Your Solution To Lawnmower Pollution
Miguel Aroca-Ouellette
Point Grey Secondary
Floor Location : J 096 V

Climate change, the Greenhouse gas effect and Pollution sources have made the news headlines quite often recently. But, Instead of focusing on well-known contributors to pollution, in this project, I will focus on a less known but still significant polluter: the gas lawnmower. It should be known, that Using a gas lawnmower for an hour pollutes just as much as driving a typical car for 150 km, which we all know contributes to our global pollution. The purpose of this project is to reduce the amount of pollutants coming from gas lawnmowers, by first attempting make a catalyst to capture some of the pollutants and the by changing the fuel content. This was accomplished by adding ethanol to gasoline. Ethanol is a fuel that can be made renewably from corn or sugar cane crops. The exhaust of the lawnmower was characterized first by a comparative titration of the CO2. These results were then compared to very precise analytical results obtained in a test-cell. The exhaust content of the lawnmower forr different fuel ratios was then compared to the control.rnMy results demonstrate that I was able to reduce the toxic CO and HC emissions, but the CO2 emissions increased with the addition of ethanol in the fuel mixture. The latter is contrary to my null hypothesis (which was that all emissions would go down). rnThe titration results supported to the lab analysis.rnUnfortunately, I did not find a way to make a catalyst (because it was too difficult to obtain the materials used to make one; for example, rhodium and platinum). Interestingly, buying one costs more than the lawnmower itself, so this was also not feasible. My research suggests that using a catalyst and a mixed fuel would reduce the emissions by at least twice as much as just using the mixed fuel. rn