摘要
以天然有机高分子腐植酸为主要原料，与丙烯酸、N-异丙基丙烯酰胺通过反相悬浮聚合制备一种新型腐植酸型水凝胶p（HA/AA/IPA），利用静态法对水溶液中的Ni2＋离子进行吸附性能研究。考察了溶液的pH值、吸附时间、水凝胶的投加量及N i2＋初始浓度对吸附效果的影响。试验结果表明，吸附达到平衡时的吸附时间是6 h， pH值适宜范围是4.5～7.5，最佳吸附温度是32℃，Ni2＋的初始浓度小于70 mg/L，水凝胶的投加量为0.5 g/L，此时Ni2＋的吸附量达到49.8 mg/g，吸附性能优越，证明水凝胶p（HA/AA/IPA）可以作为去除水中Ni2＋的良好吸附剂。
A novel p（HA/AA/IPAM） hydrogel was synthesized by inversing suspension polymerization with sodium humate, acrylic acid, N-isopropyl acrylamide as monomers was prepared to investigate its absorbing efifciency to nickel ions using a static method. The effects of pH value, adsorption time, amount of p（HA/AA/IPAM） hydrogel and initial concentration of nickel ions on the adsorption efifciency was also studied. The results indicated that the equilibrium was reached within the adsorption time of 6 h, pH value range was 4.5~7.5, the amount of p（HA/AA/IPAM） was 0.5 g/L, the optimum temperature was 32℃, the initial concentration of nickel ions was less than 70 mg/L. When the condition above achieved, the adsorptive capacity for Ni2＋was 49.8 mg/g, indicating that the p（HA/AA/IPA） hydrogel as a high efifcient absorbent could remove nickel ions from the aqueous solution.
出处
《腐植酸》
2014年第2期13-17,共5页
Humic Acid
基金
河北省科技计划项目
项目编号11215122D
关键词
腐植酸钠
水凝胶
吸附
镍
sodium humate
hydrogel
adsorption
nickel
