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Bio-electro-Fenton system for enhanced estrogens degradation
- Source :
- Bioresource technology. 138
- Publication Year :
- 2013
-
Abstract
- The feasibility of removing estrogens including 17β-estradiol (E2) and 17α-ethynyl-estradiol (EE2) was studied in a bio-electro-Fenton (BEF) system equipped with a Fe@Fe 2 O 3 /non-catalyzed carbon felt (NCF) composite cathode. E2 and EE2 were removed by reactive oxidants, produced by bio-electro-Fenton system and zero-valent iron/O 2 system, as well as adsorption. Under closed-circuit condition, 81% of E2 and 56% of EE2 were removed within 10 h in the system, in which the highest concentration of total iron ions and H 2 O 2 reached 81 and 1.2 mg/L, respectively. The maximum power density of BEF system equipped with Fe@Fe 2 O 3 /NCF electrode was 4.35 W/m 3 . Two intermediates of E1 and 6-OH-E2 were identified during Fenton oxidation of E2. This study demonstrates the degradation fate of E2 and EE2 in a BEF system equipped with Fe@Fe 2 O 3 /NCF electrodes, which provides a promising and cost-effective solution for the removal of recalcitrant contaminants with simultaneous power generation.
- Subjects :
- Environmental Engineering
Renewable Energy, Sustainability and the Environment
Chemistry
Bioelectric Energy Sources
Maximum power density
Iron
Bioengineering
Estrogens
General Medicine
Hydrogen Peroxide
Ion
Fenton oxidation
Carbon felt
Adsorption
Biodegradation, Environmental
Bioreactors
Electricity
Environmental chemistry
Electrode
Degradation (geology)
Composite cathode
Waste Management and Disposal
Electrodes
Nuclear chemistry
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 138
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....aacee6c393e4ffd68de1632a24ea2a60