摘要
以葡萄藤为原料,在500℃条件下制备生物炭,用负载聚吡咯(PPy)的方法改性生物炭。利用吸附试验研究投加量、吸附时间、初始浓度、初始pH值和共存离子对改性生物炭(PPy/GBC)除氟能力的影响。结果表明,PPy/GBC在pH值4.0~9.0溶液中对氟离子都具有较好的吸附效果;在初始浓度为10 mg/L,吸附时间为3 h,投加量为10 g/L时氟的去除率可达90%以上。溶液中常见的氯离子和硫酸根对吸附剂的吸附没有显著影响。PPy/GBC对氟离子的吸附过程符合伪二级动力学模型。
Biochar was prepared from grapevine at 500℃,and the biochar(PPy/GBC)was modified by load polypyrrole(PPy).The effects of additive amount,adsorption time,initial concentration,initial pH value and co-existing ions on the fluoride removal capacity of PPy/GBC were studied through adsorption experiments.The results showed that THE PPy/GBC had a wide application range for pH of the solution,and a good adsorption effect between 4.0 and 9.0 solutions.When the initial concentration was 10 mg/L,the adsorption time was 3 h,and the dosage was 10 g/L,the removal rate of fluorine could reach more than 90%.The common chlorine ions and sulfuric acid in the solution had no significant effect on the adsorption of the adsorbent.The adsorption process of THE PPy/GBC for fluoride ion conformed to the pseudo-second-order kinetic model.
作者
吕续永
周建勤
朱新萍
愚广灵
贾宏涛
周文君
申志博
LV Xu-yong;ZHOU Jian-qin;ZHU Xin-ping;YU Guang-ling;JIA Hong-tao;ZHOU Wen-jun;SHEN Zhi-bo(College of Pratacultural and Environmental Sciences,Xinjiang Agricultural University,Urumqi 830052,China)
出处
《新疆农业大学学报》
CAS
2020年第3期228-234,共7页
Journal of Xinjiang Agricultural University
基金
南京农业大学-新疆农业大学联合基金项目(KYYJ201702)。
关键词
葡萄藤炭
聚吡咯改性
氟离子
吸附
grapevine carbon
polypyrrole modification
fluorine
adsorption
