摘要
以AM和AA为单体,MBA为交联剂,在水溶液中利用GDEP引发一步制得P(AM-co-AA)水凝胶并研究了其对阳离子型染料MG的吸附特性。考察了pH、吸附时间,初始浓度等因素对吸附性能的影响,同时探讨了可能的吸附机理。结果表明,最佳的吸附pH为5.6,吸附时间为4 h,P(AM-co-AA)水凝胶对MG的吸附行为符合动力学准二级反应和Langmuir吸附等温式,用Langmuir吸附模型计算得到P(AM-co-AA)水凝胶对MG的最大吸附量为934.6 mg/g。
The poly（acrylamide-co-acrylic acid）（P（AM-co-AA）） hydrogel was prepared in aqueous solution by using glow-discharge electrolysis plasma（GDEP） induced graft copolymerization of acrylamide（AM） and acrylic acid（AA）,in whichN,N＇-methylenebisacrylamide（MBA） was used as a crosslinker.Factors influencing the adsorption of malachite green（MG） on P（AM-co-AA） hydrogel such as solution pH,contact time,initial concentration were investigated in detail by batch experiments.The adsorption mechanism was also discussed.The results showed that the best parameters for the adsorption of dyes were pH 5.6 and the equilibrium contact time 4 h.The adsorption process can be well described by the pseudo-second-order kinetic and the Langmuir model.The maximum adsorption capacityfound of P（AM-co-AA） hydrogel for MG by using Langmuir equation was 934.6 mg/g.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第11期59-64,共6页
Technology of Water Treatment
基金
教育部重点科技基金资助项目(00250)
甘肃省自然科学基金资助项目(3ZS041-A25-028
096RJZA120)
西北师范大学青年教师科研能力提升计划资助项目(NWNU-LKQN-10-16)
