TY - JOUR

T1 - Potable water extraction from the atmosphere: Potential of MOFs

AU - Gordeeva, Larisa G.

AU - Solovyeva, Marina V.

AU - Sapienza, Alessio

AU - Aristov, Yuri I.

PY - 2020/4

Y1 - 2020/4

N2 - This communication addresses the Adsorptive Extraction of potable Water from the Atmosphere (AWEA) in arid areas using solar energy. The method includes a) adsorption of water vapor from the air at night-time, and b) desorption of the stored water and its subsequent collection in a condenser in the day-time. Metal-organic frameworks (MOFs), being crystalline porous solids with unique adsorption properties, might provide a promising avenue for AWEA. First, the thermodynamic requirements for adsorbent optimal for AWEA are formulated. The optimal adsorbent (OA) has energy different adsorption centers with the affinity distributed in a wide range of adsorption potential between ΔFad and ΔFre, corresponding to the adsorption and regeneration stages, respectively. For three arid climatic zones (the Sahara Desert, Saudi Arabia and Central Australia), the quantitative requirements to the OA are formulated in terms of the ΔFad and ΔFre values. The selection of MOFs, promising for the AWEA, is carried out. The most promising MOFs for Australia are MIL-101(Cr), Co2Cl2(BTDD), and MIL-101(Cr)–SO3H. MIL-160 and CAU-10(pydc) are appropriate for Saudi Arabia and Sahara. They exchange 0.34–1.6 (g water)/(g adsorbent) and allow getting the fractions δex = 0.78–0.93 of water extraction and δcol = 0.75–0.90 of water collection at the regeneration temperature 75–100 °C.

AB - This communication addresses the Adsorptive Extraction of potable Water from the Atmosphere (AWEA) in arid areas using solar energy. The method includes a) adsorption of water vapor from the air at night-time, and b) desorption of the stored water and its subsequent collection in a condenser in the day-time. Metal-organic frameworks (MOFs), being crystalline porous solids with unique adsorption properties, might provide a promising avenue for AWEA. First, the thermodynamic requirements for adsorbent optimal for AWEA are formulated. The optimal adsorbent (OA) has energy different adsorption centers with the affinity distributed in a wide range of adsorption potential between ΔFad and ΔFre, corresponding to the adsorption and regeneration stages, respectively. For three arid climatic zones (the Sahara Desert, Saudi Arabia and Central Australia), the quantitative requirements to the OA are formulated in terms of the ΔFad and ΔFre values. The selection of MOFs, promising for the AWEA, is carried out. The most promising MOFs for Australia are MIL-101(Cr), Co2Cl2(BTDD), and MIL-101(Cr)–SO3H. MIL-160 and CAU-10(pydc) are appropriate for Saudi Arabia and Sahara. They exchange 0.34–1.6 (g water)/(g adsorbent) and allow getting the fractions δex = 0.78–0.93 of water extraction and δcol = 0.75–0.90 of water collection at the regeneration temperature 75–100 °C.

KW - Adsorption

KW - Metal-organic frameworks

KW - Water collection fraction

KW - Water extraction fraction

KW - Water harvesting from air

KW - DESIGN

KW - ADSORBENTS

KW - ADSORPTION HEAT TRANSFORMATION

KW - SORBENTS

KW - AIR

KW - HOT

KW - METAL-ORGANIC FRAMEWORKS

KW - PROMISING MATERIAL

KW - EQUILIBRIUM

KW - CYCLE

UR - http://www.scopus.com/inward/record.url?scp=85076040894&partnerID=8YFLogxK

U2 - 10.1016/j.renene.2019.12.003

DO - 10.1016/j.renene.2019.12.003

M3 - Article

AN - SCOPUS:85076040894

VL - 148

SP - 72

EP - 80

JO - Renewable Energy

JF - Renewable Energy

SN - 0960-1481

ER -