Flocculation kinetics and dewatering studies of quaternized cellulose derived from oil palm empty fruit bunches

Autor: Safia Syazana Mohtar, Ahmad Mujahid Md Noor, Tengku Nur Zulaikha Tengku Malim Busu, Hanapi Mat, Nor Aida Yusoff, Norasikin Saman
Rok vydání: 2019
Předmět:
Zdroj: Korean Journal of Chemical Engineering. 36:669-677
ISSN: 1975-7220
0256-1115
Popis: Flocculation kinetics and sludge dewatering of kaolin suspension as influenced by various q-EFBC flocculant dosing were studied. In this study, 62.5mg L−1 q-EFBC exhibited the highest turbidity removal efficiency of 99.53±0.08%. The adsorption rate of kaolin towards 12.5mg L−1 to 112.5mg L−1 q-EFBC dosing increased rapidly for t 0.99 and the lowest standard deviation. The highest rate constant of particle aggregation and breakage was consistent with the highest rate constant of particle collision, which led to the highest turbidity removal at the optimal dosage. The rate-limiting steps in the flocculation process were particle collision and aggregation since their rate constant was lower than the other kinetic constants. The lower values of SRF and TTF of treated sludge as compared to the untreated one confirmed the improvement in the dewaterability characteristic. The lowest TTF (37.44±1.44 s) and SRF (1.49×1010 m kg−1) was observed for 62.5mg L−1 q-EFBC. The high turbidity removal and improved sludge dewaterability indicate the potential application of q-EFBC for water treatment.
Databáze: OpenAIRE
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