Bilayer fiber membrane electrospun from MOF derived Co3S4 and PAN for solar steam generation induced sea water desalination

2021 ◽  
pp. 122423
Author(s):  
Xunkai Yin ◽  
Yifei Zhang ◽  
Xinxin Xu ◽  
Yun Wang
Keyword(s):  
Sea Water ◽  
Water Desalination ◽  
Fiber Membrane ◽  
Steam Generation ◽  
Solar Steam Generation

scholarly journals Metal-free functionalized carbonized cotton for efficient solar steam generation and wastewater treatment

RSC Advances ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 1043-1050
Author(s):  
Hiran D. Kiriarachchi ◽  
Amr A. Hassan ◽  
Fathi S. Awad ◽  
M. Samy El-Shall
Keyword(s):  
Wastewater Treatment ◽  
Water Scarcity ◽  
Water Desalination ◽  
Steam Generation ◽  
Metal Free ◽  
Solar Steam Generation ◽  
Global Water

Water desalination via solar steam generation is one of the most important technologies to address the increasingly pressing global water scarcity.

Improving the water transpiration in a solar steam generation device

2019 ◽  
Vol 20 (1) ◽  
pp. 59-64
Author(s):  
Yuan Meng ◽  
Haibo Li
Keyword(s):  
Thermal Evaporation ◽  
Sea Water ◽  
Bulk Water ◽  
Solar Irradiation ◽  
Steam Generation ◽  
Device Structure ◽  
Water Transportation ◽  
Speed Up ◽  
Solar Steam Generation ◽  
Water Transpiration

Abstract Solar steam generation (SSG) has been proposed as one of the most advanced techniques to trigger solar energy desalination of sea water. Although many efforts have been dedicated to develop SSG devices, the efficiency remains relatively low. Previous work was mainly focused on thermal insulation film and light absorption. Attention has seldom been concentrated on device structure. Inspired by the manner of water transportation within flowers, we designed an artificial SSG unit which can effectively speed up the water transpiration from the bulk to the surface. Another advantage of such a device is that steam generation is separated from the bulk salty solution and thereby the solar thermal evaporation can be improved greatly. As demonstrated via the desalination experiment, the mass change and evaporation rate under 1 solar irradiation can reach as high as 2.51 kg/m2 and 1.26 kg/m2·h−1, respectively. Meanwhile, the evaporation efficiency is 74%. These values are much higher than those of traditional SSG devices and bulk water.

scholarly journals Low-cost and scalable carbon bread used as an efficient solar steam generator with high performance for water desalination and purification

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8674-8681
Author(s):  
Yang Yang ◽  
Man Zhao ◽  
Zhen Cao ◽  
Zhen Ge ◽  
Yanfeng Ma ◽  
...  
Keyword(s):  
Steam Generator ◽  
High Performance ◽  
Low Cost ◽  
Water Desalination ◽  
Promising Method ◽  
Steam Generation ◽  
Solar Steam Generation

Solar steam generation has been considered as a promising method for water desalination and purification.

scholarly journals Solar Heat Transfer formulation for the Steam generation from seawater based on Linear Fresnel Concentrator

2021 ◽  
Author(s):  
samir touzani
Keyword(s):  
Heat Transfer ◽  
Steam Generator ◽  
Sea Water ◽  
Water Desalination ◽  
Thin Layers ◽  
Steam Flow ◽  
Steam Generation ◽  
Detail Design ◽  
Flow Generation ◽  
Successive Heating

The purpose of this paper is to formulate the heat transfer needed to generate continuously the steam from the “Linear Fresnel concentrator Steam Generator” according to its dimensions. For more detail information refer to the article "Desalination of seawater by successive heating of thin layers of water using solar radiations from a Fresnel concentrator"[1], the preprint "Detail Design - Linear Fresnel concentrator Steam Generator"[2] and the preprint Steam Flow formulation of the Linear Fresnel concentrator Steam Generator[3]. The heat transfer flow assessment depending of many dimensions is the key point out put of this paper. At the glance, these dimensions are the geometry of the Linear Fresnel Concentrator, the tilt to the sun's rays, the length , the radius of the tangled cylinders, the thickness of the annulus spaces and the cavity between the composed device absorber and mirror. The device absorber is composed of the tangled cylinders and the steam collector. Note that the known LFR applications for both industrial and power sectors requires medium temperatures ranging from 100°C to 250°C. The flat plate solar collectors are suitable for low temperature applications maximum up to 80°C and parabolic concentrators are suitable for high temperatures applications above 300°C. Hence, the present work will focus on LFR with parabolic concentrator because sea water desalination requires reaching the boiling point under pressure near atmospheric pressure which is 100 °C. Furthermore, the diameter of absorber device for parabolic concentrator may vary from 5 in to 10 in which is much greater than tubes dimensions for trapezoidal cavity. Then, this dimension fact allows efficient flow water circulation and meaningful steam flow generation.[1] touzani, s. (2019, March 28). Desalination of seawater by successive heating of thin layers of water using solar radiations from a Fresnel concentrator. https://doi.org/10.31219/osf.io/dvr9y[2] touzani, s. (2020, September 12). Detail Design - Linear Fresnel concentrator Steam Generator. https://doi.org/10.31219/osf.io/wuq92[3] touzani, s. (2020, September 21). Steam Flow formulation of the Linear Fresnel concentrator Steam Generator. https://doi.org/10.31219/osf.io/ske5c

