Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado

Paternina, Elihu; Arias, Juan Miguel

doi:10.1590/s0100-40422009000400020

Cited by 6 publications

(9 citation statements)

References 9 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The condition 2 showed an irregular behavior in 15, 30, and 45 minutes of reaction time, probably due to the intermediaries that are produced when the Ozone reacts with the hydrogen peroxide as mentioned by [33]. These intermediaries can absorb the light at the wavelength of 254 nm and consequently altering the measure of UV254.…”

Section: Bmentioning

confidence: 95%

Application of O3 and O3 /H2O2 for post-treatment of horizontal-flow anaerobic immobilized biomass (HAIB) effluent, treating hospital wastewater.

Rodriguez¹,

Rueda-Bayona²

2021

Inge Cuc

View full text Add to dashboard Cite

Introduction: In recent years, the "emerging pollutants" in urban, industrial, and surface water bodies have called the attention worldwide. In many cases, these substances correspond to pollutants that have not been yet regulated by the environmental authorities. Hospitals are considered the main source of these contaminants as a result of different activities. However, there is no consensus about the appropriate treatments for removing this kind of pollutants in the wastewaters; independent conventional biological processes do not reach the desirable values of discharge limits. Advanced oxidation processes (AOP) are known as an appropriate technology, not only to improve the biodegradability of recalcitrant compounds, but also to contribute to the removal of certain substances that are difficult to treat during the biological process. Objective: Thus, this study evaluated the application of O3z and O3 /H2O2 to the effluent of an anaerobic horizontal flow reactor and immobilized biomass (HAIB). Methodology: The oxidizers were applied in a lab-scale batch borosilicate glass reactor. The reaction time was 60 min and samples were taken at intervals of 15 min. Parameters such as absorbance at UV254, biodegradability ratio expressed as COD/BOD5, and color as VIS436 were measured. All samples were analyzed in duplicate. Results. The results showed that the application of Ozone and O3/H2O2 results in an increase in the biodegradability of 25% and 67% respectively. Concerning color, an efficiency of 85 % for Ozone and 100 % for O3 /H2O2 was observed. Besides, the AOPs applied also showed their effectiveness in removing aromatic organics, removing 40 to 50% of UV254. Conclusions: Finally, it is important to mention that the application of advanced oxidation processes as a post-treatment of anaerobic effluents increases biodegradability mainly due to the transformation suffered by recalcitrant compounds.

show abstract

Section: Bmentioning

confidence: 95%

Application of O3 and O3 /H2O2 for post-treatment of horizontal-flow anaerobic immobilized biomass (HAIB) effluent, treating hospital wastewater.

Rodriguez¹,

Rueda-Bayona²

2021

Inge Cuc

View full text Add to dashboard Cite

show abstract

“…The highest oxidation level of carbon black is reached due to increasing the number of carboxyl and lactone groups with the use of hydrogen peroxide in a concentration of 30% in the liquid-phase process and air enriched [30].…”

Section: Self-decomposition Of Hydrogen Peroxide On the Surface Of DImentioning

confidence: 99%

Self-Decomposition of Hydrogen Peroxide on the Surface of Disperse Carbon Black

Razdyakonova¹,

Kokhanovskaya²,

Лихолобов³

2015

RENSIT

View full text Add to dashboard Cite

Abstract. The study aimed to compare the catalytic activities of different carbon black grades in the decomposition of hydrogen peroxide and to reveal the properties of carbon black surface affecting the kinetic parameters of the reaction. The catalytic activities of different carbon black grades, both the channel KК354 and the furnace N121, N326, P161, P267-E and P366-E, were compared in the decomposition of hydrogen peroxide to reveal the most essential properties of carbon black surface affecting a kinetic parameter of the reaction -its activation energy. The knowledge of activation energies for the decomposition of hydrogen peroxide by different carbon black grades will allow choosing the most efficient set of available grades for their joint oxidation and optimization of the functional composition of the product and other process variables. The study has shown that a direct relationship between catalytic activity and specific surface area of carbon black is absent. The disturbing factor is the surface roughness. The functionalization mechanism of the carbon black surface upon its oxidation by hydrogen peroxide with co-agents, ozone and singlet oxygen, was considered. The highest oxidation state of carbon black is reached by increasing the content of carboxyl and lactone groups with the use of hydrogen peroxide in a concentration of 30% in the liquid-phase process and air enriched with singlet oxygen.

show abstract

“…Hydrogen peroxide, as an oxidizing agent, is used to modify properties of the carbons in the activation processes [24,25], and to analyze catalytic properties of the carbons [26], such as acid and active sites. Based on that, the removal of hydrogen peroxide from a wastewater is proposed by its interaction with activated carbon to produce oxygenated water (reaction R1) [27].…”

Section: Introductionmentioning

confidence: 99%

Sustainable recovery of wastewater to be reused in cooling towers: Towards circular economy approach

Arias

Merayo

Millán³

et al. 2021

Journal of Water Process Engineering

View full text Add to dashboard Cite

Estudio cinético de la descomposición catalizada de peróxido de hidrógeno sobre carbón activado

Cited by 6 publications

References 9 publications

Application of O3 and O3 /H2O2 for post-treatment of horizontal-flow anaerobic immobilized biomass (HAIB) effluent, treating hospital wastewater.

Application of O3 and O3 /H2O2 for post-treatment of horizontal-flow anaerobic immobilized biomass (HAIB) effluent, treating hospital wastewater.

Self-Decomposition of Hydrogen Peroxide on the Surface of Disperse Carbon Black

Sustainable recovery of wastewater to be reused in cooling towers: Towards circular economy approach

Contact Info

Product

Resources

About