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Motor vehicles scrap tires and tube rubbers generate a large amount of waste with dii¬€erent characteristics and compositions, contaminating the environment when not properly disposed. Waste inner tube rubber (isobutylene isoprene) representing a threat to the environment can be used as source of energy and valuable. Waste inner tube rubber was pyrolysed thermally under atmospheric pressure both with and without catalyst. Parameters of temperature, time and catalyst weight were optimized for catalytic and thermal pyrolsis of isobutylene-isoprene rubber into liquid fuel, using MgO as catalyst. It was found that one-hour heating time at 350Â°C using 2g catalyst (MgO) are suitable parameter for maximum conversion of scrap inner tube rubber into oil. The oil obtained was characterized by physical and chemical tests. Among the physical test Density, Specific gravity, Viscosity, Kinematic viscosity, Analine point and Flash point were determined according to IP and ASTM standard valves. The physical tests indicate the presence of aromatic and olefinic hydrocarbons. Among the chemical tests Phenol test, Bromine number, Bromine water test and KMnO4 tests were conducted. The chemical tests are also the support of physical tests conducted. The physical and chemical tests indicate that the oil obtained is a mixture of kerosene, diesel and light oil and could be used for fuel purposes.

Conditions Optimization and Physiochemical Analysis of Oil Obtained by Catalytic Pyrolysis of Scrap Tube Rubber Using MgO as Catalyst