Removal of persistent textile dyes from wastewater by Fe(<scp>ii</scp>)/H2O2/H3NOH+ integrated system: process performance and limitations

Merouani, Slimane; Dehane, Aissa; Belghit, Aouattef; Hamdaoui, Oualid; Boussalem, Nour El Houda; Daif, Hassina

doi:10.1039/d2va00011c

Cited by 10 publications

(10 citation statements)

References 56 publications

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“…At pH < 5, the protonated form of hydroxylamine (H 3 NOH + ) dominates, whereas the non‐protonated form (H 2 NOH) is more prevalent between pH 7 and 12. H 3 NOH + and H 2 NOH react with • OH at rate constants of ≤5.0 × 10 8 M −1 s −1 and 9.5 × 10 9 M −1 s −1 , respectively 46 . Thus, the scavenging (deactivation) of • OH by hydroxylamine increases with an increase in pH.…”

Section: Resultsmentioning

confidence: 94%

“…H 3 NOH + and H 2 NOH react with • OH at rate constants of ≤5.0 Â 10 8 M À1 s À1 and 9.5 Â 10 9 M À1 s À1 , respectively. 46 Thus, the scavenging (deactivation) of • OH by hydroxylamine increases with an increase in pH. Lastly, some authors reported a plausible effect of HCO 3 À or CO 3 2À to explain the pH effect.…”

Section: Influence Of Operational Parametersmentioning

confidence: 98%

“…These findings are consistent with previous studies on other ROS-and non ROS-based AOPs (e.g., PI/H 2 O 2 , Fe (II)/H 2 O 2 /HA, Fe (II)/HOCl). 27,46,49 When PI and HA loadings are fixed, a constant flow of ROS is produced. Therefore, a higher initial concentration of the dye leads to an increase in the number of radicals that are scavenged by the dye molecules, resulting in a higher degradation rate.…”

Section: àmentioning

confidence: 99%

“…This observation is consistent with the fact that PI and HA are thermally stable. 27,46 The improvement in removal efficiency at higher temperatures could be attributed to the increase in molecular agitation resulting from the decrease in liquid viscosity, which enhances the probability of ROS molecules reacting with TB molecules.…”

Section: àmentioning

confidence: 99%

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Exploring the intensifying effect of periodate/hydroxylamine oxidation process for the effective mineralization of textile dyes effluents with consideration of environmental matrices

Belghit,

Merouani,

Dehane

2023

Asia-Pacific J Chem Eng

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This study delved into the potential of periodate/hydroxylamine process (PI/HA) as an efficient method for the degradation and mineralization of textile dyes. The PI/HA process generates a range of reactive oxygen species (ROS), which can degrade organic pollutants. The effects of processing conditions, common minerals, organic components, including humic acid and surfactants, and various real environmental matrices, i.e. deionized water, seawater, natural mineral water and treated wastewater effluent, on the PI/HA process efficiency were examined. The results showed that the PI/HA process could remove over 50% of initial dyes concentration in just 10 s, with 80% removal achieved at 10 min using a PI/HA molar ratio of 1 (1.5/1.5 mM). Further adjustments could result in 100% removal in less than 5 min. The process efficiently abated organic matter, with total organic carbon (TOC) reductions exceeding 80% at 60 min and ~90% at 120 min. Radical scavengers showed that •OH played a dominant role (~76%), while 1O2 contributed to a lesser extent (~8.5%). The degradation was more efficient at lower pH, a higher PI to HA molar ratio. The process was unaffected by low concentrations of common mineral anions and surfactants. Higher degradation levels were observed in natural mineral water and seawater.

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Section: Resultsmentioning

confidence: 94%

Section: Influence Of Operational Parametersmentioning

confidence: 98%

Section: àmentioning

confidence: 99%

Section: àmentioning

confidence: 99%

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Exploring the intensifying effect of periodate/hydroxylamine oxidation process for the effective mineralization of textile dyes effluents with consideration of environmental matrices

Belghit,

Merouani,

Dehane

2023

Asia-Pacific J Chem Eng

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“…Chlorine radicals (Cl • ) can be produced from the reaction between aqueous Fe(II) and chlorine, and this can destroy refractory organic pollutants due to their high efficiency and selectivity . The Fe(II)/NaClO system has attracted researchers’ attention due to its unique characteristics (stability of NaClO, economical cost of reagents, selectively produced radicals, and the very quick reaction between Fe(II) and chlorine) …”

Section: Introductionmentioning

confidence: 99%

Dicamba Degradation Using a Low-Cost Chlorine/Ferrous-Based AOP: ANN-PSO Model Development, Intermediate Identification, and Toxicity Assessment Using Microalgae

Bouizzar,

Berkani,

Kebaili

et al. 2023

Ind. Eng. Chem. Res.

