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Pilot scale study: first demonstration of hydrophobic membranes for the removal of ammonia molecules from rendering condensate wastewater

Brennan, Brian orcid logoORCID: 0000-0003-1869-2140, Briciu Burghina, Ciprian Constantin orcid logoORCID: 0000-0001-8682-9116, Hickey, Sean, Abadie, Thomas, al Ma Awali, Sultan M., Delauré, Yan orcid logoORCID: 0000-0002-7151-9278, Durkan, John, Holland, Linda orcid logoORCID: 0000-0002-0103-0151, Quilty, Brid orcid logoORCID: 0000-0002-0786-3584, Tajparast, Mohammad orcid logoORCID: 0000-0001-6250-7876, Pulit, Casper, Fitzsimons, Lorna orcid logoORCID: 0000-0002-8783-3755, Nolan, Kieran orcid logoORCID: 0000-0002-7748-9452, Regan, Fiona orcid logoORCID: 0000-0002-8273-9970 and Lawler, Jenny orcid logoORCID: 0000-0001-9947-0958 (2020) Pilot scale study: first demonstration of hydrophobic membranes for the removal of ammonia molecules from rendering condensate wastewater. International Journal of Molecular Sciences, 21 (11). ISSN 1661-6596

Abstract
Hydrophobic membrane contactors represent a promising solution to the problem of recycling ammoniacal nitrogen (N-NH4) molecules from waste, water or wastewater resources. The process has been shown to work best with wastewater streams that present high N-NH4 concentrations, low buffering capacities and low total suspended solids. The removal of N-NH4 from rendering condensate, produced during heat treatment of waste animal tissue, was assessed in this research using a hydrophobic membrane contactor. This study investigates how the molecular composition of rendering condensate wastewater undergo changes in its chemistry in order to achieve suitability to be treated using hydrophobic membranes and form a suitable product. The main objective was to test the ammonia stripping technology using two types of hydrophobic membrane materials, polypropylene (PP) and polytetrafluoroethylene (PTFE) at pilot scale and carry out: (i) Process modification for NH3 molecule removal and (ii) product characterization from the process. Theresults demonstrate that PP membranesarenotcompatiblewiththecondensate wasteasit caused wetting. The PTFE membranes showed potential and had a longer lifetime than the PP membranes and removed upto64%ofNH3 moleculesfromthecondensate waste. The product formed contained a 30%concentrated ammonium sulphate salt which has a potential application as a fertilizer. This is the first demonstration of hydrophobic membrane contactors for treatment of condensate wastewater
Metadata
Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:ammonia; hydrophobic; membranes; polypropylene; polytetrafluoroethylene; rendering condensate; wastewater
Subjects:Physical Sciences > Chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
DCU Faculties and Schools > Faculty of Science and Health > School of Biotechnology
DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Institutes and Centres > Water Institute
Publisher:MDPI
Official URL:https://dx.doi.org/10.3390/ijms21113914
Copyright Information:© 2020 The Authors. Open Access (CC-BY 4.0)
ID Code:27490
Deposited On:04 Aug 2022 17:31 by Thomas Murtagh . Last Modified 05 Oct 2022 12:11
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