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Bulletin of Pure & Applied Sciences- Physics
Year : 2011, Volume : 30d, Issue : 1
First page : ( 171) Last page : ( 176)
Print ISSN : 0970-6569. Online ISSN : 2320-3218.

Essence recovery from flowers through solar thermal distillation process

Mahto Bidyanand,  Archana,  Rakhi, Sahu Laxmi Prasad, Prasad Bhagwan

University Deptt. of Physics, B.R.A. Bihar University, Muzaffarpur (Bihar)


Present work have used the solar distillation process for the production of rose water traditionally or commercially it was presented by using fossil fuel which was very costly and polluting the atmosphere.

In this process the cost is involved while establishing the device and no recurring cost is involved in operating this system because solar energy is available in abundant on the earth during day time. The operating temperature for this preparation is about 15°C to 30°C which is easily available about 10 hours during day time in solar still.

Rose petals cover the blackened surface of solar still. So its efficiency reduces to avoid this in our system we have used the black powder (Charcoal) which compensates the working of solar still. The Quantity of rose water is increased by doubling the quantity of rose petals keeping volume of water constant. To preserve rose water for a long period we use preservatives, the common preservative is vodka (pure form of alcohol).



Solar still, solar distillation, rose petals, charcoal powder, distilled water.


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