Evidence-based Synthesis and Advanced Modeling towards Next Generation of Membrane Science and Technology

下一代膜科学技术的循证合成和高级建模

• 批准号: RGPIN-2020-04650
• 负责人: Abdelrasoul, Amira
• 金额: $ 2.4万
• 依托单位: University of Saskatchewan
• 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=746759
• 关键词: Evidence; based; Synthesis; Advanced; Modeling

Membrane technology is currently the most effective method for diversified water and wastewater treatment as well as numerous industrial and biomedical applications. The major drawback of membrane technology is fouling, which causes a decline in permeation flux, change in rejection selectivity, increase in energy consumption and operating costs, and reduction in lifetime. Membrane performance can be enhanced by improving membrane hydrophilicity through inserting nanofillers (NFs) or undertaking surface modification by trial-and-error methodologies. However, these approaches have limited success and create additional problems; specifically, they face multiple challenges and drawbacks related to the dispersion mechanisms of NFs that negatively affect physical, chemical, and mechanical stability. As such, a substantial knowledge gap exists in terms of understanding the controls on membrane stability, performance, and lifetime. Furthermore, the absence of advanced research on visualization of water transport and solute interactions inside membrane matrices, and associated fouling mechanisms, prevents us from controlling membrane morphology and exploiting their tunable chemistry, which in turn affects performance and lifetime. Knowledge with respect to accurate mechanistic aspects and their translation into mathematical concepts and model descriptions to predict membrane performance and longevity is also lacking. The overall goal of this research program is to develop and synthesize innovative membranes with improved stability, performance, antifouling properties, and lifetimes. Towards this goal, the short-term (5-year) objectives are to: (1) develop and optimize membrane designs with tuned chemistry to enhance membrane hydrophilicity and reduce contaminant interactions; (2) conduct a series of in situ investigations and data validations to optimize the operating conditions and dispersion mechanisms of NFs for optimal chemical, physical, and mechanical stabilities for improved performance and lifetimes; and (3) investigate in situ water transport, interactions, and fouling mechanisms inside membrane matrices and develop comprehensive models that effectively evaluate membrane performance. The long-term goal of this research program is to create optimal membrane technologies for multiple usage scenarios and a variety of applications. The knowledge gained will be critical for developing advanced membrane technologies for separation processes in industrial applications that address water and wastewater treatment sustainability, safeguarding of environmental health, and industrial concerns in Canada and globally. The potential users of the results include a wide range of industries, environmental protection agencies, and governmental decision makers. This program will strengthen Canada's economic competitiveness in sustainability sectors and train HQP with skills necessary to move into future positions in industry, consulting, academia, or government.

膜技术是目前最有效的方法，用于各种水和废水处理以及许多工业和生物医学应用。膜技术的主要缺点是结垢，其导致渗透通量下降、截留选择性改变、能量消耗和操作成本增加以及寿命缩短。通过插入纳米填料（NF）或采用试错法进行表面改性来改善膜的亲水性，可以提高膜的性能。然而，这些方法具有有限的成功并产生额外的问题;具体地，它们面临与NF的分散机制相关的多种挑战和缺点，这些挑战和缺点对物理、化学和机械稳定性产生负面影响。因此，在理解膜稳定性、性能和寿命的控制方面存在很大的知识差距。此外，缺乏先进的研究可视化膜基质内的水传输和溶质相互作用，以及相关的污染机制，阻止我们控制膜的形态和利用其可调的化学，这反过来又影响性能和寿命。还缺乏关于精确的机械方面的知识以及将其转化为数学概念和模型描述以预测膜性能和寿命。该研究计划的总体目标是开发和合成具有改进的稳定性，性能，可重复性和寿命的创新膜。为实现这一目标，短期（5年）目标是：（1）开发和优化具有调谐化学的膜设计，以增强膜亲水性并减少污染物相互作用;（2）进行一系列原位调查和数据验证，以优化NF的操作条件和分散机制，以获得最佳的化学、物理和机械稳定性，从而提高性能和寿命;和（3）研究原位水传输、相互作用和膜基质内的污染机理，并开发有效评估膜性能的综合模型。该研究计划的长期目标是为多种使用场景和各种应用创造最佳的膜技术。所获得的知识将是至关重要的开发先进的膜技术，用于工业应用中的分离过程，解决水和废水处理的可持续性，保护环境健康，以及加拿大和全球的工业问题。结果的潜在用户包括广泛的行业，环境保护机构和政府决策者。该计划将加强加拿大在可持续发展领域的经济竞争力，并为HQP提供必要的技能培训，以便将来在工业，咨询，学术界或政府部门任职。