A review on advanced catalytic co-pyrolysis of biomass and hydrogen-rich feedstock: Insights into synergistic effect, catalyst development and reaction mechanism. (August 2020)

• Record Type: Journal Article
• Authors: Ahmed, Mohamed H.M.; Batalha, Nuno; Mahmudul, Hasan M.D.; Perkins, Greg; Konarova, Muxina
• Is Part Of: Bioresource technology. Volume 310(2020)
• Publication Date: 2020-08
• Subjects: Co-pyrolysis -- Zeolite -- Biomass deoxygenation -- Hydrogen transfer -- Active sites; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123457
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Catalytic co-pyrolysis of biomass and high-rich feedstock is reviewed. Synergistic interaction between hydrogen donor feedstock and biomass are presented. Effective catalysts for biomass deoxygenation and hydrogen transfer are compared. Co-pyrolysis addresses waste management goals by utilizing abundant waste feedstock. Abstract: The depletion of fossil fuel reserves and the growing demand for alternative energy sources are the main drivers of biomass and carbonaceous waste utilization. Particularly, non-edible lignocellulosic biomass is the most attractive renewable feedstock due to its abundance. Pyrolysis of biomass produces highly oxygenated compounds with oxygen content >35 wt%. The cost-effective elimination of oxygen from the pyrolysis oil is the most challenging task impeding the commercialization of biomass to biofuel processes. The effective hydrogen/carbon ratio in biomass pyrolysis oil is low (0.3), requiring external hydrogen supply to produce hydrocarbon-rich oils. Exploiting hydrogen-rich feedstock particularly, solid waste (plastic, tyre and scum) and other low-cost feedstock (lubricant oil, methane, methanol, and ethanol) offer an eco-friendly solution to upgrade the produced bio-oil. Multi-functional catalysts that are capable of cleaving oxygen, promoting hydrogen transfer and depolymerisation must be developed to produce hydrocarbon-rich oil from biomass. This review compares catalytic co-pyrolysis studies based on zeolites, mesoporous silica and metal oxides. Furthermore, a wide range of catalyst modifications and the role of each feedstock were summarised to give a complete picture of the progress made on biomass co-pyrolysis research and development.