Production of bio-oil and biochar from soapstock via microwave-assisted co-catalytic fast pyrolysis. (February 2017)

• Record Type: Journal Article
• Authors: Dai, Leilei; Fan, Liangliang; Liu, Yuhuan; Ruan, Roger; Wang, Yunpu; Zhou, Yue; Zhao, Yunfeng; Yu, Zhenting
• Is Part Of: Bioresource technology. Volume 225(2017)
• Page Start: 1
• Page End: 8
• Publication Date: 2017-02
• Subjects: Microwave -- Catalytic fast pyrolysis -- Bentonite -- HZSM-5 -- Bio-oil -- Bio-char; 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.2016.11.017
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: This is the first time to integrate the in-situ and ex-situ catalysis into pyrolysis process. The effects of catalyst and temperature on bio-oil and bio-char production were investigated. The proportions of oxygenates and N-containing compounds were reduced significantly. The BET surface area and removal efficiency of Cd 2+ were enhanced by the addition of bentonite. Abstract: In this study, production of bio-oil and biochar from soapstock via microwave-assisted co-catalytic fast pyrolysis combining the advantages of in-situ and ex-situ catalysis was performed. The effects of catalyst and pyrolysis temperature on product fractional yields and bio-oil chemical compositions were investigated. From the perspective of bio-oil yield, the optimal pyrolysis temperature was 550 °C. The use of catalysts reduced the water content, and the addition of bentonite increased the bio-oil yield. Up to 84.16 wt.% selectivity of hydrocarbons in the bio-oil was obtained in the co-catalytic process. In addition, the co-catalytic process can reduce the proportion of oxygenates in the bio-oil to 15.84 wt.% and eliminate the N-containing compounds completely. The addition of bentonite enhanced the BET surface area of bio-char. In addition, the bio-char removal efficiency of Cd 2+ from soapstock pyrolysis in presence of bentonite was 27.4 wt.% higher than without bentonite.