期刊论文

Optimization for saponification of lignin-based selective adsorbent by response surface methodology

Xie, J.

中文

功能材料

1001-9731

2016

47

11

11215-11219 and 11225

10.3969/j.issn.1001-9731.2016.11.042

国家自然科学基金资助项目（31270603） 湖南省研究生科技创新基金资助项目（CX2015B285）

本校为第一且通讯机构

采用响应面法研究了膨润土/木质素磺酸钠接枝丙烯酰胺选择性吸附树脂(BLPAM)的皂化实验。以氢氧化钠溶液浓度、皂化温度、皂化时间为影响因素,以Pb~(2+)吸附量、Cu~(2+)吸附量、Pb~(2+)对Cu~(2+)的选择性吸附系数、Pb~(2+)去除率、Cu~(2+)去除率为响应值建立Box-Behnken数学模型,通过响应面分析得到针对各响应值的主次因素和优化皂化条件。采用组合赋权法确定各响应值的权重,获得最终的优化皂化条件。结果表明,BLPAM的优化皂化条件为:氢氧化钠溶液浓度1.45 mol/L、皂化温度98 ℃、皂化时间2.90 h,所得皂化BLPAM树脂在二元Pb~(2+)/Cu~(2+)溶液中对Pb~(2+)吸附量为1.772 mmol/g,Cu~(2+)吸附量为1....

The saponification hydrolysis of adsorbent composites comprising of bentonite/sodium lignosulfonate graft-polymerized with acrylamide (BLPAM) were investigated by response surface methodology (RSM). In the process, the concentration of NaOH, saponification temperature and saponification time were used as response variables and the adsorption capacity of lead ions, the adsorption capacity of copper ions, the selective coefficient of lead to copper ions, the removal ratio of lead ions and the removal ratio of copper ions were studied. The Box-Beh...