Ozonation Impact on Degradation and Toxicity of Non-Ionic Surfactants

Ledakowicz, S.; Perkowski, J.; Bulska, A.; Jamroz, T.; Sencio, B.

doi:10.1080/01919510500351487

Cited by 22 publications

(25 citation statements)

References 22 publications

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“…Because nonylphenoxy (poly)ethoxy carboxylic acids (NPECs), nonylphenoxy carboxylic acid (NPC), PEGs, and monoand dicarboxylated polyethylene glycols (MCPEGs and DCPEGs) have been reported to be produced by biodegradation or ozonation of NPEOs (Calvosa et al, 1991;Ying et al, 2002;Petrovic et al, 2004;Ledakowicz et al, 2005), the SIM targeted NPEOs as well as NPECs, NPC, PEGs, MCPEGs, and DCPEGs.…”

Section: Analysesmentioning

confidence: 99%

“…In addition, biodegradation of NPEOs results in production of nonylphenol mono-and diethoxylates, nonylphenoxy ethoxy acetic acid, nonylphenoxy acetic acid, and nonylphenol, which are more recalcitrant and toxic than the precursor NPEOs (Soares et al, 2008;Bergé et al, 2012). Therefore, several researchers have attempted to improve the biodegradability of NPEOs by ozonation (Narkis and Schneider-Rotel, 1980;Narkis et al, 1985;Ledakowicz et al, 2005). Ozonation of NPEOs is known to cause shortening of the ethoxy chain (Narkis and Schneider-Rotel, 1980;Narkis et al, 1985;Calvosa et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

“…Ozonation of NPEOs is known to cause shortening of the ethoxy chain (Narkis and Schneider-Rotel, 1980;Narkis et al, 1985;Calvosa et al, 1991). Other molecular structural changes also may include hydroxylation of the benzene ring (Calvosa et al, 1991;Ikehata and Gamal, 2004) and subsequent ring cleavage (Calvosa et al, 1991;Ledakowicz et al, 2005). Narkis and Schneider-Rotel (1980) attributed the improvement of biodegradability of NPEOs by ozonation to structural changes in the branched alkyl chain, phenoxy group, and ethoxy chain.…”

Section: Introductionmentioning

confidence: 99%

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Production of mono- and di-carboxylated polyethylene glycols as a factor obstacle to the successful ozonation-assisted biodegradation of ethoxylated compounds

et al. 2015

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Section: Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Production of mono- and di-carboxylated polyethylene glycols as a factor obstacle to the successful ozonation-assisted biodegradation of ethoxylated compounds

et al. 2015

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“…Therefore, it is required fi nding the proper methods of their degradation. Biodegradation is the cheapest method of the pollutants degradation (Chidambara and Quen 2005), however, in many cases surfactants solutions are toxic for microorganisms of the activated sludge or biofi lm (Ledakowicz et al 2005) causing strong inhibition on dehydrogenase activity of activated sludge biomass (Liwarska-Bizukojc and Bizukojc 2008). Furthermore, some surfactant molecules are not readily biodegradable and relatively high residuals as well partially degraded products are found in the treated effl uents and receiving waters (Ying 2006).…”

Section: Introductionmentioning

confidence: 99%

Removal efficiency of anionic surfactants from water during UVC photolysis and advanced oxidation process in H2O2/UVC system

Ríos

Olak-Kucharczyk

Gmurek

et al. 2017

Archives of Environmental Protection

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Surfactants after their use are discharged into aquatic ecosystems. These compounds may be harmful to fauna and fl ora in surface waters or can be toxic for microorganisms of the activated sludge or biofi lm in WWTP. In order to determine effectiveness of different advanced oxidation processes on the degradation of surfactants, in this study the degradation of anionic surfactants in aqueous solution using photolysis by 254 nm irradiation and by advanced oxidation process in a H 2 O 2 /UVC system was investigated. Two representatives of anionic surfactants, linear alkyl benzene sulphonate (LAS-R 11-14 ) and ether carboxylic derivate (EC-R 12-14 E 10 ) were tested. The infl uence of pH, initial surfactant concentration and dose of hydrogen peroxide on the degradation was also studied. Results show outstanding effectiveness of the H 2 O 2 /UVC system in the removal of surfactant from aqueous solutions.

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“…The toxic dose of surfactants for fish ranged from 2 to 8 mg=L. Treatment by biological degradation was not suitable for the destruction of surfactants since in many cases they were toxic to microorganisms of the active sludge or biofilm (Ledakowicz et al, 2005). Azo dyes were the most used dyes in the textile industry, accounting for over 50% of all commercial dyes (Waring and Hallas, 1990).…”

Section: Introductionmentioning

confidence: 99%

EFFECTS OF pH, INITIATOR, SCAVENGER, AND SURFACTANT ON THE OZONATION MECHANISM OF AN AZO DYE (ACID RED-151) IN A BATCH REACTOR

Özbelge

Erol

2008

Chemical Engineering Communications

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In this study, an initiator (Fe 2þ ) and a scavenger (CO 3 2À ) were used at different concentrations in a batch reactor to investigate the reaction mechanism of ozonation of a model azo dye, namely Acid Red-151 (AR-151). Also, the effect of a nonionic surfactant known as a major pollutant in many industrial wastewaters, namely polyethylene glycol (PEG), was observed on the degradation rate of AR-151. The experimental parameters and their ranges were: pH (2.5-10), initiator (0.8-50 mg=L of Fe 2þ ), surfactant (10-200 mg=L of PEG), and scavenger (10-500 mg=L of CO 3 2À ); the initial concentration of the azo dye was kept constant at 20 mg=L in all the experiments. Results showed that decomposition of ozone was enhanced with increasing pH and increasing initiator (Fe 2þ ) concentration at a scavenger concentration of 100 mg=L, when there is no dye in the medium. A scavenger concentration of 100 mg=L CO 3 2À was not sufficient to terminate the chain reactions of ozone decomposition. It was concluded that the dominant mechanism in the degradation of AR-151 was its direct oxidation with ozone molecules in water. The data obtained for the dye and chemical oxygen demand (COD) removals and total oxidation rate constants at different operating conditions were assessed in order to estimate the possible contribution of dye-oxidation by free radicals.

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Ozonation Impact on Degradation and Toxicity of Non-Ionic Surfactants

Cited by 22 publications

References 22 publications

Production of mono- and di-carboxylated polyethylene glycols as a factor obstacle to the successful ozonation-assisted biodegradation of ethoxylated compounds

Production of mono- and di-carboxylated polyethylene glycols as a factor obstacle to the successful ozonation-assisted biodegradation of ethoxylated compounds

Removal efficiency of anionic surfactants from water during UVC photolysis and advanced oxidation process in H2O2/UVC system

EFFECTS OF pH, INITIATOR, SCAVENGER, AND SURFACTANT ON THE OZONATION MECHANISM OF AN AZO DYE (ACID RED-151) IN A BATCH REACTOR

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