Academic Journal
Nanoadsorbents for oilfield produced water treatment: synthesis of silica and magnetite nanoparticles for naphthenic acid removal.
| Τίτλος: | Nanoadsorbents for oilfield produced water treatment: synthesis of silica and magnetite nanoparticles for naphthenic acid removal. |
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| Συγγραφείς: | Candido JDC; Chemical Engineering Program, COPPE, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil. jcandido@peq.coppe.ufrj.br., Teixeira JVM; Escola de Química, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil., Weschenfelder SEP; Centro de Pesquisas, Desenvolvimento e Inovação Leopoldo Américo Miguez de Mello, Petrobras, Rio de Janeiro, Brazil., Ferraz HC; Chemical Engineering Program, COPPE, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil. |
| Πηγή: | Environmental science and pollution research international [Environ Sci Pollut Res Int] 2026 Sep; Vol. 33 (33), pp. 16507-16527. Date of Electronic Publication: 2026 Feb 21. |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Springer Country of Publication: Germany NLM ID: 9441769 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1614-7499 (Electronic) Linking ISSN: 09441344 NLM ISO Abbreviation: Environ Sci Pollut Res Int Subsets: MEDLINE |
| Imprint Name(s): | Publication: <2013->: Berlin : Springer Original Publication: Landsberg, Germany : Ecomed |
| Ιατρικοί όροι (MeSH): | Silicon Dioxide*/chemistry , Carboxylic Acids*/chemistry , Water Pollutants, Chemical*/chemistry , Magnetite Nanoparticles*/chemistry , Water Purification*/methods, Nanoparticles/chemistry ; Adsorption ; Oil and Gas Fields ; Hydrogen-Ion Concentration |
| Περίληψη: | The treatment of produced water, generated in large volumes during oil and gas production, poses a significant environmental challenge faced by the petroleum industry, particularly due to the presence of dissolved organic contaminants such as naphthenic acids. This study reports the synthesis and characterization of nanoadsorbents based on silica and magnetic nanoparticles for application in the polishing stage of produced water treatment, specifically targeting the removal of naphthenic acids. Silica nanoparticles were synthesized using a modified Stöber method, while magnetic nanoparticles were obtained through a coprecipitation method. The surface properties of these nanoparticles were modified to enhance their interaction with naphthenic acids, as confirmed by changes in particle size, as well as their chemical and surface properties. In batch adsorption experiments using synthetic produced water, silica nanoparticles with hydrophobic surface groups exhibited the highest benzoic acid adsorption capacity, reaching 21.9 mg/g. These results highlight the potential of engineered nanomaterials as effective adsorbents, where hydrophobic interactions dominate the adsorption mechanism under the evaluated conditions. An inverse relationship between pH and removal efficiency was observed, and it was demonstrated that the removal efficiency remains consistent across the industrially relevant pH range of 5.5 to 8. Furthermore, the SiO (© 2026. The Author(s).) |
| Competing Interests: | Declarations. Ethics approval: This is not applicable. Consent to participate: This is not applicable. Consent for publication: This is not applicable. Competing interests: The authors declare no competing interests. |
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| Contributed Indexing: | Keywords: Core-shell magnetic nanoparticle; Magnetite nanoparticle; Nanoadsorbent; Naphthenic acid; Oilfield produced water; Silica nanoparticle; Water-soluble organics (WSO) |
| Substance Nomenclature: | 7631-86-9 (Silicon Dioxide) 0 (Carboxylic Acids) YNM5U6B7A4 (naphthenic acid) 0 (Water Pollutants, Chemical) 0 (Magnetite Nanoparticles) |
| Entry Date(s): | Date Created: 20260221 Date Completed: 20261008 Latest Revision: 20261011 |
| Update Code: | 20261011 |
| PubMed Central ID: | PMC13649816 |
| DOI: | 10.1007/s11356-026-37530-4 |
| PMID: | 41721953 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1614-7499 |
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| DOI: | 10.1007/s11356-026-37530-4 |