Campus Units

Mechanical Engineering, Agricultural and Biosystems Engineering, Chemical and Biological Engineering, Bioeconomy Institute (BEI), Food Science and Human Nutrition

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

11-2019

Journal or Book Title

Bioresource Technology

Volume

292

First Page

121976

DOI

10.1016/j.biortech.2019.121976

Abstract

Among the products of pyrolysis is an aqueous phase (AP), which contains a significant fraction of carbon but is too dilute to make recovery of this organic content cost-effectively. This study was to explore the use of AP for anaerobic digestion. Different treatment methods including overliming, Fenton's reagent oxidation, bleaching and activated carbon adsorption were investigated to reduce toxicity of AP. Overliming treatment increased biogas production up to 32-fold compared to non-treated AP. Enhancing the tolerance of the bacterial and archaeal community to the AP toxicity was also attempted with a directed evolution method, resulting the microbes’ tolerance to AP from 5% to 14%. Directed evolution resulted a major bacterial taxa as Cloacimonetes, Firmicutes, and Chloroflexi, while shifted the predominant archaea shifted from acetoclastic to hydrogenotrophic methanogens. Collectively, the results demonstrated that combining feedstock treatment and directed evolution of the microbial community is an effective way for AP anaerobic digestion.

Comments

This is a manuscript of an article published as Zhou, Haoqin, Robert C. Brown, and Zhiyou Wen. "Anaerobic digestion of aqueous phase from pyrolysis of biomass: reducing toxicity and improving microbial tolerance." Bioresource Technology (2019): 121976. DOI: 10.1016/j.biortech.2019.121976. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier Ltd.

Language

en

File Format

application/pdf

Available for download on Monday, August 09, 2021

Published Version

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