Effect of Fe0 particle size on buffering characteristics and biohydrogen production in high-load photo fermentation system of corn stover. (November 2022)

• Record Type: Journal Article
• Authors: Zhu, Shengnan; Zhang, Yang; Zhang, Zhiping; Li, Yameng; Ai, Fuke; Zhang, Quanguo
• Is Part Of: Bioresource technology. Volume 364(2022)
• Publication Date: 2022-11
• Subjects: Fe0 particle size -- High-load photo fermentation -- Biohydrogen -- Corn stover; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2022.128086
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Fe 0 was first applied to high-load photo fermentation system of corn stover. Effects of Fe 0 sizes (700, 100 and 50 nm) on hydrogen production were compared. Fe 0 buffered pH, stimulated nitrogenase activity and accelerated acid utilization. Adding 1000 mg/L Fe 0 -700 obtained the highest hydrogen yield increment of 92.88 %. Abstract: The aim of this work was to study the effects of Fe 0 particle sizes (700 nm, 100 nm and 50 nm) addition on biohydrogen production, liquid culture characteristics and photosynthetic bacterial respond in the high-load photo fermentation system of corn stover within the concentration range of 200–1500 mg/L. Results showed that Fe 0 with particle size of 700 nm had a better promotion effect on hydrogen production than 100 nm and 50 nm. The highest hydrogen yield of 74.32 ± 3.48 mL/g TS and hydrogen production rate of 3.31 ± 0.11 mL/g·h TS corn stover were obtained at 1000 and 1500 mg/L Fe 0 -700 nm, which were significantly increased by 92.88 % and 133.88 % compared with the control group. Further analysis indicated that Fe 0 addition effectively alleviated pH drop, enhanced nitrogenase activity, promoted cell growth, and accelerated the consumption of acetic acid and butyric acid.