scholarly journals Dispersed solar still for effective desalination using montmorillonite nanoparticles for sturdy clean water yield

2021 ◽  
Author(s):  
V. Baskaran ◽  
R. Saravanane
Keyword(s):  
Sea Water ◽  
Low Cost ◽  
Water Yield ◽  
Clean Water ◽  
Steam Generation ◽  
Clay Nanoparticles ◽  
Water Characteristics ◽  
Current Water ◽  
Floating Type ◽  
Solar Steam Generation

Abstract Direct Solar Steam Generation (DSSG) system is an emerging technique in the field of desalination for yielding sustainable clean water. This investigation propagates through the use of nanoscale absorbers (montmorillonite) for sturdy desalination because of their excellent photo thermal conversation of nanoparticles. The solar absorber was dispersed in sea water in liquid type rather than fixed or floating type. Nanoparticles of chemical composition were employed by the researchers from starting to the present day, which includes carbon nanotubes, graphene oxide, etc. Inspired by nature and keeping in mind an eco-friendly technique, here we considered montmorillonite clay nanoparticles of natural origin. The experiment was conducted for an operational period of 14 days with a yield of 5.33–6.45 kg/m2/day with an evaporation rate of 0.70, 1.42 and 4.47 kg/m2.hr under 1-, 2- and 4-sun irradiance. The clean water output parameters was validated with WHO standards to satisfy potable water characteristics. The water characteristics before desalination for turbidity, pH, and Cl–, Na+ and TDS were found to be 48.50, 8.7, and 18,400, 12,120, 20,400 mg/L respectively; after desalination they were found to be 0.30, 6.65, 12, 4.5 and 52 mg/L respectively. This work focuses on current water scarcity problem and suggest a way to survival by using naturally available, low cost material.

Semiconductive, Flexible MnO2 NWs/Chitosan Hydrogels for Efficient Solar Steam Generation

2021 ◽  
Author(s):  
Muhammad Sultan Irshad ◽  
Xianbao Wang ◽  
Misbah Sehar Abbasi ◽  
Naila Arshad ◽  
Zihe Chen ◽  
...  
Keyword(s):  
Steam Generation ◽  
Chitosan Hydrogels ◽  
Solar Steam Generation

scholarly journals Study of the Ecological Footprint and Carbon Footprint in a Reverse Osmosis Sea Water Desalination Plant

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 377
Author(s):  
Federico Leon ◽  
Alejandro Ramos-Martin ◽  
Sebastian Ovidio Perez-Baez
Keyword(s):  
Reverse Osmosis ◽  
Canary Islands ◽  
Ecological Footprint ◽  
Sea Water ◽  
Water Desalination ◽  
Energy Costs ◽  
Generation System ◽  
Negative Part ◽  
Desalination Plant ◽  
Materials Used

The water situation in the Canary Islands has been a historical problem that has been sought to be solved in various ways. After years of work, efforts have focused on desalination of seawater to provide safe water mainly to citizens, agriculture, and tourism. Due to the high demand in the Islands, the Canary Islands was a pioneering place in the world in desalination issues, allowing the improvement of the techniques and materials used. There are a wide variety of technologies for desalination water, but nowadays the most used is reverse osmosis. Desalination has a negative part, the energy costs of producing desalinated water are high. To this we add the peculiarities of the electricity generation system in the Canary Islands, which generates more emissions per unit of energy produced compared to the peninsular generation system. In this study we have selected a desalination plant located on the island of Tenerife, specifically in the municipality of Granadilla de Abona, and once its technical characteristics have been known, the ecological footprint has been calculated. To do this we have had to perform some calculations such as the capacity to fix carbon dioxide per hectare in the Canary Islands, as well as the total calculation of the emissions produced in the generation of energy to feed the desalination plant.

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