Integrated advanced oxidation process, ozonation-electrodegradation treatments, for nonylphenol removal in batch and continuous reactor

Barrera-Díaz, Carlos; Frontana‐Uribe, Bernardo A.; Rodríguez-Peña, M.; Gomez-Palma, J. Carlos; Bilyeu, Bryan

doi:10.1016/j.cattod.2017.09.003

Cited by 39 publications

(15 citation statements)

References 28 publications

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“…Consequently, the . OH radical oxidations are favored at low pH values, which is consistent with previous reports e. g. nonylphenol degradation with electrochemical treatments on BDD were 70 % can be attained ,,…”

Section: Resultssupporting

confidence: 92%

“…OH radicals produced at the surface. Behavior for anodic oxidations of nonylphenol has been reported and is very similar to NP 10 EO compound here studied.…”

Section: Resultssupporting

confidence: 71%

“…The results showed a degradation of 64.3 % for 16.66 mA cm −2 and 54.98 % for 11.11 mA cm −2 (Figure SI‐2). Therefore, the COD removal efficiency improve with the increase of current density; low chain carboxylic acids are generated faster in these conditions. A convenient current density is required in order to efficiently trigger the degradation electrochemical reactions (water and pollutant oxidation), thereby the Faradic charge consumption (Q) related to these reactions should be adequate .…”

Section: Resultsmentioning

confidence: 99%

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Catalytic Effect of Hydrogen Peroxide in the Electrochemical Treatment of Phenolic Pollutants using a BDD Anode

et al. 2019

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Phenolic pollutants are recalcitrant substances that cannot be removed from wastewater using the current treatments. In this study, degradation of phenolic pollutants was studied on the basis of the application of hydrogen peroxide during the electrooxidation process using BDD as anode (EO−H2O2 coupled process). The process was optimized using 4‐chlorophenol (4‐CP) as model compound and later an emerging pollutant, Nonylphenol Ethoxylate‐10 (NP10EO), was degraded using the optimized experimental conditions found. To ascertain treatment effectiveness, experiments with hydrogen peroxide (H2O2), electrooxidation (EO) and EO−H2O2 (coupled process) were carried out. The variables considered in this investigation were pH, current density, quantity of H2O2, and reaction time. It was observed that the coupled process (EO−H2O2) increases degradation efficiency, reaching 81.9 % for 4‐CP and 94.3 % for NP10EO. UV/VIS spectrophotometry, COD and HPLC analysis verified these results. The results of the analysis by cyclic voltammetry after the EO−H2O2 coupled process indicate that pollutants in the solution were efficiently oxidized. It was concluded that small amounts of hydrogen peroxide (250 μL 30 % w/v solution per 1.1 L) are sufficient to attain good results; larger amounts of H2O2 produce inhibitory effects during degradation. The slow cathode (SS) oxidation during the experiments was confirmed by XPS and AFM analysis.

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Section: Resultssupporting

confidence: 92%

“…OH radicals produced at the surface. Behavior for anodic oxidations of nonylphenol has been reported and is very similar to NP 10 EO compound here studied.…”

Section: Resultssupporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

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Catalytic Effect of Hydrogen Peroxide in the Electrochemical Treatment of Phenolic Pollutants using a BDD Anode

et al. 2019

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“…Electrochemical method (Chung et al, 2018), biological method (Wang and Wang, 2017), advanced oxidation process (Barrera-Diaz et al, 2018;Pi et al, 2018) and adsorption (Sophia et al, 2016;Sophia and Lima, 2018) are methods commonly employed for treatment of effluents containing emerging contaminants. These methods can be used for the removal of different pollutants from waters with success.…”

Section: Introductionmentioning

confidence: 99%

Conversion of Eragrostis plana Nees leaves to activated carbon by microwave-assisted pyrolysis for the removal of organic emerging contaminants from aqueous solutions

Cunha

Lima

Cimirro

et al. 2018

Environ Sci Pollut Res

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Eragrostis plana Nees leaves, abundant lignocellulosic biomass, was used as carbon source for preparation of activated carbon, by using microwave-assisted pyrolysis and chemical activation. The novel activated carbon (MWEPN) was characterised by FTIR, CHN elemental analysis, Boehm's titration method, TGA, SEM, N adsorption/desorption curves and pH of the point of zero charge (pH). Afterwards, the adsorbent was successfully employed for adsorption of the two emerging contaminants (caffeine and 2-nitrophenol). The results indicated that MWEPN had a predominantly mesoporous structure with a high surface area of 1250 m g. FTIR analysis indicated the presence of carbonyl, hydroxyl and carboxylic groups on the surface of MWEPN. The Boehm analysis showed the existence of the high amount of acid moieties on the surface of activated carbon. Adsorption kinetic indicated that the system followed the Avrami fractional order at the optimal pH of 7. The equilibrium time was attained at 30 min. The Liu isotherm model better described the isothermal data. Based on the Liu isotherm, the maximum sorption capacities (Q) of caffeine and 2-nitrophenol adsorbed onto activated carbon at 25 °C were 235.5 and 255.8 mg g, respectively.

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“…Adsorption onto sludge particulates [5], biological treatment [31], chemical treatment [32], photocatalysis [33], electrochemical degradation [34], volatilization [5], and ozonation [35] have been applied for the removal of NP from wastewater. Among the technologies, adsorption has been considered as an important option because of the unique physicochemical properties of NP such as low water solubility and a high log K OC value [3,36].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Nonylphenol to Multi-Walled Carbon Nanotubes: Kinetics and Isotherm Study

et al. 2018

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We explored the occurrence and distribution of nonylphenol (NP) in 13 Taiwanese source waters. From all the surveyed waters, NP was detected at a high concentration, which could be attributed to contamination by wastewater discharges. In this study, we applied modified multi-walled carbon nanotubes (MWCNTs) for removing NP from aqueous solution. The impact of a few experimental factors, i.e., pH, contact time, MWCNTs dose, and temperature on the NP removal efficiency of modified MWCNTs was studied. The maximum adsorption capacity of the MWCNTs was observed to be 1040 mg NP/g when the initial NP concentration was 2.5 mg/L, and the solution pH was 4. The adsorption process followed the Elovich kinetics and the Elovich isotherm, indicating it is multilayer adsorption. The thermodynamic analysis demonstrated the NP adsorption by MWCNTs was thermodynamically satisfactory and, for the most part, endothermic as in the case of phenol adsorption. The result of the current study demonstrated the significance of free binding sites and the pore size of MWCNTs in the NP adsorption. This paper will help to better comprehend the adsorption behavior and mechanism of alkyl phenolic compounds onto MWCNTs.

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Integrated advanced oxidation process, ozonation-electrodegradation treatments, for nonylphenol removal in batch and continuous reactor

Cited by 39 publications

References 28 publications

Catalytic Effect of Hydrogen Peroxide in the Electrochemical Treatment of Phenolic Pollutants using a BDD Anode

Catalytic Effect of Hydrogen Peroxide in the Electrochemical Treatment of Phenolic Pollutants using a BDD Anode

Conversion of Eragrostis plana Nees leaves to activated carbon by microwave-assisted pyrolysis for the removal of organic emerging contaminants from aqueous solutions

Adsorption of Nonylphenol to Multi-Walled Carbon Nanotubes: Kinetics and Isotherm Study

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