Development of Metal Filter Device For Jeepneys

Authors

  • Anna Patricia Leones

Keywords:

Lump Charcoal, Filter, Jeepneys, Gases

Abstract

INTRODUCTION

In the Philippines, jeepneys are the most important means of transportation. However, they emit harmful gases such as hydrocarbons (HCs) and carbon monoxide (CO) which poses health and environmental problems. On the other hand, charcoal is known for its adsorptive property. Thus, developing a filter, which can be attached to exhaust pipes of jeeps with lump charcoal as its main component, can reduce the emission of these harmful gases.

 

METHODS

A pair of holes were created in the middle of the pipe where the aluminum wire is then inserted. After that, a sponge was inserted inside the tube to hold the charcoal with the inserted wire to support it. Next, 40g of lump charcoal is inserted inside the tube and a net was placed on the top of the pipe to enclose it and was held together by the aluminum wire. The filters were then tested on 15 jeepneys, used for more than 5 years and run by diesel fuel as their gas, found within the vicinity of Carmona, Cavite.RESULTSData has been gathered and collected. T-test was used to find out if there was a significant difference between the average amount of gases emitted by jeepneys with and without a filter. There is this standard percent of gases that a jeepney can emit is 2.20 therefore, all the jeepneys utilized was fell within the standard. Based on the data presented, the number of gases without filter ranged from 1.41 to 1.92 with an average of 1.59 while the number of gases with filter ranged from 1.1 to 1.38 with an average of 1.20. The t-test result between the number of gases with and without a filter was found out that the t-computed value was 8. 8.028193313 and the t-critical value was 1.761310115 at 0.05 level of significant with a degree of freedom of 14.

 

DISCUSSIONS

It was found out that the t-computed value was greater than the t-critical value. That means that there was a significant difference between the number of gases emitted by jeepneys with and without a filter. Therefore, the metal filter device was an effective filter.

Published

2019-01-18