Nutrient-driven forward osmosis coupled with microalgae cultivation for energy efficient dewatering of microalgae

2020 ◽  
Vol 48 ◽  
pp. 101880 ◽  
Author(s):  
Hoyoung Ryu ◽  
Kyochan Kim ◽  
Hoon Cho ◽  
Eunhye Park ◽  
Yong Keun Chang ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Forward Osmosis ◽  
Microalgae Cultivation

scholarly journals Seawater Desalination: A Review of Forward Osmosis Technique, Its Challenges, and Future Prospects

Processes ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 901
Author(s):  
Aondohemba Aende ◽  
Jabbar Gardy ◽  
Ali Hassanpour
Keyword(s):  
Water Scarcity ◽  
Energy Efficient ◽  
Forward Osmosis ◽  
Cost Effective ◽  
Energy Costs ◽  
Seawater Desalination ◽  
Cost Effective Alternative ◽  
Individual Domain ◽  
Key Drivers ◽  
To Come

Currently over 845 million people are believed to be living under severe water scarcity, and an estimated 2.8 billion people across the globe are projected to come under serious water scarcity by the year 2025, according to a United Nations (UN) report. Seawater desalination has gained more traction as the solution with the most potential for increasing global freshwater supplies amongst other solutions. However, the economic and energy costs associated with the major desalination technologies are considered intrinsically prohibitive largely due to their humongous energy requirements alongside the requirements of complex equipment and their maintenance in most cases. Whilst forward osmosis (FO) is being touted as a potentially more energy efficient and cost-effective alternative desalination technique, its efficiency is challenged by draw solutes and the draw solutes recovery step in FO applications alongside other challenges. This paper looks at the present situation of global water scarcity, and a brief leap into the major desalination technologies employed. A closer look at the key drivers of FO as a seawater desalination technique in their individual domain and its outlook as an technology are further highlighted.

scholarly journals Energy-efficient desalination by forward osmosis using responsive ionic liquid draw solutes

2015 ◽  
Vol 1 (3) ◽  
pp. 341-347 ◽  
Author(s):  
Yufeng Cai ◽  
Wenming Shen ◽  
Jing Wei ◽  
Tzyy Haur Chong ◽  
Rong Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Consumption ◽  
Energy Efficient ◽  
Forward Osmosis ◽  
Electrical Energy ◽  
High Flux ◽  
Electrical Energy Consumption ◽  
Thermally Responsive

New thermally responsive ionic liquid draw solutes generate high flux against seawater with substantially reduced electrical energy consumption.

scholarly journals Recent Progresses of Forward Osmosis Membranes Formulation and Design for Wastewater Treatment

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2043 ◽  
Author(s):  
Goh ◽  
Ismail ◽  
Ng ◽  
Abdullah
Keyword(s):  
Wastewater Treatment ◽  
Membrane Fouling ◽  
Energy Efficient ◽  
Potable Water ◽  
Forward Osmosis ◽  
Water Quality Standards ◽  
Separation Technology ◽  
Recent Developments ◽  
Treatment Technologies ◽  
Treatment Application

Production of potable water or reclaimed water with higher quality are in demand to address water scarcity issues as well as to meet the expectation of stringent water quality standards. Forward osmosis (FO) provides a highly promising platform for energy-efficient membrane-based separation technology. This emerging technology has been recognized as a potential and cost-competitive alternative for many conventional wastewater treatment technologies. Motivated by its advantages over existing wastewater treatment technologies, the interest of applying FO technology for wastewater treatment has increased significantly in recent years. This article focuses on the recent developments and innovations in FO for wastewater treatment. An overview of the potential of FO in various wastewater treatment application will be first presented. The contemporary strategies used in membrane designs and fabrications as well as the efforts made to address membrane fouling are comprehensively reviewed. Finally, the challenges and future outlook of FO for wastewater treatment are highlighted.

Lower critical solution temperature (LCST) phase separation of glycol ethers for forward osmotic control

2014 ◽  
Vol 16 (11) ◽  
pp. 5319-5325 ◽  
Author(s):  
Daichi Nakayama ◽  
Yeongbong Mok ◽  
Minwoo Noh ◽  
Jeongseon Park ◽  
Sunyoung Kang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Separation ◽  
Temperature Gradient ◽  
Lower Critical Solution Temperature ◽  
Energy Efficient ◽  
Forward Osmosis ◽  
Solution Temperature ◽  
Glycol Ethers ◽  
Critical Solution Temperature ◽  
Mild Temperature

Lower critical solution temperature (LCST) phase transition of glycol ethers by a mild temperature gradient induces a drastic change in osmotic pressure to enable energy-efficient forward osmosis (FO) desalination.

Four-fold concentration of sucrose in sugarcane juice through energy efficient forward osmosis using sea bittern as draw solution

RSC Advances ◽  
2015 ◽  
Vol 5 (23) ◽  
pp. 17872-17878 ◽  
Author(s):  
Dibyendu Mondal ◽  
Sanna Kotrappanavar Nataraj ◽  
Alamaru Venkata Rami Reddy ◽  
Krishna K. Ghara ◽  
Pratyush Maiti ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Forward Osmosis ◽  
Sugarcane Juice ◽  
Draw Solution ◽  
Spontaneous Process

Clarified sugarcane juice was efficiently dewatered through the spontaneous process of Forward Osmosis (FO) employing sea bittern as draw solution.

scholarly journals Entropy Generation Minimization for Energy-Efficient Desalination

2018 ◽  
Author(s):  
John H. Lienhard
Keyword(s):  
Energy Efficiency ◽  
Entropy Generation ◽  
Energy Efficient ◽  
Technology Development ◽  
Saline Water ◽  
Forward Osmosis ◽  
Membrane Distillation ◽  
Power Cycles ◽  
Entropy Generation Minimization ◽  
Work Of Separation

Desalination systems can be conceptualized as power cycles, in which the useful work output is the work of separation of fresh water from saline water. In this framing, thermodynamic analysis provides powerful tools for raising energy efficiency. This paper discusses the use of entropy generation minimization for a spectrum of desalination systems, including those based on reverse osmosis, humidification-dehumidification, membrane distillation, electrodialysis, and forward osmosis. The energy efficiency of desalination is shown to be maximized when entropy generation is minimized. Equipartition of entropy generation is considered and applied to these systems. The mechanisms of entropy generation in these systems are characterized, including the identification of major causes of irreversibility. Methods to limit discarded exergy are also identified. Prospects and technology development needs for further improvement are mentioned briefly.

Sign in / Sign up

Export Citation Format

Share Document