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.

背景和基本原理 - 污水处理正成为加拿大水资源可持续性日益面临的挑战。新出现的污染物（EC）在处理和人类排泄后进入废物流，并且无法通过传统废水处理有效去除，威胁人类健康和水生生物。先进处理（例如臭氧化）引起的副产品（PB）也存在类似的限制。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影响同样重要。作为上述问题的解决方案，该研究计划的目标是使用纳米纤维和多孔珠开发低成本的“绿色”吸附生物材料，这些材料可根据要去除的 EC，提供大的比表面积和所寻求的保留选择的多功能性。这些创新的生物吸附剂大规模生产、使用和回收用于水处理，将彻底改变废水处理对环境的影响。目标 - 该研究计划的长期目标集中于所开发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。此后，必须实现几个里程碑，包括设计、优化以及最终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，分别从改性生物材料中合成新型电纺纳米纤维和多孔珠，用于水净化。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旨在从水基体中去除或显着减少一些选定的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：通过静电纺丝工艺开发和表征新型纳米纤维。目标 2：开发并表征通过静电挤出工艺合成的新型多孔珠。 目标 3：表征臭氧处理后 ECs 副产物 (BPs) 并评估新型吸附剂对 BPs 的吸附作用。