Comparison of advanced oxidation processes in flow-through pilot plants (Part I)

Abstract

The advanced oxidation processes (AOPs) UV/H2O2, UV/O3 and O3/H2O2 were optimised to achieve a 90% degradation of the micropollutant atrazine in continuous-flow reactors. The experiments were performed with spiked Berlin tap-water. The comparison of mechanistically different oxidation systems needs a non-specific figure-of-merit to avoid influences by system-inherent parameters. The chosen figure-of-merit consists of the electrical energy per order of magnitude in oxidation per m3, EE/o. The combination O3/H2O2 proved to be the most efficient process by means of energy consumption.

Characterization of hydraulic fracturing flowback water in Colorado: Implications for water treatment

“…O 3 / H 2 O 2 experiments were carried out in a semi-batch 1 L ozone reactor, with ozone gas continually sparged into the flowback solution, to achieve an ozone dose of up to 1 mg O 3 /mg DOC (in the upper range of wastewater application; Zimmermann et al, 2011). Hydrogen peroxide was added at 350 mg/L, to obtain O 3 /H 2 O 2 w/w ratio of 1.4 (typical for O 3 /H 2 O 2 ; Müller and Jekel, 2001). Experiments combining solar light and chlorine were carried out in a 1000 W Xe lamp solar simulator (Model Sol1A, Oriel Instruments, Stratford, CT), using up to 80 mM NaOCl (Chan et al, 2012) and irradiation time up to 24 h. The same solar simulator and exposure times were used during photo-Fenton experiments, by adjusting the pH of the flowback water to 3 and adding H 2 O 2 at 500 mg/L (using indigenous iron (ca.…”

Setup and Energetic Considerations for Three Advanced Oxidation Reactors Treating Organic Compounds

“…Additionally, values reported in literature were partially used as a lower threshold [19]. The total calculation of E EO is presented for the photo-Fenton reaction in Tab.…”

Wet hydrogen peroxide catalytic oxidation (WHPCO) of organic waste in agro-food and industrial streams

“…There are several manuscripts in the literature which have compared pro/cons of AOPs methods, for example in the degradation of chlorophenols [42], landfill leachate [30], remediation of underground contaminated water [43], destruction of 2,4-dinitrophenol [44] and atrazine [45], for reactive dye wastewater [36,46], industrial wastewater cleaning from cyanides [47], treatment of olive oil milling wastewater [48a] and other industrial waste water streams [48b]. However, no clear indication can be derived about the comparison of WACO and WHPCO methods.…”