Stepwise adsorption-oxidation removal of oxytetracycline by Zn0-CNTs-Fe3O4 from aqueous solution
Stepwise adsorption-oxidation removal of oxytetracycline by Zn0-CNTs-Fe3O4 from aqueous solution
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Zn0-CNTs-Fe3O4 逐步吸附氧化去除水溶液中的土霉素
DOI：
10.1016/j.cej.2019.121963
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发表时间：
2019-11
影响因子：
15.1
通讯作者：
Yong Liu
中科院分区：
文献类型：
--
作者：
Yunbo Liu;Ni Tan;Bingqing Wang;Yong Liu
提出了一种两步吸附-氧化降解法去除水溶液中土霉素（OTC）的新策略：在中性条件下，土霉素首先通过吸附富集在Zn 0-CNTs-Fe 3 O 4复合材料表面。在pH = 3、高固水比条件下，采用Zn 0-CNTs-Fe 3 O 4/O2类Fenton氧化法对富集在Zn 0-CNTs-Fe 3 O 4表面的土霉素进行氧化，减少了芬顿反应调节pH所需的酸用量。当土霉素初始浓度为100 mg/L时，两步法对土霉素的氧化率约为98.6%，高于pH 3或pH 6时吸附-氧化一步法的氧化率。两步法制备的Zn 0-CNTs-Fe 3 O 4复合材料可以重复使用。Zn 0-CNTs-Fe 3 O 4经过四次循环使用后，土霉素的去除率仅下降了6.7%。提出了土霉素在Zn 0-CNTs-Fe 3 O 4/O2表面的吸附机理和土霉素在Zn 0-CNTs-Fe 3 O 4/O2表面的氧化机理。
A novel strategy to remove oxytetracycline (OTC) from aqueous solution was proposed by two-step process of adsorption followed by oxidation degradation: OTC was firstly concentrated on the surface of the Zn0-CNTs-Fe3O4composite by adsorption process under neutral condition. Then, the concentrated OTC on the surface of Zn0-CNTs-Fe3O4was oxidized by Zn0-CNTs-Fe3O4/O2Fenton-like process at pH of 3 with high solid-water ratio, which can reduce the amount of acid used for adjusting pH for Fenton reaction. Approximately 98.6% of OTC was oxidized at initial OTC concentration of 100 mg/L by the two-step process, which was higher than that by the one-step process of adsorption-oxidation at pH 3 or pH 6. The used Zn0-CNTs-Fe3O4in two-step process could be reused after Zn0was reloaded. The removal efficiency of OTC decreased only 6.7% after four-recycle use of the Zn0-CNTs-Fe3O4. The possible adsorption mechanism of OTC onto the Zn0-CNTs-Fe3O4surface and the oxidation mechanism of the concentrated OTC by the Zn0-CNTs-Fe3O4/O2process were proposed.
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影响因子：
7.7
作者：
Xiyang Liu;Fei Huang;Yide He;Yang Yu;Yong Lv;Yanhua Xu;Yongjun Zhang
通讯作者：
Xiyang Liu;Fei Huang;Yide He;Yang Yu;Yong Lv;Yanhua Xu;Yongjun Zhang
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影响因子：
11.4
作者：
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通讯作者：
Jiang, Xin
DOI：
10.1016/j.matpr.2017.06.169
发表时间：
2017
期刊：
Materials Today: Proceedings
影响因子：
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作者：
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通讯作者：
A. Suwattanamala;N. Bandis;K. Tedsree;C. Issro
影响因子：
9.9
作者：
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通讯作者：
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DOI：
10.1016/j.jiec.2017.07.009
发表时间：
2017-12-25
影响因子：
6.1
作者：
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通讯作者：
Esmaeili, Shirin