Production of bio-oil and biochar from soapstock via microwave-assisted co-catalytic fast pyrolysis

Leilei Dai; Liangliang Fan; Yuhuan Liu; Roger Ruan; Yunpu Wang; Yue Zhou; Yunfeng Zhao; Zhenting Yu

doi:10.1016/j.biortech.2016.11.017

Production of bio-oil and biochar from soapstock via microwave-assisted co-catalytic fast pyrolysis

Bioresour Technol. 2017 Feb:225:1-8. doi: 10.1016/j.biortech.2016.11.017. Epub 2016 Nov 9.

Authors

Leilei Dai¹, Liangliang Fan², Yuhuan Liu¹, Roger Ruan², Yunpu Wang³, Yue Zhou¹, Yunfeng Zhao¹, Zhenting Yu¹

Affiliations

¹ Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China; Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China.
² Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China; Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.
³ Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China; Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China. Electronic address: wangyunpu@ncu.edu.cn.

PMID: 27875763
DOI: 10.1016/j.biortech.2016.11.017

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 84.16wt.% 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 15.84wt.% 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 Cd²⁺ from soapstock pyrolysis in presence of bentonite was 27.4wt.% higher than without bentonite.

Keywords: Bentonite; Bio-char; Bio-oil; Catalytic fast pyrolysis; HZSM-5; Microwave.

MeSH terms

Adsorption
Biofuels*
Biotechnology / methods*
Catalysis
Charcoal / metabolism*
Gas Chromatography-Mass Spectrometry
Hot Temperature*
Industrial Waste / analysis*
Microwaves*
Oils

Substances

Biofuels
Industrial Waste
Oils
biochar
Charcoal