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Efficient adsorption of ciprofloxacin using Ga2S3/S-modified biochar via the high-temperature sulfurization.
- Source :
-
Bioresource Technology . Aug2021, Vol. 334, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- • Ga 2 S 3 /S-modified biochar (Ga/S-BC) was prepared by high-temperature sulfurization. • Ga/S-BC exhibited the efficient adsorption capacity for ciprofloxacin removal. • Electrostatic interaction was vital for the physisorption process of Ga/S-BC. Ga 2 S 3 and sulfur co-modified biochar (Ga/S-BC) composites were prepared for enhancing the adsorption of ciprofloxacin from sugarcane bagasse via the high-temperature sulfurization. In contrast with sulfur-modified biochar, Ga/S-BC exhibited the better adsorption capacity for ciprofloxacin removal. The increasing Ga content induced to the climbing and then declining adsorption activity of Ga/S-BC. Among these obtained Ga/S-BC composites, optimal 3-Ga/S-BC with a Ga content of 7.40% and surface area of 681.67 m2 g−1 exhibited the superior capacity of 330.21 mg g−1. The adsorption capacity of 3-Ga/S-BC declined to 301.66 mg g−1 after nine cycles. pH and inorganic salts also affected the adsorption capacity of 3-Ga/S-BC for ciprofloxacin removal. The adsorption isotherms of obtained Ga/S-BC composites were well described by Langmuir isotherm, and their adsorption kinetics were well estimated via second-order model. The adsorption performance of 3-Ga/S-BC in ciprofloxacin removal was a physisorption and spontaneous process. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 334
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 150412226
- Full Text :
- https://doi.org/10.1016/j.biortech.2021.125238