Effects of water matrices on the degradation of naproxen by reactive radicals in the UV/peracetic acid process

Chen, Siao; Cai, Meiquan; Liu, Yongze; Zhang, Liqiu; Feng, Li

doi:10.1016/j.watres.2018.11.044

Cited by 268 publications

(113 citation statements)

References 22 publications

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“…So, for the NAP-SW sample, the pH in the reaction medium decreased from 5 (initial pH) to 3.98; for NAP-HW, the pH increased 1.5 units, and it was maintained constant (5.5) in the case of the NAP-WWTP matrix. From those results, it could be suggested that the effect matrix is playing a main role in the CWPO process of NAP [46].…”

Section: Catalytic Wet Peroxide Oxidation In Different Real-aqueous Mmentioning

confidence: 92%

Optimization Parameters, Kinetics, and Mechanism of Naproxen Removal by Catalytic Wet Peroxide Oxidation with a Hybrid Iron-Based Magnetic Catalyst

et al. 2019

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This work presents a study of the assessment of the operating parameters of the catalytic wet peroxide oxidation (CWPO) of naproxen (NAP) using magnetite/multi-walled carbon nanotubes (Fe3O4/MWCNTs) as a catalyst. The effect of pH, temperature, and H2O2 dosage on CWPO process was evaluated by using the response surface model (RSM), allowing us to obtain an optimum NAP removal of 82% at the following operating conditions: pH = 5, T = 70 °C, [H2O2]0 = 1.5 mM, and [NAP]0 = 10.0 mg/L. Therefore, NAP degradation kinetics were revealed to follow a pseudo-second-order kinetic model, and an activation energy value of 4.75 kJ/mol was determined. Adsorption and using only H2O2 experiments, both considered as blank tests, showed no significant removal of the pollutant. Moreover, Fe3O4/MWCNTs material exhibited good recyclability along three consecutive cycles, finding an average NAP removal percentage close to 80% in each cycle of 3 h reaction time. In addition, the scavenging tests confirmed that the degradation of NAP was mainly governed by •OH radicals attack. Two reaction sequences were proposed for the degradation mechanism according to the detected byproducts. Finally, the versatility of the catalyst was evidenced in the treatment of different environmentally relevant aqueous matrices (wastewater treatment plant effluent (WWTP), surface water (SW), and a hospital wastewater (HW)) spiked with NAP, obtaining total organic carbon (TOC) removal efficiencies after 8 h in the following order: NAP-SW > NAP-HW > NAP-WWTP.

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Section: Catalytic Wet Peroxide Oxidation In Different Real-aqueous Mmentioning

confidence: 92%

Optimization Parameters, Kinetics, and Mechanism of Naproxen Removal by Catalytic Wet Peroxide Oxidation with a Hybrid Iron-Based Magnetic Catalyst

et al. 2019

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“…slowing down BPA and organic matter oxidation reactions according to Chen et al. [ 49 ] It was previously reported that 5 m m of Cl − ions had no effect on Acid Orange 7 removal with PC/US/UVC‐LEDs treatment, no effect on Rhodamine B removal with PS/MW‐UV treatment and only a minor negative effect on naproxen removal at a concentration of 30 m m with PAA/UV treatment. [ 24,31,49 ]…”

Section: Resultsmentioning

confidence: 99%

“…[ 28 ] Despite the high potential of using PAA and PC as alternative peroxides to HP or PS in water and wastewater treatment, studies devoted to their activation and use for water/wastewater treatment is still rather limited and worth investigation. [ 24,30,32,49,50 ]…”

