Journal article Open Access

Lactic acid recovery from a model of Thermotoga neapolitana fermentation broth using ion exchange resins in batch and fixed-bed reactors

Luongo,Vincenzo; Palma, Angelo; Rene R, Eldon; Fontana, Angelo; Pirozzi, Francesco; Esposito, Giovanni; Lens, Piet N. L.


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    <subfield code="a">&lt;p&gt;This study focused on the integration of lactic acid adsorption and desorption onto commercially&lt;br&gt;
available resins in batch reactors with consequent scale-up in fixed-bed reactors. Amberlite&amp;reg; IRA-&lt;br&gt;
900, IRA-400, IRA-96 and IRA-67 were used as adsorbents for lactic acid recovery from solutions&lt;br&gt;
that mimic the fermentation broth of Thermotoga neapolitana. The best resins were further tested&lt;br&gt;
in adsorption&amp;ndash;desorption batch experiments, over 13 cycles, with IRA-67 showing an average&lt;br&gt;
removal efficiency of 97%. IRA-67 was tested in fixed-bed reactor experiments and an average&lt;br&gt;
desorption efficiency of 68% was achieved using three bed volumes of 0.5 M NaOH as the&lt;br&gt;
desorbing agent.&lt;/p&gt;</subfield>
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