Coagulation of turbid water by chitosan and alum

Diana Anne Bernard Dorai Raj, (2007) Coagulation of turbid water by chitosan and alum. Universiti Malaysia Sabah. (Unpublished)

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Abstract

Coagulation efficiency of a biopolymer (i.e. chitosan) was investigated at different coagulant dosage, initial turbidity, mixing time and pH conditions using kaolin suspension as the test water. For comparison, a similar experiment was carried out using alum as the coagulant. The final turbidity was measured in each experiment using a turbidity meter. The results showed that chitosan was a more effective coagulant at low dosage compared to alum. Efficiency of turbidity removal increases as mixing time increased while alum, efficiency was not effect significantly affected. Both alum and chitosan efficiency increased as initial turbidity increased until a certain specific optimum level. Chitosan showed higher efficiency in alkaline condition compared to alum. The optimum pH for chitosan was in the range between pH 7-8.

Item Type: Academic Exercise
Uncontrolled Keywords: coagulation, biopolymer, chitosan, initial turbidity, mixing time, pH, coagulant dosage, water, alum
Subjects: Q Science > QD Chemistry
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 20 Jun 2013 03:45
Last Modified: 23 Oct 2017 04:46
URI: http://eprints.ums.edu.my/id/eprint/6333

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