Efficient photocatalytic degradation of metronidazole in wastewater under simulated sunlight using surfactant- and CuS-activated zeolite nanoparticles

Al-Musawi, Tariq J.; Moghaddam, Narjes Sadat Mazari; Rahimi, Seyedeh Masoomeh; Amarzadeh, Mohamadamin; Nasseh, Negin

doi:10.1016/j.jenvman.2022.115697

Cited by 22 publications

(7 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to our previously published works, the bandgap of CuS and SiO 2 were found to be 2.25 and 9 eV [62,63]. In addition, the X values of CuS and SiO 2 semiconductors were 5.28 and 6.47, respectively.…”

Section: Uv Irradiationmentioning

confidence: 73%

Heterogeneous Fenton-like Photocatalytic Process towards the Eradication of Tetracycline under UV Irradiation: Mechanism Elucidation and Environmental Risk Analysis

Amarzadeh,

Azqandi,

Nateq

et al. 2023

Water

Self Cite

View full text Add to dashboard Cite

The problem of the deep elimination of antibiotics in environmental bodies is exceptionally warranted. In this work, a ternary nanocomposite of FeNi3/SiO2/CuS (FSC) was fabricated and then integrated with UV light irradiation and hydrogen peroxide as the heterogeneous Fenton-like photocatalytic system for the decomposition of tetracycline (TC) from aqueous media. During this process, various influencing parameters such as pH, catalyst dosage, initial content of TC, hydrogen peroxide (H2O2) dose, and operating time were explored. At optimized circumstances, i.e., 5 of pH, 10 mg/L of TC concentration, 150 mg/L of H2O2 dosage, and 200 min of degradation time, the elimination proportion of TC was 96%. The results of capture agent tests clarified that hydroxyl radical (HO•) played the predominant role in the photocatalytic decontamination of TC. Moreover, with the elevated contact time and content of H2O2, the efficiency of TC decontamination increased significantly. Additionally, the findings of the stability and reusability experiments of the fabricated nanocomposite showed that the percentage of TC removal decreased by only about 5% after six cycles. Furthermore, the photocatalytic mechanism of the decontamination of TC over the FSC photocatalyst was elucidated. Eventually, the non-carcinogenic risk analysis in the surface water sample was carried out using multiple photocatalytic processes for the first time. These outcomes obtained in this study validate that coupling the photocatalytic system and the H2O2 oxidation agent facilitates the elimination of a great variety of pharmaceutical contaminants from aqueous media.

show abstract

Section: Uv Irradiationmentioning

confidence: 73%

Heterogeneous Fenton-like Photocatalytic Process towards the Eradication of Tetracycline under UV Irradiation: Mechanism Elucidation and Environmental Risk Analysis

Amarzadeh,

Azqandi,

Nateq

et al. 2023

Water

Self Cite

View full text Add to dashboard Cite

show abstract

“…(2) The diameter of manganese sand in their biofilter was only 0.8-1 mm, which was much smaller than that in this experiment (8~10 mm). The size of the filter material plays a key role in the removal efficiency of contaminants [14]; the smaller size of the filter material, the higher the removal efficiency of the contaminants. The value of k (0.216 min −1 ) in this experiment was higher than 0.174 min −1 [22] and 0.153 min −1 [18].…”

Section: Kinetics Of Biological Manganese Oxidationmentioning

confidence: 99%

“…Moreover, excessive oxygen is consumed during the nitrification process, which interferes with the biological manganese oxidization process, resulting in earthy and moldy-tasting water [13]. Another parameter is manganese, which can lead to aesthetic and operational problems, such as staining on plumbing fixtures and laundry [14], substrates for the growth of bacteria, and causing defects in industrial products [15]. Furthermore, manganese affects the central nervous system when it exceeds 0.05 mg/L [16].…”

Section: Introductionmentioning

confidence: 99%

Influence of Nitrite on the Removal of Organic Matter and Manganese Using Pilot-Scale Biofilter: A Kinetic Study

