A Kinetic Study on Photocatalytic and Sonophotocatalytic Degradation of Textile Dyes

Yetim, Tuba; Tekin, Taner

doi:10.3311/ppch.8535

Cited by 12 publications

(15 citation statements)

References 33 publications

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“…Their characteristic properties were determined, distillation probes, WO experiments, and aerobic, anaerobic biodegradation tests were carried out [4,13,15]. Their results served for the basis of the assignment and the determination of the required treatment procedures.…”

Section: Resultsmentioning

confidence: 99%

“…According to the data of real PWWs the first group covers approximately 2/3-4/5 part of them [13]. The remaining part consist of three groups distinguished by the required treatment: (i) requiring distillation because they have volatile content of several percentage that encumbers biodegradation, (ii) needed WO because of recalcitrant components, (iii) a few of the total amount require both distillation and WO, in this order.…”

Section: Classification Of Pwwsmentioning

confidence: 99%

“…The metal content of PWW's can be detected preferably by X-Ray fluorescence spectroscopy using one-point calibration [13].…”

Section: Xrf Determination Of Metal Content Of Wastewatersmentioning

confidence: 99%

“…In the first period up to ~2 hours the rate is much higher than in the second one. In the I the larger molecular weight components, in the II the intermediate products (largely small molecular weight carboxylic acids) are oxidized [13,16,18]. 4.…”

Section: The Distillation Is More Beneficial In Comparison Withmentioning

confidence: 99%

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Complex Treatment for the Disposal and Utilization of Process Wastewaters of the Pharmaceutical Industry

Szabados

Jobbágy

Tóth

et al. 2017

Period. Polytech. Chem. Eng.

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show abstract

Section: Resultsmentioning

confidence: 99%

Section: Classification Of Pwwsmentioning

confidence: 99%

“…The metal content of PWW's can be detected preferably by X-Ray fluorescence spectroscopy using one-point calibration [13].…”

Section: Xrf Determination Of Metal Content Of Wastewatersmentioning

confidence: 99%

Section: The Distillation Is More Beneficial In Comparison Withmentioning

confidence: 99%

See 2 more Smart Citations

Complex Treatment for the Disposal and Utilization of Process Wastewaters of the Pharmaceutical Industry

Szabados

Jobbágy

Tóth

et al. 2017

Period. Polytech. Chem. Eng.

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show abstract

“…Bu sonuç ortamda oluşan OH * radikallerine dayandırılabilmektedir. Bilindiği üzere hidroksil radikalleri bileşik ve ara ürünlere etki eden kuvvetli oksitleyicilerdir (Gogate and Pandit, 2004;Isaev et al, 2011;Ahmeda, 2014;Volkova, 2015;Yetim and Tekin, 2016). Prosesler ayrı ayrı kullanıldıklarında daha az hidroksil radikali üretilebilirken, eşzamanlı olarak birlikte kullanıldıklarında üretilebilecek hidroksil miktarı artacağından, canlı yapıya nüfuz etmeleri de daha etkili olacaktır (Gogate and Pandit, 2004;Konstantinou, 2004;Daneshvar, 2004;Guo et al, 2011).…”

