Modelling and optimisation of p-nitrophenol removal process using homogeneous photo-periodate (UV/KPI) advanced oxidation process

Khakyzadeh, Vahid; Rezaei-Vahidian, Hadi; Sheikhaleslami, Sahra; Azimi, Seyedeh Bahareh

doi:10.1080/03067319.2021.1938022

Cited by 9 publications

(6 citation statements)

References 25 publications

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“…Also, in an acidic environment, the production of sulfate radicals can be catalyzed through reactions (4–5) which can increase the rate of DE. Also, in acidic condition, O˙ radicals are converted to hydroxyl radical that is a stronger oxidant and leads to higher DE 22

{SO}_{4}^{˙ -} + {OH}^{-} \to {SO}_{4}^{2 -} + {OH}^{˙}

{normalS}_{2} {normalO}_{8}^{2 -} + {normalH}^{+} \to {HS}_{2} {normalO}_{8}^{-}

{HS}_{2} {normalO}_{8}^{-} \to {SO}_{4}^{˙ -} + {SO}_{4}^{2 -} + {normalH}^{+}

…”

Section: Resultsmentioning

confidence: 99%

Assessment of homogeneous hybrid advanced oxidation process for degradation of para‐nitrophenol

Noroozi,

Motie,

Azimi

et al. 2023

Env Prog and Sustain Energy

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In this work, degradation and mineralization of para‐nitrophenol in the aqueous medium by a mixture of two strong oxidants of persulfate and periodate have been studied. To this aim, a photo‐reactor with a volume of 1 L has been used. Optimization and modeling of the process was performed by the response surface methodology. According to the prediction of the model, the process has an ability to remove para‐nitrophenol up to 91.6% in the optimal conditions of para‐nitrophenol initial concentration of 15 mg/L, [KPS] = 50 mg/L, [KPI] = 49.7 mg/L, and pH = 5 after 40 min. Assessment of the mineralization of para‐nitrophenol under optimal conditions showed an efficiency of about 57%, while parallel processes alone (UV and UV/KPS and UV/KPI) showed lower mineralization efficiency. Also, the kinetic study showed that the results were fitted with a pseudo‐first‐order equation with a regression coefficient of 0.97 and rate constant of 0.052 (L/min). Moreover, the electrical energy consumption for the process was calculated as 110.77 (kWh/m3) in the optimum condition. In general, the results of this work showed that the use of the homogeneous hybrid AOP methods increases the efficiency of the mineralization.

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{SO}_{4}^{˙ -} + {OH}^{-} \to {SO}_{4}^{2 -} + {OH}^{˙}

{normalS}_{2} {normalO}_{8}^{2 -} + {normalH}^{+} \to {HS}_{2} {normalO}_{8}^{-}

{HS}_{2} {normalO}_{8}^{-} \to {SO}_{4}^{˙ -} + {SO}_{4}^{2 -} + {normalH}^{+}

…”

Section: Resultsmentioning

confidence: 99%

Assessment of homogeneous hybrid advanced oxidation process for degradation of para‐nitrophenol

Noroozi,

Motie,

Azimi

et al. 2023

Env Prog and Sustain Energy

Self Cite

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“…Among the most used dyes by the food industry are those that contain an azo group (-N=N-), including the sunset yellow (SY), the Bordeaux red, and the tartrazine yellow. These dyes are extensively used in cereals, candies, dairy products, jellies, ice creams, fillings, liqueurs, powdered juices, soft drinks, and yogurts [2][3][4]. Sunset yellow (SY), also known as evening yellow, E110 or edible yellow 3, is one of the most used azo dyes.…”

Section: Introductionmentioning

confidence: 99%

Flower-like MoS2 screen-printed electrode based sensor for the sensitive detection of sunset yellow FCF in food samples

Jahani

2022

J. Electrochem. Sci. Eng.

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In this study, synthesis and electrochemical sensor application of flower-like MoS2 for sunset yellow FCF sensing were evaluated. Linear sweep voltammetry (LSV), chronoamperometry and differential pulse voltammetry (DPV) were used to determine flower-like MoS2 electrochemical sensor performances, which had LOD of 0.04 μM in the linear working range of 0.1–150.0 μM calculated from DPV. The sensor was successfully applied for the determination of sunset yellow FCF in real samples.

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“…People associate specific colors with specific flavors, therefore, the colors of food can affect their perception of taste, especially their perception of sweets and beverages. Artificial dyes may improve on natural variations in color, may enhance colors that occur naturally, or may provide color to colorless and "fun" food, thereby making it appear more attractive and appetizing, e.g., adding a red, yellow or green color to gummy sweets, which would naturally be colorless [1,2].…”

Section: Introductionmentioning

confidence: 99%

MnO2 nanorods modified screen-printed electrode for the electrochemical determination of Sudan dye in food sample

Ahmadi

Jahani

2022

J. Electrochem. Sci. Eng.

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A novel MnO2 nanorods modified screen-printed electrode was fabricated and used as a voltammetric sensor for Sudan determination. MnO2 nanorods were characterized using Field emission-scanning electron microscopy (FE-SEM). Electrochemical measurements were performed using cyclic voltammetry (CV), linear sweep voltammetry (LSV), differential pulse voltammetry (DPV), and chronoammperometry (CA). The MnO2 nanorods on the electrode surface act as an excellent catalyst for the Sudan oxidation reaction. Our modified electrode presents good electrocatalytic activity toward Sudan, a short response time of <10 s, a low detection limit of around 0.08 µM, and linear detection range from 0.25 to 300.0 µM.

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Modelling and optimisation of p-nitrophenol removal process using homogeneous photo-periodate (UV/KPI) advanced oxidation process

Cited by 9 publications

References 25 publications

Assessment of homogeneous hybrid advanced oxidation process for degradation of para‐nitrophenol

Assessment of homogeneous hybrid advanced oxidation process for degradation of para‐nitrophenol

Flower-like MoS2 screen-printed electrode based sensor for the sensitive detection of sunset yellow FCF in food samples

MnO2 nanorods modified screen-printed electrode for the electrochemical determination of Sudan dye in food sample

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