Combination of ozonation and photocatalysis for pharmaceutical wastewater treatment

Ratnawati, .; Enjarlis,; Slamet, Slamet

doi:10.1063/1.5011876

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…This result is in accordance with the experiment by Chuan et al [22]. Elemental composition of PS and immobilized TiO2 on PS that was taken from 3 different places (A, B, and C) are summarized in Table 1, and the spectra of the PS TiO2 sample has been previously reported [23]. The EDX results of PS-TiO2 indicated that besides O and Ti, the components, like Si, Na, and Al that contained in PS, were detected and it gave evident the successful of impregnation process.…”

Section: Resultssupporting

confidence: 91%

Degradation of Phenol in Pharmaceutical Wastewater using TiO2/Pumice and O3/Active Carbon

Ratnawati

Enjarlis

Husnil

et al. 2019

Bull. Chem. React. Eng. Catal.

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Phenol is a toxic organic compound that detectable in the pharmaceutical wastewater, and therefore it should be eliminated. This study aims to degrade phenol in the pharmaceutical wastewater treatment using Advanced Oxidation Processes (AOPs) include the photocatalytic process applying Titanium Oxide (TiO2) that immobilized on pumice stone (PS), as well as ozone process with O3 and O3/granulated activated carbon (GAC). Degradation system used two configuration reactors that worked alternately at pH 3 and 9. Photocatalysis was conducted for 4 hours in the photoreactor that equipped with mercury lamp as a photon source, while ozonation was performed for 1 hour in the cylinder glass reactor contained an ozone generator. Phenol degradations were done by photocatalysis, ozonation, photocatalysis followed by ozonation and vice versa. The FESEM-EDS and XRD results depicted that TiO2 has impregnated on pumice stone and FESEM characterization also indicated that the photocatalyst spread across the surface of the pumice stone. BET analysis results in an increased surface area of the PS-TiO2 by 3.7 times, whereas bandgap energy down to 3 eV. It can be concluded that ozone process (with O3/GAC) that followed by photocatalysis at pH 9 could treat the liquid waste with phenol concentration 11.2 down to 1.2 ppm that nearly according to the discharge standards quality (1 ppm). Copyright © 2020 BCREC Group. All rights reserved

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Section: Resultssupporting

confidence: 91%

Degradation of Phenol in Pharmaceutical Wastewater using TiO2/Pumice and O3/Active Carbon

Ratnawati

Enjarlis

Husnil

et al. 2019

Bull. Chem. React. Eng. Catal.

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“…AOPs are effective in degrading pollutants; however, the unknown reaction pathways and the formation of oxidation transformation products (OTPs) are the primary reasons for adding another polishing treatment stage. Many studies have focused on the application of AOPs as a pre-treatment stage to increase the wastewater biodegradability, so that it can be sent to a biological process for further pollutant removal [24,99,102,151]. Given that approximately 60% of the overall operating cost of AOPs is attributed to electricity, it is important to keep the pre-treatment as short as possible to avoid mineralization and only increase biodegradability.…”

Section: Biological Treatment and Aopsmentioning

confidence: 99%

Integrated and Hybrid Processes for the Treatment of Actual Wastewaters Containing Micropollutants: A Review on Recent Advances

Asheghmoalla,

Mehrvar

2024

Processes

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The global concern regarding the release of micropollutants (MPs) into the environment has grown significantly. Considerable amounts of persistent micropollutants are present in industrial discharges. Depending solely on a singular treatment approach is inadequate for the effective removal of MPs from wastewater due to their complex composition. The performance of different treatment methods to meet the discharge standards has been widely studied. These efforts are classified as hybrid and sequential processes. Despite their adequate performance, the optimization and industrial application of these methods could be challenging and costly. This review focuses on integrated (sequential) and hybrid processes for MP removal from actual wastewater. Furthermore, to provide a thorough grasp of the treatment approaches, the operational conditions, the source of wastewater containing MPs, and its characteristics are detailed. It is concluded that the optimal sequence to achieve the removal of MPs involves biological treatment followed by an advanced oxidation process (AOP) with a final passage through an activated carbon column. To refine this process further, a membrane unit could be added based on the desired effluent quality. Nevertheless, considering practical feasibility, this study identifies specific areas requiring additional research to implement this integrated treatment strategy effectively.

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Combination of ozonation and photocatalysis for pharmaceutical wastewater treatment

Cited by 2 publications

References 16 publications

Degradation of Phenol in Pharmaceutical Wastewater using TiO2/Pumice and O3/Active Carbon

Degradation of Phenol in Pharmaceutical Wastewater using TiO2/Pumice and O3/Active Carbon

Integrated and Hybrid Processes for the Treatment of Actual Wastewaters Containing Micropollutants: A Review on Recent Advances

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