TY - GEN
T1 - Double Layer Graphene Oxide Loaded With Propylammonium Nitrate for Selective Adsorption of Inorganic Salts
AU - Abukhalifeh, H.
AU - Al Nashef, I. M.
AU - Zhuman, B.
AU - Zuburtikudis, I.
N1 - Funding Information:
The financial support of the Abu Dhabi Department of Education and Knowledge (ADEK) is greatly acknowledged (ADEK Award for Research Excellence (AARE-2018)). Special thanks to Versarien, 2-D Tech Limited for providing double layer graphene oxide for current research.
Publisher Copyright:
© 2022, Avestia Publishing. All rights reserved.
PY - 2022
Y1 - 2022
N2 - Due to freshwater scarcity, desalination process gains more importance. Developing a green and environmentally friendly solution for extraction of the salts from the seawater becomes a major challenge nowadays. Among all desalination processes, membrane desalination is widely used. About 80 % of total desalination plants are based on reverse osmosis (RO) worldwide. However, RO desalination is considered to be costly owing to the short lifetime of the membranes and high replacement costs. Membrane fouling is one of the main causes of this limitation. Membrane inorganic fouling can be easily affected by calcium and magnesium inorganic salts. Hence, it is important to develop an efficient adsorbent used in RO pretreatment processes to address the problem of inorganic fouling. The great advantages offered by nanomaterials and green solvents allow the creation of new functional materials for inorganic salt adsorption. Ionic liquids (ILs) comprising of an organic cation and an organic or inorganic anion, exhibit superior characteristics and are used widely for different applications, including separation and extraction processes of salts and of several heavy metals in the seawater. However, ILs which have good solubility of inorganic salts are mostly hydrophilic. Therefore, cross-contamination of the pre-treatment water during the extraction process can occur. However, if ILs are supported on carbon nanostructures (CNS), as graphene oxide (GO) or other types of CNS, this can be avoided. As a result, this will reduce the operational costs of the plants by decreasing the amount of inorganic fouling in the membranes. Experimental findings showed that GO modified with IL can successfully adsorb CaCl2, MgCl2 and NaCl salts. Physical functionalization has been confirmed using thermal gravimetric analysis (TGA) and Raman Spectroscopy analysis. Moreover, leaching of IL from GO has been studied using Total Organic Carbon (TOC).
AB - Due to freshwater scarcity, desalination process gains more importance. Developing a green and environmentally friendly solution for extraction of the salts from the seawater becomes a major challenge nowadays. Among all desalination processes, membrane desalination is widely used. About 80 % of total desalination plants are based on reverse osmosis (RO) worldwide. However, RO desalination is considered to be costly owing to the short lifetime of the membranes and high replacement costs. Membrane fouling is one of the main causes of this limitation. Membrane inorganic fouling can be easily affected by calcium and magnesium inorganic salts. Hence, it is important to develop an efficient adsorbent used in RO pretreatment processes to address the problem of inorganic fouling. The great advantages offered by nanomaterials and green solvents allow the creation of new functional materials for inorganic salt adsorption. Ionic liquids (ILs) comprising of an organic cation and an organic or inorganic anion, exhibit superior characteristics and are used widely for different applications, including separation and extraction processes of salts and of several heavy metals in the seawater. However, ILs which have good solubility of inorganic salts are mostly hydrophilic. Therefore, cross-contamination of the pre-treatment water during the extraction process can occur. However, if ILs are supported on carbon nanostructures (CNS), as graphene oxide (GO) or other types of CNS, this can be avoided. As a result, this will reduce the operational costs of the plants by decreasing the amount of inorganic fouling in the membranes. Experimental findings showed that GO modified with IL can successfully adsorb CaCl2, MgCl2 and NaCl salts. Physical functionalization has been confirmed using thermal gravimetric analysis (TGA) and Raman Spectroscopy analysis. Moreover, leaching of IL from GO has been studied using Total Organic Carbon (TOC).
KW - desalination
KW - inorganic salts
KW - ionic liquids
KW - pre-treatment
KW - words: graphene oxide
UR - http://www.scopus.com/inward/record.url?scp=85144669028&partnerID=8YFLogxK
U2 - 10.11159/icnnfc22.147
DO - 10.11159/icnnfc22.147
M3 - Conference contribution
AN - SCOPUS:85144669028
SN - 9781990800016
T3 - World Congress on Recent Advances in Nanotechnology
BT - Proceedings of the 7th World Congress on Recent Advances in Nanotechnology, RAN 2022
A2 - Ensinger, Wolfgang
A2 - Jampilek, Josef
A2 - Rodrigues, João Manuel Cunha
A2 - Bañobre-López, Manuel
A2 - Lima, Sofia
T2 - 7th World Congress on Recent Advances in Nanotechnology, RAN 2022
Y2 - 4 April 2022 through 6 April 2022
ER -
