Solar desalination techniques
Morteza Khashehchi, Sivasakthivel Thangavel, Pooyan Rahmanivahid, Milad Heidari, Taleb Moazzeni, Vikas Verma, Ashwani Kumar
Abstract
As global water scarcity intensifies, the quest for sustainable solutions gains urgency. This chapter delves into the realm of solar desalination techniques, exploring their potential to alleviate water scarcity challenges while addressing the critical need for energy-efficient and environmentally responsible solutions. This chapter begins by elucidating the magnitude of water scarcity as a global challenge, setting the stage for the discussion on solar desalination as a promising approach. It underscores the imperative of not only acknowledging the challenges but also harnessing the manifold opportunities presented by solar-driven technologies. This chapter expounds on various solar desalination techniques, ranging from solar distillation to advanced methods such as solar multistage flash distillation (MSF), solar reverse osmosis (RO), and solar nano-filtration. The intricacies of these techniques are examined, highlighting their mechanisms and the vital role of solar energy in powering them. Moreover, this chapter illuminates the importance of energy efficiency and technological advances, emphasizing the need to optimize energy conversion and utilizing innovative collector and membrane technologies for improved performance. The economic implications of solar desalination are also scrutinized, as this chapter navigates through initial investment challenges, economic feasibility, and strategies for cost reduction. The complexities of scaling up and integrating solar desalination systems within existing infrastructure are addressed, revealing the engineering challenges that arise during this transition. This chapter further delves into the critical considerations of water quality, sustainability, and the interplay between energy and water production, showcasing the potential for renewable energy synergy. Real-world case studies spotlight successful solar desalination projects, illustrating their impact on communities, regions, and industries. These examples underscore lessons learned and implications for wider adoption, ranging from community engagement to economic viability. This chapter concludes by advocating for continued research, innovation, and collaboration in the field, recognizing their pivotal roles in unlocking the full potential of solar desalination and ensuring a sustainable water future. In essence, this chapter encapsulates the dynamic landscape of solar desalination techniques, unearthing their challenges and opportunities as integral components in the global pursuit of water security and environmental stewardship.