Tetracycline removal from model aqueous solutions by pretreated waste Streptomyces fradiae biomass

Biotechnology & Biotechnological Equipment

Velizar Gochev¹  Gergana Kirova²  Zdravka Velkova²  Margarita Stoytcheva³ 

[1] Department of Biochemistry and Microbiology, Faculty of Biology, University of Plovdiv “Paisii Hilendarski”;Department of Chemical Sciences, Faculty of Pharmacy, Medical University of Plovdiv;Institute of Engineering (Instituto de Ingeniería), Autonomous University of Baja California (Universidad Autónoma de Baja California);

关键词: biosorption;    pharmaceuticals;    waste biomass;    sorption isotherms;    kinetics;   

DOI  :  10.1080/13102818.2021.1938677

来源: DOAJ

【 摘 要 】

Pretreated waste Streptomyces fradiae biomass was used as biosorbent to remove tetracycline (TC) from model aqueous solutions. The biosorption study was conducted in a batch system to evaluate the impact of initial pH, biosorbent dosage, initial TC concentration and contact time. Langmuir, Freundlich and Dubinin–Radushkevich (D–R) models were applied to describe the biosorption isotherm equilibrium studies. Langmuir and Freundlich models fitted the equilibrium data better than the D–R model. The monolayer biosorption capacity of the pretreated biomass for TC was 38.61 mg g−1. The experimental data were also tested in terms of biosorption kinetics using pseudo-first-order and pseudo-second order kinetics models. The results showed that the TC biosorption process followed well pseudo-second-order kinetics.

【 授权许可】

Unknown