Lactic acid recovery from a model of Thermotoga neapolitana fermentation broth using ion exchange resins in batch and fixed-bed reactors. Issue 6 (13th April 2019)

• Record Type: Journal Article
• Authors: Luongo, Vincenzo; Palma, Angelo; Rene, Eldon R.; Fontana, Angelo; Pirozzi, Francesco; Esposito, Giovanni; Lens, Piet N. L.
• Is Part Of: Separation science and technology. Volume 54:Issue 6(2019)
• Page Start: 1008
• Page End: 1025
• Publication Date: 2019-04-13
• Subjects: Lactic acid -- anionic exchange resins -- adsorption -- desorption -- fixed bed reactor; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2018.1520727
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: This study focused on the integration of lactic acid adsorption and desorption onto commercially available resins in batch reactors with consequent scale-up in fixed-bed reactors. Amberlite® IRA-900, IRA-400, IRA-96 and IRA-67 were used as adsorbents for lactic acid recovery from solutions that mimic the fermentation broth of Thermotoga neapolitana . The best resins were further tested in adsorption–desorption batch experiments, over 13 cycles, with IRA-67 showing an average removal efficiency of 97%. IRA-67 was tested in fixed-bed reactor experiments and an average desorption efficiency of 68% was achieved using three bed volumes of 0.5 M NaOH as the desorbing agent.