Solar desalination by air-gap membrane distillation: a case study from Algeria

Moudjeber, Djamel-Eddine; Ruiz-Aguirre, A.; Ugarte-Judge, Daniel; Mahmoudi, Hacène; Zaragoza, Guillermo

doi:10.1080/19443994.2016.1139100

Cited by 12 publications

(5 citation statements)

References 20 publications

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“…S10 (namely ≅6 L m -2 h -1 ), a single square meter of distiller exposed to direct solar radiation (for 6 working hours) theoretically has the potential to satisfy the daily drinkable water needs (e.g. two litres per day 22…”

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confidence: 99%

Passive solar high-yield seawater desalination by modular and low-cost distillation

et al. 2018

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Although seawater is abundant, desalination is energy-intensive and expensive. Using the sun as an energy source is attractive for desalinating seawater; however, the performance of state-ofthe-art passive devices is unsatisfactory when operated at less than one sun (<1 kW m -2 ). Here, we present a completely passive, modular, and low-cost solar thermal distiller for seawater desalination. Each distillation stage is made of two opposed hydrophilic layers separated by a hydrophobic microporous membrane, and it does not require further mechanical ancillaries.Under realistic laboratory and outdoor conditions, we obtained a distillate flow rate of almost 3 L m -2 h -1 from seawater at less than one sun -twice the yield of recent passive device reported in the literature. In perspective, theoretical modelling suggests that the distiller has the potential to further doubling the peak flow rate observed in the current experiments. This layout can satisfy freshwater needs in isolated and impoverished communities, as well as realize self-sufficient floating installations or provide freshwater in emergency conditions.

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confidence: 99%

Passive solar high-yield seawater desalination by modular and low-cost distillation

et al. 2018

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“…The second configuration is air gap membrane distillation (AGMD) in which an air gap is interposed between the membrane and the condensate surface. This stagnant air gap reduces heat losses due to conduction, thus increasing the thermal efficiency of this configuration [32]. The sweeping gas membrane distillation (SGMD) represents the third configuration.…”

Section: Configurationsmentioning

confidence: 99%

Solar Membrane Distillation: Use of a Helically Coiled Fiber

Zrelli¹

2017

Distillation - Innovative Applications and Modeling

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Membrane distillation (MD) is a novel process introduced to overcome the disadvantages of the conventional distillation process. MD has gained much interest, principally, for its lower energy demand and higher rejection factors. Many configurations of the membrane module have been tested to improve the MD process. In this case, and in order to see the possibility of using the helically coiled fiber for MD coupled with solar energy, a mathematical model has been developed. This model describes the evolutions of permeate flow rate with the variation of inlet feed characteristics, solar flux, and so on. A comparison between the use of linear and helically-coiled fiber shows an enhancement of the temperature polarization coefficient about 6% for the case of the helical fiber and to have an improvement factor by 28%. For the case of the effect of solar energy on the permeate flow rate, an increase of 264% is remarked for the variation of the direct solar flux from 200 to 800 W/m 2 . However, a reduction of 12% for the permeate flux is obtained, when the inlet feed concentration grows from 10 to 300 g/l.

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“…In another research, D. Moudjeber et al [23] conducted a study in which a commercial membrane distillation module was used. This later has an AGMD and spiral-wound configuration.…”

Section: Introductionmentioning

confidence: 99%

An Effective Standalone Solar Air Gap Membrane Distillation Plant for Saline Water Desalination: Mathematical Model, Optimization

Mibarki

Triki

Belhadj

et al. 2023

Water

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Several drinking water production techniques are being established to respond immediately to the growing needs of the population. The system of air gap membrane distillation (AGMD) is the best attractive option for the process of water desalination. This thermal process is characterized by its potential to provide drinking water at low energy costs when combined with solar energy. In this paper, the AGMD brackish water desalination unit potentialities coupled with solar energy were investigated. Ghardaïa of the south region has been considered as the field of our study. Mathematical modeling is investigated by employing MATLAB software to develop the prediction of the permeate flux related to the phenomena of heat and mass transfer. Herein, flat plate solar collectors (SFPC) were exploited as a source for heating saline water through free solar energy conversion. The further model validation of a flat solar collector made it possible for following the instantaneous evolution of the collector outlet temperature depending on the feed water temperature and the flow rate. Furthermore, it is interesting to note that the results prove the possibility to produce water by the solar AGMD process with a maximum permeate flux of 8 kg·m−2·h−1 achieved at 68 °C, a feed temperature. Moreover, gained output ratio (GOR) of the unit of thermal solar desalination was estimated to be about 4.6, which decreases with increasing hot water flow and temperature.

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Solar desalination by air-gap membrane distillation: a case study from Algeria

Cited by 12 publications

References 20 publications

Passive solar high-yield seawater desalination by modular and low-cost distillation

Passive solar high-yield seawater desalination by modular and low-cost distillation

Solar Membrane Distillation: Use of a Helically Coiled Fiber

An Effective Standalone Solar Air Gap Membrane Distillation Plant for Saline Water Desalination: Mathematical Model, Optimization

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