PREPARATION AND RESEARCH OF MAGNETIC CELLULOSE/BENTONITE BASED HEAVY METAL ADSORPTION MATERIAL
Magnetic cellulose materials having advantages such as super paramagnetic,high biocompatibility,reproducible and easy surface modification become a boom research at present.In this paper,based on microcrystalline cellulose(MCC)and bentonite,the magnetic cellulose/bentonite composite(MCSM-B)can be prepared using the dissolution and regeneration of cellulose to embed Fe3O4@SiO2 particles and then grafting diethylenetriamine(DETA)and carbon disulfide(CS2).The adsorption properties of MCSM-B to Cu2+was discussed by a series of single factor experiments such as the initial concentration of Cu2+,pH value,adsorption dosage,reaction temperature and adsorption time.The results showed that the maximum removal rate can reach 99.8%within 150min on the condition of optimization of Cu2+adsorption.The adsorption process was best described by a pseudo-second-order kinetic model,while isotherm modeling revealed that the Freundlich equation better describe the adsorption of Cu2+on MCSM-B compared to Langmuir model.Moreover,MCSM-B not only had a good adsorption performance,but also expressed super paramagnetic to be separated very fast within magnetic field.
Yunhua Li Hongxiang Zhu Cunzhi Zhang Lijun Wang Dongxue Li Jingjing Su
College of Light Industry and Food Engineering,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control,Nanning 530004,China
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-5
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）