铜铝层状双金属生物炭吸附水体四环素的研究  

Adsorption of Tetracycline in Water by Cu-Al Layered Bimetallic Biochar

作　　者：唐雅妮 杨蕊铭 李婧雯 费超 王博[1] TANG Yani;YANG Ruiming;LI Jingwen;FEI Chao;WANG Bo(School of Environmental&Safety Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学环境与安全工程学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2025年第1期19-26,共8页Journal of Liaoning Petrochemical University

基　　金：辽宁省教育厅科学研究经费项目(LJKZ0382)。

摘　　要：水环境中四环素类抗生素污染日益严重,有效去除水中残留的抗生素是当前亟待解决的问题。采用共沉淀法制备了铜铝层状双金属生物炭复合材料(CuAl-LDH@BC),通过SEM、XRD和FTIR表征手段分析了CuAl-LDH@BC表面的理化性质,并考察了其对盐酸四环素(TCH)溶液的吸附性能。结果表明,吸附过程符合准二级动力学模型和Langmuir模型,TCH在298 K的温度下的最大吸附量为78.68 mg/g,在中性条件下CuAlLDH@BC对TCH的去除效果最佳,在水环境中抗干扰能力较强;CuAl-LDH@BC吸附TCH可能涉及的机制有氢键作用、表面络合、π-π相互作用和静电作用;研究结果证实了CuAl-LDH@BC作为低成本的高效吸附剂,在吸附水体四环素类抗生素方面应用前景广阔。The pollution of tetracycline antibiotics in the water environment is increasingly serious,and the effective removal of residual antibiotics in water is an urgent problem to be solved.The co-precipitation method was used to prepare Cu-Al layered double hydroxides biochar composites(CuAl-LDH@BC)intending to remove tetracycline hydrochloride(TCH)from water.The physicochemical properties of the CuAl-LDH@BC surface were analyzed by SEM,XRD,and FTIR,and the adsorption performance of the tetracycline hydrochloride solution was revealed.The experimental results show that the adsorption process is more consistent with the quasi-second-order kinetic model and Langmuir model,and the maximum adsorption capacity of TCH is 78.68 mg/g at 298 K,and the neutral condition CuAl-LDH@BC has the best removal effect on TCH,which has strong anti-interference ability in water environment.The mechanisms involved in the adsorption of TCH by CuAl-LDH@BC may include hydrogen bonding,surface complexation,π-πinteraction,and electrostatic interaction.The results show that Cu-Al layered double hydroxides and biochar composites,as low-cost and high-efficiency adsorbents,have a broad application prospect in the adsorption of tetracycline antibiotics in water.

关 键 词：生物炭 铜铝层状双金属 盐酸四环素 吸附 水体 

分 类 号：TQ319[化学工程—高聚物工业]