Techno-economic evaluation of forward/reverse osmosis hybrid system for saline water desalination

2017 ◽  
Vol 98 ◽  
pp. 66-77
Author(s):  
Hanaa M. Ali ◽  
Azza I. Hafez ◽  
Maaly M.A. Khedr ◽  
Hanaa Gadallah ◽  
Rania Sabry ◽  
...  
2021 ◽  
Vol 5 (2) ◽  
pp. 125-140
Author(s):  
Said M. A. Ibrahim ◽  
Ahmed G. M. Shabak

Scarcity of fresh water, forced many countries to get their water needs, or part of it, by means of saline water desalination. Reverse osmosis (RO) systems are useful tools in this concern. In case the grid electricity is not available or costly, photovoltaic (PV) power is necessary to derive RO systems. The present paper is concerned with providing a methodology for complete sizing and design of a photovoltaic reverse osmosis (PVRO) system in Egypt. Egypt has very favorable solar energy. A computer program was constructed to solve the mathematical equations of the model to get the numerical values. The program is capable of calculating the solar irradiation for any city in Egypt. Calculations and selection of the RO system with all connected pumps, the peak PV power needed, and the actual PV area were performed for different water demands ranging from 1-100 m3/day, and various water total dissolved solids (TDSs) of 5000, 15000, and 30000 mg/l. The cost of the complete PVRO system was also determined. The concern of the paper is related to water desalination and solar energy, which are responsible for our existence. The work also aims toward sustainable and clean environment via utilizing solar energy.


Desalination ◽  
2018 ◽  
Vol 442 ◽  
pp. 16-31 ◽  
Author(s):  
Wanxi Peng ◽  
Akbar Maleki ◽  
Marc A. Rosen ◽  
Pouria Azarikhah

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Julie Lee

Droughts and flooding that have impacted Texas have decreased surface water availability, while draining the limited number of non-saline groundwater sources. Therefore, desalination of saline groundwater would be able to supplement the increasing demand of water for industrial and domestic uses. The process would have to be affordable and capable of meeting WHO1 standards for drinking water. Of the current desalination options available, the methods analyzed are reverse osmosis, electrodialysis, and nanofiltration. Of the three options, it was determined that reverse osmosis was the best solution for the desalination of saline groundwater for both industrial and domestic uses. Reverse osmosis filters saline water to meet WHO standards for sodium and chloride ions. Although both RO and electrodialysis processes were effective enough for eliminating total dissolved solids in the sample saline waters, only RO yielded potable water. If this system is successfully implemented, it could supplement the nonsaline groundwater being used for human consumption, as well as yield RO discharge water for residential or industrial uses. As a result, the severe impacts of the reoccurring droughts in Texas can be reduced, while lessening the drainage of the non-saline groundwater reservoirs in Texas. Keywords: Desalinated Groundwater, Reverse Osmosis, Electrodialysis, Nanofiltration, cost- comparison, potable water, brackish water desalination


Author(s):  
Mir-Akbar Hessami ◽  
Nathan Hall ◽  
Adam Robb

The planet Earth has an abundant supply of saline water but it requires special treatment to ensure the supply of potable water to sustain life on Earth. Water desalination can be used to achieve this objective. In order to understand this process, research was undertaken on water desalination with a focus on reverse osmosis (RO) in order to develop a simple mathematical model of this process. Mathematical modelling can be used to describe, explain and calculate the solvent and solute fluxes through RO membranes. Such techniques are commonly used by membrane manufacturers to develop proprietary software to study their product’s performance. Two such software packages were used to study the effects of the operating conditions on the performance of RO membrane. Good agreement was achieved between the salt rejection results of the mathematical model and the computer software.


Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 377
Author(s):  
Federico Leon ◽  
Alejandro Ramos-Martin ◽  
Sebastian Ovidio Perez-Baez

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.


Desalination ◽  
1977 ◽  
Vol 24 (1-3) ◽  
pp. 341-364 ◽  
Author(s):  
G. Boari ◽  
C. Carrieri ◽  
P. Mappelli ◽  
M. Santori

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