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Evaporation mitigation assessment by self-assembled nano-thickness films in shallow fresh water lake using fixed and semi-floating pans

Nejatian, A ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1007/s40710-022-00599-3
  3. Publisher: Springer Science and Business Media Deutschland GmbH , 2022
  4. Abstract:
  5. Controlling evaporation plays an essential role in arid and semi-arid water resources systems where it accounts for a considerable amount of reservoirs outflow. In this study, we have evaluated evaporation reduction efficiency of different kinds of self-assembled nano-thickness films. The films consist of six different combinations of stearyl and cetyl alcohols with additives such as jojoba oil, stearic acid, and calcium hydroxide. The study lasted from July to August and utilized two pairs of class A evaporation pans: one pair was semi-floating on Chitgar lake water surface while the other one was located on the shore. The experimental results showed that a monolayer containing 3:1 stearyl to cetyl alcohols with 60% weight of calcium hydroxide had the best performance and could reduce evaporation up to 50% during its three-day lifetime. The study indicated that while the films had no significant side effects on lake water pH, turbidity, and total suspended solids, a slight increase in water surface temperature was observed. It can be concluded that application of such monolayers in areas suffering from high evaporation could be conducive to better water resources management. © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG
  6. Keywords:
  7. Evaporation pan ; Fatty alcohol ; Self-assembled monolayers ; Additives ; Alcohols ; Hydrated lime ; Lakes ; Lime ; Reservoirs (water) ; Self assembled monolayers ; Cetyl alcohol ; Chitgar lake ; Evaporation mitigation ; Evaporation pans ; Fatty alcohols ; Fresh water lakes ; Lake waters ; Reservoir outflows ; Semi arid ; Water resources systems ; Evaporation ; Alcohol ; Hydroxide ; Lake water ; Performance assessment ; Surface temperature ; Water management ; Water resource ; Iran ; Tehran [Iran]
  8. Source: Environmental Processes ; Volume 9, Issue 3 , 2022 ; 21987491 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s40710-022-00599-3