Degradation of a textile reactive Azo dye by a combined chemical–biological process: Fenton's reagent-yeast

Lucas, Marco S.; Dias, Albino A.; Sampaio, Ana; Amaral, Carla; Peres, José A.

doi:10.1016/j.watres.2006.12.013

Cited by 169 publications

(75 citation statements)

References 25 publications

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“…Thus, they are future promising materials for photocatalytic degradation of organic pollutants. It has been reported that addition of H 2 O 2 to dye solution in the presence of such catalysts can enhance the degradation capacity (Lucas et al 2007). The mixture of H 2 O 2 and ferrous sulfate produce hydroxyl radicals.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation and photo-Fenton oxidation of Congo red dye pollutants in water using natural chromite—response surface optimization

Abukhadra

Ibrahim

et al. 2017

Appl Water Sci

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Refined natural Fe-chromite was characterized by XRD, FT-IR, reflected polarized microscope, XRF and UV spectrophotometer. Photocatalytic degradation and photo-Fenton oxidation of Congo red dye by Fe-chromite was investigated using 1 mL H 2 O 2 . The degradation of dye was studied as a function of illumination time, chromite mass, initial dye concentration, and pH. Fe-chromite acts as binary oxide system from chromium oxide and ferrous oxide. Thus, it exhibits photocatalytic properties under UV illumination and photo-Fenton oxidation after addition of H 2 O 2 . The degradation in the presence of H 2 O 2 reached the equilibrium stage after 8 h (59.4%) but in the absence of H 2 O 2 continued to 12 h (54.6%). Photocatalytic degradation results fitted well with zero, first order and second order kinetic model but it represented by second order rather than by the other models. While the photo-Fenton oxidation show medium fitting with the second order kinetic model only. The values of kinetic rate constants for the photo-Fenton oxidation were greater than those for the photocatalytic degradation. Thus, degradation of Congo red dye using chromite as catalyst is more efficient by photo-Fenton oxidation. Based on the response surface analysis, the predicted optimal conditions for maximum removal of Congo red dye by photocatalytic degradation (100%) were 12 mg/l, 0.14 g, 3, and 11 h for dye concentration, chromite mass, pH, and illumination time, respectively. Moreover, the optimum condition for photoFenton oxidation of dye (100%) is 13.5 mg/l, 0.10 g, 4, and 10 h, respectively.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation and photo-Fenton oxidation of Congo red dye pollutants in water using natural chromite—response surface optimization

Abukhadra

Ibrahim

et al. 2017

Appl Water Sci

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“…Here, the ratios are based on mass (molar) and it was reported in many of the researchers (Bach et al 2010;Hasan et al 2012). It was proved that, the Fenton's oxidation shows better results in acidic pH from 2 to 5 (Xu et al 2004;Saber et al 2014) and 3-4 (Lucas et al 2007;Manu and Mahamood 2011). Hence, the pH values were considered as 2, 3.5 and 5.…”

Section: Experimental Designmentioning

confidence: 95%

Optimization of Fenton’s oxidation of herbicide dicamba in water using response surface methodology

Sangami

Basavaraju

2017

Appl Water Sci

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In this study Fenton's oxidation of dicamba in aqueous medium was investigated by using the response surface methodology. dosage of 11.38 and 0.33 mM respectively. The whole oxidation process was monitored by high performance liquid chromatography (HPLC) along with liquid chromatography/mass spectrometry (LC/MS). It was found that 82% of dicamba was mineralized to oxalic acid, chloride ion, CO 2 and H 2 O, which was confirmed with COD removal of 81.53%. The regression analysis was performed, in which standard deviation (\4%), coefficient of variation (\8), F value (Fisher's Test) ([2.74), coefficient of correlation (R 2 = R 2 adj ) and adequate precision ([12) were in good agreement with model values. Finally, the treatment process was validated by performing the additional experiments.

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“…The COD and color removal efficiencies of 40-85 and 39-81 % were reported, respectively, in real and artificially colored wastewaters at a total hydraulic retention time (HRT) of 5.75 days. The combination of physicochemical and biological treatment processes was also considered (Sudarjanto et al 2006;Lucas et al 2007;Lotito et al 2014), but it was still not easy to meet the discharge limit for color. Zou (2015) recently developed a hybrid method combining ozonation, activated carbon, and biological aerated filter (BAF) for the advanced treatment of dyeing wastewater for reuse, despite the high cost for ozonation.…”

Section: Introductionmentioning

confidence: 99%

Enhanced bioremoval of refractory compounds from dyeing wastewater using optimized sequential anaerobic/aerobic process

Bae

Han

Kim

et al. 2016

Int. J. Environ. Sci. Technol.

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The upflow anaerobic sludge blanket process followed by the biological aerated filter process was employed to improve the removal of color and recalcitrant compounds from real dyeing wastewater. The highest removal efficiency for color was observed in the anaerobic process, at 8-h hydraulic retention time, seeded with the sludge granule. In the subsequent aerobic process packed with the microbe-immobilized polyethylene glycol media, the removal efficiency for chemical oxygen demand increased significantly to 75 %, regardless of the empty bed contact time. The average influent non-biodegradable soluble chemical oxygen demand was 517 mg/L, and the average concentration in effluent from the anaerobic reactor was 363 mg/L, suggesting the removal of some recalcitrant matters together with the degradable ones. The average nonbiodegradable soluble chemical oxygen demand in effluent from the aerobic reactor was 87, 93, and 118 mg/L, with the removal efficiency of 76, 74, and 67 %, at 24-, 12-, and 8-h empty bed contact time, respectively. The combined anaerobic sludge blanket and aerobic cell-entrapped process was effective to remove the refractory compounds from real dyeing wastewater as well as in reducing organic loading to meet the effluent discharge limits. This integrated process is considered an effective and economical treatment technology for dyeing wastewater.

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Degradation of a textile reactive Azo dye by a combined chemical–biological process: Fenton's reagent-yeast

Cited by 169 publications

References 25 publications

Photocatalytic degradation and photo-Fenton oxidation of Congo red dye pollutants in water using natural chromite—response surface optimization

Photocatalytic degradation and photo-Fenton oxidation of Congo red dye pollutants in water using natural chromite—response surface optimization

Optimization of Fenton’s oxidation of herbicide dicamba in water using response surface methodology

Enhanced bioremoval of refractory compounds from dyeing wastewater using optimized sequential anaerobic/aerobic process

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