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Preparation of Quaternized Lignin Derived from Oil Palm Empty Fruit Bunches and its Flocculation Properties
Journal of Wood Chemistry and Technology ( IF 2 ) Pub Date : 2019-07-15 , DOI: 10.1080/02773813.2019.1636823 Ahmad Mujahid Md Noor 1 , Safia Syazana Mohtar 1 , Norasikin Saman 1 , Tengku Nur Zulaikha Tengku Malim Busu 1 , Norsalliana Shaari 1 , Nor Aida Yusoff 2 , Hanapi Mat 1, 3
Journal of Wood Chemistry and Technology ( IF 2 ) Pub Date : 2019-07-15 , DOI: 10.1080/02773813.2019.1636823 Ahmad Mujahid Md Noor 1 , Safia Syazana Mohtar 1 , Norasikin Saman 1 , Tengku Nur Zulaikha Tengku Malim Busu 1 , Norsalliana Shaari 1 , Nor Aida Yusoff 2 , Hanapi Mat 1, 3
Affiliation
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.
中文翻译:
油棕空果串季铵化木质素的制备及其絮凝性能
季铵化木质素基絮凝剂 (QL) 是通过从油棕空果串 (OPEFB) 提取的木质素 (EL) 与 3-氯-2-羟丙基三甲基氯化铵 (CHPTAC) 在碱性条件下一步反应制备的。研究了各种 β 值(CHPTAC 与木质素苯丙烷单位的摩尔比)、絮凝剂剂量、pH 值、高岭土浓度、缓慢混合速率和沉降时间的 QL 性能。随着絮凝剂用量、pH 值和高岭土浓度增加至 5 mg L-1、pH 7 和 1000 mg L-1 的最佳条件,QL10 实现了最高的浊度去除效率 (εt),并且在所有条件下都需要 20 分钟的沉降时间。混合率测试。絮凝动力学与粒子碰撞模型非常吻合。与明矾相比,QL10 具有良好的污泥脱水性能。与明矾相比,它还在污水废水絮凝的水质分析中显示出令人鼓舞的结果。这表明 QL 在处理水和废水方面的潜在应用。
更新日期:2019-07-15
中文翻译:
油棕空果串季铵化木质素的制备及其絮凝性能
季铵化木质素基絮凝剂 (QL) 是通过从油棕空果串 (OPEFB) 提取的木质素 (EL) 与 3-氯-2-羟丙基三甲基氯化铵 (CHPTAC) 在碱性条件下一步反应制备的。研究了各种 β 值(CHPTAC 与木质素苯丙烷单位的摩尔比)、絮凝剂剂量、pH 值、高岭土浓度、缓慢混合速率和沉降时间的 QL 性能。随着絮凝剂用量、pH 值和高岭土浓度增加至 5 mg L-1、pH 7 和 1000 mg L-1 的最佳条件,QL10 实现了最高的浊度去除效率 (εt),并且在所有条件下都需要 20 分钟的沉降时间。混合率测试。絮凝动力学与粒子碰撞模型非常吻合。与明矾相比,QL10 具有良好的污泥脱水性能。与明矾相比,它还在污水废水絮凝的水质分析中显示出令人鼓舞的结果。这表明 QL 在处理水和废水方面的潜在应用。