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[lexussight]

could anyone help me here?? i'm doing my final year project.. which is so2 removal using prepared absorbent using rice husk ash impregnated with metal oxide.. the problem is my breaktrough time (tb) is not following the trend i got from journal.. for reactor temperature parameter, from the journal the 'tb' for so2 removal will decrease as the reactor temperature is increase... i'm doing my experiment for 5 different temp. and for t = 150c, 180c, 200c, 230c it follows the trend but for t = 250c the tb is increase... f.y.i i've repeat the experiment for 2 times for each absorbent i've prepared (2 type of absorbent) but the result is the same... could anyone help me????

this are the result:

temp. (celcius)......................breaktrough time (minutes)
150..................................................40
180..................................................24
200..................................................17
230..................................................10
250..................................................25

SO2 concentration = 2000 ppm