Recovery of Salts from Synthetic Erythritol Culture Broth via Electrodialysis: An Alternative Strategy from the Bin to the Loop

Laura Daza-Serna, Katarina Knežević, Norbert Kreuzinger, Astrid Rosa Mach-Aigner, Robert Ludwig Mach, Jörg Krampe and Anton Friedl
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Laura Daza-Serna: Christian Doppler Laboratory for Optimized Expression of Carbohydrate-Active Enzymes, Research Division Biochemical Technology, Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, 1060 Vienna, Austria
Katarina Knežević: Institute for Water Quality and Resource Management, Technische Universität Wien, 1040 Vienna, Austria
Norbert Kreuzinger: Institute for Water Quality and Resource Management, Technische Universität Wien, 1040 Vienna, Austria
Astrid Rosa Mach-Aigner: Christian Doppler Laboratory for Optimized Expression of Carbohydrate-Active Enzymes, Research Division Biochemical Technology, Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, 1060 Vienna, Austria
Robert Ludwig Mach: Research Division Biochemical Technology, Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, 1060 Vienna, Austria
Jörg Krampe: Institute for Water Quality and Resource Management, Technische Universität Wien, 1040 Vienna, Austria
Anton Friedl: Research Division Bioresource and Plant Science, Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, 1060 Vienna, Austria

Sustainability, 2022, vol. 14, issue 2, 1-18

Abstract: Sustainability and circularity are currently two relevant drivers in the development and optimisation of industrial processes. This study assessed the use of electrodialysis (ED) to purify synthetic erythritol culture broth and for the recovery of the salts in solution, for minimising the generation of waste by representing an efficient alternative to remove ions, ensuring their recovery process contributing to reaching cleaner standards in erythritol production. Removal and recovery of ions was evaluated for synthetic erythritol culture broth at three different levels of complexity using a stepwise voltage in the experimental settings. ED was demonstrated to be a potential technology removing between 91.7–99.0% of ions from the synthetic culture broth, with 49–54% current efficiency. Besides this, further recovery of ions into the concentrated fraction was accomplished. The anions and cations were recovered in a second fraction reaching concentration factors between 1.5 to 2.5 times while observing low level of erythritol losses (<2%), with an energy consumption of 4.10 kWh/m 3 .

Keywords: electrodialysis; erythritol downstream; desalination; waste reduction; current efficiency (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:2:p:734-:d:721465

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