河北环境工程学院学报

为高效吸附去除水中的磺胺类抗生素,选择不同性质的溶液对生物炭进行改性处理,并采用静态吸附实验探究改性生物炭对水中磺胺甲恶唑的吸附特性及影响因素。结果表明:浓度为0.4 mol/L的氯化钙溶液改性生物炭的吸附效果最好,吸附量为0.28 mg/g;磺胺甲恶唑在改性生物炭上的吸附呈现先快后慢的反应过程,可以在2 h趋于平衡,以化学吸附为主;pH为3、温度为35℃、改性生物炭添加量为0.70 g时对磺胺甲恶唑的吸附性能相对较好;当溶液中氯化钠浓度为0.5 mmol/L时,磺胺甲恶唑在改性生物炭上的吸附性能明显提升,最大吸附去除率可达86.69%。

To enhance the efficient adsorption and removal of sulfonamide antibiotics from water,biochar was modified with solutions of varying properties, and static adsorption experiments were performed to investigate SMZ adsorption characteristics and influencing factors onto the modified sample. Results showed that 0.4 mol/L calcium chloride modification achieved the highest adsorption efficiency, with an adsorption capacity of 0.28 mg/g; SMZ adsorption followed a two-stage pattern(rapid initial adsorption then gradual slowdown), reaching equilibrium within 2 hours and dominated by chemical adsorption; Optimal conditions were pH 3, temperature 35 ℃, and modified biochar dosage of 0.70 g; When the concentration of sodium chloride in the solution was 0.5 mmol/L, the adsorption performance of modified biochar for sulfamethoxazole was significantly enhanced, with the maximum removal rate of SMZ up to 86.69%.