Highly efficient removal of trimethoprim based on peroxymonosulfate activation by carbonized resin with Co doping: Performance, mechanism and degradation pathway

Liu, Yang; Guo, Hongguang; Zhang, Yongli; Cheng, Xiaonong; Zhou, Peng; Deng, Jing; Wang, Jingquan; Li, Wei

doi:10.1016/j.cej.2018.09.086

Cited by 63 publications

(11 citation statements)

References 52 publications

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“…This was because PMS self-decomposition and increased PMS produced more ROSs. Although increasing the PMS concentration was beneficial to TC degradation, due to the self-quenching effect between HSO 5 – and ROSs, , excessive PMS has no meaning to TC degradation. Temperature had a specific impact on the activation of PMS (Figure S10d) because ROSs could be formed in systems via thermolysis of oxidants .…”

Section: Results and Discussionmentioning

confidence: 94%

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Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

Ren

et al. 2021

ACS Appl. Nano Mater.

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Hydroxyapatite (HA), as a kind of biocompatible inorganic material, is rich in hydroxyl groups on the surface and can easily undergo ion exchange reactions with metal ions. In this study, using HA nanowires (HAnW) as eco-friendly carriers and promoters, a HAnW-based heterojunction (HAnW@CoMOF), in which HA was coated by the cobalt-based metal−organic framework (Co-MOF), was synthesized by a simple in situ growth method and ion exchange method. Then, using HAnW@CoMOF to activate peroxymonosulfate, some typical organic pollutants including antibiotics and dyes, such as tetracycline (TC), malachite green, crystal violet, methylene blue, and rhodamine B, were excellently degraded. The removal rate of TC was 86% within 0.5 min and 97% within 15 min. It could also be reused for 10 times with the removal rate of TC being 95%. The catalytic mechanism was investigated with detecting reactive substances, including 1 O 2 ,• O 2 − • OH, and SO 4 −• . We considered the formation of Co−OH + in the heterojunction of HAnW@CoMOF, as there are a lot of −OH in HAnW, which fixed Co 2+ of Co-MOF. In summary, it provided an eco-friendly HA-based catalyst for effective and quick degradation of organic pollutants.

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Section: Results and Discussionmentioning

confidence: 94%

“…− and ROSs, 49,50 excessive PMS has no meaning to TC degradation. Temperature had a specific impact on the activation of PMS (Figure S10d) because ROSs could be formed in systems via thermolysis of oxidants.…”

Section: Resultsmentioning

confidence: 99%

Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

Ren

et al. 2021

ACS Appl. Nano Mater.

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“…In another study, a CuBi 2 O 4 /PMS/vis system was built to remove various aqueous PPCPs, in which the synchronous transformations of Cu 2+ /Cu + and Bi 3+ /Bi 5+ valence states and visible light irradiation synergistically promoted the production of HO • , SO 4 •– , 1 O 2 , and h + . LDHs, also known as 2D anionic clays or hydrotalcite-like materials with a general formula of [(M 2+ ) 1– x (M 3+ ) x (OH) 2 ] x + [A n – ] x / n · m H 2 O, possess tunable metal layers, large specific surface areas, and potential optical properties, making them ideal candidates in photoassisted PS activation. ,,,− …”

Section: Heterogeneous Photocatalytic Ps Activationmentioning

confidence: 99%

“…In the past few years, progress on different PS activation systems has been summarized in various review articles. ,,,− However, many of them mainly introduce the fundamentals of PS and the diverse PS activation methods instead of pointing out an environmentally friendly and promising PS activation technology, which may not be of obvious help to the development of PS-AOPs. Some published review articles mainly focus on a certain type of catalyst (e.g., Fe based, ,, Co based, − Cu based, TiO 2 based, carbon based, ,− bimetal based) used for PS activation, which lacks a comprehensive comparison between different types of catalysts used for PS activation. Recently, some review articles aimed to focus on emerging hot issues, such as single-atom catalytic PS activation − and nonradical oxidation processes. ,− Although they may be indicative for future research, a comprehensive summary and assessment of the mainstream PS-AOPs is still lacking.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Photocatalytic Activation of Persulfate for the Removal of Organic Contaminants in Water: A Critical Review

Chen

et al. 2022

ACS EST Eng.

141

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Heterogeneous photocatalytic persulfate (PS) activation technologies are being intensively studied for water treatment due to their friendly environmental benefits and photosynergistic effect in comparison with traditional PS activation systems. Previous reviews have summarized diverse PS activation methods and the role of light in the photocatalytic PS activation systems, but it is still urgent to provide a comprehensive review on the deep understanding and rational design of heterogeneous photocatalytic PS-based advanced oxidation processes (AOPs). This review intends to thoroughly address the in-depth fundamentals and mechanisms for the heterogeneous photocatalytic PS-AOPs. Challenges and improvement strategies of the heterogeneous photocatalytic PS-AOPs are also critically discussed. On the basis of a detailed survey of the published studies, heterogeneous photocatalytic PS-AOPs, including Fe-based, TiO2-based, other metal based, bimetallic, and metal-free PS-AOPs, are carefully clarified. Finally, the engineering implications and prospects are enumerated for developing efficient and environmentally friendly heterogeneous photocatalytic PS-AOPs for water treatment. It is expected that this review will motivate researchers to construct novel and promising heterogeneous photocatalytic PS-AOPs for water treatment.

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“…Therefore, the concentration of O 3 played an important effect on the degradation of TMP. Liu et al [57] carried out ozonation experiments on eight kinds of antibiotics, including ampicillin, azithromycin, erythromycin, clarithromycin, ofloxacin, sulfamethoxazole, trimethoprim, and tetracycline, and the results showed that ozonation rate was highly depended on O 3 concentration and contact time, and the removal efficiency of antibiotics increased with the increase of O 3 concentration. As shown in Figure 1a, with the increase of O 3 concentration, the removal efficiency of TMP increased.…”

Section: Removal Efficiency Of Tmp In O 3 Saturated Watermentioning

confidence: 99%

Effect of Natural Organic Matter on the Ozonation Mechanism of Trimethoprim in Water

Zhang

Zhou

Yuan

et al. 2020

Water

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Trimethoprim (TMP) is often used for the treatment of various bacterial infections. It can be detected in water, and it is difficult to be biodegraded. In this study, the degradation mechanism of TMP through ozonation and the effect of humic acids (HA) were investigated. Excessive ozone (pH 6, 0 °C) could reduce the content of TMP to less than 1% in 30 s. However, when ozone (O3) was not excessive (pH 6, 20 °C), the removal efficiency of TMP increased with the increase of O3 concentration. Four possible degradation pathways of TMP in the process of ozonation were speculated: hydroxylation, demethylation, carbonylation, and cleavage. The presence of HA in water inhibit the generation of ozonation products of TMP. The excitation-emission matrices (EEM) analysis showed that with the extension of ozonation time, the fluorescence value in the solution decreased and the fluorescence peak blue shifted. These results indicated that the structure of HA changed in the reaction and was competitively degraded with TMP. According to the free radical quenching test, the products of pyrolysis, direct hydroxylation and demethylation were mainly produced by indirect oxidation.

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Highly efficient removal of trimethoprim based on peroxymonosulfate activation by carbonized resin with Co doping: Performance, mechanism and degradation pathway

Cited by 63 publications

References 52 publications

Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

Heterogeneous Photocatalytic Activation of Persulfate for the Removal of Organic Contaminants in Water: A Critical Review

Effect of Natural Organic Matter on the Ozonation Mechanism of Trimethoprim in Water

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