论文部分内容阅读
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Ni2+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 new type of humic acid hydrogel p (HA / AA / IPA) was prepared by reverse phase suspension polymerization with acrylic acid and N-isopropylacrylamide using natural organic polymer humic acid as the main raw material. The aqueous solution In the Ni2 + adsorption properties of the study. The effects of pH value, adsorption time, dosage of hydrogel and the initial concentration of Ni2 + on adsorption were investigated. The results showed that the adsorption time was 6 h, the optimum pH range was 4.5-7.5, the optimal adsorption temperature was 32 ℃, the initial concentration of Ni2 + was less than 70 mg / L, the dosage of hydrogel was 0.5 g / L. At this time, the adsorption capacity of Ni2 + reached 49.8 mg / g and the adsorption performance was superior. It was proved that hydrogel p (HA / AA / IPA) could be used as a good adsorbent to remove Ni2 + in water.