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EUBCE 2024 - Alejandro MOURE ABELENDA - Distillation of Anaerobic Digestate to Isolate Ammonium Bicarbonate Concentrated Solution

Distillation of Anaerobic Digestate to Isolate Ammonium Bicarbonate Concentrated Solution

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Integrated biorefineries and biorefinery processes

Distillation of Anaerobic Digestate to Isolate Ammonium Bicarbonate Concentrated Solution

Short Introductive summary

The present work investigated classical distillation as a simple and efficient technology for valorising ammoniacal nitrogen (NH4+-N) in anaerobic digestate by CO2 fixation. Different types of anaerobic digestates were considered for the present investigation: a food waste digestate (FWD) and an agrowaste digestate (AWD). The FWD had more than double NH4+-N than the AWD, due to the greater content of amino acids in the feedstock. The processing of the AWD and FWD (whole digestates, comprised of the solid and liquid fractions, and the liquid fractions alone (i.e., liquors)) via batch reactive distillation were evaluated with the apparatus that can be divided into reboiler and condenser, which would be comparable to at least 2 plates of a distillation column. The composition of the crystals of inorganic fertilizer was confirmed with the Cary 630 Fourier-Transform Infrared Spectrometer of Agilent Technologies, with Attenuated Total Reflectance sampling module. The change in the composition of the anaerobic digestate for being subjected to the distillation process was characterized with a titration methodology.

Presenter

Moderator portrait

Alejandro MOURE ABELENDA

University of Santiago de Compostela, Chemical Engineering Dpt., SPAIN

Presenter's biography

Juan de la Cierva Postdoctoral Fellow at University of Santiago de Compostela Doctoral Prize of Engineering and Physical Sciences Research Council at Lancaster University

Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited


Co-authors:

A. Moure Abelenda, Universidade de Santiago de Compostela, Santiago de Compostela, SPAIN
V. Yesodharan, Universidade de Santiago de Compostela, Santiago de Compostela, SPAIN
F. Aiouache, Lancaster University, Lancaster, UNITED KINGDOM
P. M. Bello Bugallo, Universidade de Santiago de Compostela, Santiago de Compostela, SPAIN

Session reference: 3CV.4.17