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Solar still is one of the most promising technology to convert available brackish or saline water into drinkable water. It is not widely used due to its lower distillate output from it. Passive and active are main two types of solar still. Distillate output of passive solar still is lower compared with active solar still. Hence, for increment in distillate output from the solar still, then active solar still is only a viable option. Present review paper shows the various techniques available in active solar still for increment in distillate output.

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