Catalytic performance of wrapped CoO by MgO in oxidative degradation of chloroquine phosphate with peroxymonosulfate

Dan, Jiabin; Rao, Pinhua; Wang, Qiongfang; Zhang, Min; He, Zedi; Zhang, Wenqi; Gao, Naiyun; Deng, Jing; Chen, Juxiang

doi:10.1016/j.apsusc.2021.151430

Cited by 32 publications

(4 citation statements)

References 54 publications

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“…S3). The degradation of parent CQP ( m / z = 320.19) mainly proceeded from the substituents of the side chain, in which there are two primary pathways for CQP degradation [ 50 , 51 ]. Specifically, under the action of active species (·O 2 − and ·OH), CQP could first disconnect the carbon nitrogen bond on the side chain to form B ( m / z : 179.04), C ( m / z : 181.03) and D ( m / z : 124.04), respectively.…”

Section: Resultsmentioning

confidence: 99%

Performance of high temperature phase-stable high entropy oxide (MgCuMnCoFe)Ox in catalytic wet air oxidation of chloroquine phosphate

2022

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With the continuous spread of COVID-19, the water pollution problems caused by the abuse of chloroquine phosphate (CQP) as an antiviral drug have attracted wide attention. The cubic Fm-3m spinel high entropy oxide (HEO)—(MgCuMnCoFe)O x was prepared by coprecipitation method as the catalytic wet air oxidation (CWAO) catalyst to treat CQP simulated wastewater. Through electron spin resonance (ESR) analysis, HEO will stimulate the production of superoxide radical (·O 2 − ) and hydroxyl radical (·OH) in the wet air oxidation (WAO) process, which accelerates the degradation and mineralization of CQP. Through response surface method (RSM) optimization, the optimal degradation conditions of CQP in CWAO were proposed: initial oxygen pressure of 15 bar, catalyst dosage of 1.4 g/L and temperature of 230 °C. The advantages of HEO in CWAO were analyzed by principal component analysis (PCA). The degradation mechanism of CQP in CWAO by (MgCuMnCoFe)O x were explored. This work provides a new idea for the rapid development of HEO in the field of environmental catalysis. Supplementary Information The online version contains supplementary material available at 10.1007/s10853-022-07271-z.

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Section: Resultsmentioning

confidence: 99%

Performance of high temperature phase-stable high entropy oxide (MgCuMnCoFe)Ox in catalytic wet air oxidation of chloroquine phosphate

2022

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“…For all these batch tests, the air was supplied to the reactors at a flow rate of up to 100 mL/min using air pumps. The initial concentration of the electrolyte (Na 2 SO 4 ) was 50 mM, while that of CLQ was 5 mg/L which was to mimic the CLQ level present in the wastewater produced from the mass production of CLQ and was already applied in previous studies. , The results of preliminary experiments (data not shown) revealed that operating EF-FeS 2 /GF at the initial pH of 3.0 resulted in the sustained solution pH and the highest CLQ removal as compared with pH of 7.0 and 12.0. Therefore, the solution pH was adjusted to 3.0 at the beginning of each batch test with 0.05 M H 2 SO 4 and monitored by a portable pH meter (Mettler Toledo Instruments (Shanghai) Co., Ltd).…”

Section: Methodsmentioning

confidence: 99%

Efficient Chloroquine Removal by Electro-Fenton with FeS₂-Modified Cathode: Performance, Influencing Factors, Pathway Contributions, and Degradation Mechanisms

Lin

Chen

et al. 2023

ACS EST Water

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The application of chloroquine (CLQ) due to its antibacterial/antiviral nature and high potential of being persistent and bioaccumulative poses a significant environmental threat. In this study, the electro-Fenton (EF) process with pyrite (FeS2)-modified graphite felt (FeS2/GF) as the cathode (EF-FeS2/GF), capable of providing a stable acidic environment with a solution pH of 3.0 was constructed and found to (i) achieve 83.3 ± 0.4% 60 min CLQ removal and (ii) maintain about 60.0% CLQ removal during consecutive batch tests. FeS2 loading amount, current density applied, and spacing between electrodes all influenced the efficacy of EF-FeS2/GF, with the optimum CLQ removal obtained at 10 mg, 150 mA, and 2.0 cm, respectively. Adsorption and electrocatalysis were both observed to contribute to the CLQ removal while the EF process with the verified functioning of ·OH played a dominant role. Based on the detected intermediates with identified ecotoxicities, two main paths were postulated to describe the degradation processes which led to the mineralization of CLQ. These findings supported that the EF-FeS2/GF could be an efficient technology to treat wastewater contaminated with CLQ.

