View : 223 Download: 0
Effect of Oxide Presence in Activated Carbon on Arsenic Removal
- Title
- Effect of Oxide Presence in Activated Carbon on Arsenic Removal
- Authors
- Vong T.; Phat K.; Lee S.; Kang S.; Oh J.
- Ewha Authors
- 오진환
- SCOPUS Author ID
- 오진환
- Issue Date
- 2023
- Journal Title
- Environment and Natural Resources Journal
- ISSN
- 1686-5456
- Citation
- Environment and Natural Resources Journal vol. 21, no. 4, pp. 345 - 357
- Keywords
- Activated carbon; Adsorbent; Arsenic removal; Cambodia; Nano oxide particles; SDDC; Spectrophotometry
- Publisher
- Faculty of Environment and Resource Studies,Mahidol University
- Indexed
- SCOPUS
- Document Type
- Article
- Abstract
- This study investigated the effect of oxides on the removal of As when present in simple mixtures with granular activated carbon (GAC) particles. The performance of these mixtures was compared with other reported GAC-based adsorbents. A standard curve for ultraviolet adsorption vs. As concentration was obtained using the silver diethyldithiocarbamate (SDDC) method to evaluate various samples. A preliminary study was carried out to find the optimal conditions for experiments. For 50 mL samples with 2.35 ppm As, the optimal values of pH, adsorption time, and amount of adsorbent were pH 7, 30 min, and 50 mg, respectively. The ratio between the amount of adsorbent and well water in this study showed a superior As adsorption capacity (1 g/L, 2.1 mg/g) compared to similar adsorbents reported previously (12.5 g/L, 1.0-1.4 mg/g). Among the adsorbents, KOH-treated AC-Mn3O4 exhibited the best performance in As removal with an efficiency of ~95%. The oxide particles had a synergistic effect with GAC on As removal. This was primarily due to the change in the potential of partially agglomerated nano Mn3O4 particles on the ACK surface. The influence of the surface area of the adsorbents was not pronounced. All results were explained in terms of microstructure, specific surface area, and zeta potential. This finding could be extended to other activated carbons (AC) obtained from different sources. © 2023, Faculty of Environment and Resource Studies,Mahidol University. All rights reserved.
- DOI
- 10.32526/ennrj/21/20230066
- Appears in Collections:
- 국제대학원 > 국제학과 > Journal papers
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML