Evaluation of Color and COD Removal by Fenton and Photo-Fenton Processes from Industrial Paper Wastewater

Kaya, Şefika; Aşçı, Y.

doi:10.21597/jist.507181

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…The color removal effect with the Photo-Fenton System may be due to the oxidation, coagulation and adsorption processes caused by the suspension of Fe 2+ (Calderon and Olortico, 2019). Likewise, by having an adequate concentration of Fe 2+ , maximum color removal will be achieved, since according to a study carried out with Fe 2+, at concentrations between 100 ppm and 500 ppm it was determined that the concentration of 250 ppm obtained maximum color removal, with a value of 74.23% (Kaya and Asci, 2019). Likewise, another important factor that influences the discoloration of the synthetic textile effluent is the presence of UV rays during the treatment, since it accelerates the formation of OH-radicals, and these, at the same time, react rapidly with the color of the contaminant and Optimal concentration and efficiency of the photo … Rev.…”

Section: Discussionmentioning

confidence: 99%

Optimal concentration and efficiency of the photo fenton system for the treatment of a synthetic textile effluent

Fernández,

Brandon,

Azañero

2023

Rev. ambiente água

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The Photo Fenton process is an alternative process for the treatment of effluents from the textile industry, being a reagent-based chemical on Fe2+ and H2O2 + UV light, whose mechanism consists of oxidizing the pollutants until they are suitable for discharge into bodies of water. This research seeks to determine the optimum concentration of Fe2+ - H2O2 in the treatment of a synthetic textile effluent and, subsequently, to evaluate the efficiency of the system. The synthetic textile effluent was prepared under laboratory conditions, FeSO4 and H2O2 were added at different concentrations, with exposure to UV-A light throughout the process, and it was determined that the optimum concentration of the Photo Fenton reagent was 400 mg L-1 of FeSO4 and 12 ml L-1 of H2O2, a dosage that reduced initial turbidity, color, and COD by 100%, 99% and 83%, respectively, and increased the DO by 11%. Turbidity removal was obtained by carrying out the treatment in an acid medium (pH 3). The presence of Fe2+ promoted the significant removal of COD. The increase in DO was obtained by the presence of H2O2 and UV-A light, and this in turn, had a considerable influence on the removal of effluent color. Regarding the efficiency of the system, it was determined that the Photo Fenton reagent is an excellent alternative for the treatment of textile effluents with high and low organic loads, reducing contaminants derived from industry processes. Keywords: clean technology, Fe2+-H2O2, organic, oxidation, pollution, water.

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Section: Discussionmentioning

confidence: 99%

Optimal concentration and efficiency of the photo fenton system for the treatment of a synthetic textile effluent

Fernández,

Brandon,

Azañero

2023

Rev. ambiente água

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“…As an example of these; Kaya et al (2020) investigated the application of FP and photo-Fenton processes to industrial paper wastewater in a study. [23] They determined the optimum experimental parameters such as iron ion and H 2 O 2 concentrations, pH, temperature, reaction time, stirring speed and light intensity, and compared the processes. As a result of the studies, 70 % color and 51 % COD removal were obtained in FP.…”

Section: Tbars Levelsmentioning

confidence: 99%

The RSM‐CCD Optimization of Fenton Process for Industrial Wastewater Treatment and Determination of Treatment Efficiency Using Some Biochemical Responses in Dreissena polymorpha

