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Published in: Clean Technologies and Environmental Policy 3/2024

30-11-2023 | Original Paper

Energy generation from waste packaging plastic via thermo-catalytic pyrolysis using catalysts produced from spent aluminum hydroxide nanoparticles

Authors: Navneeta Lal, Shubhi Gupta, Hemant Goyal, Prasenjit Mondal

Published in: Clean Technologies and Environmental Policy | Issue 3/2024

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Abstract

Thermo-catalytic pyrolysis of waste packaging plastic was investigated in a semi batch reactor. Spent aluminum hydroxide nanoparticle derived from the electrocoagulation of arsenic and fluoride containing synthetic ground water was developed into catalyst through combined thermal treatment and metal impregnation process. Nickel, iron, zinc, copper, and molybdenum were separately doped on the surface of thermally activated spent sludge and the catalysts (Ni–Al, Fe–Al, Zn–Al, Cu–Al and Mo–Al) obtained were characterized through XRD, FTIR, FE-SEM, BET and NH3-TPD analysis. Cu–Al has demonstrated a higher yield of non-condensable gases (55%) whereas non-catalytic pyrolysis has shown larger oil yield (59.21%), followed by Al (53.36%) and Zn–Al (44.74%). The oil obtained from thermo-catalytic pyrolysis was analyzed via GC–MS and FTIR to determine the hydrocarbon chain distribution in terms of alkanes, alkenes, aromatics, and other cyclic compounds. Results highlighted varying impact of different catalysts on the components selectivity of oil, for instance, Ni–Al shows the highest selectivity for alkenes (77.69%), Fe–Al-derived oil carries highest proportion of alkanes (72.68%), while Zn–Al-derived oil contained alkenes, straight chains, and cyclic alkanes in almost equal proportion. Furthermore, less clogging of active sites and the retained morphological structure of spent catalysts as compared to other previously published studies indicated relatively larger possibility of regeneration and reutilization of spent catalyst.

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Appendix
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Metadata
Title
Energy generation from waste packaging plastic via thermo-catalytic pyrolysis using catalysts produced from spent aluminum hydroxide nanoparticles
Authors
Navneeta Lal
Shubhi Gupta
Hemant Goyal
Prasenjit Mondal
Publication date
30-11-2023
Publisher
Springer Berlin Heidelberg
Published in
Clean Technologies and Environmental Policy / Issue 3/2024
Print ISSN: 1618-954X
Electronic ISSN: 1618-9558
DOI
https://doi.org/10.1007/s10098-023-02644-7

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