Gas Chromatography—Mass Spectrometry for Characterization of Liquid Products from Pyrolysis of Municipal Waste and Spent Tyres

Abstract

Summary. Liquid products produced from two different types of waste pyrolysismunicipal wastes and spent tyre wastes are investigated using gas chromatographymass spectrometry. This method has been applied for detailed identification of composition of the samples. The components were characterized in terms of their Kováts retention indices on a PONA capillary column. The obtained analytical data were successfully used for the characterization of the samples. More than three hundred compounds were detected. The liquid products were complex mixtures, composed mainly of C 4 -C 12 compounds. The examination of the selected m/z values very clearly indicates the existence of the different groups of compounds. With a lot of olefins content (31.9%), followed by aromatics (20.0%), paraffins (17.3%), and naphthenes (7.5%), it is described as the liquid product from pyrolysis of municipal solid wastes. The aromatic compounds in liquid product from pyrolysis of spent tyre wastes have the highest concentration (33.5%), and they are followed by naphthenes (28.6%), olefins (19.2%), and paraffins compounds (7.0%). The present study has shown that the pyrolysis of municipal waste and spent tyres can be used as a means for reduction of environmental pollution and production of liquid product which could be used as a fuel source.

Zeolite catalytic pyrolysis of waste tire into fuel in gasoline hydrocarbon range

“…The aromatic compounds in TPO from pyrolysis of wastes tire have the highest fraction concentration (13.14 %), and they are followed by naphthene (6 %), di-olefins (3.53 %), and cycloparaffins compounds (13.13 %). This result is in accordance with the results reported by Pavlopa et al [22].…”

Waste tires pyrolysis oil as a source of energy: Methods for refining

“…Pavlova et al 13 and Australian scientists Kan et al 14 have used gas chromatography-mass spectrometry (GC-MS) for characterization of liquid products from pyrolysis of spent tires and have established that pyrolysis liquids contain alkanes, cycloalkanes, and alkenes (C4-C12) as well as arenes-predominantly alkylbenzenes and alkylnaphthalenes. Kan et al 14 show and compare the chemical composition of pyrolysis liquids obtained from four types of feedstock-pneumatic tires, refractory synthetic, and two types of natural rubber.…”

“…Pavlova et al 13 investigated the liquid product (boiling range of 35–200°C) produced from spent tire and identified the following sulfur compounds: thiophene, 2-methyl thiophene, 2-[1-methylethyl] ethyl mercaptan, and 1-(4-methoxymethyl) phenylbenzothiazole.…”