Particle swarm optimization and global sensitivity analysis for catalytic co-pyrolysis of Chlorella vulgaris and plastic waste mixtures

Majid, Mahrima; Chin, Bridgid Lai Fui; Jawad, Zeinab Abbas; Chai, Yee Ho; Lam, Man Kee; Yusup, Suzana; Cheah, Kin Wai

Abstract

This study investigated on the co-pyrolysis of microalgae Chlorella vulgaris and high-density polyethylene (HDPE) waste mixtures which was performed with three types of catalysts, namely limestone (LS), HZSM-5 zeolite, and novel bi-functional LS/HZSM-5/LS. Kissinger-Kai (K-K) model-free method was coupled with Particle Swarm Optimization (PSO) model-fitting method using the thermogravimetric experimental data. A global sensitivity analysis was carried out using Latin Hypercube Sampling and rank transformation to assess the extent of impact of the input kinetic parameters on the output results. Furthermore, a thermodynamic analysis was performed to obtain parameters such as enthalpy change (ΔH), Gibb’s free energy (ΔG), and entropy change (ΔS). The activation energy (EA) of the microalgae Chlorella vulgaris and HDPE binary mixture were found to be lower upon the addition of catalysts. Among the catalyst used, bi-functional LS/HZSM-5 catalyst exhibited the lowest EA (83.59 kJ/mol) and ΔH (78 kJ/mol) as compared to LS and HZSM-5 catalysts.

Citation

Majid, M., Chin, B. L. F., Jawad, Z. A., Chai, Y. H., Lam, M. K., Yusup, S., & Cheah, K. W. (2021). Particle swarm optimization and global sensitivity analysis for catalytic co-pyrolysis of Chlorella vulgaris and plastic waste mixtures. Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies, 329, Article 124874. https://doi.org/10.1016/j.biortech.2021.124874

• Journal Article Type: Article
• Acceptance Date: Feb 16, 2021
• Online Publication Date: Feb 23, 2021
• Publication Date: 2021-06
• Deposit Date: Sep 7, 2021
• Publicly Available Date: Feb 24, 2022
• Journal: Bioresource Technology
• Print ISSN: 0960-8524
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 329
• Article Number: 124874
• DOI: https://doi.org/10.1016/j.biortech.2021.124874
• Keywords: Co-pyrolysis; Microalgae Chlorella vulgaris; High-density polyethylene waste; Kinetics; Particle swarm optimization; Thermodynamic
• Public URL: https://hull-repository.worktribe.com/output/3833367