Chemical Sciences Programme, School of Distance Education (SDE), Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.
River Engineering and Urban Drainage Research Centre (REDAC), Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia.
Int J Biol Macromol. 2020 Aug 15;157:648-658. doi: 10.1016/j.ijbiomac.2019.11.218. Epub 2019 Nov 29.
Chitosan-polyethyleneimine with calcium chloride as ionic cross-linker (CsPC) was synthesized as a new kind of adsorbent using a simple, green and cost-effective technique. The adsorption properties of the adsorbent for Acid Red 88 (AR88) dye, as a model analyte, were investigated in a batch system as the function of solution pH (pH 3-12), initial AR88 concentration (50-500 mg L), contact time (0-24 h), and temperature (30-50 °C). Results showed that the adsorption process obeyed the pseudo-first order kinetic model and the adsorption rate was governed by both intra-particle and liquid-film mechanism. Equilibrium data were well correlated with the Freundlich isotherm model, with the calculated maximum adsorption capacity (q) of 1000 mg g at 30 °C. The findings underlined CsPC to be an effective and efficient adsorbent, which can be easily synthesized via one-step process with promising prospects for the removal of AR88 or any other similar dyes from the aqueous solutions.
壳聚糖-聚乙烯亚胺与氯化钙作为离子交联剂（CsPC）是一种新型的吸附剂，使用简单、绿色、经济高效的技术合成。采用间歇法研究了该吸附剂对酸性红 88（AR88）染料作为模型分析物的吸附性能，考察了溶液 pH 值（3-12）、初始 AR88 浓度（50-500mg/L）、接触时间（0-24h）和温度（30-50°C）的影响。结果表明，吸附过程符合准一级动力学模型，吸附速率受颗粒内扩散和液膜扩散共同控制。平衡数据与 Freundlich 等温模型拟合良好，在 30°C 时最大吸附容量（q）为 1000mg/g。研究结果表明，CsPC 是一种有效且高效的吸附剂，可通过一步法简单合成，有望从水溶液中去除 AR88 或任何其他类似染料。
