Development and application of a continuous fast microwave pyrolysis system for sewage sludge utilization

Junwen Zhou; Shiyu Liu; Nan Zhou; Liangliang Fan; Yaning Zhang; Peng Peng; Erik Anderson; Kuan Ding; Yunpu Wang; Yuhuan Liu; Paul L Chen; R. R Ruan

doi:10.1016/j.biortech.2018.02.034

Development and application of a continuous fast microwave pyrolysis system for sewage sludge utilization

Junwen Zhou, Shiyu Liu, Nan Zhou, Liangliang Fan, Yaning Zhang, Peng Peng, Erik Anderson, Kuan Ding, Yunpu Wang, Yuhuan Liu, Paul L Chen, R. R Ruan

Bioproducts and Biosystems Engineering

Research output: Contribution to journal › Article › peer-review

97 Scopus citations

Abstract

A continuous fast microwave-assisted pyrolysis system was designed, fabricated, and tested with sewage sludge. The system is equipped with continuous biomass feeding, mixing of biomass and microwave absorbent, and separated catalyst upgrading. The effect of the sludge pyrolysis temperature (450, 500, 550, and 600 °C) on the products yield, distribution and potentially energy recovery were investigated. The physical, chemical, and energetic properties of the raw sewage sludge and bio-oil, char and gas products obtained were analyzed using elemental analyzer, GC–MS, Micro-GC, SEM and ICP-OES. While the maximum bio-oil yield of 41.39 wt% was obtained at pyrolysis temperature of 550 °C, the optimal pyrolysis temperature for maximum overall energy recovery was 500 °C. The absence of carrier gas in the process may be responsible for the high HHV of gas products. This work could provide technical support for microwave-assisted system scale-up and sewage sludge utilization.

Original language	English (US)
Pages (from-to)	295-301
Number of pages	7
Journal	Bioresource Technology
Volume	256
DOIs	https://doi.org/10.1016/j.biortech.2018.02.034
State	Published - May 2018

Bibliographical note

Funding Information:
This project is supported in part by the Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative ‐ Citizen Commission on Minnesota Resources (LCCMR), Xcel Energy, MCES, and UMN MNDrives and Center for Biorefining.

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

Biochar
Continuous pyrolysis system
Energy recovery potential
Fast microwave-assisted pyrolysis
Sewage sludge

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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abstract = "A continuous fast microwave-assisted pyrolysis system was designed, fabricated, and tested with sewage sludge. The system is equipped with continuous biomass feeding, mixing of biomass and microwave absorbent, and separated catalyst upgrading. The effect of the sludge pyrolysis temperature (450, 500, 550, and 600 °C) on the products yield, distribution and potentially energy recovery were investigated. The physical, chemical, and energetic properties of the raw sewage sludge and bio-oil, char and gas products obtained were analyzed using elemental analyzer, GC–MS, Micro-GC, SEM and ICP-OES. While the maximum bio-oil yield of 41.39 wt% was obtained at pyrolysis temperature of 550 °C, the optimal pyrolysis temperature for maximum overall energy recovery was 500 °C. The absence of carrier gas in the process may be responsible for the high HHV of gas products. This work could provide technical support for microwave-assisted system scale-up and sewage sludge utilization.",

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AU - Peng, Peng

AU - Anderson, Erik

AU - Ding, Kuan

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AU - Liu, Yuhuan

AU - Chen, Paul L

AU - Ruan, R. R

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Development and application of a continuous fast microwave pyrolysis system for sewage sludge utilization

Abstract

Bibliographical note

Keywords

UN SDGs

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