Section: Introductionunclassified

The Usage of Sonophotocatalytic Process for the Disinfection of Bacteria

Yetim¹

2016

jist

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ÖZET: Bu çalışmada, atık suların mikroorganizmalardan arıtımı için alternatif olan ve son zamanlarda dikkat çeken yöntemler kullanılmıştır. Bu amaçla özellikle atık sularda yer alan Salmonella typhi RSHMB 96051 bakterisinin giderimi sonoliz, fotokataliz ve sonofotokataliz yöntemleri kullanılarak incelenmiştir. Yapılan denemelerde farklı ışık şiddetlerinin bakteri giderimindeki etkileri bu prosesler üzerinde çalışılmıştır. Denemelerde ultrases enerjisi ve ultraviyole ışınlar hem ayrı ayrı hem de eşzamanlı olarak birlikte kullanımlarıyla yapılmıştır. Bu prosesler sırasıyla sonoliz, fotokataliz ve sonofotokataliz prosesleridir. Elde edilen sonuçlar karşılaştırıldığında her üç tekniğin de bakteri gideriminde oldukça etkili olduğu ancak fotokataliz ve sonolizin birlikte kullanılmasıyla olan etkinin en fazla olduğu tespit edilmiş ve bu yöntemle %100 giderime yaklaşık 6 dakika gibi kısa bir sürede ulaşıldığı tayin edilmiştir.Anahtar Kelimeler: Atık su, fotokataliz, Salmonella typhi, sonofotokataliz, sonoliz ABSTRACT: In this study, some of the alternative methods have been utilized for the disinfection of microorganisms in the waste water. The disinfection of Salmonella typhi RSHMB 96051 bacteria in the waste water was investigated using the sonolysis, photocatalysis and sonophotocatalysis processes. In experiments, the effects of different light intentities have been investigated with the processes mentioned above. The ultrasound energy and ultraviolet light were used seperately and together as well. These processes are called sonolysis, photocatalysis and sonophotocatalysis respectively. The results yielded that all the processes were quite effective. The simultaneous use of sonolysis and photocatalysis yielded the best results. 100% disinfection ratio was obtained within 6 minutes in this study.

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Hydrogen peroxide enhanced sonophotocatalytic degradation of acid orange 7 in aqueous solution: optimization by Box–Behnken design

Wei

Rahaman²,

Zhao

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Sonophotocatalysis has gained great attention for research into practical applications to treat refractory organic dye from wastewater. However, its degradation efficiency needs to be improved further. To further enhance the sonophotocatalytic performance, here we report a novel hydrogen peroxide (H2O2)‐assisted titania (TiO2)‐based sonophotocatalyic system (H2O2‐US‐UV/TiO2) for degradation of acid orange 7 (AO7). RESULTS Effects of operating parameters including catalyst dosage, concentration of the oxidative agents and initial pH were analyzed through a response surface method coupled with Box–Behnken experimental design (RSM‐BBD) and experiments. Introducing H2O2 into the US‐UV/TiO2 system can significantly enhance AO7 removal. A quadratic model was proposed for predicting AO7 degradation using the RSM‐BBD method, and the statistical significance of the model was confirmed by ANOVA. The real AO7 removal efficiency (95.8%) under experimental conditions of 0.5 g L−1 TiO2, 4 mmol L–1 H2O2, and initial pH 3 was comparable with the predicated value (98.6%) obtained from this model. Quenching tests revealed that the hydroxyl radical (˙OH) was the key reactive species in the sonophotocatalytic system. Degradation products including 2‐naphthol, 4‐carboxylphenylglycine, cinnamic acid and 1,10‐Decanediol were identified. CONCLUSION Adding H2O2 improved the degradation performance of AO7 in the US‐UV/TiO2 system; H2O2 concentration was a more significant experimental factor than initial pH and TiO2 dosage. A degradation pathway of AO7 removal was suggested according to results of liquid chromatography‐mass spectrometry. The novel hybrid H2O2‐US‐UV/TiO2 system can be utilized as an efficient process for recalcitrant dye wastewater treatment. © 2021 Society of Chemical Industry (SCI).

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A Kinetic Study on Photocatalytic and Sonophotocatalytic Degradation of Textile Dyes

Abstract: Abstract

Cited by 12 publications

References 33 publications

Complex Treatment for the Disposal and Utilization of Process Wastewaters of the Pharmaceutical Industry

Complex Treatment for the Disposal and Utilization of Process Wastewaters of the Pharmaceutical Industry

The Usage of Sonophotocatalytic Process for the Disinfection of Bacteria

Hydrogen peroxide enhanced sonophotocatalytic degradation of acid orange 7 in aqueous solution: optimization by Box–Behnken design

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