Abstract
Motor vehicles scrap tires and tube rubbers generate a large amount of waste with different 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 valuable source of energy. Waste inner tube rubber was pyrolyzed thermally under atmospheric pressure both with and without catalyst. Parameters of temperature, time, and catalyst weight were optimized for catalytic and thermal pyrolysis of isobutylene-isoprene rubber into liquid fuel, using MgO as catalyst. It was found that one-hour heating time at 350 °C using 2 g catalyst (MgO) constitutes a suitable parameter for the maximum conversion of scrap inner tube rubber into oil. The oil obtained was characterized by physical and chemical tests. Among the physical tests, 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, the 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.
Highlights
Human lifestyle is improving rapidly, resulting in the increased demand for highend freeways and highways, increasing the demand for motor vehicles around the world
C2o. nRdeistuiolntsoapntdimDizisactuiosnsisofnor the yield of catalytic cracking of tube rubber were performed inCaosnydstietimonatiocpwtimayi,zwathioenres pfohrystihcealyainelddcohfemcaictalytteisctscroafctkhine goiol fprtoudbuecrtus bwbeerre were done.performed in a systematic way, where physical and chemical tests of the oil products were done. 2.1
Used tube rubber can advantageously be recycled via catalytic pyrolysis method
Summary
Human lifestyle is improving rapidly, resulting in the increased demand for highend freeways and highways, increasing the demand for motor vehicles around the world. Atashbar [26] used MgCl2 catalyst in a batch reactor for pyrolysis of waste tire under inert atmosphere, where they optimized conditions to 407.3 ◦C pyrolysis temperature, 12.5 mm particle size, 133.7 mL min−1 flow rate for 1800 s pyrolysis time using 11.5 wt% of catalyst They reported that the product oil with physical properties such as cetane number, viscosity, and density comparable to the commercial diesel fuel can be used as alternative fuel. The use of economic and available MgO catalyst for the conversion of waste tube rubber with well optimized conditions of temperature, time, and mass of catalyst is being reported where its influence on the composition and improved yield of derived oil is investigated. The obtained product oils were investigated of 13 via various physical and chemical tests in order to ensure its potential use as fuel
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