Using NiFe2O4 as a nano photocatalyst for degradation of polyvinyl alcohol in synthetic wastewater

Shokri, Aref

doi:10.1016/j.envc.2021.100332

Cited by 35 publications

(8 citation statements)

References 30 publications

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“…On the other hand, the presence of PAA may convert •OH to C− via the reaction of •OH with PAA according to Equation (10). In comparison with previously reported results (Table 1), this process showed a relatively rapid removal of these three pollutants, especially RB5 [41][42][43][44][45][46]. The •OH was identified in Fe 2+ /PAA/H 2 O 2 system via EPR.…”

Section: Process Degradation Efficiency Assessmentsupporting

confidence: 55%

Evaluation of Fe2+/Peracetic Acid to Degrade Three Typical Refractory Pollutants of Textile Wastewater

et al. 2022

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In this work, the degradation performance of Fe2+/PAA/H2O2 on three typical pollutants (reactive black 5, ANL, and PVA) in textile wastewater was investigated in comparison with Fe2+/H2O2. Therein, Fe2+/PAA/H2O2 had a high removal on RB5 (99%) mainly owing to the contribution of peroxyl radicals and/or Fe(IV). Fe2+/H2O2 showed a relatively high removal on PVA (28%) mainly resulting from ·OH. Fe2+/PAA/H2O2 and Fe2+/H2O2 showed comparative removals on ANL. Additionally, Fe2+/PAA/H2O2 was more sensitive to pH than Fe2+/H2O2. The coexisting anions (20–2000 mg/L) showed inhibition on their removals and followed an order of HCO3− > SO42− > Cl−. Humic acid (5 and 10 mg C/L) posed notable inhibition on their removals following an order of reactive black 5 (RB5) > ANL > PVA. In practical wastewater effluent, PVA removal was dramatically inhibited by 88%. Bioluminescent bacteria test results suggested that the toxicity of Fe2+/PAA/H2O2 treated systems was lower than that of Fe2+/H2O2. RB5 degradation had three possible pathways with the proposed mechanisms of hydroxylation, dehydrogenation, and demethylation. The results may favor the performance evaluation of Fe2+/PAA/H2O2 in the advanced treatment of textile wastewater.

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Section: Process Degradation Efficiency Assessmentsupporting

confidence: 55%

Evaluation of Fe2+/Peracetic Acid to Degrade Three Typical Refractory Pollutants of Textile Wastewater

et al. 2022

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“…42 For the ZnO photocatalyst, the zero point pH (pH zpc ) of the charge is about 9.0. 43,44 While the photocatalyst surface becomes positively charged by absorbing H + ions at acidic pH, pollutant molecules become negatively charged and can be rapidly degraded.…”

Section: Ph Valuementioning

confidence: 99%

Photocatalytic degradation of oxytetracycline using ZnO catalyst

Yildiz,

Canbaz,

Mihçiokur

2024

Env Prog and Sustain Energy

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In the present study, the degradation of oxytetracycline (OTC) under ultraviolet (UV) light in the presence of ZnO catalyst was investigated, and optimum parameters for degradation efficiency were determined. Different pH values, ZnO dosages, reaction times, OTC concentrations, and UV lights were used in this study. The optimum conditions found were as follows: pH 4, ZnO 1 g L−1, reaction time 25 min, and OTC concentration 10 mg L−1. Degradation efficiency was 42.1%, 76%, 70.7%, and 61.7% for ZnO and photocatalytic (for UV‐A, UV‐B, and UV‐C) degradation at optimal conditions, respectively. The resulting products after the photocatalytic oxidation of OTC were determined in the study. To identify the toxicity of degradation products and OTC, the lowest LC 50 (50% lethal concentration) and EC 50 (50% effective concentration) values were found. The resulting ethanamine, 2‐(2,6‐dimethylphenoxy)‐N‐methyl‐ by‐products were observed to be more toxic than OTC. Furthermore, it was seen that isopropoxy carbamic acid, ethyl ester by‐products were formed, whose presence is environmentally risky for aquatic environments due to their low EC50 values.

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“…19 Moreover, in the photocatalysis process, numerous essential aspects must be considered, including the band gap energy, effective surface area, light energy absorption characteristics, and optical properties of the photocatalytic materials 20 as well as the operation intensity, temperature, and pH of the photocatalytic degradation. 21 Semiconductor-based materials, such as ZnO, 23 NiO, 24 Fe 2 O 3 , 25 CuO, 26 CoFe 2 O 4 , 27 NiFe 2 O 4 , 28 and Cd-doped SiO 2 , 29 have been widely used in the photocatalytic degradation process. 22 Based on the literature, NiO semiconductor materials are one of the significant photocatalyst materials because of their good chemical and physical properties and good stability.…”

Section: Introductionmentioning

confidence: 99%

Proficient Engineering of NiO/Cu₂S/rGO heterojunction photocatalysts: fabrication, dye degradation, and mechanism pathways towards environmental remediation

Parasuraman,

Shanmugam,

Sangaraju

et al. 2024

Environ. Sci.: Adv.

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Using NiFe2O4 as a nano photocatalyst for degradation of polyvinyl alcohol in synthetic wastewater

Cited by 35 publications

References 30 publications

Evaluation of Fe2+/Peracetic Acid to Degrade Three Typical Refractory Pollutants of Textile Wastewater

Evaluation of Fe2+/Peracetic Acid to Degrade Three Typical Refractory Pollutants of Textile Wastewater

Photocatalytic degradation of oxytetracycline using ZnO catalyst

Proficient Engineering of NiO/Cu₂S/rGO heterojunction photocatalysts: fabrication, dye degradation, and mechanism pathways towards environmental remediation

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Using NiFe2O4 as a nano photocatalyst for degradation of polyvinyl alcohol in synthetic wastewater

Cited by 35 publications

References 30 publications

Evaluation of Fe2+/Peracetic Acid to Degrade Three Typical Refractory Pollutants of Textile Wastewater

Evaluation of Fe2+/Peracetic Acid to Degrade Three Typical Refractory Pollutants of Textile Wastewater

Photocatalytic degradation of oxytetracycline using ZnO catalyst

Proficient Engineering of NiO/Cu2S/rGO heterojunction photocatalysts: fabrication, dye degradation, and mechanism pathways towards environmental remediation

Contact Info

Product

Resources

About

Proficient Engineering of NiO/Cu₂S/rGO heterojunction photocatalysts: fabrication, dye degradation, and mechanism pathways towards environmental remediation