Optimization of Fenton-based treatment of petroleum refinery wastewater with scrap iron using response surface methodology

Saber, Ali; Hasheminejad, Hasti; Taebi, Amir; Ghaffari, Ghasem

doi:10.1007/s13201-013-0144-8

Cited by 38 publications

(12 citation statements)

References 26 publications

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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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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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“…A petrochemical residue with 450 mg L -1 of initial COD presented approximately 80% of COD removed by Fenton process. 42 Kakavandi and Babaei 43 found satisfactory COD removal for a petrochemical residue (initial COD range 50-1000 mg L -1 ) with the heterogeneous Fenton process. However, as shown in Figure 6, Fenton and photo-Fenton processes did not show satisfactory results.…”

Section: Degradation Of the Raw Liquid Residuementioning

confidence: 98%

“…The presented results showed that Fenton is a promising process to the treatment of petrochemical residue. However, considering the toxicity of the final treated residue, the association of Fenton with another treatment such as post-coagulation is worth testing, as discussed in the work of Saber et al 42…”

Section: Degradation Of the Raw Liquid Residuementioning

confidence: 99%

Advanced Oxidation Processes to the Remediation of Liquid Residue from the Thermal Treatment of Oily Sludge

Costa¹,

Althoff²,

Schneider³

et al. 2019

J. Braz. Chem. Soc.

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This work reports the remediation of a liquid residue derived from the thermal treatment of petrochemical residues by advanced oxidation processes. Firstly, degradation studies of phenol aqueous solutions by heterogeneous photocatalysis, Fenton, and photo-Fenton were conducted. Fenton processes showed a higher efficiency, mainly in the UVA photo-assisted mode (94% in 3 min), and henceforward it was chosen for the remediation of the residue. However, the high organic load of the raw residue (6,000 mg L-1 of chemical oxygen demand (COD)) limited the efficiency of the Fenton processes. Hence, the raw liquid residue was diluted with the scrubber residue, produced during the thermal treatment of the petrochemical residues, reducing the COD to values close to 2,000 mg L-1. The photo-Fenton treatment allowed the removal of approximately 95% of the COD load, decreasing the residual concentration of phenolic compounds from 213 to 0.5 mg L-1. At the same time, the concentration of BTEXs (benzene, toluene, ethylbenzene and xylene) were reduced to values lower than the limit of quantification (LOQ) of the chromatographic technique. Therefore, the photo-Fenton process is an efficient alternative to the remediation of residues with high complexity and with high COD values, like the ones obtained in the petrochemical industry.

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“…Nonetheless, high concentrations of Fe 2+ ion can only increase the rate of the reaction up to a certain limit. Exceeding the optimum concentration, the rate of degradation becomes less significant due to the scavenged radicals by Fe 2+ [43]. In addition, it can also inhibit the degradation process because Fe 2+ ions may compete with the organic pollutants to react with the •OH radicals (Eq.…”

Section: Effect Of Fe 2+mentioning

confidence: 99%

Removal of chemical oxygen demand from agro effluent by ZnO photocatalysis and photo-Fenton

2019

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The direct discharge of improperly treated effluent from sago industry poses a great threat to water bodies due to the high amount of organic matter. This work investigated ZnO photocatalytic degradation under aerated and non-aerated conditions, and photo-Fenton aiming to reduce the chemical oxygen demand in sago effluent. Photolysis of sago effluent in the presence of ultraviolet irradiation and aeration resulted in 68% of the chemical oxygen demand removal. The results indicate high chemical oxygen demand reductions for different concentrations of sago effluent at 1:10, 1:100, and 1:1000 diluted with distilled water following the ZnO photocatalytic treatment under the aerated conditions. The chemical oxygen demand reductions of 90-95% and 85% were obtained using 3 g/L of ZnO, after 2 h of aerated and nonaerated photocatalytic treatments, respectively, for the sago effluent ratio of 1:1000. On the other hand, the combination of the most concentrated sago effluent at 1:10 and non-aerated ZnO photocatalytic treatment resulted in no appreciable chemical oxygen demand reduction at only 8%. The concentrations of Fe 2+ (10-60 mM) and H 2 O 2 (50-150 mM) greatly influenced the degradation rates of chemical oxygen demand. The optimum parameters of 10 mM of Fe 2+ and 50 mM of H 2 O 2 were able to reduce 97% of the chemical oxygen demand of the 1:1000 sago effluent under the photo-Fenton treatment with 2 h of ultraviolet irradiation. Thus, both ZnO photocatalysis and photo-Fenton can be applied as the possible treatment methods to reduce the chemical oxygen demand in effluent from sago processing.

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Optimization of Fenton-based treatment of petroleum refinery wastewater with scrap iron using response surface methodology

Cited by 38 publications

References 26 publications

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

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

Advanced Oxidation Processes to the Remediation of Liquid Residue from the Thermal Treatment of Oily Sludge

Removal of chemical oxygen demand from agro effluent by ZnO photocatalysis and photo-Fenton

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