Performance analysis of heterogenous catalyst support for the decolourisation of azo dye (Congo red) by advanced oxidation process

Sundararaman, S.; Kavitha, V.; Mathew, Achu Joby; Seby, Sreya Mariya

doi:10.1016/j.bcab.2018.07.023

Cited by 6 publications

(2 citation statements)

References 27 publications

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“…The decolourisation percentage of dye increased with increase in the concentration of dye from 100 to 500 mg/L. Further increase in concentration beyond 500 mg/L percentage degradation decreased from 98.2 to 80% substantially resulted due to intense substrate inhibition at high concentration of RB dye [36].…”

Section: Resultsmentioning

confidence: 99%

Amalgamation and application of nano chitosan cross‐linked with fish scales based activated carbon as an adsorbent for the removal of reactive dye (RB9)

Sundararaman

Prabu

Narendrakumar

et al. 2020

IET nanobiotechnol.

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The extensive discomfort in the expulsion of toxic pollutants even at mild concentrations has demanded the need for prompt methods for the evacuation of dyes and heavy metals. The effective method for depuration of dye from the effluent is by sorption. Chitosan is a bio-polymer which is gaining an increasing interest as one of the sorbents. It was obtained from the crab shells by undergoing several chemical processes and used as an adsorbent for dye, metal removal and also for pharmaceutical purposes. Cross linking it with other co polymers will increase the capacity of adsorption to a maximum level. Fish scales are considered to be a major waste in the food industry and since it takes a long time for decomposing it is considered to be one of the pollutants. Hence it is utilised by converting it into activated carbon by preliminary treatment and into a muffle furnace. The obtained activated carbon is combined with chitosan by using a cross linker and utilised for adsorption mechanism. To analyse the effect of chitosan cross linked with activated carbon obtained from fish scales in adsorption of dye Reactive Blue 9 (RB9) to evaluate the adsorption studies, kinetics, mass transfer studies, thermodynamics of the bio adsorbent.

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Section: Resultsmentioning

confidence: 99%

Amalgamation and application of nano chitosan cross‐linked with fish scales based activated carbon as an adsorbent for the removal of reactive dye (RB9)

Sundararaman

Prabu

Narendrakumar

et al. 2020

IET nanobiotechnol.

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“…The preponderance of CR dye-containing wastewater induced by printing and dyeing industries causes deleterious impacts on the ecological system (sadek Kadari et al 2022). Thence, it is vital to treat such noxious effluents using an appropriate treatment manner before drainage into the environment (Hussein et al 2022, Sundararaman et al 2018. For this sake, versatile approaches have been fostered to overcome the toxic traces of CR dye in wastewater; membrane filtration, adsorption, and advanced oxidation processes (AOPs) (Guo et al 2020, Ouyang et al 2019.…”

Section: Introductionmentioning

confidence: 99%

Magnetic hierarchical flower-like Fe3O4@ZIF-67/CuNiMn-LDH catalyst with enhanced redox cycle for Fenton-like degradation of Congo red: optimization and mechanism