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In this study, the degradation of Dicamba methyl ester (DME) was investigated using a low-cost chlorine/ferrous process. The degradation yield was determined by examining the influence of several factors, such as NaClO concentration, dicamba concentration, FeSO4 catalyst mass, and initial solution pH, over a 15 min period. To determine the optimal conditions for DME degradation, an artificial neural network (ANN) model with 4-5-1 architecture was developed. The particle swarm optimization (PSO) algorithm was then utilized in conjunction with the ANN model to identify the optimal factor levels predicted yield of 88%. The following optimal conditions were identified: [NaClO] = 422.3 μM, [Dicamba] = 4.4 mg/L, [FeSO4] = 9.5 mg/L, and a pH of 2.56. GC/MS analysis was conducted to identify the byproducts that were generated during DME degradation. Benzene, 1,2,4-trichloro-3-methoxy DME-BP (m/z 210) was the only identified byproduct that contained chlorine in its structure. A proposed reaction pathway for the DME degradation was suggested based on the obtained mass spectra. In the final stage of the study, total organic carbon (TOC) removal was analyzed using a Fenton-like process under optimized conditions for a duration of 195 min. To confirm the effectiveness of DME and its byproduct degradation, toxicity assessments were performed using the Chlorella vulgaris microalgae as a model organism. The results indicated a low toxicity of 20% when the DME mineralization reached 62.52%. These findings provide strong evidence that support the effectiveness of the proposed low-cost system for DME removal.

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Metal‐Ion and UVC Light‐Catalyzed Oxidation and Biodetoxification of Ponceau Xylidine in Aqueous Solution: A Comparative Study

Marbaniang,

Kumar,

Mulai

et al. 2024

ChemistrySelect

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Metal ion ( /oxidant) and UV light catalyzed (UV/oxidant) mineralization and biodetoxification of Ponceau Xylidine (PX) was undertaken in this study. Hydrogen peroxide (HP) and ammonium persulphate (APS) were employed as oxidants and and as metal ion catalysts. Although highest mineralization in /APS and UV/HP systems was exhibited at pH 1 (63.09 %) and 3 (64.83 %), respectively, lowest was shown by /oxidant systems at any pH. The Fenton process achieved mineralization of ≈48.50 % within the pH range of 3 to 6.15. The study established as a better catalyst than , and HP, a better oxidant (2.5 times more effective) than APS. Mineralization with UV/HP at 120 min is highest at pH 3 (92.0 %) and 6.15 (86.17 %). Various inorganic anions were found to inhibit mineralization. The maximum and minimum inhibition was shown by in UV/HP and UV/APS systems respectively. The inhibition effect of decreases with concentration till 0.01 mM, beyond which an increasing trend was observed. This study also demonstrates that the biodetoxification efficiency of various systems is in the order: UV/HP>UV/APS> /HP. Thus, UV/HP is the most suitable system for the treatment of PX, displaying a biodetoxification efficiency of 83.0 % and mineralization of 92.0 %.

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Removal of persistent textile dyes from wastewater by Fe(ii)/H₂O₂/H₃NOH⁺ integrated system: process performance and limitations

Abstract: For the objective of establishing a large vision on the limits of hydroxylamine-induced acceleration of the Fenton process, the impact of wide range of processing conditions and water matrix composition...

Cited by 10 publications

References 56 publications

Exploring the intensifying effect of periodate/hydroxylamine oxidation process for the effective mineralization of textile dyes effluents with consideration of environmental matrices

Exploring the intensifying effect of periodate/hydroxylamine oxidation process for the effective mineralization of textile dyes effluents with consideration of environmental matrices

Dicamba Degradation Using a Low-Cost Chlorine/Ferrous-Based AOP: ANN-PSO Model Development, Intermediate Identification, and Toxicity Assessment Using Microalgae

Metal‐Ion and UVC Light‐Catalyzed Oxidation and Biodetoxification of Ponceau Xylidine in Aqueous Solution: A Comparative Study

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Removal of persistent textile dyes from wastewater by Fe(ii)/H2O2/H3NOH+ integrated system: process performance and limitations

Abstract: For the objective of establishing a large vision on the limits of hydroxylamine-induced acceleration of the Fenton process, the impact of wide range of processing conditions and water matrix composition...

Cited by 10 publications

References 56 publications

Exploring the intensifying effect of periodate/hydroxylamine oxidation process for the effective mineralization of textile dyes effluents with consideration of environmental matrices

Exploring the intensifying effect of periodate/hydroxylamine oxidation process for the effective mineralization of textile dyes effluents with consideration of environmental matrices

Dicamba Degradation Using a Low-Cost Chlorine/Ferrous-Based AOP: ANN-PSO Model Development, Intermediate Identification, and Toxicity Assessment Using Microalgae

Metal‐Ion and UVC Light‐Catalyzed Oxidation and Biodetoxification of Ponceau Xylidine in Aqueous Solution: A Comparative Study

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Removal of persistent textile dyes from wastewater by Fe(ii)/H₂O₂/H₃NOH⁺ integrated system: process performance and limitations