Back to Search
Start Over
Enhanced Bio-Electro-Fenton degradation of phenolic compounds based on a novel Fe–Mn/Graphite felt composite cathode
- Source :
- Chemosphere. 234:260-268
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Phenolic compounds are problematic byproducts generated from lignocellulose pretreatment. In this study, the feasibility degradation of syringic acid (SA), vanillic acid (VA), and 4-hydroxybenzoic acid (HBA) by Bio-Electro-Fenton (BEF) system with a novel Fe–Mn/graphite felt (Fe–Mn/GF) composite cathode were investigated. The nano-scale Fe–Mn multivalent composite catalyst with core shell structure distributed more evenly on GF surface to form a catalyst layer with higher oxygen reduction reaction performance. Accordingly, the maximum power density generated with Fe–Mn/GF cathode was 48.1% and 238.9% higher than Fe/GF and GF respectively, which further enhanced the in situ generation of H2O2 due to the superiority of nano-scale core shell structure and synergistic effect of Fe and Mn species. The degradation efficiency of the three phenolic compounds in the BEF system could reached 100% after optimization of influencing parameters. Furthermore, a possible SA degradation pathway by BEF process in the present system was proposed based on the detected intermediates. These results demonstrated an efficient approach for the degradation of phenolic compounds derived from lignocellulose hydrolysates.
- Subjects :
- Environmental Engineering
Iron
Health, Toxicology and Mutagenesis
0208 environmental biotechnology
Composite number
02 engineering and technology
010501 environmental sciences
01 natural sciences
Catalysis
Hydrolysate
law.invention
chemistry.chemical_compound
Phenols
law
Electrochemistry
Vanillic acid
Environmental Chemistry
Graphite
Electrodes
0105 earth and related environmental sciences
Manganese
Public Health, Environmental and Occupational Health
Hydrogen Peroxide
General Medicine
General Chemistry
Syringic acid
Pollution
Cathode
020801 environmental engineering
chemistry
Degradation (geology)
Nuclear chemistry
Subjects
Details
- ISSN :
- 00456535
- Volume :
- 234
- Database :
- OpenAIRE
- Journal :
- Chemosphere
- Accession number :
- edsair.doi.dedup.....01bf136bd094f4e3c4440ed2b3b6e95b