Calcium alginate immobilized TiO2/ZnO beads for the removal of chromium

Shaminie, a/p Ramigam (2015) Calcium alginate immobilized TiO2/ZnO beads for the removal of chromium. [Final Year Project Report] (Unpublished)

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Abstract

Heavy metal contamination in water necessitates exploration of various water treatment technologies. Semiconductor based photocatalysis was studied as a possible mechanism for chromium (Cr) removal. In this study, the calcium alginate immobilized TiO2/ZnO beads were used to remove the Cr from water. The calcium alginate immobilized TiO2/ZnO beads were prepared by mixing the sodium alginate solution and hybrid photocatalysts, titanium dioxide (TiO2) and zinc oxide (ZnO). The calcium alginate beads showed better removal efficiency of Cr in photocatalysis compared to adsorption. The optimum pH for effective Cr removal is pH ~5 which gave about 98.5% of removal efficiency. The removal efficiency of the immobilized photocatalyst was found to be lower than the suspended photocatalyst. However, the immobilized photocatalyst has an advantage in term of reusability which makes them to be an environmentally friendly and cost-effective photocatalyst.

Item Type: Final Year Project Report
Additional Information: Project Report (B.Sc.) -- Universiti Malaysia Sarawak, 2015.
Uncontrolled Keywords: Chromium removal, immobilization, photocatalysis, titanium dioxide, zinc oxide, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, undergraduate, research, Universiti Malaysia Sarawak
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 11 Feb 2016 02:13
Last Modified: 11 Feb 2016 02:13
URI: http://ir.unimas.my/id/eprint/10504

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