Production of phenol-rich bio-oil during catalytic fixed-bed and microwave pyrolysis of palm kernel shell. (May 2016)

• Record Type: Journal Article
• Authors: Omoriyekomwan, Joy Esohe; Tahmasebi, Arash; Yu, Jianglong
• Is Part Of: Bioresource technology. Volume 207(2016)
• Page Start: 188
• Page End: 196
• Publication Date: 2016-05
• Subjects: Biomass -- Catalytic pyrolysis -- Microwave irradiation -- Phenolic compounds; 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.2016.02.002
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Catalytic pyrolysis of palm kernel shell using microwave and fixed-bed is studied. Local fluidity development in biomass particles in microwave pyrolysis was observed. Catalytic microwave pyrolysis enhances the selectivity of phenol in bio-oil. Phenol content reached 64.58 %(area) at 500 °C with activated carbon as catalyst. Abstract: Catalytic fixed-bed and microwave pyrolysis of palm kernel shell using activated carbon (AC) and lignite char (LC) as catalysts and microwave receptors are investigated. The effects of process parameters including temperature and biomass:catalyst ratio on the yield and composition of pyrolysis products were studied. The addition of catalyst increased the bio-oil yield, but decreased the selectivity of phenol in fixed-bed. Catalytic microwave pyrolysis of PKS significantly enhanced the selectivity of phenol production. The highest concentration of phenol in bio-oil of 64.58 %(area) and total phenolics concentration of 71.24 %(area) were obtained at 500 °C using AC. Fourier transform infrared spectroscopy (FTIR) results indicated that concentration of OH, CH, CO and CO functional groups in char samples decreased after pyrolysis. Scanning electron microscopy (SEM) analysis clearly indicated the development of liquid phase in biomass particles during microwave pyrolysis, and the mechanism is also discussed.