Pilot testing of a novel integrated Multi Effect Distillation - Absorber compressor (MED-AB) technology for high performance seawater desalination

Aly, Shahzada Pamir; Jawad, Jasir; Manzoor, Husnain; Simson, Simjo; Lawler, Jenny; Mabrouk, Abdel Nasser

doi:10.1016/j.desal.2021.115388

Cited by 23 publications

(3 citation statements)

References 20 publications

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“…Seawater and brackish water, which occupy the highest proportions in nature, are an available source for desalination to obtain fresh water . To receive water with a lower salt concentration, several technologies have been developed, such as distillation, electrodialysis, ion exchange, reverse osmosis, and so on. Taking advantage of evaporation condensation or ion absorption, high-concentration saline water could be desalinated .…”

Section: Introductionmentioning

confidence: 99%

Biomass-Based Ferric Tannate Hydrogel with a Photothermal Conversion Function for Solar Water Evaporation

Zhang,

Jiang,

Zou

et al. 2023

ACS Appl. Polym. Mater.

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Solar water evaporation is an effective solution for water desalination without the energy use of secondary energy or fossil fuels. A ferric tannate (TA-Fe3+)/sodium alginate (SA-Fe3+)/polyacrylamide (TFSFP) hydrogel was synthesized and constructed as a solar water evaporator (SWE). Tannic acid (TA) and Fe3+ was chelated in situ through a convenient method combined with the cross-linking of SA. Along with an ion cross-linked SA-Fe3+ network, a porous hydrogel with a hydrophilic water transportation network maintained continuous water supply to an evaporation interface. Additionally, the water molecules in the evaporation interface could be activated effectively by the hydrophilic network and TA, which is of benefit to reduce water evaporation enthalpy. A 0.8 TFSFP hydrogel had reduced evaporation enthalpy and broad light absorption with an evaporation rate of 1.53 kg·m–1·h–1 under 1 sun and a photothermal conversion efficiency of 83.34%. With salt resistance and solar light intensity adaption, a 0.8 TFSFP hydrogel SWE could keep evaporating in five cycles and has excellent water desalination ability, which displays potential application in freshwater acquisition.

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Section: Introductionmentioning

confidence: 99%

Biomass-Based Ferric Tannate Hydrogel with a Photothermal Conversion Function for Solar Water Evaporation

Zhang,

Jiang,

Zou

et al. 2023

ACS Appl. Polym. Mater.

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“…The functional advantage of the gravity-driven falling-film evaporators (FFEs) over the flooded type makes them a better choice. 1,2 Horizontal tube array FFEs are actively used in multieffect desalination (MED) plants, 3,4 petroleum refineries, 5 cold thermal storage applications, 6 food processing industries, 7 refrigeration, 8,9 and natural cooling techniques. 10 Figure 1 depicts an industrial application associated with the column flow pattern.…”

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confidence: 99%

Characterization of column flow regimes on horizontal tubes for falling‐film systems: An experimental approach

Kandukuri

Deshmukh

Katiresan

2022

Asia-Pacific J Chem Eng

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The intertube flow regimes and hydrodynamic behavior of the liquid profile have a significant impact on the functioning of falling-film evaporators. Column flow is one of the fundamental flow modes, which is actively observed in many industrial evaporators. A high-speed digital photographic device is utilized to visualize the complete progression of column flow phases for intertube distances of 10/20/30/40 mm and Reynolds number (Re) values ranging from 41 to 583. The Sobel edge detection algorithm is implemented to quantify the flow parameters for each frame of a sequence. The research results indicated that the column flow regime between the inline horizontal tubes can be broadly classified into the following phases: columnar droplet flow, periodic column flow, satellite drops column flow, drift column flow, and mixing liquid film column flow. The findings show that the liquid jet diameters between the tubes range from 1.6 to 8.46 mm, an increase in the liquid jet diameter with Re and a decrease with tube-to-tube distance. The axial coverage of the liquid film profile beneath the tube differed from 2.07 to 3.99 mm and over the tube surface ranged from 1.14 to 2.68 mm. The formation of dry spots and flooding is a major problem in the operation of falling-film heat exchangers. The shape and size of the liquid jet have a direct impact on the interfacial area; understanding the entire progression of column flow regimes, as well as their characteristics, can help designers avoid the aforementioned problem.

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“…Extracting fresh water from seawater and brackish water is considered an effective measure for solving the shortage of water resources. [1][2][3][4] Traditional seawater desalination technologies, such as reverse osmosis (RO), [5][6][7] electrodialysis (ED), 8,9 multistage flash evaporation (MSF), 10 and multieffect distillation (MED), 11,12 are difficult to commercialize on a large scale due to their high energy consumption and high operating cost. 13,14 Capacitive deionization (CDI) is a novel electrochemical adsorption technology based on double layer theory.…”

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confidence: 99%

Zn/Fe/Al Modified Carboxymethyl Cellulose Biomass Carbon Aerogel for Capacitive Deionization

Wang¹,

Deng²,

Peng³

et al. 2022

J. Electrochem. Soc.

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Biomass carbon aerogels have attracted increasing interest worldwide for capacitive deionization (CDI) desalination due to their hierarchical pore structure distribution, high specific surface area, and modifiability. Herein, carboxymethyl cellulose (CMC) is used as a raw material, and Zn2+, Fe3+, and Al3+ are used as cross-linking agents to prepare carbon aerogels through "sol-gel, freeze-drying, high-temperature pyrolysis". A CMC//AC asymmetric CDI electrode device is constructed for desalination. The results showed that coordination involving metal ions and carboxyl groups formed a carbon aerogel with a three-dimensional network structure; moreover, the addition of metal ions significantly increased the surface charge and graphitization of the material. Among the systems studied, CMC-Fe showed abundant pseudocapacitance due to redox reactions of the Fe. Gasification of Zn further increased the pore volume (2.11 cm3 g-1), specific surface area (1844 m2 g-1) and total specific capacitance (365 F g-1) of CMC-Zn. Al exhibited no obviously favorable behavior. Additionally, the prepared CMC-Zn showed good cycling stability, and the capacitance remained at 98% after 100 charging and discharging cycles. The CMC-Zn carbon aerogel electrode achieved a significantly high adsorption capacity of 25.8 mg g-1, showing that it has great potential among carbon materials for desalination.

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Pilot testing of a novel integrated Multi Effect Distillation - Absorber compressor (MED-AB) technology for high performance seawater desalination

Cited by 23 publications

References 20 publications

Biomass-Based Ferric Tannate Hydrogel with a Photothermal Conversion Function for Solar Water Evaporation

Biomass-Based Ferric Tannate Hydrogel with a Photothermal Conversion Function for Solar Water Evaporation

Characterization of column flow regimes on horizontal tubes for falling‐film systems: An experimental approach

Zn/Fe/Al Modified Carboxymethyl Cellulose Biomass Carbon Aerogel for Capacitive Deionization

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