CMC-g-PAMPS/ST合成及对亚甲基蓝的吸附性  

Synthesis of CMC-g-PAMPS/ST Hydrogel and its Adsorption to Methylene Blue Dye

作　　者：李丽[1] LI Li(Academic publication center,Anhui University of Science and Technology,Huainan Anhui 232001,China)

机构地区：[1]安徽理工大学学术出版中心,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2018年第4期75-81,共7页Journal of Anhui University of Science and Technology:Natural Science

摘　　要：为去除等污染物,以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、羧甲基纤维素(CMC)和有机海泡石黏土(ST)为原料,采用微波辐射法,通过接枝共聚合成了CMC-g-PAMPS/ST水凝胶。研究了ST对水凝胶吸水倍率和对亚甲基蓝(MB)吸附量的影响,探讨了水凝胶用量、染料初始浓度、染料溶液p H、吸附时间对亚甲基蓝吸附性能的影响。实验结果显示:有机海泡石对MB的吸附量比原矿和酸活化海泡石有显著提高,在MB初始浓度为1 000mg/L,吸附剂为0.2g时,p H为5时吸附量达1 034mg/g,吸附动力学曲线较好地符合准二级动力学反应模型,可以作为阳离了染料废水处理用的生物质吸附剂。In order to remove the pollutants such as refractory organics, 2-acrylamide-2-methylpropylsulfonic acid （AMPS）, carboxymethyl cellulose （CMC） and organic sepiolite clay （ST） were taken as the raw material to synthesize carboxymethylcellulose -g-2-acrylamido-2-methylpropanesulfonicacid/ organic sepiolite （CMC-g-PAMPS/ST）） hydrogel with grafting polymerization by using microwave irradiation. The effects of ST on hydrogel absorbency and adsorption methylene blue （MB）, together with the effects of hydrogel dosage,concentration of the dye,pH and contact time on adsorption property of MB were studied. The results showed that the amount of MB adsorbed by organic sepiolite was significantly enhanced compared with that by raw ore and activated-sepiolite. And under the conditions of hydrogel dosage of 0.2g,the initial MB dye concentration of 1 000mg/L, pH of 5, the adsorption capacity was found to be 1 034mg/g, with the adsorption kinetic curve fitting well with the quasi-second-order kinetic reaction model. This study indicates that the hydrogel can be used as biomass adsorbent to treat the printing and dyeing wastewater.

关 键 词：吸附 水凝胶 有机海泡石 亚甲基蓝 羧甲基纤维素 

分 类 号：TM215[一般工业技术—材料科学与工程]