Production and purification of phytic acid from distillery wastewater via ion exchange
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
Production and purification of phytic acid from distillery wastewater via ion exchange
Published Date
2016-12
Publisher
Type
Presentation
Report
Report
Abstract
Phytate (inositol hexakisphosphate) is the major form of organic phosphorus present in corn. Phytate is partially degraded during the corn ethanol fermentation process and it still represents over 40% of the phosphorus present in the main co-product generated – distiller’s grains. Phytate has a high market value and its extraction can help decrease phosphorus pollution from distiller’s grains use as animal feed. An ion exchange system has been developed for phytate extraction and purification using the ethanol co-products streams. The feedstock rich in phytate for this study is complex and presents different competing ions for the ion exchange system. The anion exchange resin used is selective for phytate, but is also able to adsorb sulfate, inorganic phosphate, and nitrate – all of which are as concentrated as phytate in the feedstock stream. This study evaluated some of the experimental conditions for better understanding the phytate extraction and purification system, and include the development of multi-component isotherms and multi-anion adsorption kinetics. The adsorption breakthrough for the four anions has also been evaluated on a packed-bed chromatographic column, on a similar design that would be used for larger scale approaches. Desorption from fully loaded resin, followed by a phytate precipitation step, provided salts with purities higher than 90%. This system can, thus, lead to a potential industrial application in order to enhance the profitability of ethanol plants, and simultaneously providing a solution for phosphorus pollution from distiller’s grains use.
Keywords
Description
This project was developed in Dr. Bo Hu's bioprocessing lab in the Department of Bioproducts and Biosystems at the University of Minnesota under supervision of Cristiano Rodrigues Reis.
Related to
Replaces
License
Series/Report Number
Funding information
This research was supported by the Undergraduate Research Opportunities Program (UROP).
Isbn identifier
Doi identifier
Previously Published Citation
Suggested citation
Reyes Gaibor, Felipe, S; Rodrigues Reis, Cristiano. (2016). Production and purification of phytic acid from distillery wastewater via ion exchange. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/183267.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.