Eltaweil

Bakr

El-Monaem

2023

Environ Sci Pollut Res

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A novel flower-like CuNiMn-LDH was synthesized and modified, to obtain a promising Fenton-like catalyst, Fe3O4@ZIF-67/CuNiMn-LDH, with a remarkable degradation of Congo red (CR) utilizing H2O2 oxidant. The structural and morphological characteristics of Fe3O4@ZIF-67/CuNiMn-LDH were analyzed via FTIR, XRD, XPS, SEM-EDX, and SEM spectroscopy. In addition, the magnetic property and the surface’s charge were defined via VSM and ZP analysis, respectively. Fenton-like experiments were implemented to investigate the aptness conditions for the Fenton-like degradation of CR; pH medium, catalyst dosage, H2O2 concentration, temperature, and the initial concentration of CR. The catalyst exhibited supreme degradation performance for CR to reach 90.9% within 30 min at pH 5 and 25 °C. Moreover, the Fe3O4@ZIF-67/CuNiMn-LDH/H2O2 system revealed considerable activity when tested for different dyes since the degradation efficiencies of CV, MG, MB, MR, MO, and CR were 65.86, 70.76, 72.56, 75.54, 85.99, and 90.9%, respectively. Furthermore, the kinetic study elucidated that the CR degradation by the Fe3O4@ZIF-67/CuNiMn-LDH/H2O2 system obeyed pseudo-first-order kinetic model. More importantly, the concrete results deduced the synergistic effect between the catalyst components, producing a continuous redox cycle consisting of five active metal species. Eventually, the quenching test and the mechanism study proposed the predominance of the radical mechanism pathway on the Fenton-like degradation of CR by the Fe3O4@ZIF-67/CuNiMn-LDH/H2O2 system. Graphical Abstract

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Highly dispersed Mn₂O₃−Co₃O₄ nanostructures on carbon matrix as heterogeneous Fenton‐like catalyst

Hazarika

Talukdar

Sudarsanam

et al. 2020

Applied Organom Chemis

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This work reports the synthesis of various carbon (Vulcan XC‐72 R) supported metal oxide nanostructures, such as Mn2O3, Co3O4 and Mn2O3−Co3O4 as heterogeneous Fenton‐like catalysts for the degradation of organic dye pollutants, namely Rhodamine B (RB) and Congo Red (CR) in wastewater. The activity results showed that the bimetallic Mn2O3−Co3O4/C catalyst exhibits much higher activity than the monometallic Mn2O3/C and Co3O4/C catalysts for the degradation of both RB and CR pollutants, due to the synergistic properties induced by the Mn−Co and/or Mn (Co)−support interactions. The degradation efficiency of RB and CR was considerably increased with an increase of reaction temperature from 25 to 45°C. Importantly, the bimetallic Mn2O3−Co3O4/C catalyst could maintain its catalytic activity up to five successive cycles, revealing its catalytic durability for wastewater purification. The structure–activity correlations demonstrated a probable mechanism for the degradation of organic dye pollutants in wastewater, involving •OH radical as well as Mn2+/Mn3+ or Co2+/Co3+ redox couple of the Mn2O3−Co3O4/C catalyst.

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Performance analysis of heterogenous catalyst support for the decolourisation of azo dye (Congo red) by advanced oxidation process

Cited by 6 publications

References 27 publications

Amalgamation and application of nano chitosan cross‐linked with fish scales based activated carbon as an adsorbent for the removal of reactive dye (RB9)

Amalgamation and application of nano chitosan cross‐linked with fish scales based activated carbon as an adsorbent for the removal of reactive dye (RB9)

Magnetic hierarchical flower-like Fe3O4@ZIF-67/CuNiMn-LDH catalyst with enhanced redox cycle for Fenton-like degradation of Congo red: optimization and mechanism

Highly dispersed Mn₂O₃−Co₃O₄ nanostructures on carbon matrix as heterogeneous Fenton‐like catalyst

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Performance analysis of heterogenous catalyst support for the decolourisation of azo dye (Congo red) by advanced oxidation process

Cited by 6 publications

References 27 publications

Amalgamation and application of nano chitosan cross‐linked with fish scales based activated carbon as an adsorbent for the removal of reactive dye (RB9)

Amalgamation and application of nano chitosan cross‐linked with fish scales based activated carbon as an adsorbent for the removal of reactive dye (RB9)

Magnetic hierarchical flower-like Fe3O4@ZIF-67/CuNiMn-LDH catalyst with enhanced redox cycle for Fenton-like degradation of Congo red: optimization and mechanism

Highly dispersed Mn2O3−Co3O4 nanostructures on carbon matrix as heterogeneous Fenton‐like catalyst

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About

Highly dispersed Mn₂O₃−Co₃O₄ nanostructures on carbon matrix as heterogeneous Fenton‐like catalyst