MIL-160(Al) MOF's potential in adsorptive water harvesting

• Type: Article in International Scientific Journal
• Date: 2021

Authors

M. P. Silva (Author) Other; Ana M. Ribeiro (Author) FEUP; Claúdia G. Silva (Author) FEUP; Ildefonso Nogueira (Author) FEUP; Kyung-Ho Cho (Author) Other; U.-Hwang Lee (Author) Other; Joaquim Luís Faria (Author) FEUP; J. L. loureiro (Author) Other; Jon-San Chang (Author) Other; Alírio E. Rodrigues (Author) FEUP; Alexandre Ferreira (Author) FEUP

Journal

Title: Adsorption

Vol. 27

Pages: 213-226

ISSN: 0929-5607

Publisher: Springer Nature

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Other information

Authenticus ID: P-00T-9FN

DOI: 10.1007/s10450-020-00286-5

Abstract (EN): The water crisis is one of the main global risks based on its societal impact, particularly the access to safe drinking water in regions with a dry (arid) or mainly dry (semi-arid) climate. Several techniques are being developed, namely the use of regenerative desiccant (e.g., MOFs) to water capture through adsorption processes. MIL-160(Al) belongs to the fumarate-based MOFs family, and it is one of the most promising MOFs for water harvesting and heat transformation applications. In this study, the potential of MIL-160(Al) as an adsorbent for water sorption based applications was evaluated. For this purpose, adsorption equilibrium isotherms, dynamic adsorption experiments, and MIL-160(Al) granules characterization were performed. H2O vapor adsorption equilibrium isotherm was studied at 303, 323, and 343 K presenting a type V shape and was fitted using the Cooperative Multimolecular Sorption model and Polanyi's theory model. Additionally, CO2, N-2, and O-2 adsorption equilibrium isotherms were also measured but at 283, 303, and 323 K, presenting the following order of adsorption affinity: CO2 > O-2 > N-2. Water vapor adsorption breakthrough experiments corroborate the shape of the water adsorption equilibrium isotherms on MIL-160(Al). Water co-adsorption history proved that the presence of the other air components (CO2, O-2, and N-2) does not affect water adsorption behavior on MIL-160(Al). DRIFTS measurements proved the MIL-160(Al) structure remains stable during the water vapor exposure. The optimization of the TSA process allowed us to achieve maximum H2O productivity of 305 L center dot day(-1)center dot ton(-1) for a regeneration temperature of 353 K and flow rate equal to 0.50 m(3)center dot s(-1).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14