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Co‐adsorption of Trichloroethylene and Arsenate by Iron‐Impregnated Granular Activated Carbon
Co‐adsorption of trichloroethylene (TCE) and arsenate [As(V)] was investigated using modified granular activated carbons (GAC): untreated, sodium hypochlorite‐treated (NaClO‐GAC), and NaClO with iron‐treated GAC (NaClO/Fe‐GAC). Batch experiments of single‐ [TCE or As(V)] and binary‐ [TCE and As(V)] components solutions are evaluated through Langmuir and Freundlich isotherm models and adsorption kinetic tests. In the single‐component system, the adsorption capacity of As(V) was increased by the NaClO‐GAC and the NaClO/Fe‐GAC. The untreated GAC showed a low adsorption capacity for As(V). Adsorption of TCE by the NaClO/Fe‐GAC was maximized, with an increased Freundlich constant. Removal of TCE in the binary‐component system was decreased 15% by the untreated GAC, and NaClO‐ and NaClO/Fe‐GAC showed similar efficiency to the single‐component system because of the different chemical status of the GAC surfaces. Results of the adsorption isotherms of As(V) in the binary‐component system were similar to adsorption isotherms of the single‐component system. The adsorption affinities of single‐ and binary‐component systems corresponded with electron transfer, competitive adsorption, and physicochemical properties.
Co‐adsorption of Trichloroethylene and Arsenate by Iron‐Impregnated Granular Activated Carbon
Co‐adsorption of trichloroethylene (TCE) and arsenate [As(V)] was investigated using modified granular activated carbons (GAC): untreated, sodium hypochlorite‐treated (NaClO‐GAC), and NaClO with iron‐treated GAC (NaClO/Fe‐GAC). Batch experiments of single‐ [TCE or As(V)] and binary‐ [TCE and As(V)] components solutions are evaluated through Langmuir and Freundlich isotherm models and adsorption kinetic tests. In the single‐component system, the adsorption capacity of As(V) was increased by the NaClO‐GAC and the NaClO/Fe‐GAC. The untreated GAC showed a low adsorption capacity for As(V). Adsorption of TCE by the NaClO/Fe‐GAC was maximized, with an increased Freundlich constant. Removal of TCE in the binary‐component system was decreased 15% by the untreated GAC, and NaClO‐ and NaClO/Fe‐GAC showed similar efficiency to the single‐component system because of the different chemical status of the GAC surfaces. Results of the adsorption isotherms of As(V) in the binary‐component system were similar to adsorption isotherms of the single‐component system. The adsorption affinities of single‐ and binary‐component systems corresponded with electron transfer, competitive adsorption, and physicochemical properties.
Co‐adsorption of Trichloroethylene and Arsenate by Iron‐Impregnated Granular Activated Carbon
Deng, Baolin (Autor:in) / Kim, Eun‐Sik (Autor:in)
Water Environment Research ; 88 ; 394-402
01.05.2016
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Adsorption of Arsenate by Nano Scaled Activated Carbon Modified by Iron and Manganese Oxides
| DOAJ | 2017
| Taylor & Francis Verlag | 2010