Environmentally sustainable production of bio-based mineral acids
The production of bio-based mineral acids, using hydrochloric acid as a model, was revisited here. Simple, affordable, renewable and non-hazardous reactants –namely sodium chloride and oxalic acid– enabled the preparation of concentrated solutions of hydrochloric acid (6 N) in good yields and in mil...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Cleaner Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666790825001831 |
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| author | Claire M. Grison Claude Grison |
| author_facet | Claire M. Grison Claude Grison |
| author_sort | Claire M. Grison |
| collection | DOAJ |
| description | The production of bio-based mineral acids, using hydrochloric acid as a model, was revisited here. Simple, affordable, renewable and non-hazardous reactants –namely sodium chloride and oxalic acid– enabled the preparation of concentrated solutions of hydrochloric acid (6 N) in good yields and in mild conditions, including at pilot scale. The process was easily implemented by mixing the two reactants in refluxing water, followed by azeotropic distillation of the reaction mixture. This approach was extended to other mineral acids such as HBr, HI and HNO3, using the corresponding sodium salt. The described process was compared with current industrial methods for HCl production, highlighting its efficiency, improved safety through the elimination of hazardous substances such as chlorine or concentrated sulfuric acid and its precursors, and enhanced sustainability through reduced of energy consumption and the exclusive use of bio-based reactants. This process exemplifies how green chemistry can contribute to cleaner production by addressing both environmental and sustainability challenges. |
| format | Article |
| id | doaj-art-a524be88f7904e16a9ba66c1c59a3d51 |
| institution | Matheson Library |
| issn | 2666-7908 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cleaner Engineering and Technology |
| spelling | doaj-art-a524be88f7904e16a9ba66c1c59a3d512025-07-31T04:54:00ZengElsevierCleaner Engineering and Technology2666-79082025-09-0128101060Environmentally sustainable production of bio-based mineral acidsClaire M. Grison0Claude Grison1Laboratoire de Chimie Bio-inspirée et Innovations Ecologiques, UMR 5021, Centre National de la Recherche Scientifique – Université de Montpellier, Grabels, 34790, FranceCorresponding author.; Laboratoire de Chimie Bio-inspirée et Innovations Ecologiques, UMR 5021, Centre National de la Recherche Scientifique – Université de Montpellier, Grabels, 34790, FranceThe production of bio-based mineral acids, using hydrochloric acid as a model, was revisited here. Simple, affordable, renewable and non-hazardous reactants –namely sodium chloride and oxalic acid– enabled the preparation of concentrated solutions of hydrochloric acid (6 N) in good yields and in mild conditions, including at pilot scale. The process was easily implemented by mixing the two reactants in refluxing water, followed by azeotropic distillation of the reaction mixture. This approach was extended to other mineral acids such as HBr, HI and HNO3, using the corresponding sodium salt. The described process was compared with current industrial methods for HCl production, highlighting its efficiency, improved safety through the elimination of hazardous substances such as chlorine or concentrated sulfuric acid and its precursors, and enhanced sustainability through reduced of energy consumption and the exclusive use of bio-based reactants. This process exemplifies how green chemistry can contribute to cleaner production by addressing both environmental and sustainability challenges.http://www.sciencedirect.com/science/article/pii/S2666790825001831Cleaner productionBrønsted acidsOxalic acidBio-based mineral acidsSustainable processesComparative environmental analysis |
| spellingShingle | Claire M. Grison Claude Grison Environmentally sustainable production of bio-based mineral acids Cleaner Engineering and Technology Cleaner production Brønsted acids Oxalic acid Bio-based mineral acids Sustainable processes Comparative environmental analysis |
| title | Environmentally sustainable production of bio-based mineral acids |
| title_full | Environmentally sustainable production of bio-based mineral acids |
| title_fullStr | Environmentally sustainable production of bio-based mineral acids |
| title_full_unstemmed | Environmentally sustainable production of bio-based mineral acids |
| title_short | Environmentally sustainable production of bio-based mineral acids |
| title_sort | environmentally sustainable production of bio based mineral acids |
| topic | Cleaner production Brønsted acids Oxalic acid Bio-based mineral acids Sustainable processes Comparative environmental analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2666790825001831 |
| work_keys_str_mv | AT clairemgrison environmentallysustainableproductionofbiobasedmineralacids AT claudegrison environmentallysustainableproductionofbiobasedmineralacids |