Optimization of phenol removal from wastewater by activation of persulfate and ultrasonic waves in the presence of biochar catalyst modified by lanthanum chloride

Razmi, Rasool; Ardjmand, Mehdi; Ramavandi, Bahman; Heydarinasab, Amir

doi:10.1111/wej.12420

Cited by 19 publications

(5 citation statements)

References 19 publications

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“…Phenols are the commonly encountered organic pollutants in industrial effluents, such as tannery, pharmaceutical, resin factories, plastics, paper, and so on, , which cause severe environmental problems. , The presence of phenolic compounds in water poses a treatment challenge due to their high stability, carcinogenicity to humans, and toxicity to the environment in water bodies . Hence, the detection and degradation of phenolic pollutants is regarded as one of the greatest global challenges. , Numerous methods for the removal of phenols, such as oxidation, biodegradation, catalysis, extraction, and use of microorganisms or enzymes, have been developed and applied.…”

Section: Introductionmentioning

confidence: 99%

Graphitic Carbon Nitride Nanosheets Decorated with Cu-Doped Carbon Dots for the Detection and Degradation of Phenolic Pollutants

Yang

Yin³

et al. 2022

ACS Appl. Nano Mater.

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The heterogeneous Cu-based solid catalysts have attracted enormous attention of researchers in different potential applications. In this work, a graphitic carbon nitride/copper-doped carbon dots (g-C3N4/Cu-CDs) nanocomposite with both intrinsic peroxidase- and oxidase-like (POD- and OXD-like) activities was successfully prepared. Due to the synergistic catalytic enhancement and electron transmission provided by g-C3N4, both POD- and OXD-like activities of g-C3N4/Cu-CDs were significantly improved compared with those of g-C3N4 and Cu-CDs. Moreover, upon the addition of H2O2, g-C3N4/Cu-CDs could catalyze the oxidation of colorless o-phenylenediamine (OPD) to form a yellow fluorescent product 2,3-diaminophenazine (DAP) with yellow fluorescence. Interestingly, the OPD + H2O2 + g-C3N4/Cu-CDs system could be inhibited by phenolic compounds, which could efficiently decrease the DAP fluorescence. Based on this, a method for the quantitative detection of total phenolic substances was established. Meanwhile, the use of OXD-like activity of nanocomposites was extended for the degradation of phenols (e.g., 2-CP), which showed a good degradation efficiency. Based on the result that the conversion of Cu+/Cu2+/Cu0 plays pivotal roles in promoting the generation of radicals (i.e., •OH and •O2 –), a possible catalytic mechanism of g-C3N4/Cu-CDs was deduced. These findings showed that the proposed g-C3N4/Cu-CDs exhibit great potential to become a green catalyst for the degradation of phenolic pollutants in the environment.

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Section: Introductionmentioning

confidence: 99%

Graphitic Carbon Nitride Nanosheets Decorated with Cu-Doped Carbon Dots for the Detection and Degradation of Phenolic Pollutants

Yang

Yin³

et al. 2022

ACS Appl. Nano Mater.

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“…In recent years, phenolic compounds have become one of the main constituents of water pollutants owing to the discharge of untreated wastewater from multiple industrial areas, such as gas, coking, oil refining and petrochemicals. Specifically, phenol, which is a popular water-soluble organic pollutant in the industries, can cause symptoms of chronic as well as acute poisoning owing to the toxic features [ 73 ].…”

Section: Removal Of Various Pollutantsmentioning

confidence: 99%

The use of bimetallic metal–organic frameworks as restoration materials for pollutants removal from water environment

Yuan,

Li,

Zhu

2024

R. Soc. Open Sci.

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Bimetallic metal–organic frameworks (BMOFs) are a class of functional porous materials constructed by coordination between nodes containing two different metal ions and organic ligands. Studies have shown that the catalytic activity of BMOFs is greatly improved owing to the adjustment of charge distribution and the increase of active sites as well as the synergistic effect between the bimetals, and the advantages of their large specific surface area, high porosity, unique structure and dispersed active centres make them available as important organic materials applied in the field of wastewater treatment. In this review, the preparation and construction methods for BMOFs in recent years are summarized, and we focus on their removal of different types of pollutants in the aqueous environment, including ions, dyes, pharmaceuticals or personal care products, phenolic compounds and microorganisms, as well as their corresponding removal mechanisms. In addition, we provide an outlook on their future opportunities and challenges in wastewater treatment.

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“…Razmi et al studied the optimization of phenol removal from wastewater by activation of persulfate and ultrasonic waves in the presence of biochar catalyst modifed by lanthanum chloride. Ultrasonic waves cause the formation and breakage of gas bubbles and produce hydroxyl radicals and hydrogen that can react with phenol and lead to its breakdown [38].…”

Section: Efect Of Ultrasound Powermentioning

confidence: 99%

Artificial Neural Networks and Genetic Algorithms: An Efficient Modeling and Optimization Methodology for Degradation of Atenolol Using Activated Persulfate with Ultrasound

Moradmand

Dehdashti

Mohammadi

et al. 2023

Journal of Environmental and Public Health

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Atenolol (ATN) is a slowly biodegradable antagonist β-blocker drug and remains in the environment for a long period of time. This drug has a harmful effect on the environment and human and animal bodies. In this study, using activated persulfate with ultrasound for the degradation of ATN was investigated. The effect of independent variables including pH, ATN concentration, persulfate dose, contact time, and ultrasonic power has been studied at 5 levels. Central composite design (CCD) was used for designing the experiments in Design Expert 11.0 software. The ATN concentration was measured using high-performance liquid chromatography (HPLC). Genetic algorithms (GA) and artificial neural network (ANN) were used for optimization and prediction, respectively. The results indicated that at the optimal conditions for the experiment (pH of 6.79, reaction time of 19 min, initial ATN concentration of 15.92 mg/L, US power of 109.56 W, and PS dose of 1317.88 mg/L), the highest ATN degradation efficiency was 98.9%. The ATN degradation could be represented by the pseudo-zero-order kinetics. Also, the data of ATN were well fitted with the ANN model (R2 = 0.98). The results showed that the best pH range to eliminate ATN is the near neutral range and the GA was found to be an effective tool to optimize the experimental conditions for the removal of ATN. The ultrasonic/persulfate process as a useful technique has a high potential to remove ATN from aqueous solutions.

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Optimization of phenol removal from wastewater by activation of persulfate and ultrasonic waves in the presence of biochar catalyst modified by lanthanum chloride

Cited by 19 publications

References 19 publications

Graphitic Carbon Nitride Nanosheets Decorated with Cu-Doped Carbon Dots for the Detection and Degradation of Phenolic Pollutants

Graphitic Carbon Nitride Nanosheets Decorated with Cu-Doped Carbon Dots for the Detection and Degradation of Phenolic Pollutants

The use of bimetallic metal–organic frameworks as restoration materials for pollutants removal from water environment

Artificial Neural Networks and Genetic Algorithms: An Efficient Modeling and Optimization Methodology for Degradation of Atenolol Using Activated Persulfate with Ultrasound

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