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Abstract
Globally, the rate of water consumption has been growing with the increase in population in the last century. Essentially, renewable methods are focused on the yielding of potable water. Potable water from air humidity is one of the most important and innovative solutions for the problem. There are several available solutions to meet the problem of water scarcity like water reuse, storage, and numerous water treatment technologies such as desalination. The problem of fresh water may be solved by the method of desalination but this method demands a lot of energy. This demand for energy is furnished by burning of fossil fuels, and the burning of fossil fuels pollutes the environment to a great extent. Due to this problem of desalination method, researchers are working in the area of desiccant method of potable water generation. In the desiccant method, water vapours from the air are adsorbed by the desiccants and these water vapours are condensed by the regeneration of desiccants. The regeneration of desiccant can be easily done from low-grade energy sources like solar energy. Atmospheric air and solar energy is abundantly available on earth, so the desiccant method of getting fresh water may be a good solution to solve the water scarcity problem.
Highlights:
This review provides a wide spread summary of recent developments in water production systems through desiccants using solar passive systems.
Various types of water production systems have been compared and summarised in table form.
This article covers the working principles of systems and processes for the production of water from ambient air.
Different types of solar thermal collectors and desiccants have been discussed and reviewed.
Disclosure statement
No potential conflict of interest was reported by the author(s).