摘要
利用SDS(十二烷基磺酸钠)对壳聚糖进行改性,用于吸附水中的Cu(Ⅱ)。阐述了p H、初始吸附浓度、吸附时间以及温度等对吸附的影响。结果表明,在p H=5. 5时吸附效果最佳;对Cu(Ⅱ)的吸附过程在30 min达到平衡,最大吸附量为219. 22 mg/g;温度对材料的吸附量的影响较小。此方法比用CS材料达到平衡时间缩短3. 5 h,最大吸附量增加近1倍。表明通过此方法改性壳聚糖能有效的提高材料对Cu(Ⅱ)的吸附速率和吸附量。红外表征结果表明,SDS的磺酸根离子与CS中的羟基(—OH)进行了结合。
The chitosan was modified by SDS(sodium dodecyl sulfonate).The effects of pH,initial adsorption concentration,adsorption time and temperature on the adsorption process were described.The results show that the adsorption effect is the best when pH=5.5.The adsorption equilibrium achieved in 30 min,maximum adsorption quantity of Cu(Ⅱ)is 219.22 mg/g;At the same time,the influence of temperature on the material of the adsorption is small.Compare with CS,this method shortens the balance time by 3.5 h and increases the maximum adsorption amount by nearly one time.It shows that this modification can greatly improve the adsorption rate and adsorption capacity of this material.The FTIR results showed that the sulfonate ions of SDS were combined with hydroxyl(-OH)in chitosan.
作者
田薪成
刘珊
冯婷
刘丹荣
蒋翠婷
孙朝辉
TIAN Xin-cheng;LIU Shan;FENG Ting;LIU Dan-rong;JIANG Cui-ting;SUN Zhao-hui(Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education,College of Environmental Science and Engineering,Chang'an University,Xi'an 710054,China)
出处
《应用化工》
CAS
CSCD
北大核心
2019年第1期10-13,17,共5页
Applied Chemical Industry
基金
国家自然科学基金(51778057)