Section: Introductionmentioning

confidence: 99%

UV‐C Activation of Peroxides for Bisphenol A Removal from a Real Water Sample

Öztürk

Ucun

Arslan-Alaton

2021

CLEAN Soil Air Water

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The peroxides peracetic acid (PAA) and percarbonate (PC) are applied for UV‐C‐based advanced oxidation of the endocrine disrupting micropollutant bisphenol A (BPA; 2 mg L−1 = 8.76 µm) in pure and tap water. Their performance is compared with the more conventional hydrogen peroxide (HP)‐ and persulfate (PS)‐activated UV‐C treatments. Acidic and neutral pH values, 4 and 7, result in faster BPA removals with HP‐ and PS‐activated UV‐C treatments, respectively, whereas higher BPA removal rates are obtained at acidic and alkaline pH values, 4 and 10, with the PC/UV‐C and PAA/UV‐C treatments, respectively. Increasing the peroxide concentrations enhances BPA removals with the exception of PC/UV‐C treatment where an asymptotic removal rate is ultimately reached due to the inhibitory effect of increasing alkalinity. The order of total organic carbon (TOC) removal for the BPA‐spiked tap water (TW) (TOC ≈ 5 mg L−1 with added BPA) is TOCPAA/UV‐C (16%) < TOCPS/UV‐C (24%) < TOCHP/UV‐C (27%) < TOCPC/UV‐C (35%). BPA removal is most negatively affected for the HP/UV‐C processes, whereas the PC/UV‐C process outperformed the other peroxide/UV‐C treatments in terms of TOC removal due to the differences in the reactivity/selectivity of the in situ formed free radical types that may become important when working with real water. The originally low toxicity toward the marine photobacterium Vibrio fischeri and the freshwater crustacean Daphnia magna fluctuated during photochemical treatments.

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“…Recently, an emerging AOP mainly based on the organic radicals (R-O • ) has become an attractive alternative for organic contaminant degradation in wastewater treatment. Organic radicals are commonly generated from the activation of peroxide bond in the organic peroxy acid, such as peracetic acid (PAA, CH 3 C(O)OOH) [16,17]. PAA is known as a broad-spectrum antimicrobial agent and has been widely used as an alternative to conventional chlorine disinfectants in wastewater disinfection, owing to the advantages of PAA, such as strong oxidation power (redox potential ranging from 1.06 to 1.96 V) [18] and a low potential of harmful disinfection byproduct generation [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Activation of Peracetic Acid with Lanthanum Cobaltite Perovskite for Sulfamethoxazole Degradation under a Neutral pH: The Contribution of Organic Radicals

Zhou

Zhang

et al. 2020

Molecules

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Advanced oxidation processes (AOPs) are effective ways to degrade refractory organic contaminants, relying on the generation of inorganic radicals (e.g., •OH and SO4•−). Herein, a novel AOP with organic radicals (R-O•) was reported to degrade contaminants. Lanthanum cobaltite perovskite (LaCoO3) was used to activate peracetic acid (PAA) for organic radical generation to degrade sulfamethoxazole (SMX). The results show that LaCoO3 exhibited an excellent performance on PAA activation and SMX degradation at neutral pH, with low cobalt leaching. Meanwhile, LaCoO3 also showed an excellent reusability during PAA activation. In-depth investigation confirmed CH3C(O)O• and CH3C(O)OO• as the key reactive species for SMX degradation in LaCoO3/PAA system. The presence of Cl− (1–100 mM) slightly inhibited the degradation of SMX in the LaCoO3/PAA system, whereas the addition of HCO3− (0.1–1 mM) and humic aid (1–10 mg/L) could significantly inhibit SMX degradation. This work highlights the generation of organic radicals via the heterogeneous activation of PAA and thus provides a promising way to destruct contaminants in wastewater treatment.

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Effects of water matrices on the degradation of naproxen by reactive radicals in the UV/peracetic acid process

Cited by 268 publications

References 22 publications

Optimization Parameters, Kinetics, and Mechanism of Naproxen Removal by Catalytic Wet Peroxide Oxidation with a Hybrid Iron-Based Magnetic Catalyst

Optimization Parameters, Kinetics, and Mechanism of Naproxen Removal by Catalytic Wet Peroxide Oxidation with a Hybrid Iron-Based Magnetic Catalyst

UV‐C Activation of Peroxides for Bisphenol A Removal from a Real Water Sample

Activation of Peracetic Acid with Lanthanum Cobaltite Perovskite for Sulfamethoxazole Degradation under a Neutral pH: The Contribution of Organic Radicals

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