Combined electrochemical-advanced oxidation and enzymatic process for treatment of wastewater containing emerging organic contaminants

Anawar, Hossain M.; Ahmed, Golam

doi:10.1016/b978-0-12-814673-6.00010-3

Cited by 9 publications

(8 citation statements)

References 146 publications

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“…It has been noticed that ions consumption and temperature increase with an increase in current density, at maximum COD (82.5%), and color (86.5%) reduction, it was 0.84 g. Similarly, the temperature was also found to increase 72 °C, 76 °C, 83 °C, 86.4 °C, 89 °C with an increase in current from 39 to 195Am −2 . This attributes to anodic dissolution increase with current density, which increases the amount of aluminum precipitate and temperature [29]. Thermal-oxidation along with electrooxidation The percentage removal of chemical oxygen demand (3682 mg/l) and color (350PCU) with electrocoagulation (COD 644 mg/l, color 47.25 PCU) and thermolysis (COD 1160, color 100PCU) was compared at most favorable condition is shown in Fig.…”

Section: Role Of Current Density In Terms Of Mass Loadingmentioning

confidence: 99%

Deduction of Organic and Inorganic Pollutant from Sugarcane Processing Plant Effluent by Thermal-oxidation and Electro-oxidation Processes in Batch Experiment

Sahu

2020

Chemistry Africa

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Sugarcane industries have a major contribution to the rural development of country, including pollution level to the environment. Associate with all the waste from the sugarcane industry, wastewater is a key issue to manage. Throughout the sugarcane processing season, large quantities of water consumed and discharge a large amount of wastewater. The investigation has been done to bring wastewater up to recycling limit made by pollution board. The objective of this research work is to reduced the pollutants from sugar industry effluent with thermal oxidation, electrooxidation, and combined with both treatment process. The result shows 68.5% COD and 71.2% color with thermal, 82.5% COD, and 86.5% color with electrocoagulation and 98% COD and 99.2% color reduction with a combined treatment of most appropriate conditions. In settling and filtration study 80% of efficiency was attained with the combined study. The sludge containing a lesser amount of inorganic and treated can be reutilized.

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Section: Role Of Current Density In Terms Of Mass Loadingmentioning

confidence: 99%

Deduction of Organic and Inorganic Pollutant from Sugarcane Processing Plant Effluent by Thermal-oxidation and Electro-oxidation Processes in Batch Experiment

Sahu

2020

Chemistry Africa

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“…In this way, the enzymatic immobilization opens interesting perspectives for novel technologies development, both for the enzyme market and the wastewater treatment sector, considering no universal protocols established for these processes 11 . Morsi et al 6 emphasize that processes with Lac and POD to remove emerging pollutants from wastewater have been carried out primarily with high-cost commercial enzymes or after their manipulation to increase catalytic e ciency.…”

Section: Introductionmentioning

confidence: 99%

Complete wastewater discoloration by a novel peroxidase source with promising bioxidative properties

Klanovicz

Stefanski

Camargo

et al. 2022

Preprint

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BACKGROUND Our study aimed to characterize and prospect immobilization strategies for a novel fungal peroxidase - POD (EC 1.11.1.7) and to insert it in the context of pollutant remediation, since these compounds pose risks to human and environmental health. The enzymatic extract was obtained by submerged fermentation of the fungus Trichoderma koningiopsis in an alternative substrate, consisting of fresh microalgal biomass. The immobilization efficiency was evaluated by monitoring the residual activity (RA) and the discoloration potential (DP) of a synthetic dye solution. Concomitantly, the catalytic properties of free POD were explored, and the most promising storage strategy to maintain the enzymatic activity was studied. RESULTS The novel guaiacol peroxidase expressed specific activity of up to 7801 U mg−1 in the free form, showing stability when subjected to up to 80°C in a pH range between 4.0-8.0. Furthermore, the bioproduct immobilized on magnetic nanoparticles expressed up to 689% RA and 100% DP. An increase in the RA of the enzyme, both in free and immobilized form, was also observed after storage for up to 8 months. The synthesized magnetic nanozymes showed good reusability, maintaining 13546 U mg−1 after ten cycles and removing 94% of color in a second batch. Toxicological evaluation with Allium cepa indicated that the enzymatic process of color removal with immobilized POD was essential to eliminate genotoxic effects. CONCLUSION T. koningiopsis peroxidase production and immobilization presented in our work are promising for the enzyme market and for the wastewater treatment technologies, considering its high bioxidative potential.

