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Microwave-assisted fast pyrolysis of hazardous waste engine oil into green fuels 149

Fig. 5.12 FT-IR spectrum for different pyrolysis fuels.

were CdH stretching alkanes, minor amounts of C]H bending/deformation alkanes,
and a very few C]H bending alkenes. Similarly, chemical compounds found in char
produced from the MAP were CdH stretching alkanes, minor amounts of C]H
bending/deformation alkanes, and a very few C]H bending alkenes as well as single
ring aromatics are shown in Table 5.3.

Table 5.3 FT-IR spectroscope with frequency range

Frequency range
21
(cm ) Functional groups Classification of compounds
3200–3400 OdH stretching Alcohols, phenols, or carboxylic
acid
2750–3000 CdH stretching Alkanes
1700–2100 C]O stretching Aldehydes, ketones, or carboxylic
acid
1575–1675 C]C stretching Alkenes
1345–1500 C]H bending/ Alkanes
deformation
900–1200 C]H bending Alkenes
675–850 CdH out of plane Single ring aromatics
bending