{"id":"https://openalex.org/keywords/nanofiltration","display_name":"nanofiltration","description":"A pressure-driven membrane filtration process that separates dissolved substances according to molecular size and charge.","display_name_alternatives":["nano-filtration","NF"],"ids":{"openalex":"https://openalex.org/keywords/nanofiltration","wikidata":"https://www.wikidata.org/wiki/Q1964676"},"primary_topic":{"id":"https://openalex.org/T10197","display_name":"Membrane Separation Technologies","score":0.6876,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10197","display_name":"Membrane Separation Technologies","score":0.6876,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"works_count":16969,"cited_by_count":443889,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/nanofiltration","updated_date":"2026-10-24T04:06:44","created_date":"2022-04-12T19:38:12"}
