The degradation of polychlorinated biphenyls (PCBs) and total organic carbon (TOC) by sediment microbial fuel cell (SMFC) with/without nanoscale zero-valent iron (NZVI) addition was investigated. It was found that the combined application led to the highest removal efficiencies of PCBs (37.55 ± 1.11%) and TOC (49.72 ± 1.54%) in all circumstances and produced a higher power density (108.89 mW/m) and a corresponding lower internal resistance (264 Ω) than operation employing SMFC only. The TOC removal efficiency and the total production of electricity were linear. High-throughput sequencing of anodic microbial communities indicated that the electrode participation can increase the abundance of electrogenic bacteria (Geobacter and Pseudomonas) and the NZVI addition can reduce the oxidation reduction potential of the system and therefore enrich some bacteria (Longilinea and Desulfofustis) beneficial to the degradation of organic matter.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.scitotenv.2018.11.326 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of zero-valent iron particle size on alleviating acid stress in anaerobic digestion of food waste.
Environ Res
January 2025
School of Environment and Energy, Peking University Shenzhen Graduate School, University Town, Xili, Nanshan District, 518055, Shenzhen, China.
This work evaluated the effect of zero-valent iron (ZVI) particle size (150 μm-100 nm) on the performance of food waste anaerobic digestion (AD) under various acid stress conditions. The results indicated that ZVI significantly improved the AD performance, ensuring successful CH production even under high acid stress. However, the extent of this promoting effect was highly dependent on the particle size.
View Article and Find Full Text PDFIntrinsic structure-function connections of carbon-encapsulated nanoscale zero-valent-iron using various pyrolysis atmospheres.
J Environ Manage
January 2025
Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental and Resource Sciences, Fujian Normal University, Fuzhou, 350117, Fujian Province, China. Electronic address:
Carbon-encapsulated nanoscale zero-valent-iron (C@Fe) derived from plant-based extracts has been the subject of growing interest due to its environmental friendliness. However, the effects of various pyrolysis atmospheres on the structure-function connections of C@Fe are still unclear. In this study, three pyrolytic atmospheres, namely Air, N, and 5% H/Ar were selected to fabricate X-C@Fe (X represented as A, N, H) for removing 2,4,6-Trichlorophenol (TCP), and the relationships between their structures and functions were demonstrated.
View Article and Find Full Text PDFEnhanced remediation of organotin compounds and metal(loid)s in polluted sediments: Chemical stabilization with mining-wastes and nZVI versus physical soil washing.
J Environ Manage
January 2025
INDUROT and Environmental Biogeochemistry & Raw Materials Group, Campus of Mieres, University of Oviedo, 33600, Mieres, Spain.
Here we describe two innovative approaches for remediating sediments contaminated with organotin compounds (OTCs, mainly TBT) and metal(loid)s. The first involves chemical stabilization through amendments with nanoscale zero-valent iron (nZVI), dunite mining waste, and coal tailings, materials that have not been previously studied for OTC remediation. The second focuses on physical soil washing, using grain-size separation and magnetic separation to isolate the most polluted fractions, thereby reducing the volume of contaminated material destined for landfills.
View Article and Find Full Text PDFGreen synthesized nanoscale zero-valent iron impregnated tea residue biochar efficiently captures metal(loid)s for sustainable water remediation.
J Environ Manage
January 2025
Korea Biochar Research Center, Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Korea.
Pristine or modified nanoscale zero-valent iron (nZVI) synthesized though conventional chemical reduction have been widely recommended for remediating metal(loid)-contaminated water. However, their eco-friendliness is often challenged with the concomitant bio-toxicity and secondary environmental risks. Alternatively, this study utilized waste tea leaves extract and remaining residue as the reducing agent and pyrolytic matrix to innovatively fabricate a green synthesized nZVI impregnated tea residue biochar (G-nZVI/TB).
View Article and Find Full Text PDFMolecular insights into the anti-cancer activity of chitosan-okra mucilage polymeric nanocomposite doped with nano zero-valent iron against multi-drug-resistant oral carcinoma cells.
Int J Biol Macromol
January 2025
Centre for Applied Research, Saveetha School of Engineering, Saveetha institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu 602105, India.
Recent advances in nanotechnology, particularly those utilizing polymeric nanocomposites, have garnered significant attention for their effectiveness and biocompatibility in cancer diagnosis and treatment. In this study, a chitosan-okra mucilage polymeric nanocomposite doped with nano zero-valent iron (CS-OM-nZVI), synthesized using green chemistry principles, was evaluated for its anti-cancer activity against drug-resistant oral carcinoma cells (KBChR). The nanocomposite was created from chitosan, mucilage derived from okra biomass, and nano zerovalent iron particles synthesized through chemical reduction.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!