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.
作者
唐雅妮
杨蕊铭
李婧雯
费超
王博
TANG Yani;YANG Ruiming;LI Jingwen;FEI Chao;WANG Bo(School of Environmental&Safety Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)
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)。
关键词
生物炭
铜铝层状双金属
盐酸四环素
吸附
水体
Biochar
Copper-aluminum layered bimetal
Tetracycline hydrochloride
Adsorption
Body of water
作者简介
第一作者:唐雅妮(1999-),女,硕士研究生,从事环境修复材料方面的研究,E-mail:33066992464@qq.com;通信作者:王博(1983-),男,博士,教授,从事水污染修复方面的研究,E-mail:mygoddness@163.com。
