{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:59:29Z","timestamp":1760147969238,"version":"build-2065373602"},"reference-count":73,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,3,17]],"date-time":"2023-03-17T00:00:00Z","timestamp":1679011200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Membranes"],"abstract":"<jats:p>This paper presents the preparation and characterization of composite membranes based on chitosan (Chi), sulfonated ethylene\u2013propylene\u2013diene terpolymer (sEPDM), and polypropylene (PPy), and designed to capture hydrogen sulfide. The Chi\/sEPDM\/PPy composite membranes were prepared through controlled evaporation of a toluene dispersion layer of Chi:sEPDM 1;1, w\/w, deposited by immersion and under a slight vacuum (100 mmHg) on a PPy hollow fiber support. The composite membranes were characterized morphologically, structurally, and thermally, but also from the point of view of their performance in the process of hydrogen sulfide sequestration in an acidic media solution with metallic ion content (Cu2+, Cd2+, Pb2+, and\/or Zn2+). The operational parameters of the pertraction were the pH, pM, matrix gas flow rate, and composition. The results of pertraction from synthetic gases mixture (nitrogen, methane, carbon dioxide) indicated an efficient removal of hydrogen sulfide through the prepared composite membranes, as well as its immobilization as sulfides. The sequestration and the recuperative separation, as sulfides from an acid medium, of the hydrogen sulfide reached up to 96%, decreasing in the order: CuS &gt; PbS &gt; CdS &gt; ZnS.<\/jats:p>","DOI":"10.3390\/membranes13030350","type":"journal-article","created":{"date-parts":[[2023,3,20]],"date-time":"2023-03-20T03:30:31Z","timestamp":1679283031000},"page":"350","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Hydrogen Sulphide Sequestration with Metallic Ions in Acidic Media Based on Chitosan\/sEPDM\/Polypropylene Composites Hollow Fiber Membranes System"],"prefix":"10.3390","volume":"13","author":[{"given":"Dumitru","family":"Pa\u0219cu","sequence":"first","affiliation":[{"name":"Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8891-8948","authenticated-orcid":false,"given":"Aurelia Cristina","family":"Nechifor","sequence":"additional","affiliation":[{"name":"Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4263-7048","authenticated-orcid":false,"given":"Vlad-Alexandru","family":"Grosu","sequence":"additional","affiliation":[{"name":"Department of Electronic Technology and Reliability, Faculty of Electronics, Telecommunications and Information Technology, University Politehnica of Bucharest, 061071 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8145-1094","authenticated-orcid":false,"given":"Ovidiu Cristian","family":"Oprea","sequence":"additional","affiliation":[{"name":"Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Szidonia-Katalin","family":"Tanczos","sequence":"additional","affiliation":[{"name":"Department of Bioengineering, University Sapientia of Miercurea-Ciuc, 500104 Miercurea-Ciuc, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Geani Teodor","family":"Man","sequence":"additional","affiliation":[{"name":"Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3781-5222","authenticated-orcid":false,"given":"Florina","family":"Dumitru","sequence":"additional","affiliation":[{"name":"Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexandra Raluca","family":"Grosu","sequence":"additional","affiliation":[{"name":"Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7148-926X","authenticated-orcid":false,"given":"Gheorghe","family":"Nechifor","sequence":"additional","affiliation":[{"name":"Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 011061 Bucharest, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Nechifor, A.C., Cotorcea, S., Bung\u0103u, C., Albu, P.C., Pa\u0219cu, D., Oprea, O., Grosu, A.R., P\u00eer\u021bac, A., and Nechifor, G. 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