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The IUP Journal of Mechanical Engineering
An Investigation into the Release of Air Pollutant Gases During Thermal Degradation of Furan Sand
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The paper analyzes the gases releasing from the furan binder samples using conventional process. For the preparation of sample sand, resin and catalyst were used in the ratio of 100:0.85:0.30. In order to increase the understanding of the gas releasing mechanism from furan binder, various studies like Fourier Transform Infrared (FTIR), Thermo Gravimetric Analysis (TGA) and Gas Chromatography-Mass Spectrometry (GC-MS) were carried out. After analyzing the materials using the above-mentioned characterizations, the chemical formula of the resin and binder was confirmed. After studying various reports on the pyrolysis process of furan binder, calculation of the percentage of various gases emitted during pyrolysis process of furan was carried out. Based on the investigation already reported in the papers, gases emitting from pyrolysis process were identified and its amounts were calculated. Based on the calculation, the total amount of gases releasing during a day was calculated and compared with the international standards of permissible gas emission limits in a foundry.

 
 

Metal casting industries have been described as the most direct and shortest route from component design to production (Ireland et al., 2002). Any ferrous and nonferrous metal that can be melted can also be cast and the design of the casting can be very flexible. This flexibility allows the foundry industry to produce simple or complex components of enormous variety, whether they are produced once as a prototype or thousands of times for use in a manufactured product. It is not surprising that 90% of all goods and machinery are prepared through metal forming technique (Ireland, 2002). The present and future adverse effects of this foundry process, their damage to the environment and to the earth’s ecosystem and ultimately their effect on the quality of human life are well familiar to the world. Casting plays a valuable role in the effect of water and air pollution, acid rain, ozone exhaustion, the green house effect, hazardous waste and global warming (Ambidge, 1985).

 
 

Furan, Catalyst, Gas Chromatography-Mass Spectrometry (GC-MS), Fourier Transform Infrared (FTIR), Furan-No Bake (FNB) Binder, Thermo Gravimetric Analysis (TGA), Pyrolysis