Enhancing photo-fermentation biohydrogen production from corn stalk by iron ion.

Chaoyang Lu, Danping Jiang, Yanyan Jing, Zhiping Zhang, Xiaoyu Liang, Jianzhi Yue, Yameng Li, Huan Zhang, Yang Zhang, Kaixin Wang, Ningyuan Zhang, Quanguo Zhang

Journal: Bioresource technology 2022;345():126457

PMID: 34863849

Full Text on Elsevier Science View on PubMed

Abstract

This study aimed to investigate the enhancement of iron ion on growth, metabolic pathway, and biohydrogen production performance of biohydrogen producing bacteria HAU-M1. Different concentrations of Fe and Fe were respectively added into fermentation broth of photo-fermentation biohydrogen production (PFHP) from corn stalk. Regular sampling test was used to measure the characteristics of fermentation broth and gas, metabolic pathway, energy conversion efficiency, and kinetic of PFHP. The analysis of experimental data showed that the maximum hydrogen yield of 70.25 mL/g was observed at 2500 μmol/L Fe addition, with an energy conversion efficiency of 5.21%, which was 19.98% higher over no-addition. However, the maximum hydrogen content of 51.41% and the maximum hydrogen production rate of 17.82 mL/h were observed at 2000 μmol/L Fe addition. The experimental results revealed that iron ion played a key role in PFHP, which provided a technical support for improving the performance of PFHP.

Address: Key Laboratory of New Materials and Facilities for Rural Renewable Energy (Ministry of Agriculture and Rural Affairs of China), Henan Agricultural University, Zhengzhou 450002, PR China.; Key Laboratory of New Materials and Facilities for Rural Renewable Energy (Ministry of Agriculture and Rural Affairs of China), Henan Agricultural University, Zhengzhou 450002, PR China. Electronic address: [email protected].

DOI: 10.1016/j.biortech.2021.126457

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MeSH Terms: Fermentation, Hydrogen, Hydrogen-Ion Concentration, Iron, Zea mays