Volatile fatty acid adsorption on anion exchange resins: kinetics and selective recovery of acetic acid |
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| Authors: | Tejaswini Eregowda Jukka Rintala Piet N. L. Lens |
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| Affiliation: | 1. UNESCO-IHE, Institute for Water Education, Delft, The Netherlands;2. Department of Chemistry and Bioengineering, Tampere University of Technology, Tampere, Finland!["ORCID]("//:0" "\"ORCID") https://orcid.org/0000-0002-1442-8337;3. Department of Chemistry and Bioengineering, Tampere University of Technology, Tampere, Finlandhttps://orcid.org/0000-0003-3949-3810;4. Department of Chemistry and Bioengineering, Tampere University of Technology, Tampere, Finlandhttps://orcid.org/0000-0002-5825-878X |
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| Abstract: | ABSTRACTThe removal of volatile fatty acids was examined through adsorption on anion exchange resins in batch systems. During the initial screening step, granular activated carbon and 11 anion exchange resins were tested and the resins Amberlite IRA-67 and Dowex optipore L-493 were chosen for further investigation. The adsorption kinetics and diffusion mechanism and adsorption isotherms of the two resins for VFA were evaluated. Based on the selective adsorption capacity of the resins, a sequential batch process was tested to achieve separation of acetic acid from the VFA mixture and selective recoveries > 85% acetic acid and ~ 75% propionic acid was achieved. |
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| Keywords: | Volatile fatty acids selective recovery anion-exchange resins Brunauer-Emmett-Teller model |
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!["ORCID]({"type":"image","src":"/templates/jsp/images/orcid.png"} "\"ORCID")
https://orcid.org/0000-0002-1442-8337;3. Department of Chemistry and Bioengineering, Tampere University of Technology, Tampere, Finland