Tan, Tee How and Mo, Kim Hung and Lai, Sai Hin and Ling, Tung-Chai (2022) Investigation on the copper ion removal potential of a facile-fabricated foamed geopolymer sphere for wastewater remediation. Cleaner Materials, 4. ISSN 2772-3976, DOI https://doi.org/10.1016/j.clema.2022.100088.
Full text not available from this repository.Abstract
Heavy metal contamination is regarded as one of the most serious hazards to the environment and living organism. The scenario is exacerbating especially due to the continuous development. Therefore, the goal of this study is to examine the copper ion removal potential of a facile-fabricated foamed geopolymer sphere. The foamed geopolymer sphere is synthesized via direct moulding method, using locally available materials of fly ash and calcined kaolin as the starting materials. The foamed geopolymer sphere is beneficial in terms of the ease of use where it can be used in packed bed system directly and the retrieval process upon exhausted is much simpler. Due to the plentiful binding sites created by foaming of the geopolymer sphere, the copper ion removal efficiency increases from 47.5 to 92.8 and the removal capacity improves by six times. pH 5 is identified to be the best pH for copper ion removal utilizing the foamed geopolymer sphere. The maximum copper ion removal capacity found experimentally is 37.9 mg/g, which is satisfactory compared to the foamed geopolymer spheres prepared via suspension and solidification. Meanwhile, increasing the dosage of the foamed geopolymer sphere can increase the foamed geopolymer sphere's removal ability when concerning high copper ion concentration. Pseudo second-order kinetic and Langmuir isotherm models are found to describe well the adsorption process. © 2022 The Authors
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya, Malaysia, YTL Cement Berhad, Ministry of Higher Education, Malaysia [Grant No:FRGS/1/2018/TK06/UM/02/1] |
| Uncontrolled Keywords: | Adsorbent; Copper removal; Foamed geopolymer; Heavy metal; Sphere; Wastewater remediation |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 24 Oct 2023 07:15 |
| Last Modified: | 24 Oct 2023 07:15 |
| URI: | http://eprints.um.edu.my/id/eprint/43493 |
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