The As(V) adsorption onto bone char was investigated as a function of bone char dosage, pH and contact time in batch tests. The initial As(V) concentrations were varied from 0.1 to 1 mg/L to evaluate the adsorption kinetics and isotherm. The As(V) concentrations were analyzed using a graphite furnace atomic absorption spectrophotometer. The highest As(V) removal was found to be 62% after 3 d using 3 g bone char at a pH level of 4.0 for 0.5 mg/L As(V) concentration. The maximum adsorption capacity was 0.13 for 1 mg/L As(V) concentration. A Langmuir isotherm and second order adsorption kinetics were observed for As(V) adsorption.
Adsorption isotherm and kinetic studies of As(V) removal from aqueous solution using cattle bone char
Shamim A. Begum, A. H. M. Golam Hyder, Nader Vahdat; Adsorption isotherm and kinetic studies of As(V) removal from aqueous solution using cattle bone char. Journal of Water Supply: Research and Technology-Aqua 12 May 2016; 65 (3): 244–252. doi: https://doi.org/10.2166/aqua.2016.089
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