JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | |
Batch and Fixed-Bed Column Adsorption of Cd(II) from Aqueous Solution onto Oxidized Bead-Shaped Activated Carbon | |
Motoi Machida2  Fumio Imazeki1  Kotaku Takeuchi2  Yoshimasa Amano2  | |
[1] Safety and Health Organization, Chiba University;Graduate School of Engineering, Chiba University | |
关键词: Activated Carbon; Bed Column; Heavy Metal Adsorption; Oxidation; Surface Acidic Groups; | |
DOI : 10.1252/jcej.14we187 | |
来源: Maruzen Company Ltd | |
【 摘 要 】
References(8)Cited-By(1)Batch and column adsorption of divalent cadmium ions from aqueous solution using oxidized activated carbon (OAC) was investigated. Commercially available bead-shaped activated carbon (BAC) was oxidized with ammonium persulfate, and Cd(II) adsorption experiments were performed in batch and flow systems. The total amount of Cd(II) adsorbed in the flow system was 1.7 mmol/g, which was asymptotically equal to the maximum amount adsorbed in the batch system. Regeneration of the adsorbent was evaluated via Cd(II) desorption from OAC using 0.1 M nitric acid. The total Cd(II) desorbed was approximately 1.9 mmol/g, which was nearly equivalent to the total Cd(II) adsorbed in the flow system. The amount of Cd(II) adsorbed using regenerated OAC in the 2nd-cycle was not significantly different from that adsorbed in the 1st-cycle. These results imply that OAC is prospectively reusable for Cd(II) adsorption applications.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201912080697216ZK.pdf | 19KB | download |