Evaluation of nano-scale zero-valent iron for removal of organo-selenium species from industrial wastewater
纳米零价铁去除工业废水中有机硒的评价
基本信息
- 批准号:533697-2018
- 负责人:
- 金额:$ 1.82万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Engage Grants Program
- 财政年份:2018
- 资助国家:加拿大
- 起止时间:2018-01-01 至 2019-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Selenium is a contaminant of concern that is present in industrial wastewaters from many Canadian industries, including coal mining, oilsands mining, petroleum refining, and coal-fired powerplants. In wastewater, selenium is typically present in inorganic form which include selenate (SeO4)2- and selenite (SeO3)2- oxyanion species. Biological treatment processes applied to treat industrial wastewaters have shown to reduce inorganic selenium oxyanions to elemental selenium. However, formation of organic selenium compounds such as selenomethionine with higher toxicity and tendency to bioaccumulate have been noted during biological treatment. Recent regulations target magnitude of bioaccumulation of selenium in fish tissues rather than selenium concentrations in end-of-pipe effluents. The environmental effects, toxicity and stringent regulations demand removal of organoselenium species from industrial wastewater. Stantec is keen in developing a technology that will effectively remove organoselenium from industrial wastewaters as there are no technologies that has been demonstrated for these compounds. ****This research work proposes to evaluate removal of organoselenium species from industrial wastewaters by adsorption using nano zerovalent iron (nZVI) composites. Use of nZVI composites is promising as the material has demonstrated high potential for removal of wide range of inorganic metals and metalloids from wastewaters. The ability of nZVI to adsorb organoselenium species will be evaluated through laboratory batch and continuous experiments. Experiments will be conducted with selenomethionine, selenocyanate, and S-(methyl)selenocystine as references for organoselenium compounds. Adsorption isotherms and the effect of various process parameters such as wastewater pH, ionic strength, temperature and other competing anions will be evaluated for these reference compounds. These new understanding developed under this project will be employed for the removal of organoselenium compounds from industrial wastewaters.****************
硒是一种令人担忧的污染物,存在于加拿大许多工业的工业废水中,包括煤矿开采、油砂开采、石油炼制和燃煤发电厂。在废水中,硒通常以无机形式存在,包括硒酸盐(SeO4)2-和亚硒酸盐(SeO3)2-氧阴离子种。应用于处理工业废水的生物处理工艺已证明可将无机硒氧离子还原为元素硒。然而,在生物处理过程中,已注意到有机硒化合物如硒代蛋氨酸的形成具有较高的毒性和生物积累倾向。最近的法规针对的是鱼类组织中硒的生物积累幅度,而不是管道末端流出物中的硒浓度。环境影响、毒性和严格的法规要求从工业废水中去除有机硒。Stantec热衷于开发一种技术,可以有效地从工业废水中去除有机硒,因为目前还没有针对这些化合物的技术被证明。****本研究旨在探讨纳米零价铁(nZVI)复合材料对工业废水中有机硒的去除效果。nZVI复合材料的应用前景广阔,因为该材料在去除废水中的各种无机金属和类金属方面具有很高的潜力。nZVI吸附有机硒的能力将通过实验室批量和连续实验进行评价。实验将以硒代蛋氨酸、硒氰酸盐和S-(甲基)硒半胱氨酸作为有机硒化合物的参考。吸附等温线和各种工艺参数(如废水pH、离子强度、温度和其他竞争阴离子)的影响将对这些参考化合物进行评估。在这个项目下发展的这些新认识将用于从工业废水中去除有机硒化合物。****************
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Achari, Gopal其他文献
Pilot-Scale Treatment of Neutral Pharmaceuticals in Municipal Wastewater Using Reverse Osmosis and Ozonation
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10.1061/(asce)ee.1943-7870.0001777 - 发表时间:
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Predicting River Flow Using an AI-Based Sequential Adaptive Neuro-Fuzzy Inference System
- DOI:
10.3390/w12061622 - 发表时间:
2020-06-01 - 期刊:
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- 作者:
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Disinfection and Photocatalytic Degradation of Organic Contaminants Using Visible Light-Activated GCN/Ag2CrO4 Nanocomposites
- DOI:
10.3390/catal12090943 - 发表时间:
2022-09-01 - 期刊:
- 影响因子:3.9
- 作者:
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Mineralization of sulfolane in aqueous solutions by Ozone/CaO2 and Ozone/CaO with potential for field application
- DOI:
10.1016/j.chemosphere.2018.01.072 - 发表时间:
2018-04-01 - 期刊:
- 影响因子:8.8
- 作者:
Izadifard, Maryam;Achari, Gopal;Langford, Cooper H. - 通讯作者:
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Design and evaluation of a UV LED Photocatalytic Reactor Using Anodized TiO2 Nanotubes
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10.2175/106143015x14362865226879 - 发表时间:
2016-08-01 - 期刊:
- 影响因子:3.1
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Ghosh, Jyoti P.;Achari, Gopal;Langford, Cooper H. - 通讯作者:
Langford, Cooper H.
Achari, Gopal的其他文献
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{{ truncateString('Achari, Gopal', 18)}}的其他基金
Developing Low Energy Photo-based Water and Wastewater Treatment Technologies
开发低能量光水和废水处理技术
- 批准号:
RGPIN-2019-04809 - 财政年份:2022
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Optimization of wastewater treatment plant operation using artificial intelligence and machine learning
利用人工智能和机器学习优化污水处理厂的运行
- 批准号:
566980-2021 - 财政年份:2021
- 资助金额:
$ 1.82万 - 项目类别:
Alliance Grants
Ozone based technologies to remediate sulfolane contaminated sites
基于臭氧的技术修复环丁砜污染场地
- 批准号:
543333-2019 - 财政年份:2021
- 资助金额:
$ 1.82万 - 项目类别:
Collaborative Research and Development Grants
Developing Low Energy Photo-based Water and Wastewater Treatment Technologies
开发低能量光水和废水处理技术
- 批准号:
RGPIN-2019-04809 - 财政年份:2021
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Developing Low Energy Photo-based Water and Wastewater Treatment Technologies
开发低能量光水和废水处理技术
- 批准号:
RGPIN-2019-04809 - 财政年份:2020
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Ozone based technologies to remediate sulfolane contaminated sites
基于臭氧的技术修复环丁砜污染场地
- 批准号:
543333-2019 - 财政年份:2020
- 资助金额:
$ 1.82万 - 项目类别:
Collaborative Research and Development Grants
Development and evaluation of a UVC disinfection chamber and a handheld UVC-LED disinfection unit to combat COVID-19
用于对抗 COVID-19 的 UVC 消毒室和手持式 UVC-LED 消毒装置的开发和评估
- 批准号:
554908-2020 - 财政年份:2020
- 资助金额:
$ 1.82万 - 项目类别:
Alliance Grants
Development of Visible-Light Sensitive Self-disinfecting Virucidal Coating via Photodynamic Inactivation to Reduce the Transmission of COVID-19
通过光动力灭活开发可见光敏感自消毒病毒涂层以减少 COVID-19 的传播
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554793-2020 - 财政年份:2020
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基于臭氧的技术修复环丁砜污染场地
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543333-2019 - 财政年份:2019
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- 批准号:
RGPIN-2019-04809 - 财政年份:2019
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
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