Adsorption for Au3+ by Persimmon Tannins Immobilized on Collagen Fiber

摘要：

　　A novel adsorbent which is effective to adsorb Au3+ was prepared using immobilized persimmon tannin (PT) on collagen fiber by glutaraldehyde crosslinking.The adsorption behaviour of this new adsorbent to Au3+ in aqueous solution was investigated.The effects of various factors such as initial solution pH,temperature,ionic strength and initial concentration of Au3+ on the influence of the adsorption process were studied.The equilibrium adsorption capacity reached 2347 mg/g at 323 K and pH value 2.0 when the initial concentration of Au3+ in aqueous solution was 500 mg/L.The immobilized PT was characterized by FT-IR,XRD and SEM.The results indicated that Au3+ changed to gold by oxidation adjacent phenol hydroxyl groups of persimmon tannin.Experiments also showed that adsorption isotherms of immobilized tannin for Au3+ could be described by Langmuir models.Immobilized PT adsorption provided a new way for the separation of the precious metal ions

关键词： Persimmon tannins Au3+ Adsorption Collagen fiber

作者: Fenglei Liu Zhongmin Wang Jian Cui Zhide Zhou Guiyin Li Huaiying Zhou

作者单位: School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 39-45

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）