-AC ZnO-NP-AC) in a batch system has been studied the influence various parameters optimized. time removal BPR all adsorbent was investigated experimental data were analyzed by four kinetic models pseudo first second-order, Elovich intraparticle diffusion equations. Following fitting to these models, respective each model such as rate constants, equilibrium capacities correlation coefficients for based well known criterion their applicability judged. It seen that sufficiently described second-order equation addition interparticle model. at concentration dye fitted Langmuir, Freundlich, Tempkin, Dubinin, Radushkevich A single stage process efficient suitable using Langmuir isotherm with maximum 143 mg g −1 Pd-NP-AC, 250 mg g 200 mg g ZnO-NR-AC. Thermodynamic Δ G °, H S ° Pd-NP-AC calculated.
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