Potential application of room temperature synthesized MIL-100(Fe) in enhancing methane production in microbial electrolysis Cells-Anaerobic digestion treating Protein-Rich wastewater

被引：0

作者：

Yan, Shenghan ^{[1
,3
,4
]}

Liu, Changqing ^{[2
,3
,4
]}

Luo, Xingguang ^{[5
]}

Wu, Chunshan ^{[1
,3
,4
]}

Zheng, Yuyi ^{[1
,3
,4
]}

Zhuo, Guihua ^{[6
]}

Zhen, Guangyin ^{[7
]}

机构：

[1] Fujian Normal Univ, Coll Environm & Resources, Coll Carbon Neutral Modern Technol, Pollut Control & Resource Recycling Lab Fujian Pro, Fuzhou 350007, Peoples R China

[2] Fujian Normal Univ, Coll Geog Sci, Coll Carbon Neutral Future Technol, Fuzhou 350007, Peoples R China

[3] Fujian Coll, Fuzhou 350007, Fujian, Peoples R China

[4] Univ Engn Res Ctr Municipal Solid Waste Resuscitat, Fuzhou 350007, Fujian, Peoples R China

[5] Yale Univ, Sch Med, Dept Psychiat, New Haven, CT 06510 USA

[6] Fujian Prov Acad Environm Sci, Fuzhou 350013, Peoples R China

[7] East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2024年 / 500卷

关键词：

Microbial electrolysis cell; Methane production; Protein utilization; MIL-100(Fe); HYDROGEN-PRODUCTION; DEGRADATION; RELEASE;

D O I：

10.1016/j.cej.2024.156904

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Microbial electrolysis cell-anaerobic digestion (MEC-AD) is an emerging technology for methane production. However, low substrate degradation efficiency remains a challenge when processing protein substrates. This study developed a MIL-100(Fe) carbon cloth anode to enhance methane production and substrate degradation in MEC-AD. The effects of MIL-100(Fe) prepared under hydrothermal (H-MIL-100(Fe)) and room temperature conditions (R-MIL-100(Fe)) were compared. Results indicated that H-MIL-100(Fe) and R-MIL-100(Fe) increased cumulative methane production by 16.01% and 14.99%, respectively compared to normal cloth, each influencing methane production through distinct mechanisms. Electrochemical characterization showed that H-MIL100(Fe) enhanced the electrochemical performance more significantly due to the enrichment of Geotalea, with the oxidation current improved by 7.39-fold (R-MIL-100(Fe) increased it by only 2.95-fold) to promote growth of Methanobacterium. Metagenomic analysis revealed that R-MIL-100(Fe) tended to metabolize amino acids into methane rather than support cellular life activities, indicating its practicality under limited substrate concentration. In summary, R-MIL-100(Fe) shows greater potential for application due to its mild synthesis conditions and advantages in treating complex substrates.

引用

页数：10