Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
583082 | Journal of Hazardous Materials | 2008 | 8 Pages |
Abstract
Sorption of arsenic from aqueous solution was carried out using polyvinyl pyrrolidone K25 coated cassava peel carbon (PVPCC). Batch experiments were conducted to determine the effect of contact time, initial concentration, pH and desorption. Batch sorption data's were fitted to Lagergren kinetic studies. Column studies were also conducted using PVPCC as adsorbent. The optimized flow rate of 2.5 mL minâ1 and bed height 10 cm were used to determine the effect of metal ion concentration on removal of As(V). BDST model was applied to calculate the adsorption capacity (N0) of column. The N0 value of 2.59 Ã 10â5, 4.21 Ã 10â5, 4.05 Ã 10â5, 4.26 Ã 10â5 and 3.2 Ã 10â5 mg gâ1 were obtained for 0.5, 1.0, 1.5, 2.0 and 2.5 mg Lâ1 of As(V), respectively. The batch sorption proved to be more efficient than the column sorption. The sorption of As(V) and the nature of the adsorbent was examined by Fourier transmission infrared spectroscopy (FTIR) and X-ray diffraction (XRD) studies, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Health and Safety
Authors
R. Selvakumar, S. Kavitha, M. Sathishkumar, K. Swaminathan,