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: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=742374
• 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--受污染的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。新出现的污染物(ECs)经过处理和人类排泄后进入废物流中，传统的废水处理方法不能有效地去除这些污染物，威胁着人类健康和水生生物。高级处理(如臭氧氧化)造成的副产品(PBS)也有类似的局限性。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具有高度重要性。作为上述问题的解决方案，该研究计划的目标是开发使用纳米纤维和多孔珠的低成本“绿色”吸附生物材料，根据要去除的内皮细胞的不同，这些材料具有较大的比表面积和多功能性，可以选择所寻求的保留。这些大规模生产、使用和回收用于水处理的创新生物吸附剂将彻底改变废水处理的环境影响。目标--这项研究计划的长期目标是研究开发的材料在不同环境基质(如地表水、城市污水)中对目标ECs和BPS的吸附潜力。之后，将必须实现几个里程碑，包括设计、优化，最后是适合于扩大到工业规模的新原型的评估。为了解决眼前的需求，我们将研究两条不同的路线，分别从改性生物材料合成新型电纺纳米纤维和多孔珠用于净水目的。因此，基于合成的、量身定制的生物材料的创新处理技术的开发和优化被用于从水基质中显著去除或减少一些选定的EC。为了确保研究计划的基本方面，我们希望实现以下短期目标：目标1：通过静电纺丝过程开发和表征新的纳米纤维。目的：研制和表征静电挤压法制备的新型多孔微球。目的：对臭氧处理后的内皮细胞副产物(BPS)进行表征，评价新型吸附剂对BPS的吸附性能。