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Abstract:The effect of fireworks on the air quality was assessed from the ambient concentrations of various air pollutants (SO 2 , NO 2 , PM 10 and TSP) during Diwali festival in Hisar city (India), in November 1999. The extensive use of fireworks was found to be related with short-term variation in air quality. During the festival the concentration of SO 2 was observed to be increased ~10 -fold at few sites, whereas the concentrations of NO 2 , PM 10 and TSP increased 2-3 times, compared to the data collected on a typical winter day in December 1999. The maximum NO 2 concentration was observed a day after the festival. The diurnal pattern of the above pollutants showed a slight increase in the night. The levels of these pollutants observed during Diwali were found to be moderately high, which can be associated with serious health impacts.

A Ab bs st tr ra ac ct t. The adsorption potential of agricultural (sugarcane) by-product, the baggase was investigated in batch experiments with two different forms i.e., raw and chemically activated forms, for the removal of Methylene Blue dye, with different parameters like dye concentration, contact time, temperature and adsorbent dose. The removal is better and more effective with chemically activated baggase in comparison to the raw baggase. An average percent removal difference between the two adsorbents of around 18% was achieved under the different conditions in the experiment. The data fit well in the Freundlich isotherm. K Ke ey y w wo or rd ds s:

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