Treatment of leachate through constructed wetlands using <i>Typha angustifolia</i> in combination with catalytic ozonation on Fe-zeolite A

Ikhlaq, Amir; Javed, Farhan; Akram, Asia; Qazi, Umair Yaqub; Masood, Zafar; Ahmed, Tanveer; Arshad, Zainab; Khalid, Sajeela; Qi, Fei

doi:10.1080/15226514.2020.1858753

Cited by 14 publications

(4 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…El pH básico en su mayoría, se ha caracterizado por ser la condición óptima en la ozonización catalítica heterogénea [43,44] Postratamiento 750 mg/L de DQO, 95 mg/L de DBO 5 , 8.9 de pH, 0.13 de BOD 5 /COD 0.79 g/h. de flujo másico de O 3 , 4500 mg/L de S2O 8 2− , 9.0 de pH., 210 min de reacción 85% de DQO, 87% de color, aumento del 47% de BOD 5 /COD, disminución de la toxicidad en 80% [25] 210 min de reacción 72% de DQO, 96% de color, 76% de amoniaco y aumento hasta 0.29 de BOD 5 /COD [26] En la Tabla 3 se presenta la descripción algunos de los estudios que han puesto a prueba los procesos de ozonización catalítica sobre lixiviados de rellenos sanitarios, donde se indica los resultados de remoción de contaminantes de acuerdo a las condiciones óptimas en cada caso.…”

Section: Ozonización Catalíticaunclassified

“…Los lixiviados están compuestos por múltiples contaminantes (altas cargas orgánicas, amonio y sales inorgánicas, así como, contenidos de hidrocarburos, pesticidas, entre otros), que lo caracterizan un líquido complejo [1,32,44,50,51]. El tratamiento de los lixiviados debe alcanzar unos estándares mínimos, generalmente expedidos por la autoridad ambiental para evitar los daños ecológicos y de la salud poblacional [52].…”

Section: Ozonización Catalíticaunclassified

See 1 more Smart Citation

Procesos Avanzados De Oxidación Basados En Ozono Como Alternativa De Tratamiento Para Lixiviados De Rellenos Sanitarios

et al. 2021

View full text Add to dashboard Cite

Los procesos basados en ozono hacen parte de los Procesos Avanzados de Oxidación que se han aplicado sobre los lixiviados de rellenos sanitarios. Las características altamente tóxicas de los lixiviados de rellenos sanitarios, pueden reducirse por medio de los procesos basados en ozono, los cuales han demostrado alcanzar altas remociones de contaminantes, en especial, de compuestos orgánicos recalcitrantes. En esta revisión se compila información reciente (2015 a 2021) referente a los procesos basados en ozono, donde se ha estudiado la eficacia como tratamiento, se analiza las condiciones óptimas de acuerdo al tipo de lixiviado y al método de tratamiento a emplear. Se identifica la tendencia de implementación como pretratamiento y postratamiento acoplado a procesos convencionales.

show abstract

Section: Ozonización Catalíticaunclassified

Procesos Avanzados De Oxidación Basados En Ozono Como Alternativa De Tratamiento Para Lixiviados De Rellenos Sanitarios

et al. 2021

View full text Add to dashboard Cite

show abstract

“…A variety of materials are used as catalysts in these processes, such as activated carbons [7,8], metal oxides [9][10][11][12], and organic-based photocatalysts [13][14][15]. Due to their stability and selectivity, zeolites were found to be highly significant for practical applications [16][17][18][19][20][21][22]. They have already been practically implied as a catalyst, ion-exchanger, and adsorbent in dif-ferent areas [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Application of Attapulgite Clay-Based Fe-Zeolite 5A in UV-Assisted Catalytic Ozonation for the Removal of Ciprofloxacin

