Construction of novel microbial consortia CS-5 and BC-4 valued for the degradation of catalpa sawdust and chlorophenols simultaneously with enhancing methane production

Sameh S Ali; Ahmed M Mustafa; Michael Kornaros; Alessandro Manni; Jianzhong Sun; Maha A Khalil

doi:10.1016/j.biortech.2019.122720

Construction of novel microbial consortia CS-5 and BC-4 valued for the degradation of catalpa sawdust and chlorophenols simultaneously with enhancing methane production

Bioresour Technol. 2020 Apr:301:122720. doi: 10.1016/j.biortech.2019.122720. Epub 2020 Jan 2.

Authors

Sameh S Ali¹, Ahmed M Mustafa², Michael Kornaros³, Alessandro Manni⁴, Jianzhong Sun⁵, Maha A Khalil⁶

Affiliations

¹ Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
² College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Department of Agricultural Engineering, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt.
³ Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504 Patras, Greece.
⁴ Department of Industrial Engineering, University of Rome Tor Vergata, Italy.
⁵ Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China. Electronic address: jzsun1002@ujs.edu.cn.
⁶ Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Biology Department, Faculty of Science, Taif University, Saudi Arabia.

PMID: 31945685
DOI: 10.1016/j.biortech.2019.122720

Abstract

This study might be the first to explore the novel constructed microbial consortia CS-5 and BC-4 for enhancing methane (CH₄) production during anaerobic digestion (AD) with simultaneous degradation of catalpa sawdust and chlorophenols (CPs). Significant reduction in cellulose, hemicellulose and lignin contents was achieved after the biodegradation of catalpa sawdust for 15 days by CS-5 and BC-4, with a total weight loss of 69.2 and 56.3%, respectively. The synergistic microbial consortia enhanced cumulative biogas and CH₄ yields by 76.3 and 64.3%, respectively higher than the corresponding control at the end of AD. More than 90% of CH₄ was produced within 18 days of AD as a result of microbial pretreatment of catalpa sawdust. These consortia resulted in remarkably higher energy conversion efficiency of 44.3% (218.1 L_N CH₄/kg TS) over the control. CS-5 and BC-4 removed more than 69 and 77% of the total amount of CPs tested after 15 days.

Keywords: Anaerobic digestion; Biological pretreatment; Catalpa sawdust; Chlorophenols; Lignocellulose structure; Microbial consortium.

MeSH terms

Anaerobiosis
Biofuels
Chlorophenols*
Lignin
Methane
Microbial Consortia*
Wood

Substances

Biofuels
Chlorophenols
Lignin
Methane