Photo-catalyst for wastewater treatment: A review of modified Fenton, and their reaction kinetics

Das, Ajit; Adak, Mrinal Kanti

doi:10.1016/j.apsadv.2022.100282

Cited by 27 publications

(4 citation statements)

References 198 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 6 illustrates the effect of ferrous ions on the yield of ammonia. According to various studies, the yield of ammonia decreased in the abundant presence of free radicals (Das and Adak, 2022;Pani et al, 2020). In this study, during the Fenton process, the yield of ammonia dropped at 0.16 g/l of the ferrous ion.…”

Section: Effect Of Ferrous Ions (Fe 2+ )mentioning

confidence: 55%

Study the influence of experimental conditions on the removal of organic compound in the Fenton process

Al-Kaabi

2023

ECB

View full text Add to dashboard Cite

The oxidation of cyclohexylamine (CHA) was carried out in a batch reactor, using Fenton's reagent. The effects of the following parameters were investigated: residence time, pH level, ferrous ion concentration, and hydrogen peroxide concentration. Residence time ranged from 30 min to 2 h, and its effect was found to be significantly positive. A pH of 3 for the medium was observed to be optimum. Ferrous ion and hydrogen peroxide concentrations ranged from 0.1 g/l to 0.265 g/l and from 0.5 g/l to 1.3 g/l, respectively. The influence of hydrogen peroxide was significant at 0.16 g/l of ferrous ions and a pH of 3. CHA removal efficiency was measured by calculating chemical oxygen demand (COD). The maximum COD removal efficiency was 62%, and the minimum yield of ammonia was 14%. The yields of nitrite and nitrate were negligible. Overall, the results proved the effectiveness of the Fenton process for the treatment of CHA.

show abstract

Section: Effect Of Ferrous Ions (Fe 2+ )mentioning

confidence: 55%

Study the influence of experimental conditions on the removal of organic compound in the Fenton process

Al-Kaabi

2023

ECB

View full text Add to dashboard Cite

show abstract

“…Advanced oxidation basically refers to methods that destroy organic compounds by producing oxygen radicals. In these methods, they use strong oxidants, catalysts, radiation, and ozone to treat wastewater [4]. Fenton process, due to low operational cost compared to other advanced oxidation processes, low toxicity of iron ion and hydrogen peroxide, its simple technology, the possibility of its application in ambient temperature and pressure, high biocompatibility, short process duration, and low energy consumption, should be widely considered to reduce high pollution levels.…”

Section: The Treatment Of Petroleum Wastewater With the Advanced Oxid...mentioning

confidence: 99%

“…The per capita standard of drinking water consumption in different countries rarely exceeds 200 liters per day. But the results of researchers' studies show that per capita water consumption is much higher than the standards set in the countries [4]. That is because besides the direct consumption of water, humans consume water through the consumption of food, fruits, and even services and goods, and its amount is on average about 3400 L per day per person in the world, which is called virtual water [5].…”

Section: Introductionmentioning

confidence: 99%

Petroleum Wastewater Treatment

Beni¹,

Adel²,

Zaeimdar³

et al. 2023

Sustainable Development

View full text Add to dashboard Cite

Petroleum hydrocarbons in refinery wastewater are considered the main cause of pollution. Wastewater from oil refineries contains large amounts of oil and fat in the form of suspended particles, light and heavy hydrocarbons, phenol, and other dissolved organic substances, which cause environmental pollution if they are discharged into the environment without treatment. Usually, conventional methods of treating petroleum wastes have a lot of costs; due to the existence of sufficient area for the construction of solar distillation ponds and suitable sunlight, as well as a large number of sunny days near the equator, the solar distillation method can be used. Membrane bioreactors based on biological decomposition and biological transformation of oils and waste oil materials have provided new solutions for the biological treatment of these wastewater. In addition to these methods, Fenton’s advanced oxidation methods, electrochemical coagulation method, and membrane filtration method are mentioned in this chapter.

show abstract

“…Moreover, the small size of NPs facilitates the diffusion of reactants and products, thereby enhancing the overall reaction kinetics. By precisely controlling the size, shape, and composition of the NPs, the photo-catalytic performance of the material for specific applications can be optimized [19,20].…”

Section: Introductionmentioning

confidence: 99%

Photo-Catalytic Activity Improvement for Organic Pollutant Removal in Wastewater using Zinc Oxide Quantum Dots: An Experimental and Modeling Study

Awwad,

Shaaban,

Ragab

et al. 2023

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

Photo-catalyst nanoparticles (NPs) find applications in many diverse fields, including environmental remediation, energy conversion, and organic synthesis. By optimizing the nanoparticle's composition, size, morphology, and surface properties, the photo-catalytic performance can be enhanced to develop more efficient and sustainable catalytic systems. This work aligns with this innovative approach and aims to improve the photo-catalytic degradation of Sulfamethoxazole (SMX) through the intensification of the photo-catalyst and the micro-reactor. ZnO-NPs were synthesized using the sol-gel method. Zinc Acetate (Z.A) and sodium hydroxide were used as precursor materials. The resulting ZnO-NPs were characterized for their structure and crystallinity using X-Ray Diffraction (XRD) and the photo-catalytic activity was assessed with a micro-structured polymer reactor. The degradation of SMX through photo-catalysis proceeds through several stages that involve coupled processes, such as the transportation of molecules and chemical reactions. To solve the mathematical equations governing the transport and photocatalytic reaction, COMSOL Multiphysics software was utilized. The characterization results demonstrate the excellent crystallinity and high purity of the synthesized ZnO-NPs, enabling the estimation of the average diameter of the NPs under different synthesis conditions. The grain growth is faster (3.5 hr) at higher temperatures (70, 80, and 90 °C), and slower (4 hr) at lower temperatures (50 and 60°C). The photo-catalytic degradation is significantly more efficient on 16 nm ZnO-NPs than 50 nm ZnO-NPs. At this size, the conversion rate reaches 96%, surpassing the performance of commercial ZnO-NPs, which only degrades 81% of SMX. The conversion rate obtained through simulation is slightly higher than that achieved in the experiments. However, this difference remains negligible, and overall, the model fits well with the experimental data. This validation of the chosen model confirms its reliability and accuracy.

show abstract

Photo-catalyst for wastewater treatment: A review of modified Fenton, and their reaction kinetics

Cited by 27 publications

References 198 publications

Study the influence of experimental conditions on the removal of organic compound in the Fenton process

Study the influence of experimental conditions on the removal of organic compound in the Fenton process

Petroleum Wastewater Treatment

Photo-Catalytic Activity Improvement for Organic Pollutant Removal in Wastewater using Zinc Oxide Quantum Dots: An Experimental and Modeling Study

Contact Info

Product

Resources

About