نتایج جستجو برای: fenton like process

تعداد نتایج: 1870329  

Journal: :npj Materials degradation 2021

Abstract Fenton or Fenton-like oxidation for treatment of organic radioactive wastes is a promising technology with applications to range wastes. This review details this process; exploring potential challenges, pitfalls and opportunities industrial usage The application process real within pilot-plant settings has been documented, key findings critically assessed in the context future waste pr...

2007
Josef Prousek

Various aspects of the participation of Fenton chemistry in biology and medicine are reviewed. Accumulated evidence shows that both hydroxyl radical and ferryl [Fe(IV)=O]2+ can be formed under a variety of Fenton and Fenton-like reactions. Some examples of metal-independent hydroxyl radical production are included. Extracellular Fenton reaction is illustrated by the white rot and brown rot wood...

2009
Chihhao Fan Ming - Chu Liao

The purpose of this study is to investigate the chemical degradation of the organophosphorus pesticide of parathion and carbamate insecticide of methomyl in the aqueous phase through Fenton process. With the employment of batch Fenton process, the degradation of the two selected pesticides at different pH, initial concentration, humic acid concentration, and Fenton reagent dosages was explored....

2016
Jiangshan Ma Keke Zhang Mei Huang Stanton B Hector Bin Liu Chunyi Tong Qian Liu Jiarui Zeng Yan Gao Ting Xu Ying Liu Xuanming Liu Yonghua Zhu

BACKGROUND Lignocellulolytic bacteria have revealed to be a promising source for biofuel production, yet the underlying mechanisms are still worth exploring. Our previous study inferred that the highly efficient lignocellulose degradation by bacterium Pantoea ananatis Sd-1 might involve Fenton chemistry (Fe2+ + H2O2 + H+ → Fe3+ + OH· + H2O), similar to that of white-rot and brown-rot fungi. The...

Journal: :International journal of environmental research and public health 2015
Liang Sun Yan Li Aimin Li

Wastewater from chemical plants has remarkable antibiotic effects on the microorganisms in traditional biological treatment processes. An enhanced Fenton system catalyzed by natural pyrite was developed to degrade this kind of wastewater. Approximately 30% chemical oxygen demand (COD) was removed within 120 min when 50 mmol/L H₂O₂ and 10 g/L natural pyrite were used at initial pH from 1.8 to 7....

2005
K. Barbusiński

A novel modified Fenton process using heterogeneous catalyst (swarf) was developed to catalyze the oxidation reaction of azo dye Acid Red 18. It was found that swarf could be used to replace iron salts as a catalyst for the Fenton reaction. The examined continuous Fenton process proved to be very efficient for decolorization of simulated wastewater containing 100 mg/dm3 Acid Red 18. Performance...

Journal: :Catalysts 2021

The present paper investigates the potential of Galvano-Fenton process as an advanced technique in terms simultaneous oxidation a model pollutant, phenol, and energy release saving compared to conventional electrochemical techniques, namely, Fenton, Fenton-like, Electro-Fenton. A numerical describing electrochemical, electrolytic, phenol’s mineralization reactions is presented. Simulations are ...

2014
Milena Becelic-Tomin Bozo Dalmacija Ljiljana Rajic Dragana Tomasevic Djurdja Kerkez Malcolm Watson Miljana Prica

Pyrite ash (PA) is created by burning pyrite in the chemical production of sulphuric acid. The high concentration of iron oxide, mostly hematite, present in pyrite ash, gives the basis for its application as a source of catalytic iron in a modified Fenton process for anthraquinone dye reactive blue 4 (RB4) degradation. The effect of various operating variables such as catalyst and oxidant conce...

Journal: :محیط شناسی 0
گاگیک بدلیانس قلی کندی دانشیار مهندسی محیط زیست ،آب و فاضلاب، دانشگاه شهید بهشتی، پردیس فنی مهندسی شهید عباسپور حمیدرضا مسیحی کارشناس ارشد مهندسی عمران، آب و فاضلاب، دانشگاه شهید بهشتی، پردیس فنی مهندسی شهید عباسپور مریم میرابی استادیار مهندسی محیط زیست ، آب و فاضلاب، دانشگاه شهید بهشتی، پردیس فنی مهندسی شهیدعباسپور

introduction             wastewater treatment using activated sludge process (asp) produces huge amounts of sludge that must be treated by efficient methods. wastewater sludge handling is one of the most important economic-technical challenges of wastewater treatment projects. conventional methods for this purpose are very time consuming, expensive and in lots of cases have limited success. in ...

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