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“…The enzymatic immobilization opens interesting perspectives for novel technologies development, both for the enzyme market and the wastewater treatment sector, considering no universal protocols established for these processes (Anawar and Ahmed, 2019). Therefore, the present study aims to study immobilization strategies of non-commercial peroxidase, obtained through Trichoderma submerged fermentation supplemented exclusively by microalgal biomass, and evaluate its catalytic and toxicological performance in free and immobilized forms for synthetic dye discoloration.…”

Section: Introductionmentioning

confidence: 99%

“…In this way, enzymatic immobilization opens interesting possibilities for the development of novel technologies both for the enzyme market and the wastewater treatment sector, considering no universal protocols have been established for these processes. 11 Morsi et al 6 emphasize that processes with Lac and POD to remove emerging pollutants from wastewater have been carried out primarily with high-cost commercial enzymes or after their purification and immobilization. These upstream steps increase catalytic efficiency but compromise the economical viability of enzymatic processes for dye remediation.…”

mentioning

confidence: 99%

Complete wastewater discoloration by a novel peroxidase source with promising bioxidative properties

Klanovicz

Stefanski

Camargo

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Our study aimed to characterize and prospect immobilization strategies for a novel fungal peroxidase (POD) and insert it in pollutant remediation context. The enzymatic extract was obtained by submerged fermentation of Trichoderma koningiopsis in an alternative substrate consisting of fresh microalgal biomass. The immobilization efficiency was evaluated by monitoring the residual activity (RA) and the discoloration potential (DP) of a synthetic dye solution. Concomitantly, the POD catalytic properties were explored, and the most promising storage strategy to maintain the enzymatic activity was studied. RESULTS The novel and non‐purified guaiacol peroxidase from T. koningiopsis expressed a specific activity of up to 7801 U mg−1 in the free form, showing stability when subjected to up to 80 °C in a pH range between 4.0 and 8.0. Furthermore, the bioproduct immobilized on Fe3O4 magnetic nanoparticles, named magnetic nanozymes (MN‐POD), expressed up to 689% RA and 100% removal for the Direct Brown 27 dye. An increase in the enzymatic activity, in both free and immobilized forms, was also observed after storage for up to 8 months. The synthesized magnetic nanozymes showed good reusability, maintaining 13 546 U mg−1 after 10 cycles, and removing 94% of color in a second batch. Toxicological evaluation with Allium cepa indicated that the enzymatic discoloration process with immobilized POD was essential for eliminating genotoxic effects. CONCLUSION The T. koningiopsis peroxidase production and immobilization presented in this work are promising for the enzyme market and for wastewater treatment technologies due to their high bioxidative potential. © 2022 Society of Chemical Industry (SCI).

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Combined electrochemical-advanced oxidation and enzymatic process for treatment of wastewater containing emerging organic contaminants

Cited by 9 publications

References 146 publications

Deduction of Organic and Inorganic Pollutant from Sugarcane Processing Plant Effluent by Thermal-oxidation and Electro-oxidation Processes in Batch Experiment

Deduction of Organic and Inorganic Pollutant from Sugarcane Processing Plant Effluent by Thermal-oxidation and Electro-oxidation Processes in Batch Experiment

Complete wastewater discoloration by a novel peroxidase source with promising bioxidative properties

Complete wastewater discoloration by a novel peroxidase source with promising bioxidative properties

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