Silica-Supported Ionic Liquids for Heat-Powered Sorption Desalination

Ahmed Askalany; Christopher Olkis; Emilia Bramanti; Dmitry Lapshin; Luigi Calabrese; Edoardo Proverbio; Angelo Freni; Giulio Santori

doi:10.1021/acsami.9b07602

journal article·2019-10-09Open access

Silica-Supported Ionic Liquids for Heat-Powered Sorption Desalination

Ahmed Askalany, Christopher Olkis, Emilia Bramanti, Dmitry Lapshin, Luigi Calabrese, Edoardo Proverbio, Angelo Freni, Giulio Santori

ACS Applied Materials & Interfaces· Volume 11· Issue 40

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Abstract

This work investigates the application of novel sorption materials to heat-powered desalination systems. Two ionic liquids 1-ethyl-3-methylimidazolium acetate (Emim-Ac) and 1-ethyl-3-methylimidazolium methanesulfonate (Emim-Oms) were impregnated in two silica supports, namely, Syloid AL-1FP and Syloid 72FP. Emim-Ac and Emim-Oms composite sorbents have been compared on morphology, water vapor sorption equilibrium, and heat of sorption. Fourier-transform infrared spectroscopy shows that the ionic liquid partly self-organizes on the silica surface. When used in a sorption desalination process powered by low grade heat at 60 °C, these composites have exceptionally high theoretical working capacities ranging from 1 to 1.7 gwater gsorbent–1. Experimental tests on a lab scale desalinator show that Emim-Ac/Syloid 72FP in real operating conditions can produce 25 kgwater kgsorbent–1 day–1. To date, this yield is 2.5 times higher than the best achieved with silica gel.

Source: openalex_inverted_index · Quality: baseline

Research context

Composites

OpenAlex topics: Membrane-based Ion Separation Techniques · Membrane Separation Technologies · Ionic liquids properties and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Mechanical Engineering Department, Faculty of Industrial Education, Sohag University, Sohag 82524, Egypt

School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Sanderson Building, The King’s Buildings, Robert Stevenson Road, Edinburgh, Scotland EH9 3FB, U.K.

Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organometallici (CNR-ICCOM), Via G. Moruzzi, 1, Pisa 56124, Italy

Department of Engineering, University of Messina, Messina 98122, Italy

Funding

Research Councils UK

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