文章基本信息

标题：Comparative Study: The Adsorption Disparity for Tetracycline and Cefradine on Cornstalk Biochar
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作者：Khan Ahmad Ali ; Guoting Li ; Wenchuan Wang 等
期刊名称：Nature, Environment and Pollution Technology
印刷版ISSN：0972-6268
出版年度：2021
卷号：19
期号：4
页码：1379-1390
DOI：10.46488/NEPT.2020.v19i04.004
语种：English
出版社：Technoscience Publications
摘要：The study gives the elimination of two kinds of antibiotics, tetracycline (TC) and cefradine (CF) by adsorption process, on the biochar derived from cornstalk. Dense, multifaceted and thick fragments of raw cornstalk almost all vanished at a pyrolytic temperature above 400°C. The carbon content increased from 60.48% of the raw cornstalk to 75.5% of the cornstalk biochar pyrolyzed at 600°C (BC600), while the oxygen content decreased from 17.31% to 6.94%. The uptake of each TC and CF on the cornstalk biochar was highly pH-dependent. The maximum adsorption capacities of TC and CF at 298 K calculated from the Langmuir mannequin have been 28.0 and 38.0 mg/g, respectively. The Columbic interaction and π–π electron-donor-acceptor interaction between cornstalk biochar and CF/TC molecules played the main role. The experimental records were well outfitted by way of the ability of the pseudo-second-order kinetics model, indicating a possible chemisorption process to some extent. Isotherm result implied that both adsorption and partitioning contributed to the uptake of TC and CF onto BC600.
关键词：Adsorption;Cornstalk;biochar;Cefradine;Tetracycline