Water-energy nexus: desalination technologies and renewable energy sources

Panagopoulos, Argyris

doi:10.1007/s11356-021-13332-8

Cited by 172 publications

(51 citation statements)

References 89 publications

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“…Since marine organisms live in an osmotic balance with their environment, flora and fauna in the surroundings of brine discharges may be affected due to alterations in the physicochemical characteristics of the media, mainly salinity and temperature [38]. In this sense, the perspective on brines has undergone an evolution as the desalination capacity and the associated brine disposal increased [39][40][41][42].…”

Section: Alternative A0-direct Brine Disposalmentioning

confidence: 99%

Chemical and Energy Recovery Alternatives in SWRO Desalination through Electro-Membrane Technologies

Herrero-Gonzalez

Ibáñez

2021

Applied Sciences

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Electro-membrane technologies are versatile processes that could contribute towards more sustainable seawater reverse osmosis (SWRO) desalination in both freshwater production and brine management, facilitating the recovery of materials and energy and driving the introduction of the circular economy paradigm in the desalination industry. Besides the potential possibilities, the implementation of electro-membrane technologies remains a challenge. The aim of this work is to present and evaluate different alternatives for harvesting renewable energy and the recovery of chemicals on an SWRO facility by means of electro-membrane technology. Acid and base self-supply by means of electrodialysis with bipolar membranes is considered, together with salinity gradient energy harvesting by means of reverse electrodialysis and pH gradient energy by means of reverse electrodialysis with bipolar membranes. The potential benefits of the proposed alternatives rely on environmental impact reduction is three-fold: (a) water bodies protection, as direct brine discharge is avoided, (b) improvements in the climate change indicator, as the recovery of renewable energy reduces the indirect emissions related to energy production, and (c) reduction of raw material consumption, as the main chemicals used in the facility are produced in-situ. Moreover, further development towards an increase in their technology readiness level (TRL) and cost reduction are the main challenges to face.

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Section: Alternative A0-direct Brine Disposalmentioning

confidence: 99%

Chemical and Energy Recovery Alternatives in SWRO Desalination through Electro-Membrane Technologies

Herrero-Gonzalez

Ibáñez

2021

Applied Sciences

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“…Thermal methods of desalination are the second most widespread in the world and currently cover about 25% of global installation capacity [3][4][5]. They are based on subsequent evaporation and condensation of fresh water out of the brine [6].…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, another standard thermal desalination method, called multi-stage flash, consumes 10-16 kWh for producing the same amount of purified water [7]. Due to the shortage of conventional power, multiple projects of industrial desalination are based on renewables [3,4,7,8].…”

Section: Introductionmentioning

confidence: 99%

Solar-Driven Desalination Using Nanoparticles

et al. 2021

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Due to the high light absorption and the possibility of localizing boiling to the interior of the receiver, nanoparticles are promising for solar-driven desalination. The paper presents an experimental study of the nanoparticle-based photothermal boiling of water with sea salt. The experiments were carried out using a laboratory-scale system with a transparent photothermal receiver of light and a closed condensate cycle. In this study, we tested three types of nanoparticles: multiwall carbon nanotubes with two main sizes of 49 nm and 72 nm, 110 nm iron oxide particles Fe3O4, and a commercial paste based on carbon nanotubes. The concentration of nanoparticles was varied up to 10% wt. We found that the nanoparticles enhance the steam generation by 23%, relative to a conventional desalinator with a black-body receiver. The best result was obtained for the 5% wt. concentration of carbon nanotubes.

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“…Ultrafiltration is widely used in many fields including industrial wastewater treatment, domestic sewage reuse, domestic water purification, and seawater desalination pretreatment because of its advantages of high separation efficiency, no phase transition during the separation process, and green energy saving (Wang et al 2013a(Wang et al , 2013b(Wang et al , 2013cZhao et al 2014). Ultrafiltration is used for brine treatment in desalination industries and other industries countries (Panagopoulos 2021). However, presently, the market contains many ultrafiltration membrane products, whose qualities are mixed.…”

Section: Introductionmentioning

confidence: 99%

Validation and optimization of a new instrument for measuring the performances of ultrafiltration membranes

et al. 2021

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In this study, we introduce the current situation of the membrane inspection industry. We have developed a new integrated rapid membrane inspection machine (MIM) to test the performances of nanofiltration or ultrafiltration membranes by measuring Silt Density Index (SDI) value (i.e., the key performance indicator) of the water filtered. This study optimizes many key conditions include temperature, pH value and pressures, then establishes an SDI detection new method of ultrafiltration membranes by using MIM. We set the temperature of the test liquid to 25 °C, pH in the range of 7–8, and pressure to approximately 0.10 MPa. The results reflect that MIM can be used to effectively determine the SDI of ultrafiltration membranes used the new method and the results of the method validation are satisfactory.

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Water-energy nexus: desalination technologies and renewable energy sources

Cited by 172 publications

References 89 publications

Chemical and Energy Recovery Alternatives in SWRO Desalination through Electro-Membrane Technologies

Chemical and Energy Recovery Alternatives in SWRO Desalination through Electro-Membrane Technologies

Solar-Driven Desalination Using Nanoparticles

Validation and optimization of a new instrument for measuring the performances of ultrafiltration membranes

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