Temperature-enhanced pressure retarded osmosis powered by solar energy: Experimental validation, economic consideration, and potential implication

Wang, Qun; Cheng, Hongxu; Wang, Jian; Ma, Zhen; Liu, Zaijian; Sun, Zhantong; Xu, Dongmei; Gao, Jun; Gao, Xueli

doi:10.1016/j.cherd.2021.04.024

Cited by 12 publications

(6 citation statements)

References 48 publications

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“…The results show that higher permeability flux can be obtained at higher optimum operating pressure by increasing the operating temperature. But solar-powered heating PRO is expensive, so it is necessary to combine the temperature-enhanced PRO process with the thermal desalination process . In 2021, Abbasi-Garravand et al studied the effect of temperature on the power density and scaling of two industrial semipermeable membranes in PRO system.…”

Section: Technologies For Harvesting Salinity Gradient Energymentioning

confidence: 99%

“…PRO technology has developed rapidly, and an accurate mathematical model has been established to predict power density at the theoretical level, giving a good correlation with experimental results. One of the superiorities of PRO is that it can be applied to the desalination process, but the most principal challenge of the PRO technology is the development of membranes and reducing energy costs. ,, …”

Section: Technologies For Harvesting Salinity Gradient Energymentioning

confidence: 99%

“…But solar-powered heating PRO is expensive, so it is necessary to combine the temperatureenhanced PRO process with the thermal desalination process. 73 In 2021, Abbasi-Garravand et al studied the effect of temperature on the power density and scaling of two industrial semipermeable membranes in PRO system. Their study shows for the first time that it is possible to generate electricity at low temperatures using the PRO process, which exhibits promise in extracting salinity gradient energy at lowtemperature areas.…”

Section: Technologies For Harvesting Salinitymentioning

confidence: 99%

“…One of the superiorities of PRO is that it can be applied to the desalination process, but the most principal challenge of the PRO technology is the development of membranes and reducing energy costs. 60,73,74 2.2. Reverse Electrodialysis.…”

Section: Technologies For Harvesting Salinitymentioning

confidence: 99%

See 3 more Smart Citations

Principles and Materials of Mixing Entropy Battery and Capacitor for Future Harvesting Salinity Gradient Energy

Zhou

Zhang

Han

et al. 2022

ACS Appl. Energy Mater.

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The salinity gradient energy, also known as "blue energy", widely exists at the junction of river water and seawater, which is a promising renewable energy. When two solutions with different salt concentrations are mixed, they will spontaneously release energy. The blue energy is in the form of chemical energy. The available salinity gradient energy all over the world is huge, so the study of it is of great significance. In this review, various techniques and their principles for obtaining salinity gradient energy are reviewed, and the mixing entropy battery (MEB) technique is introduced in detail. The MEB can not only extract but also store electrochemical energy through a simple four-step cycle. We focus on the principles of MEB and the calculation of energy consumption during the process of mixing, as well as the anode materials, cathode materials, and natural electrolyte used in MEB. The electrolyte of the mixing entropy battery or capacitor is not limited to river and seawater; salt-lake brine, geothermal water, and urban wastewater can also be used, but further research is needed.

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Section: Technologies For Harvesting Salinity Gradient Energymentioning

confidence: 99%

Section: Technologies For Harvesting Salinity Gradient Energymentioning

confidence: 99%

Section: Technologies For Harvesting Salinitymentioning

confidence: 99%

Section: Technologies For Harvesting Salinitymentioning

confidence: 99%

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Principles and Materials of Mixing Entropy Battery and Capacitor for Future Harvesting Salinity Gradient Energy

Zhou

Zhang

Han

et al. 2022

ACS Appl. Energy Mater.

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“…In essence, the external heat input, required for solution regeneration, can be converted to mechanical energy, resulting in an osmotic heat engine (OHE) [10]. Such an engine may utilize low-grade renewable energy heat sources, such as solar [11] and geothermal energy [12] or waste heat, for solution regeneration and heating of solutions in the PRO cycle, which may also increase the process performance [9]. Additionally, a closed PRO system does not require access to saltwater and freshwater in close proximity, and therefore, its environmental impact and constraints are limited.…”

mentioning

confidence: 99%

Experimental study of the potential of concentrated NaCl solutions for use in pressure-retarded osmosis process

Dietrich,

Cieślikiewicz,

Furmański

et al. 2024

Archives of Thermodynamics

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Pressure retarded osmosis is a process that enables useful work generation from the salinity difference of solutions. The literature most often considers using pressure retarded osmosis with natural sodium chloride (NaCl) solutions, such as seawater, dedicated for open systems. To explore the full potential of this process, however, optimized, highly concentrated solutions of various compounds can be used. The presented research is focused on evaluating the impact of increasing draw solution temperature and concentration on the permeate flow in the osmotic process. The permeate flow is directly related to achievable work in this process, therefore, it is important to find feed and draw solution parameters that maximize it. An experimental setup developed in this study provides full control over the process parameters. Furthermore, the performance characteristics of the membrane over process time were investigated, as it became evident during preliminary experiments that the membrane impact is significant. The studies were conducted without back-pressure, in a configuration typical of the forward osmosis process, with solution circulation on both sides of the membrane. The obtained results show a clear positive impact of both the temperature and concentration increase on the potential output of a pressure retarded osmosis system. The membrane behaviour study allowed for correct interpretation of the results, by establishing the dynamics of the membrane degradation process.

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Special Issue: Development and application of membranes for challenging environments

Lau

Yong

2022

Chemical Engineering Research and Design

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Temperature-enhanced pressure retarded osmosis powered by solar energy: Experimental validation, economic consideration, and potential implication

Cited by 12 publications

References 48 publications

Principles and Materials of Mixing Entropy Battery and Capacitor for Future Harvesting Salinity Gradient Energy

Principles and Materials of Mixing Entropy Battery and Capacitor for Future Harvesting Salinity Gradient Energy

Experimental study of the potential of concentrated NaCl solutions for use in pressure-retarded osmosis process

Special Issue: Development and application of membranes for challenging environments

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