Remediation of washing machine wastewater by photo-enhanced persulfate/hematite process
作者： Masoumeh Khatebasreh , Rahil Kiani , Elham Minaee Tabrizi , Gelavizh Barzegar , Zohreh Bahmani
DOI: 10.1007/S40710-020-00440-9
关键词:
摘要: Hematite nanoparticles (Fe2O3, HNPs) were synthesized to be used in washing machine wastewater treatment as a complex matrix. In order activate persulfate (PS), HNPs and Ultraviolet-C (UVC) radiation generate sulfate radicals due photocatalytic activity of higher energy input UVC. The effect operational parameters such pH, catalyst dose, PS concentration reaction time was investigated. results showed that PS/UV/HNPs could remove organic pollutants from wastewater. Based on the results, process can effectively chemical oxygen demand (COD) (77.5%) total carbon (TOC) (65.9%) at optimal conditions (pH = 7, PS = 8 mM, =1.0 g/L) within 150 min. COD TOC removals followed pseudo-first-order kinetic model with rate constants 0.0109 0.0074 min−1, respectively. Reusability experiments revealed keep its performance for three-time use. electrical also calculated: 158.7 kWh/m3 is required reach 77.5% removal. achieved it concluded an effective
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