Silica gel-MIL 100(Fe) composite adsorbents for ultra-low heat-driven atmospheric water harvester

Hisham Maher, Tahmid Hasan Rupam, Kaiser Ahmed Rocky, Ramadan Bassiouny, Bidyut Baran Saha

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


The present study focuses on the synthesis and characterization of new composites comprising of RD silica gel and metal-organic framework (MOF) MIL-100(Fe) to upgrade the performance of the adsorption-based atmospheric water harvesting system. The impact of adding MIL-100(Fe) on the porous properties, thermal conductivity, and water adsorption characteristics of the composites has been experimentally investigated. Furthermore, three performance indicators are introduced to investigate the performance of the system, including net adsorbate uptake (Δq) and the efficiency estimation using two different approaches. Results showed that the maximum increment in the thermal conductivity was found in the composite having the highest concentration of MIL 100(Fe) (69 wt%). Thermodynamic cycles were drawn to show the performance of the composites with heat source temperatures of 50 °C and 70 °C. A composite of 29 % RD silica gel, 69 % MIL 100(Fe), and 2 % PVP showed the highest value of Δq (213.8 % increment over parent RD silica gel). In contrast, the efficiency of the system was enhanced up to 187 % than that of the silica gel-based AWH system.

Original languageEnglish
Article number121741
Publication statusPublished - Jan 1 2021

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Modelling and Simulation
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Pollution
  • Energy(all)
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law
  • Electrical and Electronic Engineering


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