期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 -, 期 -, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-023-25816-w
关键词
Adsorption; Modified chitosan; Tea waste extract; Optimization; Pharmaceutical; Aspirin
This study explores the use of spent tea waste extract (STWE) as a green modifying agent for chitosan adsorbent modification in aspirin removal. The optimal synthesis parameters for aspirin removal were determined using response surface methodology. The results showed that the surface chemistry and characteristics of chitosan were successfully improved by STWE. The chitosan adsorbent (chitotea) demonstrated high adsorption capacity for aspirin.
This study investigates the feasibility of spent tea waste extract (STWE) as a green modifying agent for the modification of chitosan adsorbent towards aspirin removal. Response surface methodology based on Box-Behnken design was employed to find the optimal synthesis parameters (chitosan dosage, spent tea waste concentration, and impregnation time) for aspirin removal. The results revealed that the optimum conditions for preparing chitotea with 84.65% aspirin removal were 2.89 g of chitosan, 18.95 mg/mL of STWE, and 20.72 h of impregnation time. The surface chemistry and characteristics of chitosan were successfully altered and improved by STWE, as evidenced by FESEM, EDX, BET, and FTIR analysis. The adsorption data were best fitted to pseudo 2nd order, followed by chemisorption mechanisms. The maximum adsorption capacity of chitotea was 157.24 mg/g, as fitted by Langmuir, which is impressive for a green adsorbent with a simple synthesis method. Thermodynamic studies demonstrated the endothermic nature of aspirin adsorption onto chitotea.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据