The National Science Foundation (NSF) is seeking grant proposals for the Process Separations program, which is part of the Chemical Process Systems cluster. The program supports research focused on novel methods and materials for separation processes central to industries such as chemical, biochemical, bioprocessing, materials, energy, and pharmaceuticals. Key research areas of interest include the design of scalable mass separating agents, understanding of interfacial thermodynamics and transport phenomena, and innovative approaches to reduce energy and materials requirements in the process industries. Proposals should address the novelty and potentially transformative nature of the work, as well as its importance in terms of engineering science and potential impact on society and/or industry. The typical award size for the program is around $100,000 per year, with a duration of one to three years. However, proposals requesting substantially higher amounts may be returned without review unless the applicant has prior consultation with the Program Director. Faculty Early Career Development (CAREER) program proposals are strongly encouraged, with a submission deadline in July each year.