Photocatalytic Anodic Metal Membranes for Micropollutant Removal

用于去除微污染物的光催化阳极金属膜

• 批准号: EP/P031382/1
• 负责人: Davide Mattia
• 金额: $ 163.41万
• 依托单位: University of Bath
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FP031382%2F1
• 关键词: Photocatalytic; Anodic; Metal; Membranes; Micropollutant

The accumulation, in the environment and in human food supply chain, of organic micropollutants, highly toxic substances such as drugs, hormones or endocrine disruptors found at very low concentrations in water, represents today one of the biggest challenges to public health and the environment in the UK and other developed countries. As a large number of compounds, including common anti-inflammatories, antibiotics, hormones, pesticides and and herbicides, is added to the priority substances watch list for future regulation, there is an urgent need for novel technologies capable of degrading micropollutants safely and without generating significant increases in carbon emissions of the water industry, already accounting for about 5% of UK emissions.Legacy technology comprising the majority of water treatment plants in the UK and other developed countries cannot remove micropollutants, requiring an additional treatment step to be added to the water treatment train. Alternative technologies currently being tested in the UK and abroad all have limitations, in terms of high energy costs or high capital costs or production of toxic by-products, which require further removal. The urgency of addressing this issue is witnessed by estimates of multi-billion pound capital investments and £B/year operating costs faced by the UK water industry, to address impending legislation mandating the removal of micropollutants. In fact, the European Water Industry Platform has concluded that the chance of removing micropollutants without significant increases in energy consumption with current technology is 'very low', and that this can be achieved only by 'leapfrogging traditional, polluting and resource-intensive technologies', a view shared by the UK government. Photocatalysis, considered the leading technology to treat micropollutants, suffers from a twin-set of limitations that have hindered more widespread adoption so far. Slurry reactors, where wastewater is mixed with a slurry of photocatalytic nanoparticles under UV illumination, can effectively degrade micropollutants but require costly downstream retention of the particles to avoid their leaching into the environment. Reactors with immobilised catalysts, on the other hand, have significantly lower activity due to lower contact area and higher light scattering. Furthermore, preliminary evidence of potential adverse health effects arising from the accumulation of nanoparticles in the environment, has convinced UK's Environment Agency, DEFRA and health authorities to block their use in water treatment.My vision as an EPSRC Established Career Fellow in Water Engineering is to safely degrade micropollutants without significantly increasing carbon emissions or producing toxic by-products. I will achieve this by creating novel photocatalytic nanoporous anodic metal foams, combining the high surface area of slurries and the stability of immobilised systems requiring no downstream removal. The combination of a metallic core and a metal oxide coating will enable boosting photocatalytic activity by using a small electrical potential, decreasing the need for low-efficiency electricity-to-light conversion.My ambition is to address the twin challenges that have so-far hindered the use of photocatalysis in water treatment: the potential leaching of photocatalytic slurries in the environment and the low efficiency of UV light illumination, which translates in low activity, for immobilised photocatalysts.

在环境和人类食品供应链中的积累，有机微污染物，剧毒物质，例如在水中非常低的药物，荷尔蒙或内分泌干扰物，这是当今英国和其他发达国家对公共卫生和环境的最大挑战之一。作为大量化合物，包括常见的抗炎药，抗生素，激素，农药和除草剂，将其添加到优先物质守望列表中，以进行未来的调节，迫切需要能够降低微量收益的新技术，而无需降低微量的水平，而不会在沃特工业中产生大量的碳水化合物，以供沃特岛的碳化量增加5％的含量。英国和其他发达国家的治疗厂无法清除微污染物，需要将额外的治疗步骤添加到水处理火车​​中。目前在英国和国外进行测试的替代技术都在高能源成本或高资本成本或产生有毒副产品的生产方面都有局限性，这需要进一步去除。解决此问题的紧迫性是通过英国水行业面临的数十亿英镑资本投资和£b/年的运营成本的估计，以解决即将授权删除微污染物的立法。实际上，欧洲水产行业平台得出的结论是，在没有当前技术的情况下，消除微污染物而没有大幅度增加的能源消耗的机会“非常低”，并且只有“跨越传统，污染和资源密集型技术”才能实现，这是英国政府共同的观点。光催化被认为是治疗微污染物的领先技术，其局限性的局限性却阻碍了到目前为止更广泛的采用。泥浆反应堆与紫外线照明下的废水与光催化纳米颗粒的浆液混合在一起，可以有效地降解微污染物，但需要昂贵的颗粒下游保留，以避免它们走进环境。另一方面，由于接触面积和较高的光散射，具有固定催化剂的反应器的活性显着降低。此外，由于环境中纳米颗粒的积累而产生的潜在不良健康影响的初步证据一直在说服英国环境局，Defra和卫生当局阻止其在水处理中的使用。我作为EPSRC建立的水工程领域的愿景，在水上工程领域建立的职业同胞，可以使微粉降低微粉降低微粉剂，而无需显着降低碳或生产碳或碳质量的较大限制。我将通过创建新型的光催化纳米多孔阳极金属泡沫来实现这一目标，从而结合了泥浆的高表面积和不动的系统的稳定性，不需要下游去除。金属芯和金属氧化物涂层的结合将通过使用较小的电势来增强光催化活性，减少对低效率的电力转换的需求。我的野心是解决具有SO-FAR在水处理中使用光催化使用的双重挑战的挑战：在水处理中使用光催化的可能性：降低了光的潜力。用于固定的光催化剂。

项目成果

Metal oxide foams for pharmaceutical amorphization

用于药物非晶化的金属氧化物泡沫

• DOI: 10.1039/d2ce00211f
• 发表时间: 2022
• 期刊: CrystEngComm
• 影响因子: 3.1
• 作者: Gröls J

Photocatalytic foams for water treatment: A systematic review and meta-analysis

• DOI: 10.1016/j.jece.2022.109238
• 发表时间: 2023-02
• 期刊: Journal of Environmental Chemical Engineering
• 影响因子: 7.7
• 作者: Zachary Warren;Thais Tasso Guaraldo;A. S. Martins;J. Wenk;D. Mattia

Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor

• DOI: 10.1016/j.jelechem.2022.116617
• 发表时间: 2022-07-18
• 期刊: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
• 影响因子: 4.5
• 作者: Martins, Alysson Stefan;Guaraldo, Thais Tasso;Boldrin Zanoni, Maria Valnice
• 通讯作者: Boldrin Zanoni, Maria Valnice

Photocatalytic ZnO Foams for Micropollutant Degradation

• DOI: 10.1002/adsu.202000208
• 发表时间: 2021-03
• 期刊: Advanced Sustainable Systems
• 影响因子: 7.1
• 作者: Thais Tasso Guaraldo;J. Wenk;D. Mattia

Highly efficient ZnO photocatalytic foam reactors for micropollutant degradation

• DOI: 10.1016/j.cej.2022.140784
• 发表时间: 2022-12
• 期刊: Chemical Engineering Journal
• 影响因子: 15.1
• 作者: T. T. Guaraldo-T.;R. Vakili;J. Wenk;D. Mattia