Enhancement of corrosion resistance in thermal desalination plants by diamond like carbon coating

Golsefatan, Hamid Reza; Fazeli, Mohammad Sadegh; Mehrabadi, Abdollah Rashidi; Ghomi, Hamid

doi:10.1016/j.desal.2017.01.027

Cited by 26 publications

(8 citation statements)

References 37 publications

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“…3 Seawater desalination has been considered as the most promising way to solve the challenge of the fresh water shortage due to its adequate water supply. 4,5 The seawater desalination technologies currently in use can be generally divided into two categories. One is membrane-based separation method such as the reverse osmosis process, and the other is the thermal desalination method such as the multistage flash process.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Water scarcity has become one of the most severe global challenges due to the development of society, growing population, and increasingly serious water pollution. , According to current predictions, 3.9 billion people (more than half of the world’s population) will live in water-stressed areas by 2025 . Seawater desalination has been considered as the most promising way to solve the challenge of the fresh water shortage due to its adequate water supply. , The seawater desalination technologies currently in use can be generally divided into two categories. One is membrane-based separation method such as the reverse osmosis process, and the other is the thermal desalination method such as the multistage flash process .…”

Section: Introductionmentioning

confidence: 99%

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Water Delivery Channel Design in Solar Evaporator for Efficient and Durable Water Evaporation with Salt Rejection

Wang

Gan

Chen

et al. 2020

ACS Sustainable Chem. Eng.

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Recently, solar evaporators composed of photothermal materials and their carriers have been designed and produced to enhance the solar evaporation rates based on interfacial solar heating. However, maintaining the high evaporation rate while preventing salt accumulation remains a challenge. In this paper, a water transport channel was designed to move the brine outside the solar evaporator to the expandable polyethylene (EPE) foam around the evaporator, thereby preventing salt accumulation in the evaporator. The concentration of the treated seawater was not increased during continuous evaporation and therefore avoiding the treatment of the high-concentration brine. The salt-rejecting solar evaporator was composed of a top layer of photothermal materials for high solar absorption, a thermal barrier layer of EPE foam for floatation and heat insulation, and a rationally designed water transport channel of air-laid paper (ALP) for fast seawater delivery to the top layer and outside the evaporator. The water evaporation rate of the simulated seawater by the salt-rejecting evaporator under 1 kW·m–2 solar irradiance was significantly enhanced to 1.46 kg·m–2·h–1 (accompanied by a photothermal conversion efficiency of 91.7%), which was 3.74 times higher than evaporation rate of the simulated seawater alone. The salt-rejecting evaporator also displayed excellent stability and durability as the evaporation rate was unchanged after 16 cycles of use. Finally, the potential application of the salt-rejecting evaporator was demonstrated in a practical setting by packing 25 evaporators in an EPE foam plate.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water Delivery Channel Design in Solar Evaporator for Efficient and Durable Water Evaporation with Salt Rejection

Wang

Gan

Chen

et al. 2020

ACS Sustainable Chem. Eng.

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“…In more recent years, coating technologies, along with functional coating surfaces, have been implemented to improve wear resistance for many engineering surfaces [17][18][19][20]. In extreme engineering environments, like desalination plants, it has been shown that coatings with functional properties, like aC:H, can be added to SS to decrease the corrosion rates [21]. Functional coatings can be developed through processes such as innovative grinding systems, sandblasting, focus ion beam, chemical texturing, laser machining and nano-imprint lithography [18,19,22,23].…”

Section: Tooling Surface Technologiesmentioning

confidence: 99%

Investigation of the Integrity of aC:H Coatings on Stainless Steel Micro-Moulds during Thermal Cycling

Griffiths

Rees

Llewelyn

et al. 2018

J. Coat. Sci. Technol.

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Micro-injection moulding (µIM) is a key technology for scaling down larger geometry components and can include functional features at the micrometre scale and as far as the sub-micrometre length scale. Thermal cycling of amorphous hydrogenated carbon (aC:H) coated Stainless Steel (SS) has been investigated to simulate long-term micro-injection moulding (µIM) wearing and damage. Micro indentations and cracks were made into the mould and predictions of the crack behaviour were made using thermal expansion models. Validation of the results was performed with multiple heating and cooling cycles along with hardness measurements of the damage to the coating. The undamaged surfaces showed no major deformation but the cracks were shown to propagate and change in behaviour. The first two heat cycles of the testing had the most significant effect on the substrate with varying thermal expansions of materials being the main cause. The aC:H is shown to have excellent properties for mould tool applications but delamination could occur in areas susceptible to damaged and periodic surface inspection will be required preserve tool life.

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“…However, due to the high enthalpy of vaporization of water, these approaches suffer from low efficiency and high energy cost; 3,4 corrosion is also a common problem in thermal desalination processes. 5,6 Over the last few years, alternative methods to thermal and reverse osmosis techniques have been proposed. 1,7−9 One such approach is solvent-based extraction.…”

Section: Introductionmentioning

confidence: 99%

Computational Assessment of an Amine-Based Solvent Library for High-Salinity Brine Desalination

Barbosa

Turner

2023

Ind. Eng. Chem. Res.

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Human population growth has increased the demand for freshwater. Simultaneously, improvements to high-salinity brine desalination technology are needed to treat wastewater from expanding industrial activities. Temperature-swing solvent extraction (TSSE), initially proposed in the 1960s for low-salinity brine desalination, has recently been found to be effective for processing high-salinity brines. Although there have been several individual investigations performed to test the TSSE performance of various amine-based solvents, the desired molecular properties of the best solvent candidates remain unknown. Using molecular simulation data and an unsupervised learning method, the molecular characteristics of 60 different amine-based solvents are analyzed and grouped into clusters based on their thermodynamic properties, such as density, heat of vaporization, volumetric thermal expansion coefficient, solvent–solvent binding free energy, solvation free energy, and number of hydrogen-bonds. Solvents with features most similar to one of the best current TSSE solvents (diisopropylamine) were analyzed further by simulating brine–water interfacial systems. Among the 59 amine-based solvents compared to diisopropylamine, we find that secondary amines with a six-carbon branched or linear structure display the most promising TSSE performance and should be experimentally investigated in the future.

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Enhancement of corrosion resistance in thermal desalination plants by diamond like carbon coating

Cited by 26 publications

References 37 publications

Water Delivery Channel Design in Solar Evaporator for Efficient and Durable Water Evaporation with Salt Rejection

Water Delivery Channel Design in Solar Evaporator for Efficient and Durable Water Evaporation with Salt Rejection

Investigation of the Integrity of aC:H Coatings on Stainless Steel Micro-Moulds during Thermal Cycling

Computational Assessment of an Amine-Based Solvent Library for High-Salinity Brine Desalination

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