Journal Article10.1002/JCTB.5953
Thiamethoxam removal by Fenton and biological oxidation
Esther Gomez-Herrero,Hafida Lebik-Elhadi,Hafida Lebik-Elhadi,Hamid Aït-Amar,Montserrat Tobajas,Juan J. Rodriguez,Angel F. Mohedano +6 more
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TL;DR: Combining Fenton's reagent with biological oxidation circumvents the shortcomings of Fenton technology, facilitating the biodegradation of the resulting effluents in a sequencing batch reactor (SBR).
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Abstract: BACKGROUND: Thiamethoxam (TMX) is a potential insecticide pollutant of hydric resources that must be removed. Advanced oxidation processes (AOPs) are usually effective, but expensive to implement. Combining Fenton's reagent with biological oxidation circumvents the shortcomings of Fenton technology, facilitating the biodegradation of the resulting effluents in a sequencing batch reactor (SBR). RESULTS: Fenton‐like oxidation of TMX with variable hydrogen peroxide (H₂O₂) doses afforded total organic carbon (TOC) conversion and chemical oxygen demand (COD) removal by (respectively) 40% and 80% from pure TMX, and 40% and 60% from commercial TMX. The effluents from Fenton oxidation using substoichiometric H₂O₂ doses were less ecotoxic and more biodegradable than the initial solution and, therefore, susceptible to a biological treatment. Biological oxidation of effluents obtained from 50% and 75% H₂O₂ doses was accomplished for different organic loads in 6‐h cycles. Coupling Fenton and biological oxidation of TMX afforded TOC conversion and COD removal of 80% for the effluent obtained with a 75% H₂O₂ dose. CONCLUSIONS: Coupling Fenton–biological oxidation efficiently reduces the amounts of H₂O₂ needed and produces biodegradable effluents. In addition, the biological treatment increases COD and TOC removal by ≤80% for the overall treatment. © 2019 Society of Chemical Industry
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References
Combination of Advanced Oxidation Processes and biological treatments for wastewater decontamination—A review
TL;DR: The main conclusions arrived at from the overall assessment of the literature are that more work needs to be done on degradation kinetics and reactor modeling of the combined process, and also dynamics of the initial attack on primary contaminants and intermediate species generation.
2.3K
Neonicotinoid contamination of global surface waters and associated risk to aquatic invertebrates: A review
Christy A. Morrissey,Pierre Mineau,James H. Devries,Francisco Sánchez-Bayo,Matthias Liess,Michael C. Cavallaro,Karsten Liber +6 more
TL;DR: It appears that environmentally relevant concentrations of neonicotinoids in surface waters worldwide are well within the range where both short- and long-term impacts on aquatic invertebrate species are possible over broad spatial scales.
1.1K
Applied aspects of neonicotinoid uses in crop protection.
TL;DR: New formulations have been developed to optimize the bioavailability of neonicotinoids through improved rain fastness, better retention and spreading of the spray deposit on the leaf surface, combined with higher leaf penetration, which will turn neonic nicotine into the most important chemical class in crop protection within the next few years.
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