海藻活性炭及其铁改性Fenton体系去除水中抗生素研究

功能材料, 2017, 48(3): 7-16. doi: 10.3969/j.issn.1001-9731.2017.03.002

海藻活性炭及其铁改性Fenton体系去除水中抗生素研究

甘慧慧 ^1, , 张会宁 ^2, , 张科锋 ^3, , 靳慧霞 ^4,

1.浙江大学宁波理工学院,浙江宁波,315100

2.浙江大学宁波理工学院,浙江宁波,315100

3.浙江大学宁波理工学院,浙江宁波,315100

4.浙江大学宁波理工学院,浙江宁波,315100

基金项目: 宁波市自然科学基金资助项目(2014A610093) 宁波市社会发展科技攻关资助项目(2014C50007) 国家星火科技计划资助项目(2014GA701006,2015GA701047)

关键词：海藻 , 活性炭 , Fenton , 抗生素 , 可见光 , 阿莫西林

Removal of antibiotic from water by activated carbon from seaweed and Fe/activated carbon as Fenton photocatalyst

Keywords： seaweed , activated carbon , Fenton , antibiotic , visible-light , amoxicillin

以大型海藻为原料,采用磷酸活化法制备海藻活性炭(SAC),并以海藻活性炭SAC为吸附剂,抗生素阿莫西林溶液为吸附质,考察了海藻活性炭SAC吸附阿莫西林的初始溶液浓度、pH值的影响.采用准一级、准二级动力学吸附模型对吸附动力学进行了分析.结果表明,海藻活性炭SAC对阿莫西林的吸附符合准二级动力学过程.采用水热法进一步对所制备的海藻活性炭SAC进行铁改性,组成了铁改性海藻活性炭Fenton体系,探讨了以不同比例铁改性海藻活性炭组成的可见光Fenton体系对水中阿莫西林溶液的COD去除率,Fe/SAC-3样品COD去除率为72.5%,具有最佳反应活性.

In this work, the activated carbonfrom seaweed (SAC) was prepared by phosphoric acid activation.The effects of solution concentrationand pH value on the adsorption of amoxicillin in water were discussed.The pseudo-first-order and pseudo-second-order kinetic model were used.The kinetic studies indicated that the adsorption process of amoxicillin in water by the SAC was fitted well with the pseudo-second-order kinetic model.The iron modified SAC was further synthesized by hydrothermal method and the Fenton system with iron modified SAC was constructed.The COD removal of amoxicillin in water by Fenton system with iron modified SAC under visible-light irradiation was also discussed.The results indicated that the COD removal of amoxicillin in water by the sample Fe/SAC-3 was 72.5%, which had the best photocatalytic activity.

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