Electrospun Nanofibres and Porous Beads from Sustainable Modified Biomaterials: a Promising Solution for Removal of Emerging Contaminants in Wastewater

来自可持续改性生物材料的电纺纳米纤维和多孔珠：去除废水中新兴污染物的有前途的解决方案

• 批准号: RGPIN-2021-03092
• 负责人: Lajeunesse, André
• 金额: $ 2.04万
• 依托单位: Université du Québec à Trois-Rivières
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748764
• 关键词: Electrospun; Nanofibres; Porous; Beads; Sustainable

CONTEXT AND RATIONALE - The treatment of polluted water is becoming an increasingly relevant challenge for Canada's water resources sustainability. Emerging contaminants (ECs) enter the waste stream after disposal and human excretion and are not removed efficiently by conventional wastewater treatments, threatening the human health and aquatic organisms. Similar limitations are observed of by-products (PBs) caused by advanced treatments (e.g. ozonation). Consequently, an efficient technology for environmental remediation of the pollutants is currently a critical need. Energy efficiency of this most needed technology and its low environmental fingerprint is of equally high importance. As solution to the outlined problems, the goal of this research program is to develop low cost "green" adsorbent biomaterials using nanofibres and porous beads that offer large specific surface area and versatility in the choice of retention sought, depending on the ECs to be removed. These innovative biosorbents, manufactured at large-scale, used and recycled for water treatment, will revolutionizing the environmental impact of wastewater treatment. OBJECTIVES - The long-term objective of this research program is focused on the adsorption potential of the developed materials for targeted ECs and BPs in different environmental matrices (e.g. surface water, urban effluent). Afterwards, several milestones will have to be achieved, including the design, optimization, and finally the evaluation of new prototypes suitable for a possible expansion to an industrial scale. In order to address the immediate needs, we will investigate two different routes leading respectively to the synthesis of novel electrospun nanofibres and porous beads from modified biomaterials for water purification purposes. Hence, the development and optimization of an innovative treatment technology based on synthetized, tailor-made biomaterials is undertaken to remove or reduce significantly some selected ECs from aqueous matrices. The following short-term objectives that we want to achieve to ensure the fundamental aspect of the research program are: Objective 1:Develop and characterize new nanofibres by electrospinning process. Objective 2:Develop and characterize new porous beads synthetized by electrostatic extrusion process. Objective 3:Characterize ECs by-products (BPs) after ozone treatment and evaluate sorption of BPs on new adsorbents.

背景和理由-污染水的处理正在成为加拿大水资源可持续性的一个日益相关的挑战。新兴污染物（ECs）在处置和人类排泄后进入废水流，并且不能被常规废水处理有效地去除，威胁人类健康和水生生物。高级处理（如臭氧化）产生的副产品也存在类似的局限性。因此，目前迫切需要一种有效的污染物环境修复技术。这项最需要的技术的能源效率及其低环境指纹同样重要。作为所述问题的解决方案，该研究计划的目标是开发低成本的“绿色”吸附剂生物材料，其使用纳米纤维和多孔珠粒，其提供大的比表面积和在所寻求的保留选择中的多功能性，这取决于待去除的EC。这些创新的生物吸附剂，大规模生产，用于水处理和回收，将彻底改变废水处理的环境影响。该研究计划的长期目标是关注开发的材料在不同环境基质（例如地表水，城市污水）中对目标EC和BP的吸附潜力。之后，必须实现几个里程碑，包括设计，优化，最后评估适合可能扩展到工业规模的新原型。为了满足当前的需求，我们将研究两种不同的路线，分别导致从改性生物材料合成新型电纺纳米纤维和多孔珠用于水净化目的。因此，基于合成的、定制的生物材料的创新处理技术的开发和优化正在进行，以从水性基质中显著去除或减少一些选定的EC。我们希望实现以下短期目标，以确保研究计划的基本方面是：目标1：通过静电纺丝工艺开发和表征新的纳米纤维。目的2：开发和表征通过静电挤出工艺合成的新型多孔珠粒。 目的3：表征臭氧处理后的EC副产物（BPs），并评估BPs在新吸附剂上的吸附。