Removal of 17beta-estradiol and its metabolites from aquaculture wastewater using advanced oxidation processes

采用高级氧化工艺去除水产养殖废水中的 17β-雌二醇及其代谢物

• 批准号: 537774-2018
• 负责人: Gagnon, Graham
• 金额: $ 2.24万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=699437
• 关键词: Removal; 17beta; estradiol; its; metabolites

The freshwater eel industry is responsible for more than one billion dollars in production globally, and of that production, more than 95% comes from aquaculture. Though a commercially lucrative industry, eel aquaculture does have constraints - male eels mature to an average of 150 g whereas female eels mature to more than 500 g. Additionally, eels do not differentiate their sex until later in life and will generally develop into males in high density aquaculture settings. As a result, these variables constrain the current economic value of freshwater eel culture. In order to combat these issues, natural estrogen (17beta-estradiol or E2) has been studied as a feed supplement to increase growth and feminization in freshwater eels. NovaEel Inc., a Nova Scotian aquaculture company, has developed a natural estrogen supplemented feed for American eels. However, this feed regime results in the presence of estrogens such as E2, along with its metabolites: estrone (E1) and estriol (E3) in aquaculture waste streams. Endocrine disrupting compounds (EDCs) such as E2 are becoming emerging concerns for both human and aquatic life. As such, it is crucial to manage these waste streams properly and ensure that sufficient degradation of estrogens is achieved before wastewater is discharged into municipal waste streams and into the environment. The objective of this research is to determine the most effective, commercially feasible and environmentally friendly option for the removal of estrogens from aquaculture wastewater. Our hypothesis is that UV/TiO2 photoelectrocatalysis will offer an effective and sustainable alternative to more readily available treatment technologies and will result in the formation of minimal estrogenic by-products.

淡水鳗鱼行业在全球范围内负责超过10亿美元的生产，其中95％以上来自水产养殖。鳗鱼水产养殖确实具有商业上有利可图的行业，但雄性鳗鱼的平均成熟至150 g，而女性鳗鱼则成熟到500 g。此外，鳗鱼直到生活后期才能区分性，并且通常会在高密度水产养殖环境中发展成为男性。结果，这些变量限制了淡水鳗鱼文化的当前经济价值。 为了解决这些问题，已经研究了天然雌激素（17beta-Estradiol或e2）作为饲料 补充以增加淡水鳗的生长和女性化。新斯科舍省水产养殖公司Novaeel Inc.已为美国鳗鱼开发了自然的雌激素补充饲料。但是，这种饲料状态导致雌激素（例如E2）以及其代谢物：水产养殖废物流中的雌酮（E1）和雌二醇（E3）。 E2等内分泌破坏化合物（EDC）正在成为人类和水生生物的新兴关注。因此，正确管理这些废物流是至关重要的，并确保在废水排放到市政废物流中并进入环境之前，可以实现足够的雌激素降解。 这项研究的目的是确定从水产养殖废水中去除雌激素的最有效，最可行和环保的选择。我们的假设是，UV/TiO2光电催化将为更容易获得的治疗技术提供有效且可持续的替代方案，并将导致形成最小的雌激素副产品。