Magnetic nanoferromanganese oxides modified biochar derived from pine sawdust for adsorption of tetracycline hydrochloride
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In this study, a new type of composite material, namely modified biochar (MBC), was synthesized by loading the magnetic ferromanganese oxide nanoparticles on pine biochar. BET, SEM, and FTIR were employed to analyze the surface properties and pore structures of MBC. In addition, XRD was adopted to examine the crystal structure of MBC. Characterization results showed that the surface area and porosity of MBC have been greatly improved, and the functional groups have been introduced by ferromanganese oxides. Adsorption experiments of tetracycline hydrochloride (TC) including kinetics, isotherms, thermodynamics as well as the influence of pH, salt ion strength, and the environmental risk of MBC, were evaluated. The results revealed that the experimental data conformed to the pseudo-second-order kinetic model and the Freundlich isotherm model. In the adsorption process, MBC showed excellent adsorption ability (maximum capacity for TC 100.74 mg g−1) to BC (33.76 mg g−1). In isotherm experiments, the maximum adsorption capacity of TC by MBC reached 177.71 mg g−1. Toxicity studies showed that the MBC had no harm to the environment. To conclude, MBC has great potential for applications in removing TC from water.
KeywordsBiochar modification Ferromanganese oxides Adsorption Tetracycline hydrochloride Toxicity
This manuscript was improved by comments from three anonymous reviewers.
This work is funded by the National Natural Science Foundation of China (51679082, 51479072).
- Christou A, Agüera A, Bayona JM, Cytryn E, Fotopoulos V, Lambropoulou D, Manaia CM, Michael C, Revitt M, Schröder P, Fatta-Kassinos D (2017) The potential implications of reclaimed wastewater reuse for irrigation on the agricultural environment: the knowns and unknowns of the fate of antibiotics and antibiotic resistant bacteria and resistance genes—a review. Water Res 123:448–467CrossRefGoogle Scholar
- Jiang L, Yuan X, Zeng G, Chen X, Wu Z, Liang J, Zhang J, Wang H, Wang H (2017) Phosphorus- and sulfur-Codoped g-C3N4: facile preparation, mechanism insight, and application as efficient photocatalyst for tetracycline and methyl orange degradation under visible light irradiation. ACS Sustain Chem Eng 5:5831–5841CrossRefGoogle Scholar
- Tan X, Liu S, Liu Y, Gu Y, Zeng G, Cai X, Yan Z, Yang C, Hu X, Chen B (2016a) One-pot synthesis of carbon supported calcined-Mg/Al layered double hydroxides for antibiotic removal by slow pyrolysis of biomass waste. Sci Rep 6Google Scholar