Ikhlaq

Javaid

Akram

et al. 2022

Journal of Chemistry

Self Cite

View full text Add to dashboard Cite

For the first time, Fe-zeolite 5A (Fe-Z5A) efficacy in the UV-assisted ozonation process to remove ciprofloxacin (CF) in wastewater is investigated. FTIR, SEM, EDX, BET, and the mass transfer process for point of zero charge are used to characterize the catalyst. Furthermore, the synergic process (UV/O3/Fe-Z5A) is compared with O3, O3/UV, and Fe-Z5A/O3 processes. The influence of catalyst dose, hydroxyl radical scavenger, and off-gas ozone released is discussed. The removal efficiency of CF in wastewater (for the synergic process) is compared with a single ozonation process. The results indicate that the synergic process was more efficient than others, with about 73% CF being removed (in 60 minutes) in the synergic process. The results also show that synergic processes produce less off-gas ozone than other processes, suggesting more ozone consumption in the synergic process, and confirmed by the radical scavenger effect and hydrogen peroxide decomposition studies. The Fe-Z5A was found to operate through a hydroxyl mechanism in which Fe worked as an active site that promotes the formation of hydroxyl radicals. Finally, the synergic process was more efficient than the ozonation process in the wastewater matrix. Hence, Fe-Z5A/O3/UV pathway is highly efficient for the degradation of pharmaceuticals in wastewater.

show abstract

“…These properties depend on the size and characteristics of metal nanoparticles, such as melting temperature, magnetic computability, redox potential, and color [34]. In recent years the use of silver nanoparticles in several fields, including the medical sciences, in order to cope with HIV viruses, infectious disease, the food processes as antibacterial agents in food packaging and antibacterial properties and as antibacterial agents in nutrient packing, has drawn attention to a strong conductiveness, chemical stability, and use as a catalytic agent [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50]. Studies have shown that metal nanoparticles highly influence the bulk, morphology, stability, and (chemical and physical) properties of the experimental conditions, the Kinetics of metal ions interaction with reduced agents, and adsorption of metal nanoparticles by stabilizing agent [51][52][53].…”

Section: Introductionmentioning

confidence: 99%

Influence of Surfactant Additives on Photochemical Synthesized Silver Nanoparticles using UV Pulsed Laser Irradiations in Aqueous Silver Nitrate Solution

Qazi¹

2021

JNMES

Self Cite

View full text Add to dashboard Cite

The effect of different additives on the AgNPs formation process was explored in this study. AgNPs were synthesized in an aqueous solution of silver nitrate-containing surfactants by photoreduction of silver ions. The concentration dependency of AgNPs formation suggested that stability was induced by the equilibrium of AgNPs adsorbed by surfactants with higher carbon chain molecules such as SDS and AOT. These results open up a new window both for structural control and the development process. It also indicated that different additives had an impact on the morphology of NPs. The hydrocarbon chain influenced the growth process and demonstrated that <10 carbon chain surfactants such as SMS, SOS, did not constitute the CGC and had a minor effect on the mechanism of growth. However, the NPs formation begun at a lower limit indicated as CGC. It was observed only with hydrocarbon chains of > 10 carbon atoms such as AOT, SDS. Fluorescence results confirmed that after laser irradiation, hemi-micelle formation after the development of AgNPs.

show abstract

Treatment of leachate through constructed wetlands using Typha angustifolia in combination with catalytic ozonation on Fe-zeolite A

Cited by 14 publications

References 51 publications

Procesos Avanzados De Oxidación Basados En Ozono Como Alternativa De Tratamiento Para Lixiviados De Rellenos Sanitarios

Procesos Avanzados De Oxidación Basados En Ozono Como Alternativa De Tratamiento Para Lixiviados De Rellenos Sanitarios

Application of Attapulgite Clay-Based Fe-Zeolite 5A in UV-Assisted Catalytic Ozonation for the Removal of Ciprofloxacin

Influence of Surfactant Additives on Photochemical Synthesized Silver Nanoparticles using UV Pulsed Laser Irradiations in Aqueous Silver Nitrate Solution

Contact Info

Product

Resources

About