Performance of phenolic wastewater degradation with ozonation and catalytic ozonation technique in multi injection bubble column reactor

Ghaisani, Sarah V.; Wahyudi, Dionisius P.; Enjarlis,; Karamah, Eva Fathul; Bismo, Setijo

doi:10.1063/1.5134568

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…It also yields a more homogeneous mixture. In the bubble column, oxidation reactions such as degradation, sterilization, and chemical bond severance [13], [14], [15], [16].…”

Section: Experimental Installationmentioning

confidence: 99%

Degradation of 2,4-Dichlorophenol in Aqueous Solution by Ozonation in the Presence of Iron Oxide Compound in Bubble Column Reactor

Wahyudi

Ghaisani

Bismo³

2020

EngJ

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Chlorophenols are a group of chemical substances given special attention by experts and researchers of industrial wastewater due to their high toxicity and low biodegradability. The degradation of these compounds, often used in studies is 2,4-Dichlorophenol (2,4-DCP), either use conventional processing methods or contemporary approaches such as catalytic ozonation and AOPs (Advanced Oxidation Processes). The laboratory-scale 2,4-DCP degradation technique in this study was carried out in a multiinjection bubble column, with very satisfactory processing results. This is mainly due to the ability of hydroxyl radicals to decompose almost all 2,4-DCP in wastewater as well as not giving out a dangerous product. Specifically, the chlorophenol waste used here is a synthetic wastewater or dilute 2,4-DCP solution focused on investigating the effect of air flow rate, wastewater flow rate, and the amount of iron oxide (FeO and / or Fe2O3) involved. This bench scale processing of 2,4-DCP degradation is a semi-continuous, with an initial concentration of 2,4-DCP of 50 ppm and 60 minutes of ozonation time. In this study, the use of FeO and/or Fe2O3 catalysts does not significantly affect the degradation efficiency of 2,4-DCP. With the non-catalytic ozonation technique, the highest percentage of phenolic and COD degradation obtained was 99.83% and 84.31% at an air flow rate of 12 L / min and a wastewater flow rate of 495 mL / min. For catalytic ozonation, the highest phenolic and COD degradation under the same operating conditions was 99.64% and 86.44%.

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“…It also yields a more homogeneous mixture. In the bubble column, oxidation reactions such as degradation, sterilization, and chemical bond severance [13], [14], [15], [16].…”

Section: Experimental Installationmentioning

confidence: 99%

Degradation of 2,4-Dichlorophenol in Aqueous Solution by Ozonation in the Presence of Iron Oxide Compound in Bubble Column Reactor

Wahyudi

Ghaisani

Bismo³

2020

EngJ

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“…Hydroxybenzene recovery from the aquatic environment is a mandatory requirement in order to safeguard the life of humans through possible contamination of this pollutant [KHAIRUL ANWAR 2011] prior to its final discharge into water bodies. Several methods have been developed and efficiently used to treat Hydroxybenzene-contaminated effluent such as Photocatalytic degradation [ALAA et al, 2020;SHIVATHARSINY;KOODALI, 2022], Ozonation [GHAISANI et al, 2019], biological [PRADEEP et al, 2015;KUKADIYA 2016], Adsorption [TERMOUL et al, 2006;DOUARA, et al 2006;Galdino, et al, 2021 Among these methods, adsorption using different solid supports such as activated carbons, biochars, clays and zeolites, is widely used nowadays, for the removal of a wide range of pollutants. By being economical adsorbents for many industrial applications, activated carbons with a high surface area and well developed pore structure are very useful and efficient in trapping all kinds of pollutants from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Activator effect on sawdust-based adsorbent efficiency: application to organic pollutants decontamination

Mekibes,

Boucherdoud,

Bestani

et al. 2024

SEES

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The aim of this study is to valorize available Sawdust as a ligno-cellulosic and locally abundant solid waste generated by different activities, via combined chemical and physical activations route and its application for the removal of hydroxybenzene as a toxic pollutant from aqueous solution in discontinuous mode. Enhancement of adsorption capacities by impregnating separately the powdered sawdust in acidic (phosphoric acid: 20%), basic (potassium hydroxide: 20%) and salty (Ammonium Persulfate: 0.1M) solutions then pyrolysis at 600°C for 1hour in tubular furnace resulting in SWDA, SWDB and SWDS- based adsorbents. The adsorptive rates of the obtained adsorbents were compared to the commercial activated carbon from Merck taken as a reference. The batch adsorption experiments resulted in a maximum adsorption capacities obtained from Langmuir model of up to 192.31, 123.56 and 109.89 and 133.33 mg/g for SWDA, SWDB, SWDS and Merck respectively. Conventional parameters influencing the removal capacity of the considered pollutant such as contact time, adsorbent dosage, pH, initial concentration and temperature were also studied. Samples characterization was carried out using Fourier-transform infrared spectroscopy (FTIR) analyses for functional groups determination, Iodine number test for porosity and scanning electronic microscopy (SEM) for microstructure examination of the samples. Adsorption kinetics was found to comply with the pseudo second order with a good correlation factor (R2 > 0.99) with intra-particle diffusion as the rate determining steps. Thermodynamics of Hydroxybenzene adsorption process was spontaneous (ΔG o <0) and endothermic (ΔHo >0). This study showed that sawdust as a waste could prove to be a very efficient adsorbent in removing toxic substances from wastewater.

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Performance of phenolic wastewater degradation with ozonation and catalytic ozonation technique in multi injection bubble column reactor

Cited by 2 publications

References 8 publications

Degradation of 2,4-Dichlorophenol in Aqueous Solution by Ozonation in the Presence of Iron Oxide Compound in Bubble Column Reactor

Degradation of 2,4-Dichlorophenol in Aqueous Solution by Ozonation in the Presence of Iron Oxide Compound in Bubble Column Reactor

Activator effect on sawdust-based adsorbent efficiency: application to organic pollutants decontamination

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