• 关键词：膨润土负载纳米铁/镍  阿莫西林  去除率  阴离子  阳离子

• 基金项目：福建省自然科学基金（No.2016J05028）

• 林泽
• 福建师范大学环境科学与工程学院, 福州 350007

• 宁军
• 福建师范大学环境科学与工程学院, 福州 350007

• 翁秀兰
• 福建师范大学环境科学与工程学院, 福州 350007

• 陈祖亮
• 福建师范大学环境科学与工程学院, 福州 350007

• 摘要：采用液相还原法制备膨润土负载纳米铁/镍（Bent-Fe/Ni）用于还原阿莫西林，研究了不同浓度的阴离子（SO₄^2-、HCO₃^-）和阳离子（Ca²⁺、Cu²⁺）对Bent-Fe/Ni还原阿莫西林的影响.结果表明，SO₄^2-、HCO₃^-浓度对Bent-Fe/Ni还原阿莫西林的影响较大，当其浓度分别为0和500 mg·L^-1时，阿莫西林的去除率分别为93.7%和21.5%（SO₄^2-），以及93.7%和5.8%（HCO₃^-）；Ca²⁺对Bent-Fe/Ni还原阿莫西林起到抑制作用，当其浓度为0和500 mg·L^-1时，阿莫西林的去除率分别为93.7%和77.8%；低浓度的Cu²⁺对Bent-Fe/Ni还原阿莫西林起到促进作用，而高浓度的Cu²⁺对Bent-Fe/Ni还原阿莫西林起到抑制作用，当其浓度为0、10和100 mg·L^-1时，阿莫西林的去除率分别为93.7%、94.8%和86.7%.

• Abstract：Bentonite supported Fe/Ni nanoparticles (Bent-Fe/Ni) was prepared by chemical reduction in aqueous solution, and was used to remove amoxicillin. The effects of different concentrations of anions (SO₄^2- and HCO₃^-) and cations (Ca²⁺ and Cu²⁺) on the reduction of amoxicillin using Bent-Fe/Ni were investigated. The results indicated that SO₄^2- and HCO₃^-was a major factor on the reduction of amoxicillin, where the removal efficiency of amoxicillin reduced from 93.7% to 21.5%, and 93.7% to 5.8% when the concentration of SO₄^2- and HCO₃^- increased from 0 to 500 mg·L^-1. However, the removal efficiency of amoxicillin reduced from 93.7% to 77.8% as the concentration of Ca²⁺ increased from 0 to 500 mg·L^-1, suggesting that the coexisted Ca²⁺ inhibited the reduction of amoxicillin. In addition, 93.7%, 94.8% and 86.7% of amoxicillin was removed as the concentration of Cu²⁺ was 0, 10 and 100 mg·L^-1, respectively, indicating that low concentration of Cu²⁺ promoted the reduction of amoxicillin and the high concentration of Cu²⁺ inhibited the reduction of amoxicillin.

• Key words：bentonite supported Fe/Ni nanoparticles  amoxicillin  reduction  anion  cation

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