聚乙烯醇/壳聚糖复合泡沫吸附剂的制备及对镍离子的吸附性能试验研究

摘要研究了采用化学发泡法制备多孔聚乙烯醇/壳聚糖复合泡沫吸附剂,并用以从溶液中吸附Ni²⁺,利用扫描电镜和傅立叶变换红外光谱仪对所制备复合泡沫吸附剂进行表征,考察了溶液pH、溶液中Ni²⁺初始质量浓度及吸附时间对复合泡沫吸附剂吸附Ni²⁺的影响。结果表明:聚乙烯醇与壳聚糖在一定条件下,通过适量致孔剂、发泡剂的作用,可以复合成具有内部多孔网络结构的泡沫吸附剂;聚乙烯醇和壳聚糖之间具有很好的兼容性;复合泡沫吸附剂对镍离子有较高吸附量,当溶液pH=6时,吸附量约为80 mg/g。 A macro porous polyvinyl alcohol/chitosan composite foam adsorbent(PVA/CTS)was prepared by chemical expansion and used to adsorb nickel ions from aqueous solutions.The foam adsorbent was characterized by scanning electron microscope and Fourier transform infrared spectroscopy.The effects of solution initial pH,initial concentration of Ni²⁺in solution and adsorption time on adsorption of Ni²⁺by composite foam adsorbent were investigated.The results show that under certain conditions,polyvinyl alcohol and chitosan can be compounded into foam adsorbent with many heterogeneous porous structure by the action of appropriate amount of pore-forming agent and foaming agent.There is good compatibility between polyvinyl alcohol and chitosan.Composite foam adsorbent has high adsorption capacity for Ni²⁺,and the adsorption capacity is about 80 mg/g when the solution pH=6.

作者郭娜胡敏颜子博刘洁岭彭丽 GUO Na;HU Min;YAN Zibo;LIU Jieling;PENG Li(.Deyang Research Center of Building Materials and Environmental Resource Engineering Technology,Sichuan College of Architectural Technology,Deyang 618000,China;College of Architecture and Environment,Sichuan University,Chengdu 610065,China)

机构地区四川建筑职业技术学院德阳市建材环保资源化工程技术研究中心四川大学建筑与环境学院

出处《湿法冶金》 CAS 北大核心 2021年第2期110-115,共6页 Hydrometallurgy of China

基金四川省科技计划项目(2015HH0067) 四川省教育厅计划项目(16ZB0517)。

关键词聚乙烯醇壳聚糖泡沫吸附剂发泡法镍离子 polyvinyl alcohol chitosan foam adsorbents chemical expansion nickel ions

分类号 TF815 [冶金工程—有色金属冶金] TF424