Humic acid degradation in aqueous solution by the photo-Fenton process

“…Moreover, the inorganic reactions involved in Fenton-mediated oxidation are now well established (Table 1; Zahorodna et al 2007;Villa et al 2008;Laine and Cheng 2009). Nowadays, FP has been used for treatment of a variety of wastewater and soil containing aromatic amines, phenols, dyes, pesticides, toxic, and biologically refractory organics (Grymonpré et al 2001;Sajiki and Yonekubo 2004;Catalkaya and Kargi 2007;Katsumata et al 2008), but scarcely in hazardous solid waste. With respect to the high oxidation power of ·OH in FP, both organic and inorganic compounds can be oxidized.…”

Section: Introductionmentioning

confidence: 99%

A New Hazardous Solid Waste Detoxication Method: Semi-solid Fenton Process (SSFP)

Feng

et al. 2010

Water Air Soil Pollut

View full text Add to dashboard Cite

Semi-solid Fenton process (SSFP) was firstly conducted on hazardous solid waste detoxication. Batch tests, Box-Behnken designs, and response surface methodology were applied to optimize the key factors including the pH, the initial Fe(II) content, and the liquid-to-solid ratio (L/S). It shows that the optimal pH, the initial Fe(II) content, and the L/S in SSFP are 3.5, 0.062 mol kg −1 dry weight and 1.77, respectively. Correspondingly, the removal efficiencies of ONA and ArNH 2 are 98.5±0.5% and 100% which agree well with the results of an established polynomial model. It suggests that SSFP is an efficient and environmentfriendly method for hazardous solid waste detoxication without wastewater generation.

show abstract

“…These substances have been reported to affect the appearance and taste of the water [2]. Moreover, they could react with chlorine via a combination of substitution and oxidation mechanisms [3] to form potentially carcinogenic organic compounds [4] when water was treated with chlorine for sterilization, and this has become a problem in drinking water treatment.…”

Section: Introductionmentioning

confidence: 99%

Degradation characteristics of humic acid over iron oxides/Fe0 core–shell nanoparticles with UVA/H2O2

Nie

Zhou

et al. 2010

Journal of Hazardous Materials

View full text Add to dashboard Cite

a b s t r a c tIron oxides coated on Fe 0 core-shell nanospheres (nIOCI) were synthesized through the reduction of ferrous sulfate aqueous solution by sodium borohydride at ambient atmosphere. The catalyst was highly effective for the degradation of humic acid (HA) in the presence of H 2 O 2 and UVA at neutral pH. Under deoxygenated conditions in the dark, the generation of hydroxyl radicals in aqueous nIOCI dispersion verified its galvanic cell-like performance, which enhanced the interfacial electron transfer and led to its higher reactivity. By the total organic carbon, the absorbance of UV 254 , FTIR, the molecular weight distribution and the chemical fractional character analysis, the degradation process of HA was shown to proceed by the disappearance of aromaticity, the increase of hydrophilic fraction and aromatic ring openings into CO 2 and small organic acid. The treated HA showed much lower reactivity toward chlorine and the disinfection byproduct (DBP) formation potential was also greatly reduced. Moreover, it was found that the DBP formation potential more depended on the structure of the intermediates of HA degradation than TOC removal.Crown

show abstract

Humic acid degradation in aqueous solution by the photo-Fenton process

Cited by 80 publications

References 28 publications

Degradation of marine humic acids by ozone-initiated radical reactions

Degradation of marine humic acids by ozone-initiated radical reactions

A New Hazardous Solid Waste Detoxication Method: Semi-solid Fenton Process (SSFP)

Degradation characteristics of humic acid over iron oxides/Fe0 core–shell nanoparticles with UVA/H2O2

Contact Info

Product

Resources

About