SWAS SAFAL and STAR recently seen in news is related to ........

Environment and Ecology Pollution

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SWAS,SAFAL and STAR recently seen in news is related to

Desalination technologies

Solid Waste Management

Less polluting firecrackers

Green building rating system

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Explanation:

CSIR developed Less Polluting Firecrackers named – safe water releaser (SWAS), safe minimal aluminium (SAFAL) and safe thermite cracker (STAR).
SWAS crackers eliminates usage of (KNO3) Potassium nitrate and Sulphur with consequent reduction in particulate matter (30-35%) SO2 and NOx.
STAR eliminates usage of KNO3 and S with consequent reduction in particulate matter (35-40%), SO2 and NOx.
SAFAL has minimal usage of aluminium (only in flash powder for initiation) with consequent significant reduction in particulate matter (35-40 %) compared to commercial crackers.