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Preparation of Quaternized Lignin Derived from Oil Palm Empty Fruit Bunches and its Flocculation Properties

Md. Noor, Ahmad Mujahid and Mohtar, Safia Syazana and Saman, Norasikin and Tengku Malim Busu, Tengku Nur Zulaikha and Shaari, Norsalliana and Yusoff, Nor Aida and Mat, Hanapi (2019) Preparation of Quaternized Lignin Derived from Oil Palm Empty Fruit Bunches and its Flocculation Properties. Journal of Wood Chemistry and Technology, 39 (6). pp. 399-420. ISSN 0277-3813

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Official URL: http://dx.doi.org/10.1080/02773813.2019.1636823


Quaternized lignin-based flocculant (QL) was prepared by a single-step reaction of an extracted lignin (EL) derived from oil palm empty fruit bunches (OPEFB) with 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHPTAC) under alkaline condition. The performance of QLs was studied for various β values (molar ratios of CHPTAC to phenylpropanoid unit of lignin), flocculant dosages, pH values, kaolin concentrations, slow mixing rates and sedimentation times. The QL10 achieved the highest turbidity removal efficiency (εt) with increasing flocculant dosage, pH and kaolin concentration to the optimal conditions of 5 mg L−1, pH 7 and 1000 mg L−1, and required 20 min of sedimentation time at all the mixing rates tested. The flocculation kinetics agreed well with the particle collision model. The QL10 has good sludge dewatering properties compared to the alum. It also showed encouraging results in water quality analysis for sewage wastewater flocculation in comparison to that of the alum. This indicates the potential application of QL in treating water and wastewater.

Item Type:Article
Uncontrolled Keywords:flocculation, kinetics study
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:87468
Deposited By: Widya Wahid
Deposited On:08 Nov 2020 12:00
Last Modified:08 Nov 2020 12:00

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