Nengzi,

Meng,

Qiu

et al. 2023

Water

View full text Add to dashboard Cite

Nitrite produced during ammonia oxidation can inhibit the activity of microorganisms. To provide guidance for the optimization and design of a biofilter, a pilot-scale biofilter was established to investigate the influence of nitrite on organic matter and manganese removal and on the kinetics. The results demonstrated that CODMn, ammonia, and manganese in effluent were 2.77, 0.034, and 0.026 mg/L in the steady phase, respectively. Organic matter and manganese removal were affected by nitrite during the start-up process, as well as in the ammonia increasing process. When ammonia increased from about 0.5 to 1 and 2 mg/L, organic matter, and manganese removal were affected at 4 and 3 days and 6 and 5 days, respectively. When organic matter, ammonia, and manganese in the influent were 6.27, 2.07, and 1.19 mg/L, respectively, organic matter, ammonia, and manganese oxidation all followed a first-order kinetic rate. The k-value was 0.0268, 0.268, and 0.216 min−1, and the half-life time was 24.236, 2.583, and 3.202 min, respectively. The influence of nitrite on the structure of microbial communities in the biofilter will be investigated in the future.

show abstract

“…One of the common pollutants in aquatic environments is antibiotics 3 . Exposure to antibiotics in the environment, particularly in drinking water and food crops, has the potential to inflict severe harm on public health, leading to fatal consequences 4 . Antibiotics are chemical compounds used to destroy and reduce the growth of bacteria 5 – 7 .…”

Section: Introductionmentioning

confidence: 99%

Novel nanostructure approach for antibiotic decomposition in a spinning disc photocatalytic reactor

Fallahizadeh,

Rahimi,

Gholami

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Conventional wastewater treatment processes are often unable to remove antibiotics with resistant compounds and low biological degradation. The need for advanced and sustainable technologies to remove antibiotics from water sources seems essential. In this regard, the effectiveness of a spinning disc photocatalytic reactor (SDPR) equipped with a visible light-activated Fe3O4@SiO2-NH2@CuO/ZnO core–shell (FSNCZ CS) thin film photocatalyst was investigated for the decomposition of amoxicillin (AMX), a representative antibiotic. Various characterization techniques, such as TEM, FESEM, EDX, AFM, XRD, and UV–Vis-DRS, were employed to study the surface morphology, optoelectronic properties, and nanostructure of the FSNCZ CS. Key operating parameters such as irradiation time, pH, initial AMX concentration, rotational speed, and solution flow rate were fine-tuned for optimization. The results indicated that the highest AMX decomposition (98.7%) was attained under optimal conditions of 60 min of irradiation time, a rotational speed of 350 rpm, a solution flow rate of 0.9 L/min, pH of 5, and an initial AMX concentration of 20 mg/L. Moreover, during the 60 min irradiation time, more than 69.95% of chemical oxygen demand and 61.2% of total organic carbon were removed. After the photocatalytic decomposition of AMX, there is a substantial increase in the average oxidation state and carbon oxidation state in SDPR from 1.33 to 1.94 and 3.2, respectively. Active species tests confirmed that ·OH and ·O2− played a dominant role in AMX decomposition. The developed SDPR, which incorporates a reusable and robust FSNCZ CS photocatalyst, demonstrates promising potential for the decomposition of organic compounds.

show abstract

Efficient photocatalytic degradation of metronidazole in wastewater under simulated sunlight using surfactant- and CuS-activated zeolite nanoparticles

Cited by 22 publications

References 56 publications

Heterogeneous Fenton-like Photocatalytic Process towards the Eradication of Tetracycline under UV Irradiation: Mechanism Elucidation and Environmental Risk Analysis

Heterogeneous Fenton-like Photocatalytic Process towards the Eradication of Tetracycline under UV Irradiation: Mechanism Elucidation and Environmental Risk Analysis

Influence of Nitrite on the Removal of Organic Matter and Manganese Using Pilot-Scale Biofilter: A Kinetic Study

Novel nanostructure approach for antibiotic decomposition in a spinning disc photocatalytic reactor

Contact Info

Product

Resources

About