Dana Jamal Abdul - Jaleel
Modern Montessori School, Amman, Jordan
The concentration of acidic gases in diesel exhaust was measured. A device was made and tested to minimize these gases.
A 100ml of diesel exhaust was collected, and injected into a known, and excess sample of NaOH. The NaOH reacted with the acidic gases in the diesel exhaust. Back titration was then carried out to find the moles of the excess NaOH.
The moles of the reacted NaOH were calculated. From which, the acidic gases concentration in the exhaust of diesel powered cars was found to be 8.8 x 10-3 mol.dm-3.
Gas exhaust was pumped into 500ml of water (pH 6.69) for a period of 25seconds. The pH of the solution was found to be 4.84.This value was then used to find the number of moles of H+ in the sample (1.425 x 10-5 moles).
The flow rate of diesel exhaust was calculated, and was used to find both; the total volume of gas exhaust released into the environment every four month, and the concentration of H+ in the gas exhaust. This enabled me to find the number of moles of H+ released every 4 months (1.98mol).
A pipe was filled with 55g of CaO and Ca(OH)2, and was attached to the exhaust.. As a safety precaution, a pressure valve was attached to the duct, so as to ensure that no gas remains confined within the vehicle.
Acidic gases in diesel exhaust were reduced by 98%.