Tanyol,

Serdar,

Ketenalp

et al. 2024

ChemistrySelect

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The study investigated antioxidant biomarkers in Dreissena polymorpha to evaluate the efficiency of Fenton process (FP) in Organized Industrial Zone Wastewater (OIZW) treatment. Antioxidant enzymatic activities, including superoxide dismutase (SOD) and catalase (CAT), glutathione peroxidase (GPX), non‐enzymatic antioxidants (GSH) and the indicator of lipid peroxidation (TBARS) were measured in D. polymorpha in response to treated OIZW by FP. The performance of the FP has been optimized with response surface methodology (RSM). The optimum conditions (reaction time, and H2O2 and Fe2+ concentration) for OIZW by the FP process were determined. The results showed that the highest COD removal efficiency (83.94 %) was obtained when as Fe2+ concentration=402.35 mg/L, H2O2 concentration=4100.30 mg/L, and reaction time=10.10 min (desirability=1.000). SOD and CAT enzyme was decreased in the 1/25 diluted OIZW group compared to control group. CAT and SOD enzyme activities were increased after treatment compared to control groups. No statistically significant changes were observed in GSH levels and GPx activities. TBARS levels were increased 1/25 diluted OIZW exposure groups compared to the control group. TBARS levels were decreased after treatment. The results revealed that antioxidant parameters are useful biomarkers for determining the treatment efficiency of the FP.

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“…For example, higher Fe 2+ or Fe 3+ concentrations led to the generation of more OH • radicals and improved the Fenton reaction. Moreover, it was demonstrated that the optimum pH for obtaining higher COD and color removal was around 2.5–3.0 . The OH • radical’s tendency to deteriorate the structure of lignin makes Fenton-based processes suitable for the removal of lignin from P&P streams due to the high oxidation capacity as well as the pH independence of lignin at room temperature. , Iron hydroxides precipitate in acidic environments, and slight lignin solubilization may pose the most challenging barriers to Fenton-based processes .…”

Section: Physical and Chemical-based Treatmentmentioning

confidence: 99%

A Comprehensive Review on Pulp and Paper Industries Wastewater Treatment Advances

Esmaeeli,

Sarrafzadeh,

Zeighami

et al. 2023

Ind. Eng. Chem. Res.

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The pulp and paper industry generates vast amounts of wastewater, and its character heavily depends on various factors (raw material, the undertaken process, the final product, etc.). The wastewater from this sector, which originates from several sources in each mill and are mostly combined, is polluting and hazardous. This paper presents a state-of-the-art review of the physical, chemical, biological, and advanced hybrid treatment techniques, concerning their effectiveness in removing specific pollutants, namely, chemical oxygen demand, lignin, color, and adsorbable organo-halogens. Throughout the manuscript, at the end of each section, a conclusive comparison has been presented and the proper method is introduced. Furthermore, numeric data regarding the effectiveness of each technique toward each pollutant are gathered from the literature and are available in the Supporting Information of the paper. Biological treatment processes using anaerobic–aerobic treatment mostly cure organic biodegradable contaminants (75–90% COD removal). Moreover, biological treatment using a consortium of microorganisms can potentially increase color removal efficiency (from 65 to 97%). Hybrid treatment is also among the candidates for color removal. To treat complex matters (lignin and AOX), physical and chemical treatments have shown promising performance, but they are generally expensive and impractical to treat huge amounts of wastewater. For the treatment of high molecular weight contaminants (lignin) advanced oxidation processes (AOPs), including ozonation and Fenton-based treatment, have shown great performance (90–99%); however, they are limited due to their maintenance and operation costs. To overcome these challenges, source separation of the wastewater streams in the pulp and paper industry is recommended. AOPs or membrane technologies or hybrid processes are suggested for the bleaching effluent (80% AOX removal), which is relatively low in amount, and a combination of conventional treatment processes would be preferred to treat wastewater streams that are more biodegradable. The biological performance can also be enhanced using granular activated carbon on the sequence. Finally, for treating black liquor, adsorption processes have proven to be the prime candidate.

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Evaluation of Color and COD Removal by Fenton and Photo-Fenton Processes from Industrial Paper Wastewater

Cited by 9 publications

References 21 publications

Optimal concentration and efficiency of the photo fenton system for the treatment of a synthetic textile effluent

Optimal concentration and efficiency of the photo fenton system for the treatment of a synthetic textile effluent

The RSM‐CCD Optimization of Fenton Process for Industrial Wastewater Treatment and Determination of Treatment Efficiency Using Some Biochemical Responses in Dreissena polymorpha

A Comprehensive Review on Pulp and Paper Industries Wastewater Treatment Advances

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