Abstract
The objective of this study was to investigate the performance of employing solar photo-Fenton to treat petroleum wastewater from Sohar oil refinery, evaluate this process by a central composite design with response surface methodology and evaluate the relationship among operating variables such as pH, H2O2 dosage, Fe+2 dosage, and reaction time to identify the optimum operating conditions. Quadratic models proved to be significant with very low probabilities (<0.0001) for the following responses: total organic carbon (TOC) and chemical oxygen demand (COD). The optimum conditions were H2O2 dosage (850 mg L−1), Fe+2 dosage (60 mg L−1), pH (3.68) and reaction time (127 min) in this method. The experimental results of the maximum TOC and COD removal rates corresponded good with the predictions, which were 59.3 and 74.7 %, respectively. This method achieved well degradation efficiencies for TOC and COD and reduced the treatment time comparing with the previous work.
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Aljuboury, D.A., Palaniandy, P., Aziz, H.B.A. et al. Evaluation of the solar photo-Fenton process to treat the petroleum wastewater by response surface methodology (RSM). Environ Earth Sci 75, 333 (2016). https://doi.org/10.1007/s12665-015-5192-y
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DOI: https://doi.org/10.1007/s12665-015-5192-y