Yeoh, Kar Chuan (2007) Coagulation of turbid water using natural material: cactus. Universiti Malaysia Sabah. (Unpublished)
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Abstract
The ability of cactus (Opuntia ficus indica) as natural coagulant for treatment of turbid water was tested according to jar test. Kaolin was used to produce the synthetic turbid water. The experiment variables were coagulant dosage, initial turbidity value and pH. For comparison, a similar study was carried out using a conventional coagulant, aluminium sulphate. Coagulation using cactus attained a maximum of turbidity removal efficiency of 74.9% for initial turbidity of 60.5 NTU compared to 73.1% by alum. The optimum dosage for cactus and alum was 0.03g and 0.2g respectively. As the cactus dosage increased, turbidity removal efficiency dropped until 58.2% compared to alum which remained constant at about 72.2°/ö. As the initial turbidity increased, turbidity removal efficiency for cactus decreased but increased for alum. The optimum initial turbidity for both cactus and alum was 41 NTU and 81.5 NTU, respectively. Effect of pH varies for both alum and cactus. The optimum pH for cactus was 2 at 0.015g and 0.03g dosage while for alum is 6 at 0.2g dosage. As the pH increased, turbidity removal efficiency for cactus decreased but remained uncertain for alum.
| Item Type: | Academic Exercise |
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| Keyword: | Cactus, Opuntia ficus indica, Treatment of turbid water |
| Subjects: | Q Science > QK Botany > QK1-989 Botany > QK474.8-495 Spermatophyta. Phanerogams |
| Department: | SCHOOL > School of Science and Technology |
| Depositing User: | ADMIN ADMIN |
| Date Deposited: | 23 Mar 2011 11:25 |
| Last Modified: | 17 Oct 2017 13:46 |
| URI: | https://eprints.ums.edu.my/id/eprint/2233 |
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