Experimental study of isotherms and kinetics for adsorption of water on Aluminium Fumarate

Teo, How Wei Benjamin; Chakraborty, Anutosh; Kitagawa, Yuji; Kayal, Sibnath

doi:10.1016/j.ijheatmasstransfer.2017.06.086

Cited by 77 publications

(35 citation statements)

References 29 publications

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“…The thermogravimetric analysis (Figure S8, Supporting Information) also confirms that the rapid water releasing process takes place at temperature near 60 °C. A comparative chart of the adsorption capacity and regeneration temperature of the Cu‐complex with other reported water harvesting materials including MIL‐100(Al), [ 31 ] carbon aerogel, [ 32 ] MIL‐101(Cr), [ 33 ] MOF‐801, [ 34 ] AlPO 4 ‐LTA, [ 35 ] SiO 2 aerogel, [ 36 ] and Al‐fumarate [ 37 ] are shown in Figure 2c and Table S1, Supporting Information. Among these materials, the as‐prepared Cu‐complex with adsorption capacity of up to 3.0 g g −1 and regeneration temperature as low as 60 °C has the greatest potential to become an adsorbent for harvesting atmospheric water.…”

Section: Methodsmentioning

confidence: 99%

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

et al. 2020

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The earth's atmosphere houses an enormous amount of water, which could be effectively exploited for a plethora of applications. While the development of materials for harnessing this abundant resource has gained impetus in recent years, limited efforts have been devoted to in‐depth research on their agricultural applications. Herein, a novel copper(II)–ethanolamine complex (Cu‐complex), which has a maximum water uptake of up to 300% and a water production rate of 2.24 g g−1 h−1 under natural sunlight, is reported. As a proof‐of‐concept application, using this material, a fully automated and self‐sustainable solar‐powered SmartFarm device is developed. The Cu‐complex harvests atmospheric water during the night, stores the adsorbed water within, and efficiently releases the adsorbed water during the day when the device is exposed to sunlight. The water harvesting and irrigation process can be fine‐tuned to suit different types of plants and local climates for an optimal cultivation. With the SmartFarm in operation, the demand for freshwater for irrigation could be greatly reduced and urban farming techniques such as large‐scale rooftop farming could be promoted with a view of alleviating both water and food scarcity in the near future.

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Section: Methodsmentioning

confidence: 99%

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

et al. 2020

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“…The water isotherms used for COP calculation is from various literature sources: CAU-10-H, 200 CAU-23, 99 MIL-160, 100 MOF-841, 75 CUK-1, 205 MOF-801, 334 AlPO-LTA, 338 and Al-Fum. 265 , 348 …”

Section: Applications and Performance Assessmentmentioning

confidence: 99%

Water and Metal–Organic Frameworks: From Interaction toward Utilization

2020

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The steep stepwise uptake of water vapor and easy release at low relative pressures and moderate temperatures together with high working capacities make metal–organic frameworks (MOFs) attractive, promising materials for energy efficient applications in adsorption devices for humidity control (evaporation and condensation processes) and heat reallocation (heating and cooling) by utilizing water as benign sorptive and low-grade renewable or waste heat. Emerging MOF-based process applications covered are desiccation, heat pumps/chillers, water harvesting, air conditioning, and desalination. Governing parameters of the intrinsic sorption properties and stability under humid conditions and cyclic operation are identified. Transport of mass and heat in MOF structures, at least as important, is still an underexposed topic. Essential engineering elements of operation and implementation are presented. An update on stability of MOFs in water vapor and liquid systems is provided, and a suite of 18 MOFs are identified for selective use in heat pumps and chillers, while several can be used for air conditioning, water harvesting, and desalination. Most applications with MOFs are still in an exploratory state. An outlook is given for further R&D to realize these applications, providing essential kinetic parameters, performing smart engineering in the design of systems, and conceptual process designs to benchmark them against existing technologies. A concerted effort bridging chemistry, materials science, and engineering is required.

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“…In order to better determine the adsorption process, an adsorption isotherm model was used to describe the equilibrium relationship and the affinity between the adsorbent and the adsorbant and to investigate the adsorption capacity and surface characteristics of the adsorbent. In the present study, both linear Langmuir and Freundlich adsorption isotherm model formula (1) and formula (2) [38][39][40] were used to describe the adsorption data.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Study on adsorption of methylene blue by a novel composite material of TiO₂ and alum sludge

et al. 2018

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A composite material of TiO 2 and alum sludge (TiO 2 @AS) is reported in this paper. The samples of alum sludge (AS) and TiO 2 @AS were characterized using a field emission scanning electron microscope (FE-SEM), an energy dispersive spectrometer (EDS) and an Ultima IV X-ray diffractometer (XRD). In order to study the adsorption capacity and the adsorption mechanism of methylene blue by TiO 2 @AS in aqueous solution, three indexes -pH, adsorbent dosage and initial concentration of methylene bluewere investigated to evaluate the adsorption capacity of TiO 2 @AS. Moreover, thermodynamic, kinetic and isothermal model analyses of the adsorption process were carried out. The results showed that pH has little effect on the adsorption capacity. The maximum adsorption efficiency occurred at an optimized pH value of 11 for the aqueous solution. The adsorbed amount of methylene blue on TiO 2 @AS increased with the initial concentration of adsorbate and decreased with an increase in TiO 2 @AS dosage. The adsorption kinetics of methylene blue by TiO 2 @AS were in good agreement with the quasi-second-order kinetic model (R 2 $ 0.9964), indicating that chemisorption is the main rate-controlling step. The Freundlich isotherm equation can best describe the experimental data (R 2 ¼ 0.9788). It is revealed that the adsorption is mainly multilayer adsorption. Because DG < 0 and DH > 0, the adsorption is a spontaneous endothermic process. Furthermore, the TiO 2 @AS can be regenerated under ultraviolet light, thus prolonging the service life of AS and facilitating a solution to the problem of adsorption plugging.

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Experimental study of isotherms and kinetics for adsorption of water on Aluminium Fumarate

Cited by 77 publications

References 29 publications

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

Water and Metal–Organic Frameworks: From Interaction toward Utilization

Study on adsorption of methylene blue by a novel composite material of TiO₂ and alum sludge

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Experimental study of isotherms and kinetics for adsorption of water on Aluminium Fumarate

Cited by 77 publications

References 29 publications

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

Water and Metal–Organic Frameworks: From Interaction toward Utilization

Study on adsorption of methylene blue by a novel composite material of TiO2 and alum sludge

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Product

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Study on adsorption of methylene blue by a novel composite material of TiO₂ and alum sludge