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Highly selective trace ammonium removal from dairy wastewater streams by aluminosilicate materials
Elaine O’Connor,Oisin N. Kavanagh,Drahomir Chovan,David G. Madden,Patrick Cronin,Ahmad B. Albadarin,Gavin M. Walker,Alan Ryan 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.86 No.-
Water is a key solvent, fundamental to supporting life on earth. It is equally important in many industrialprocesses, particularly within agricultural and pharmaceutical industries, which are major drivers of theglobal economy. The results of water contamination by common activity in these industries is well knownand EU Water Quality Directives and Associated Regulations mandate that NH4+ concentrations ineffluent streams should not exceed 0.3 mg L 1, this has put immense pressure on organisations andindividuals operating in these industries. As the environmental andfinancial costs associated with waterpurification begin to mount, there is a great need for novel processes and materials (particularlyrenewable) to transform the industry. Current solutions have evolved from combating toxic sludge to theuse of membrane technology, but it is well known that the production of these membrane technologiescreates a large environmental footprint. Zeolites could provide an answer; their pore size and chemistryenable efficient removal of aqueous based cations via simple ion exchange processes. Herein, wedemonstrate efficient removal of NH4+ via both static and dynamic methodology for industrialapplication. Molecular modelling was used to determine the cation–framework interactions which willenable customisation and design of superior sorbents for NH4+ capture in wastewater.
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