Muhammad, Imran-Shaukat and Nur Rafikah, Rosli and Rafeah, Wahi and Sharifah Mona, Abd Aziz Abdullah and Zainab, Ngaini (2021) Chemically Modified Coconut Shell Biochar for Removal of Heavy Metals from Aqueous Solution. Defect and Diffusion Forum, 411 (2021). pp. 79-91. ISSN 1662-9507
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Abstract
In this study, coconut shells were converted into biochar via pyrolysis and chemically modified via an acid-base treatment to enrich its adsorption capabilities. Batch experiments were carried out to analyze the adsorption potential of the modified coconut shell (MCSC) for removal of chromium, nickel, and copper from aqueous solution. The chemical modification increased the surface area of MCSC to 185.712 m2 /g. Batch adsorption study using MCSC resulted in 99% removal of copper, 95% (nickel), and 39% (chromium). The adsorption of studied metal ions fitted well with Langmuir isotherm, showing a monolayer adsorption process. A kinetic analysis showed that all the samples match a strong correlation coefficient in pseudo-second-order (R2 >0.95), indicating the occurrence of a chemical adsorption process.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | adsorption, biochar, chemical modification, toxic heavy metals, wastewater treatment, UNIMAS, University, Borneo, Malaysia, Sarawak, Kuching, Samarahan, IPTA, education, Universiti Malaysia Sarawak |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology Faculties, Institutes, Centres > Faculty of Resource Science and Technology |
| Depositing User: | Wahi |
| Date Deposited: | 09 Sep 2021 07:12 |
| Last Modified: | 09 Sep 2021 07:12 |
| URI: | http://ir.unimas.my/id/eprint/36051 |
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