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- Title
Adsorption of tetracycline in wastewater by organic modified bentonite.
- Authors
CHAI Qinqin; YANG Pingping; ZHOU Kai; ZHANG Xiaoyan; LIU Jianwei
- Abstract
In response to the poor removal effect of tetracycline from wastewater by natural bentonite (Bt), BS-12 was used to modify Bt and prepare BS-12 modified bentonite (BS-Bt) adsorption material, studied the adsorption performance of BS-Bt and Bt on tetracycline in wastewater, and the dosage of adsorbent pH and ionic concentrations were discussed. The results show that the adsorption capacity of Bt and BS-Bt for tetracycline increases with the decrease of adsorbent addition amount; with the increase of pH;with the Ca2+ concentrations increasing, the adsorption capacity present slowly decreasing trend. The adsorption process of tetracycline by Bt and BS-Bt could be completed rapid adsorption within 1 h, and reached adsorption equilibrium within4 h, it conforms to the quasi-second order dynamic equatioti (R² >0. 996) . The Freundlich model has good nonlinear fitting ability for adsorption data, and adsorption isotherms are "L-type". The adsorption capacity of organically-modified bentonite to tetracycline was significantly higher than that of bentonite, which made it a potential adsorbent for tetracycline wastewater treatment.
- Subjects
TETRACYCLINE; BENTONITE; TETRACYCLINES; SEWAGE; ADSORPTION isotherms; OIL spill cleanup
- Publication
Applied Chemical Industry, 2024, Vol 53, Issue 7, p1630
- ISSN
1671-3206
- Publication type
Article