纤维素基磁性聚偕胺肟树脂的研究——溴在树脂上的吸附动力学  

Studies on Cellulose based Magnetic Polyamidoxime Adsorbents Adsorption Kinetics of Adsorbents for Bromine

作　　者：吴锦远[1] 杨超雄[1] 

机构地区：[1]中国科学院广州化学研究所

出　　处：《高等学校化学学报》1998年第2期265-269,共5页Chemical Journal of Chinese Universities

基　　金：中国科学院广州化学研究所纤维素化学开放实验室资助

摘　　要：研究了酸式和碱式纤维素基磁性聚偕胺肟树脂（ＡＭＡＯ，ＢＭＡＯ）对溴的吸附行为．结果表明，吸附速度不但受控于粒内扩散，也受质量作用的影响．ＢＭＡＯ吸溴量与溴浓度有关，符合Ｆｒｅｕｎｄｌｉｃｈ和Ｌａｎｇｍｕｉｒ等温吸附方程．溴在树脂上高的摩尔比吸附暗示着吸附后随即进行氧化还原反应，并可能发生连续再吸附．Adsorption kinetics of acidic and alkaline cellulose based magnetic polyamidoxime adsorbents(AMAO and BMAO) for bromine was investigated. The results show that the adsorption rate is controlled by intra particle diffusion, however, it is also affected by mass action. Under the experimental conditions, the relationship between the adsorption capacity and the concentration of bromine was found to be confirmed with Freundlich equation and Langmuir adsorption isotherm. The higher super molar ratio adsorption suggests that the adsor ption is followed by redox reaction, but the occurrence of cycle adsorption is considerable.

关 键 词：纤维素基 吸附剂 聚偕胺肟 溴 磁性树脂 

分 类 号：O647.33[理学—物理化学] O613.43[理学—化学]