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“…•− (E = 2.5-3.1 V) also degrades CQ under acidic conditions [23]. Similarly, biomass carbon-based catalysts also effi ciently degrade CQ in a wide pH range (3-11) [24,25], and the biochar-supported red mud catalyst (RM-BC) activated persulfate process degrades CQ phosphate, HCQ sulfate, and other COVID-19 drugs [26]. Specialized activated carbon sorbents manufactured from palm kernel (Elaeis guineensis) [27] and plantain peel-activated carbon-supported zinc oxide (PPAC-ZnO) [28] possess CQ adsorption capacity.…”

Section: Introductionmentioning

confidence: 97%

Chloroquine degradation in aqueous solution under electron beam irradiation

Kabasa,

Sun,

Bułka

et al. 2024

Nukleonika

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Pharmaceutically active compounds are the most widely produced and consumed consumer products that pose a substantial threat to the environment and living organisms owing to their pharmacokinetics, side effects, and contraindications. In this study, the degradation of chloroquine (CQ), a popular antimalarial and recently proposed COVID-19 drug, was investigated under electron beam (EB) irradiation of aqueous solutions. Both the hydroxyl radical and hydrated electron generated in the radiolysis of water contribute to the degradation of CQ in aqueous solution. The overall removal efficiency for 125 mg·L-1 of the CQ solution under EB treatment is reported to be >80% at neutral pH at a maximum irradiation dose of 7 kGy. Removal efficiency is further favored by acidic and slightly alkaline conditions where reactions with hydroxyl radicals and hydrated electrons are favored, respectively. Additionally, increments in the applied dose resulted in the increased removal efficiency for the same concentration of CQ. Conversely, the removal efficiency decreased with increasing concentration of CQ at the same irradiation dose. The initial solution pH, applied irradiation dose, and initial pollutant concentration play an important role in the EB-induced degradation of CQ by influencing the available oxidizing and reducing species. The chemical oxygen demand (COD) and total organic carbon (TOC) were not significantly decreased during the treatment process and indicated the formation of organic byproducts, which were not further degraded under the current experimental conditions.

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Catalytic performance of wrapped CoO by MgO in oxidative degradation of chloroquine phosphate with peroxymonosulfate

Cited by 32 publications

References 54 publications

Performance of high temperature phase-stable high entropy oxide (MgCuMnCoFe)Ox in catalytic wet air oxidation of chloroquine phosphate

Performance of high temperature phase-stable high entropy oxide (MgCuMnCoFe)Ox in catalytic wet air oxidation of chloroquine phosphate

Efficient Chloroquine Removal by Electro-Fenton with FeS₂-Modified Cathode: Performance, Influencing Factors, Pathway Contributions, and Degradation Mechanisms

Chloroquine degradation in aqueous solution under electron beam irradiation

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Catalytic performance of wrapped CoO by MgO in oxidative degradation of chloroquine phosphate with peroxymonosulfate

Cited by 32 publications

References 54 publications

Performance of high temperature phase-stable high entropy oxide (MgCuMnCoFe)Ox in catalytic wet air oxidation of chloroquine phosphate

Performance of high temperature phase-stable high entropy oxide (MgCuMnCoFe)Ox in catalytic wet air oxidation of chloroquine phosphate

Efficient Chloroquine Removal by Electro-Fenton with FeS2-Modified Cathode: Performance, Influencing Factors, Pathway Contributions, and Degradation Mechanisms

Chloroquine degradation in aqueous solution under electron beam irradiation

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Efficient Chloroquine Removal by Electro-Fenton with FeS₂-Modified Cathode: Performance, Influencing Factors, Pathway Contributions, and Degradation Mechanisms