纤维素科学与技术2018，Vol.26Issue(2)：9-16,8.DOI:10.16561/j.cnki.xws.2018.02.08
由茶梗改性制备磁性纤维素材料及其对废水中Cu(Ⅱ)的吸附性能
Magnetic Cellulose Microspheres, an Adsorbent Made from Tea: Preparation, Characterization and Adsorption Properties of Cu(Ⅱ) in Wastewater
摘要
Abstract
Magnetic cellulose microspheres, containing Fe3O4nanoparticles were prepared with tea (T-MCMs), which was modified by cross-linking and graft copolymerization. The resulting composite was characterized by IR (infrared spectroscopy), SEM (scanning electron microscopy), XRD (X-ray powder diffraction) and VSM (vibrating sample magnetometer). The adsorption performance of Cu(Ⅱ) on T-MCMs was further studied. The initial Cu(Ⅱ) concentration, different pH and contact time was investigated. In addition, the kinetic data were examined in terms of the pseudo-first-order and pseudo-second-order kinetic models and intra-particle diffusion model. The results showed that over 90% of saturated adsorption capacity was achieved at pH5, with an initial Cu(Ⅱ) concentration of 80 mg/L and a 4 h contact time. And the common coexisting ions had no negative effect on the Cu(Ⅱ) adsorption. The adsorbent could be separated using a single magnet after adsorption. Finally, the adsorption data fit best with the pseudo-second-order kinetic model.关键词
改性茶梗/Fe3O4/纤维素微粒/吸附性能Key words
modified-tea/Fe3O4/cellulose microsphere/adsorption分类
资源环境引用本文复制引用
许丽梅,陈泳诗,林婷婷,翁丽钦,庄峙厦..由茶梗改性制备磁性纤维素材料及其对废水中Cu(Ⅱ)的吸附性能[J].纤维素科学与技术,2018,26(2):9-16,8.基金项目
国家星火计划项目(2015GA721002) （2015GA721002）
黄土与第四纪地质国家重点实验室(SKLLQG1607) （SKLLQG1607）
福建省教育厅中青年教师教育科研项目(JAT160640) （JAT160640）
福建省大学生创新创业训练计划项目(201712709006). （201712709006）
