期刊
JOURNAL OF WATER SUPPLY RESEARCH AND TECHNOLOGY-AQUA
卷 65, 期 3, 页码 244-252出版社
IWA PUBLISHING
DOI: 10.2166/aqua.2016.089
关键词
adsorption; arsenic; bone char; isotherm; kinetics
资金
- Prairie View AAMP
- M University (PVAMU)
- Texas Engineering Experiment Station (TEES) National Science Foundation (NSF) ADVANCE-PAID grant
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.
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