Removal of antibiotics sulfadiazine by a biochar based material activated persulfate oxidation system: Performance, products and mechanism

Dong, Fu-Xin; Liu, Yan; Huang, Shi-Ting; Liang, Jing-Yi; Zhang, Wenxuan; Yao, Xiao-Wen; Xie, Chen; Qian, Wei; Guo, Pengran; Kong, Lingjun; Chu, Wei; Diao, Zeng-Hui

doi:10.1016/j.psep.2021.11.045

Cited by 58 publications

(11 citation statements)

References 51 publications

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“…Based on the previous literature reports and the experiment results obtained in this paper, it could be inferred that there were two generation processes of the O 2 •− in the CuFe 2 O 4 @BC/PMS system: (i) the defect structures of biochars could facilitate the electron transfer of O 2 and then produce O 2 •− (Equation (7)); (ii) with the assistance of the abundant OVs in the CuFe 2 O 4 crystal, electrons are transferred to O 2 through CuFe 2 O 4 and then reduced to O 2 •− (Equation (8)). In addition, O 2 •− could not only promote the generation of 1 O 2 (Equations (9) and (10)) [ 51 ] but also facilitate the decomposition of PMS to generate SO 4 •− and •OH (Equations (11) and (12)). Then the O 2 reacted during the degradation process and could be supplemented by Equations (11)–(13).…”

Section: Resultsmentioning

confidence: 99%

Catalytic Degradation of Ciprofloxacin in Aqueous Solution by Peroxymonosulfate Activated with a Magnetic CuFe2O4@Biochar Composite

Zeng

Zhou

et al. 2023

IJMS

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A magnetic copper ferrite and biochar composite (CuFe2O4@BC) catalyst was prepared by an improved sol-gel calcination method and initially used for the removal of antibiotics ciprofloxacin (CIP) by activated peroxymonosulfate (PMS). Using CuFe2O4@BC as the activator, 97.8% CIP removal efficiency could be achieved in 30 min. After a continuous degradation cycle, CuFe2O4@BC catalyst still exhibited great stability and repeatability and could also be quickly recovered by an external magnetic field. Meanwhile, the CuFe2O4@BC/PMS system presented good stability for metal ion leaching, which was far less than the leaching of metal ions in the CuFe2O4/PMS system. Moreover, the effects of various influencing factors, such as initial solution pH, activator loading, PMS dosage, reaction temperature, humic acid (HA), and the inorganic anions were explored. The quenching experiments and the electron paramagnetic resonance (EPR) analysis manifested that hydroxyl radical (•OH), sulfate radical (SO4•−), superoxide radical (O2•−), and singlet oxygen (1O2) were generated in the CuFe2O4@BC/PMS system, while 1O2 and O2•− are mainly involved in the degradation process. The synergistic effect between CuFe2O4 and BC enhanced the structural stability and electrical conductivity of the material, which promoted the bonding between the catalyst and PMS, resulting in the enhanced catalytic activity of CuFe2O4@BC. This indicates that CuFe2O4@BC activating PMS is a promising remediation technique for CIP-contaminated water.

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Section: Resultsmentioning

confidence: 99%

Catalytic Degradation of Ciprofloxacin in Aqueous Solution by Peroxymonosulfate Activated with a Magnetic CuFe2O4@Biochar Composite

Zeng

Zhou

et al. 2023

IJMS

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“…(2) The activation of PMS by CoFe-CN catalyst conforms to the pseudo-first-order reaction kinetics model, and its reaction rate constant is 0.987 min -1 . RhB can be basically degraded within 10 min at pH (3)(4)(5)(6)(7)(8)(9)(10)(11), indicating its structural stability.…”

Section: Hco3-+mentioning

confidence: 99%

“…However, pure carbon materials have the disadvantages of insufficient active sites and low catalytic activity. Relevant studies have shown that atomic doping can increase the surface functional groups and surface defects of carbon materials, provide more active sites for persulfate activation, and enhance the ability of carbon materials to activate sulfate 8 . Nitrogen doping is considered to be the optimal doping method at present 9 .…”

Section: Introductionmentioning

confidence: 99%

Factors of treating wastewater with modified carbon and nitrogen materials

Zhou,

Yao,

et al. 2024

Second International Conference on Physics, Photonics, and Optical Engineering (ICPPOE 2023)

