Optimization of coag-flocculation processes of a newly synthesized quaternized oil palm empty fruit bunch cellulose by response surface methodology toward drinking water treatment process application

• Main Authors: Mohtar, S. S., Tengku Malim Busu, T. N. Z., Md. Noor, A. M., Shaari, N., Yusoff, N. A., Che Yunus, M. A., Mat, H.
• Format: Article
• Published: Springer Verlag 2017
• Subjects: TP Chemical technology
• Online Access: http://eprints.utm.my/id/eprint/75928/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-85008670819&doi=10.1007%2fs10098-016-1221-0&partnerID=40&md5=05c25a1e82885b5f3f657a14755584a9

An optimization of coagulation and flocculation of kaolin suspension by a newly synthesized quaternized oil palm empty fruit bunch cellulose denoted as a 9QC was investigated using the central composite design of the response surface methodology. The influences of coag-flocculant dosage, pH, and kaolin suspension on turbidity removal efficiency and sludge volume index responses were studied and assessed according to a 23full factorial design. The developed quadratic models revealed that the overall optimum values to obtain the highest performance of the responses were 62.5�mg/L of coag-flocculant dosage, pH 7, and 1400�mg/L of kaolin concentration. The predicted optimum responses were found to be in close proximity to the observed responses. The coag-flocculating of river water using 9QC carried out at the optimum values showed encouraging results as compared to alum which is commonly used in drinking water treatment process.