Treatment of real wastewater from the graphic industry using advanced oxidation technologies: Degradation models and feasibility analysis

Vitale, Paula; Ramos, Pamela B.; Colasurdo, Viviana; Fernández, María Belén; Eyler, Gladys N.

doi:10.1016/j.jclepro.2018.09.105

Cited by 12 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The growing allure of applications of solar photocatalysis at larger scales (pilot and industrial) [54] has raised interest on the development of models that describe suitably all the physical and chemical features of the solar photoreactors. Such approach can be applied to the photodegradation of EC mixtures in real wastewaters, but with low computational times and easy-to-implement mathematical solutions.…”

Section: Photocatalytic Solar Reactors Modelingmentioning

confidence: 99%

Recent advances on modeling of solar heterogeneous photocatalytic reactors applied for degradation of pharmaceuticals and emerging organic contaminants in water

Mueses

Colina–Márquez

Machuca-Martínez

et al. 2021

Current Opinion in Green and Sustainable Chemistry

View full text Add to dashboard Cite

Section: Photocatalytic Solar Reactors Modelingmentioning

confidence: 99%

Recent advances on modeling of solar heterogeneous photocatalytic reactors applied for degradation of pharmaceuticals and emerging organic contaminants in water

Mueses

Colina–Márquez

Machuca-Martínez

et al. 2021

Current Opinion in Green and Sustainable Chemistry

View full text Add to dashboard Cite

“…During the last few decades, efforts to treat mineral-processing wastewater via advanced oxidation processes (AOPs) have been ongoing [18][19][20]. The Fenton oxidation process, as a green oxidation technology, has attracted significant attention among AOPs due to its strong oxidative capacity for the degradation of organic contaminants [21,22].…”

Section: Introductionmentioning

confidence: 99%

Natural Pyrite as a Catalyst for a Fenton Reaction to Enhance Xanthate Degradation in Flotation Tailings Wastewater

Gong,

Li,

Yuan

et al. 2023

Minerals

View full text Add to dashboard Cite

The efficient treatment of mineral-processing wastewater has attracted soaring interest recently. This study’s objective was to degrade xanthate from flotation tailings wastewater using a pyrite-catalyzed Fenton system. A sodium butyl xanthate (SBX) removal rate of more than 96% was achieved via the method under optimal conditions (a H2O2 concentration of 0.5 mM, a FeS2 concentration of 0.5 g/L, an initial SBX concentration of 100 mg/L, and a natural pH of 9.36 ± 0.5), which is 12.85% higher than with a H2O2 system. An appropriate concentration of natural pyrite can act as a catalyst to significantly improve the oxidation capacity of H2O2. Additionally, the results of electron paramagnetic resonance and quenching measurements suggest that hydroxyl radicals (•OH) are the main active species in the H2O2-FeS2 system. The possible reaction mechanism is proposed. The H2O2 adsorbs onto the pyrite surfaces and reacts with Fe2+, triggering the formation of •OH and Fe3+. The •OH most likely attacks the SBX that adsorbs on the pyrite surface or exists in the solution and promotes the transformation of the SBX anion (C4H9OCS2−) into the intermediate butyl xanthate peroxide (BPX, C4H9OCS2O−). Finally, BPX intermediates are likely further oxidized to smaller products such as SO42−, CO2, and H2O under the ongoing attack of •OH.

show abstract

“…En la industria litográfica con impresión "offset" se generan aguas residuales, emisiones gaseosas y residuos sólidos ordinarios y peligrosos [1], como resultado del proceso de producción de revistas y material gráfico diverso. Las aguas residuales generadas en este tipo de industria se caracterizan por presentar alta variabilidad en su composición química debido a la diferencia de materiales empleados en el proceso productivo, y por presentar alta carga contaminante, que en términos de carga orgánica, se ve reflejada en valores elevados en la concentración de la demanda química de oxígeno (DQO), así como también, una muy baja biodegradabilidad (DBO5/DQO<0,3), además de la presencia de sólidos suspendidos totales (SST), sólidos disueltos (SD), dureza total, turbidez y color, junto a una elevada toxicidad [1], [2], [3].…”

Section: Introductionunclassified

Tratamiento de aguas residuales generadas en la industria de comunicación gráfica que emplea impresión tipo “Offset”. Estudio de caso

Murcia

Barrios

Valencia

2022

View full text Add to dashboard Cite

En este trabajo se evalúa el tratamiento de efluentes generados en la industria litográfica con método “offset”, aplicando el proceso de coagulación, floculación, flotación y ozonización. En el agua se miden los siguientes parámetros en cada proceso de tratamiento, estos son: pH, sólidos disueltos totales (TDS), electroconductividad (EC), carbono orgánico total (COT), demanda química de oxígeno (DQO) y turbidez. De cada proceso se analiza el porcentaje de remoción obtenido para determinar la efectividad del mismo y se realiza un análisis de costos por cada m3 de agua a tratar. El agente coagulante que reaccionó fue el policloruro de aluminio (PAC) logrando remover el 56,35% en DQO, 52,14% en COT y 92,29% en turbidez. El agua clarificada obtenida posterior al proceso de coagulación, floculación y flotación siendo sometida a oxidación con ozono obtuvo remociones del 32,91% de DQO, 94,54% de turbiedad y 27,38% de COT. Se efectuó un barrido espectrofotométrico con el objetivo de confirmar cualitativamente la remoción de contaminantes por los cambios en las absorbancias de las muestras. Para lograr una mayor disminución de DQO y COT se requiere aumentar el tiempo de ozonización, el pH del agua durante el proceso e intensificarlo con radiacón UV de 254 nm que incremente la producción de ozono y radicales OH*.

show abstract

Treatment of real wastewater from the graphic industry using advanced oxidation technologies: Degradation models and feasibility analysis

Cited by 12 publications

References 11 publications

Recent advances on modeling of solar heterogeneous photocatalytic reactors applied for degradation of pharmaceuticals and emerging organic contaminants in water

Recent advances on modeling of solar heterogeneous photocatalytic reactors applied for degradation of pharmaceuticals and emerging organic contaminants in water

Natural Pyrite as a Catalyst for a Fenton Reaction to Enhance Xanthate Degradation in Flotation Tailings Wastewater

Tratamiento de aguas residuales generadas en la industria de comunicación gráfica que emplea impresión tipo “Offset”. Estudio de caso

Contact Info

Product

Resources

About