Photooxidation of anionic surfactant (sodium lauryl sulfate) in a three-phase fluidized bed reactor using TiO2/SiO2 photocatalyst

Nam, Wooseok; Woo, Kyungchan; Han, Guiyoung

doi:10.1016/j.jiec.2008.11.006

Cited by 36 publications

(13 citation statements)

References 12 publications

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“…; Saien & Soleymani ), which are powerful oxidizing agents and capable of attacking a wide variety of organic molecules (Nam et al . ). AOPs photocatalysis systems include a combination of semiconductors and light.…”

Section: Introductionmentioning

confidence: 97%

“…We found also treatment using bacterial beds; this process was less adapted because of the fluctuations of the wastewater composition (Pagga & Brown 1986;Horning 1997). Since several years 'Advanced Oxidation Processes' (AOPs) have appeared, these techniques are based on the production of reactive species such as hydroxyl radicals (HO • ) by several ways (Cho et al 2008;Saien & Soleymani 2012), which are powerful oxidizing agents and capable of attacking a wide variety of organic molecules (Nam et al 2009). AOPs photocatalysis systems include a combination of semiconductors and light.…”

Section: Introductionmentioning

confidence: 99%

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Photodegradation of phenol red in the presence of oxyhydroxide of Fe(III) (Goethite) under artificial and a natural light

Belattar

Debbache

Ghoul

et al. 2018

Water & Environment J

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The (α‐FeOOH) Goethite composite is a stable and an efficient catalyst in aqueous suspension under irradiation at 365 nm and by solar light. The photocatalytic activities of this composite were evaluated using Phenol Red (PR) dye (phenolsulfonphthalein class). In the dark, controlling factors, such as the pH and the adsorption of PR on Goethite surface were evaluated (before starting the photochemical experiments). It was found that the system PR‐Goethite present a small decrease in the main band of the dye (435 nm) which was explained by the low rate of adsorption of this dye on the Goethite. Also, we note that 40% of PR decolourisation was obtained after 200 min by the system PR‐Goethite‐hydrogen peroxide (H2O2) in dark due to the formation of •OH by thermal decomposition of H2O2 on the surface of Goethite. The effects of various experimental parameters, such as initial dye concentration, pH, photocatalyst amount, tert‐Butyl alcohol effect and H2O2 addition were investigated in the study of photodegradation of the dye. The results showed that the photodegradation of PR under UV‐A (365 nm) irradiation could be enhanced greatly in the presence of H2O2. Natural radiation tests (under sunlight) showed that degradation was faster comparing with that obtained using the artificial one at 365 nm. Studies of the mineralization using total organic carbon method under naturel light certify that this method, compatible with the environment, may be considered in the treatment of wastewater and generally in the process of removal of this kind of pollutant.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Photodegradation of phenol red in the presence of oxyhydroxide of Fe(III) (Goethite) under artificial and a natural light

Belattar

Debbache

Ghoul

et al. 2018

Water & Environment J

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“…Some of the most frequent used AOPs for the degradation of surfactants are processes based on hydrogen peroxide (H 2 O 2 + UV, Fenton and photo‐Fenton) , persulfate radical (UV/S 2 O 8 2– ) , photocatalysis (mainly UV + TiO 2 ) , (TiO 2 /SiO 2 ) electrochemical oxidation , electro‐Fenton , processes based on ozone (O 3 , O 3 + UV and O 3 + catalyst) , cavitation , photolysis , and various combinations of the above. Interest in the utilization of non‐thermal plasma technology, among the numerous AOPs, has increased enormously over the last decade.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Triton X‐100 in Water Falling Film Dielectric Barrier Discharge Reactor

Aonyas

Nešić

Jović

et al. 2016

CLEAN Soil Air Water

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The aim of this study was to investigate the degradation of the non‐ionic surfactant Triton X‐100 (TX‐100) by using an advanced oxidation process in a non‐thermal plasma reactor based on water falling film dielectric barrier discharge (DBD). The effects of two catalytic plasma systems, Fe2+/DBD and H2O2/DBD, were tested to improve the degradation of TX‐100 and the mineralization efficiency in the DBD reactor. Both catalytic systems exhibited significant improvements in degradation efficiency, especially in the beginning of the treatment: the efficiency increased from 23 to 88 and 50%, for 5 mg L−1 Fe2+/DBD and 10 mmol L−1 H2O2/DBD, respectively. The mineralization efficiency of TX‐100 in the non‐catalytic DBD treatment was very low (1%), but with addition of catalysts, the mineralization efficiency was drastically improved, with H2O2/DBD at 4–34% (depending on the H2O2 concentration) and Fe2+/DBD at 2–21% (depending on the Fe2+ concentration). Degradation products of TX‐100 in non‐catalytic and two catalytic systems were identified using UHPLC‐Orbitrap‐MS. Based on the degradation products that were identified, a simple mechanistic scheme was proposed. MS analysis revealed that degradation of TX‐100 in the DBD reactor occurred by shortening the ethoxy chain. In the presence of catalysts, there are additional reactions of cleavage of the alkyl chain followed by formation of polyethoxylated phenol (H2O2/DBD) and addition of OH• radicals onto the aromatic ring (Fe2+/DBD). The final degradation products did not cause any significant toxic effects to Vibrio fischeri or Artemia salina.

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“…6,7 Some of them are ozonization, Fenton and Fenton-like processes, H 2 O 2 -UV and photocatalytic processes. [8][9][10][11][12][13][14][15] Plasma technology could be competitive towards AOPs. Plasma represents partially or fully ionized gas consisting of electrons, free radicals, ions and neutrals and it can be produced by a variety of electrical discharges.…”

Section: Introductionmentioning

confidence: 99%

Degradation of anionic surfactants using the reactor based on dielectric barrier discharge

Aonyas

Dojčinović

Dolić

et al. 2016

JSCS

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Two anionic surfactants (sodium lauryl sulfate-SDS and sodium dodecylbenzenesulfonate-SDBS) were treated with dielectric barrier discharge. Loss of surfactant activity, decrease in chemical oxygen demand (COD) and total organic carbon (TOC) as well as lower toxicity of degradation products was determined. Effects of catalysts-hydrogen peroxide and iron (II), on the above mentioned parameters, were determined. Catalysts affected the degradation of SDBS, but in the case of SDS, catalysts had no effect on degradation. Both catalysts induced the decrease of COD and TOC values. Toxicity of the solutions after the plasma treatment was lower in all the systems tested.

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Photooxidation of anionic surfactant (sodium lauryl sulfate) in a three-phase fluidized bed reactor using TiO2/SiO2 photocatalyst

Cited by 36 publications

References 12 publications

Photodegradation of phenol red in the presence of oxyhydroxide of Fe(III) (Goethite) under artificial and a natural light

Photodegradation of phenol red in the presence of oxyhydroxide of Fe(III) (Goethite) under artificial and a natural light

Degradation of Triton X‐100 in Water Falling Film Dielectric Barrier Discharge Reactor

Degradation of anionic surfactants using the reactor based on dielectric barrier discharge

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