秋葵果胶对Pb^(2+)的吸附性能研究  

Study on Adsorption Performance of Okra Pectin on Pb^(2+)

作　　者：王文渊[1] 刘芳 雷干农 唐敏[1] WANG Wenyuan;LIU Fang;LEI Gannong;TANG Min(Yongzhou Vocational Technical College,Hunan Yongzhou 425100;Yongzhou Product Quality Supervision and Inspection Institute,Hunan Yongzhou 425000;Southen Center for Red Soil Crops and Ecology Research,Hunan Yongzhou 425102,China)

机构地区：[1]永州职业技术学院,湖南永州425100 [2]永州市产商品质量监督检验所,湖南永州425000 [3]南方红壤作物与生态研究中心,湖南永州425102

出　　处：《广州化工》2024年第20期30-32,共3页GuangZhou Chemical Industry

基　　金：湖南省教育厅科学研究项目(No:22C1350)。

摘　　要：探究秋葵果胶作为一种生物吸附剂对水溶液中Pb^(2+)的吸附性能。通过静态吸附试验测定秋葵果胶对水溶液中Pb^(2+)的吸附容量和吸附率来评价秋葵果胶对水溶液中Pb^(2+)的吸附性能。研究发现,试验溶液的pH值、初始Pb^(2+)浓度、溶液的温度以及吸附时间对秋葵果胶吸附Pb^(2+)的性能均有影响。在溶液初始Pb^(2+)浓度为20μg/mL、pH 5.0、温度为30℃时,经过40 min的吸附,果胶对溶液中的Pb^(2+)吸附容量可达到4.97 mg/g、吸附率可达到74.55%,吸附速率较快,且吸附较完全。秋葵果胶具有较好的吸附水溶液中Pb^(2+)的能力,若进一步对秋葵果胶进行结构改性或吸附条件进行优化,可作为新型的含铅废水处理剂开发和利用。The adsorption performance of okra pectin as a bioremediation agent for Pb^(2+)in aqueous solutions was investigated.The adsorption capacity and adsorption rate of okra pectin for Pb^(2+)in aqueous solutions were evaluated through static adsorption experiments.The study found that the pH value of the solution,initial Pb^(2+)concentration,solution temperature and adsorption time all had an impact on the adsorption performance of okra pectin for Pb^(2+).Under the conditions of initial Pb^(2+)concentration of 20μg/mL,pH of 5.0 and temperature of 30℃,after 40 min of adsorption,the adsorption capacity of pectin for Pb^(2+)reached 4.97 mg/g,and the adsorption rate reached 74.55%.The adsorption rate was fast,and the adsorption was relatively complete.Okra pectin exhibited good capability for adsorbing Pb^(2+)in aqueous solutions.With further modification of the structure of okra pectin or optimization of the adsorption conditions,it could be developed and utilized as a new type of lead-containing wastewater treatment agent.

关 键 词：秋葵果胶 铅离子 吸附容量 

分 类 号：O636.13[理学—高分子化学]