Chemical Oxygen Demand Reduction Of Various Wastewater Types Using Magnetic Field‐assisted Fenton Reaction

Krzemieniewski, M.; Dębowski, Marcin; Dobrzynska, A.; Zieliński, Marcin

doi:10.2175/106143004x141889

Cited by 22 publications

(9 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A MF is a force field analogous to gravitational and electrical fields; in other words, surrounding a source of potential, there is a contoured sphere of effect or field (Krzemieniewski et al, 2004;Xu et al, 2010). In the case of gravitation, the source of potential is a mass.…”

Section: Mfsmentioning

confidence: 99%

Magnetic field generation in the water treatment perspectives: An overview

Ghernaout

2018

Int. j. adv. appl. sci.

View full text Add to dashboard Cite

In the last few decades, many researches on the effects of magnetic field (MF) on water have been reported; however, still many arguments and doubts are present. This review aims to focus on the basic properties implied in magnetic phenomena generation at the atomic and electronic level of matter. Fundamentals of magnetism and origin of magnetic effect will be discussed. Both paramagnetism and diamagnetism are very crucial in the examination of atomic and molecular structure; however, these effects are very weak and have no real practical importance. Large scale magnetic effects resulting in commercially important materials appear in atoms and ions of only a few metallic elements notably Fe, Co, Ni, and some of the rare earths. In alloys or oxides of some materials containing these elements and some neighboring ions such as Mn, there is a crucial improvement of the atomic spin effect. This enhancement comes about from the cooperative interaction of large numbers (10 13 -10 14 ) of these atomic spins producing a region where all atomic spins within it are aligned parallel (positive exchange interaction). These materials are called ferromagnetic. In spite of the achieved performances on MF technologies, there is a huge work to be performed for better understanding and controlling of magnetic water treatment.

show abstract

Section: Mfsmentioning

confidence: 99%

Magnetic field generation in the water treatment perspectives: An overview

Ghernaout

2018

Int. j. adv. appl. sci.

View full text Add to dashboard Cite

show abstract

“…Dilution of 50 times or more with drinking water has been a common practice before discharging these wastewaters into the sewage system, which is not a sustainable strategy for the 21st century. The treatment of wastewaters from the timber industry using chemical methods has shown limited efficiency [3]. The use of biological treatment [1] and sorption/filtration processes [2] has also shown limitations when the main purpose is to comply with established standards for discharges into recipient water bodies.…”

Section: Introductionmentioning

confidence: 99%

Photo-Fenton and Fenton Oxidation of Recalcitrant Industrial Wastewater Using Nanoscale Zero-Valent Iron

Hansson

Kaczala

Marques

et al. 2012

International Journal of Photoenergy

View full text Add to dashboard Cite

There is a need for the development of on-site wastewater treatment technologies suitable for “dry-process industries,” such as the wood-floor sector. Due to the nature of their activities, these industries generate lower volumes of highly polluted wastewaters after cleaning activities. Advanced oxidation processes such as Fenton and photo-Fenton, are potentially feasible options for treatment of these wastewaters. One of the disadvantages of the Fenton process is the formation of large amounts of ferrous iron sludge, a constraint that might be overcome with the use of nanoscale zero-valent iron (nZVI) powder. Wastewater from a wood-floor industry with initial COD of 4956 mg/L and TOC of 2730 mg/L was treated with dark-Fenton (nZVI/H2O2) and photo-Fenton (nZVI/H2O2/UV) applying a 2-level full-factorial experimental design. The highest removal of COD and TOC (80% and 60%, resp.) was achieved using photo-Fenton. The supply of the reactants in more than one dose during the reaction time had significant and positive effects on the treatment efficiency. According to the results, Fenton and mostly photo-Fenton are promising treatment options for these highly recalcitrant wastewaters. Future investigations should focus on optimizing treatment processes and assessing toxic effects that residual pollutants and the nZVI might have. The feasibility of combining advanced oxidation processes with biological treatment is also recommended.

show abstract

“…MF can also influence the lifetime of radicals by inhibiting their recombination reactions through the interaction with electron spins [21]. Krzemieniewski et al found that MF enhances the Fenton process [22,23]. Hao et al reported as well that MF accelerates the decomposition rate of H 2 O 2 and the conversion rate of Fe 2+ in Fenton reaction [24].…”

Section: Introductionmentioning

confidence: 99%