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谢水波, 蔡婷, 罗志平, 吴宇琦, 刘迎九, 凌辉. γ-射线辐照降解水中阿莫西林[J]. 环境工程学报, 2015, 9(1): 73-78. doi: 10.12030/j.cjee.20150112
引用本文: 谢水波, 蔡婷, 罗志平, 吴宇琦, 刘迎九, 凌辉. γ-射线辐照降解水中阿莫西林[J]. 环境工程学报, 2015, 9(1): 73-78. doi: 10.12030/j.cjee.20150112
shu
Xie Shuibo, Cai Ting, Luo Zhiping, Wu Yuqi, Liu Yingjiu, Ling Hui. Amoxicillin degradation in aqueous solution by gamma-ray irradiation[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 73-78. doi: 10.12030/j.cjee.20150112
Citation: Xie Shuibo, Cai Ting, Luo Zhiping, Wu Yuqi, Liu Yingjiu, Ling Hui. Amoxicillin degradation in aqueous solution by gamma-ray irradiation[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 73-78. doi: 10.12030/j.cjee.20150112
shu

γ-射线辐照降解水中阿莫西林

  • 1.

    南华大学污染控制与资源化技术湖南省高校重点实验室, 衡阳 421001

  • 2.

    湖南省核农学与航天育种研究所, 长沙 410125

  • 基金项目:

    国家自然科学基金资助项目(11475080

    11175081)

    湖南省高校重点实验室创新基金项目(13K085)

  • 中图分类号: X703

Amoxicillin degradation in aqueous solution by gamma-ray irradiation

  • 1.

    Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang 421001, China

  • 2.

    Hunan Provincial Nuclear Agriculture Sciences and Space Mutation Breeding Research Institute, Changsha 410125, China

  • Fund Project:

  • 摘要: 研究了60Co γ-射线辐照条件下水中阿莫西林(AMX)的辐照降解,考察了AMX初始浓度、辐照剂量、pH、H2O2、自由基消除剂(碳酸氢钠和正丁醇)以及溶解氧等因素对AMX辐照降解的影响。结果表明,γ辐照可有效降解水中AMX,当AMX初始浓度为10.0 mg/L,辐照剂量为15 kGy时,降解率达100%,随着AMX浓度增大,其降解率降低。碱性条件有利于AMX的降解,当pH为11,且辐照剂量大于10 kGy时,AMX的降解率在90%以上。同时,加入H2O2可以促进AMX的降解;·OH自由基消除剂的存在和缺氧条件会明显抑制 γ-射线对AMX的辐照降解,分析表明,AMX的降解主要是基于·OH自由基的氧化。
    Abstract: Degradation of amoxicillin (AMX) in aqueous solution by 60Co gamma-ray irradiation was examined, and the influences of initial concentration of AMX, absorbed dose, pH value of solution, hydrogen peroxide (H2O2), ·OH radical scavengers (sodium bicarbonate and n-butanol) and dissolved oxygen, etc., were investigated.Experimental results show that AMX in aqueous solution can be effectively degraded by gamma-ray irradiation.The degradation efficiency of AMX was close to 100% at an absorbed dose of 15 kGy, and degradation rate of AMX significantly decreased with AMX concentration increase.The decomposition yield was higher under alkaline conditions than in neutral and acidic media.With a radiation dose of 10 kGy, a reduction of 90% was achieved at pH 11.Results obtained indicated that at appropriate concentrations, H2O2 accelerates AMX degradation by generating additional ·OH.However when the dosage of H2O2 exceeds the optional concentration, the efficacy of AMX degradation is reduced.Results of N2-saturated system show that the degradation rate is less than air-saturated system.A marked decreased rate in N2-saturated system showed that ·OH could promote AMX degradation.The presence of ·OH scavengers (sodium bicarbonate and n-butanol) significantly inhibited irradiation degradation of AMX, which confirmed that degradation of AMX can take place via oxidation by ·OH.
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  • 收稿日期:  2014-02-22
  • 刊出日期:  2014-12-30
谢水波, 蔡婷, 罗志平, 吴宇琦, 刘迎九, 凌辉. γ-射线辐照降解水中阿莫西林[J]. 环境工程学报, 2015, 9(1): 73-78. doi: 10.12030/j.cjee.20150112
引用本文: 谢水波, 蔡婷, 罗志平, 吴宇琦, 刘迎九, 凌辉. γ-射线辐照降解水中阿莫西林[J]. 环境工程学报, 2015, 9(1): 73-78. doi: 10.12030/j.cjee.20150112
shu
Xie Shuibo, Cai Ting, Luo Zhiping, Wu Yuqi, Liu Yingjiu, Ling Hui. Amoxicillin degradation in aqueous solution by gamma-ray irradiation[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 73-78. doi: 10.12030/j.cjee.20150112
Citation: Xie Shuibo, Cai Ting, Luo Zhiping, Wu Yuqi, Liu Yingjiu, Ling Hui. Amoxicillin degradation in aqueous solution by gamma-ray irradiation[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 73-78. doi: 10.12030/j.cjee.20150112
shu

γ-射线辐照降解水中阿莫西林

  • 1. 南华大学污染控制与资源化技术湖南省高校重点实验室, 衡阳 421001
  • 2. 湖南省核农学与航天育种研究所, 长沙 410125
  • 收稿日期:  2014-02-22
基金项目:

国家自然科学基金资助项目(11475080

11175081)

湖南省高校重点实验室创新基金项目(13K085)

摘要: 研究了60Co γ-射线辐照条件下水中阿莫西林(AMX)的辐照降解,考察了AMX初始浓度、辐照剂量、pH、H2O2、自由基消除剂(碳酸氢钠和正丁醇)以及溶解氧等因素对AMX辐照降解的影响。结果表明,γ辐照可有效降解水中AMX,当AMX初始浓度为10.0 mg/L,辐照剂量为15 kGy时,降解率达100%,随着AMX浓度增大,其降解率降低。碱性条件有利于AMX的降解,当pH为11,且辐照剂量大于10 kGy时,AMX的降解率在90%以上。同时,加入H2O2可以促进AMX的降解;·OH自由基消除剂的存在和缺氧条件会明显抑制 γ-射线对AMX的辐照降解,分析表明,AMX的降解主要是基于·OH自由基的氧化。

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