scholarly journals Nanofiltration and Low Energy Reverse Osmosis for Advanced Wastewaters Treatment

10.5772/22914 ◽  
2011 ◽  
Author(s):  
Gamal Khedr
Keyword(s):  
Reverse Osmosis ◽  
Low Energy ◽  
Wastewaters Treatment

scholarly journals A Comparative Techno-Economic Analysis of Different Desalination Technologies in Off-Grid Islands

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2261 ◽  
Author(s):  
Michael Castro ◽  
Myron Alcanzare ◽  
Eugene Esparcia ◽  
Joey Ocon
Keyword(s):  
Reverse Osmosis ◽  
Lithium Ion ◽  
Low Energy ◽  
Solar Photovoltaic ◽  
Vapor Compression ◽  
Renewable Energy Systems ◽  
Multi Stage ◽  
Low Energy Consumption ◽  
System Robustness ◽  
Economic Comparison

Freshwater in off-grid islands is sourced from rain, groundwater, or mainland imports, which are unreliable, limited, and expensive, respectively. Sustainable freshwater generation from desalination of abundant seawater is another alternative worth exploring. Model-based techno-economic simulations have focused on reverse osmosis desalination due to its low energy consumption and decreasing costs. However, reverse osmosis requires frequent and costly membrane replacement. Other desalination technologies have advantages such as less stringent feedwater requirements, but detailed studies are yet to be done. In this work, a techno-economic comparison of multi-effect distillation, multi-stage flash, mechanical vapor compression, and reverse osmosis coupled with solar photovoltaic-lithium ion-diesel hybrid system was performed by comparing power flows to study the interaction between energy and desalination components. Optimization with projected costs were then performed to investigate future trends. Lastly, we used stochastic generation and demand profiles to infer uncertainties in energy and desalination unit sizing. Reverse osmosis is favorable due to low energy and water costs, as well as possible compatibility with renewable energy systems. Multi-effect distillation and multi-stage flash may also be advantageous for low-risk applications due to system robustness.

scholarly journals Low energy positron annihilation study of composite reverse osmosis membranes

2011 ◽  
Vol 262 ◽  
pp. 012013 ◽  
Author(s):  
Z Chen ◽  
K Ito ◽  
H Yanagishita ◽  
N Oshima ◽  
R Suzuki ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Reverse Osmosis ◽  
Low Energy ◽  
Positron Annihilation Study ◽  
Reverse Osmosis Membranes

scholarly journals New Resins for Ion Exchange Applications and a Process for Their Sustainable Regeneration

Substantia ◽  
2021 ◽  
pp. 33-37
Author(s):  
Tanita Gettongsong ◽  
Mojtaba Taseidifar ◽  
Richard M. Pashley
Keyword(s):  
Ion Exchange ◽  
Reverse Osmosis ◽  
Low Energy ◽  
Ion Exchange Resins ◽  
Closed Cycle ◽  
Membrane Process ◽  
Design And Synthesis ◽  
Salt Level ◽  
Anions And Cations ◽  
Exchange Resins

The report is concerned with the design and synthesis of a mixed bead resin for high salt level desalination. The resin allows for the simultaneous exchange of both anions and cations, within the same polymer. This improves the efficiency of desalination at seawater levels. A novel process for sustainable and low energy desalination for brackish water has already been achieved via ion exchange resins as explained below. The advance in resin technology improves a novel membrane process with closed–cycle regeneration of the resin.  It is a superior alternative to reverse osmosis.

A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management

2013 ◽  
Vol 104 ◽  
pp. 592-602 ◽  
Author(s):  
Weiyi Li ◽  
William B. Krantz ◽  
Emile R. Cornelissen ◽  
Jan W. Post ◽  
Arne R.D. Verliefde ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Low Energy ◽  
Hybrid Process ◽  
Seawater Desalination ◽  
Reverse Electrodialysis ◽  
Brine Management
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