摘要
将丙烯酰胺接枝到淀粉上并负载到炭黑表面制备一种新型复合吸附剂(CLS),用于去除印染废水中亚甲基蓝,研究了引发剂浓度、反应温度、淀粉/炭黑和淀粉/丙烯酰胺的质量比对接枝参数与吸附效率的影响,得到较佳制备条件。同时对比了纯淀粉、炭黑与CLS对亚甲基蓝吸附性能,结果表明CLS吸附性能明显优于纯淀粉和炭黑。吸附动力学研究发现,CLS对亚甲基蓝的吸附行为符合准二级动力学模型,吸附过程为物理扩散吸附与化学吸附并存;CLS对亚甲基蓝的吸附以颗粒内扩散为控制步骤。
A new composite material,loaded in carbon black with modified starch by grafting acrylamide( CLS),was produced for removal of methylene blue trihydrate and characterized through FTIR. The effects of initiator concentration,reaction temperature,mass ratio of starch and carbon black and mass ratio of starch and acrylamide were investigated. The adsorption experimental results showed that the adsorption capacity of CLS was better than starch or carbon black. The adsorption process followed particle internal diffusion model very well and could be according with pseudo-second-order rate equation on the whole. The adsorption of methylene blue trihydrate on CLS was an intraparticle diffusion process.
出处
《环境工程》
CAS
CSCD
北大核心
2014年第7期20-23,84,共5页
Environmental Engineering
基金
山东省自然科学基金(ZR2011BL013)
滨州学院科研基金项目(BZXYG1315)
滨州学院实验技术研究项目(BZXYSYXM201309)
滨州学院校级青年项目(BZXYL1202)
服务滨州科技发展行动计划项目(BZXYFB20120604)
滨州市科技发展计划项目(2013ZC0702)
关键词
淀粉
丙烯酰胺
炭黑
亚甲基蓝
starch
acrylamide
carbon black
methylene blue trihydrate