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Nowadays, environmental pollution, climate change and energy shortage have become widespread concerns in the world. With the rapid development of industrial production, more and more refractory organic matter enters the water environment.Traditional treatment methods have been unable to fully meet the requirements of wastewater treatment at the present stage. Studies in recent years have found that metal frame nanocomposites have a remarkable effect in the treatment of refractory wastewater. With the proposed goals of "carbon peak" and "carbon neutrality", lithium-ion batteries have been widely used in various fields of daily industrial production and life. The waste lithium-ion batteries have significant resource characteristics, and the valuable metal elements contained in them play an active role in the neighborhood of refractory wastewater treatment.In this paper, the recycled NCM material was prepared by the method of reusing the metal leaching solution of Ni, Co and Mn in waste batteries, which combined with the activation of persulfate to produce highly active sulfate free radicals, and realized the efficient degradation of pollutants in organic wastewater.

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“…The solution was shaken at 150 rpm at 25 °C in a constant-temperature water-bath oscillator for 12 h. Three parallel experiments were carried out in each group. , and NH 4 + , were selected as representative ions in real water (Zhang R et al, 2020;Dong et al, 2022). To evaluate the effects of ionic species/strength on the adsorption capacity of 50MBC-KOH 2.5 to SAs, the ion concentration of 0-1 mmol L −1 was applied.…”

Section: Influences Of Initial Ph and Co-existing Ions On Sas Removal By Biocharmentioning

confidence: 99%

Adsorption of Sulfonamides in Aqueous Solution on Reusable Coconut-Shell Biochar Modified by Alkaline Activation and Magnetization

Sun

Zheng

et al. 2022

Front. Chem.

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Biochar is a low-cost adsorbent for sorptive removal of antibiotics from wastewater, but the adsorption efficiency needs to be improved. In this study, coconut-shell biochar was activated with KOH to improve the adsorption efficiency and magnetically modified with FeCl3 to enable recycling. The amount of KOH and the concentration of FeCl3 were optimized to reduce the pollution and production cost. The KOH-activated and FeCl3-magnetized biochar gave good sulfonamide antibiotic (SA) removal. The maximum adsorption capacities for sulfadiazine, sulfamethazine and sulfamethoxazole were 294.12, 400.00 and 454.55 mg g−1, respectively, i.e., five to seven times higher than those achieved with raw biochar. More than 80% of the adsorption capacity was retained after three consecutive adsorption-desorption cycles. A combination of scanning electron microscopy, Brunauer-Emmett-Teller analysis, X-ray diffraction, Fourier-transform infrared and Raman spectroscopies, and magnetic hysteresis analysis showed that KOH activation increased the specific surface area, porosity, and number of oxygen-rich functional groups. Iron oxide particles, which were formed by FeCl3 magnetization, covered the biochar surface. The SAs were adsorbed on the modified biochar via hydrogen bonds between SA molecules and -OH/-COOH groups in the biochar. Investigation of the adsorption kinetics and isotherms showed that the adsorption process follows a pseudo-second-order kinetic model and a monolayer adsorption mechanism. The adsorption capacity at low pH was relatively high because of a combination of π+-π electron-donor-acceptor, charge-assisted hydrogen-bonding, electrostatic, and Lewis acid-base interactions, pore filling, van der Waals forces and hydrophobic interactions. The results of this study show that magnetically modified biochar has potential applications as an effective, recyclable adsorbent for antibiotic removal during wastewater treatment.

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Removal of antibiotics sulfadiazine by a biochar based material activated persulfate oxidation system: Performance, products and mechanism

Cited by 58 publications

References 51 publications

Catalytic Degradation of Ciprofloxacin in Aqueous Solution by Peroxymonosulfate Activated with a Magnetic CuFe2O4@Biochar Composite

Catalytic Degradation of Ciprofloxacin in Aqueous Solution by Peroxymonosulfate Activated with a Magnetic CuFe2O4@Biochar Composite

Factors of treating wastewater with modified carbon and nitrogen materials

Adsorption of Sulfonamides in Aqueous Solution on Reusable Coconut-Shell Biochar Modified by Alkaline Activation and Magnetization

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