Selective Photometric Determination of Peroxycarboxylic Acids in the Presence of Hydrogen Peroxide

Pinkernell, Ulrich; Lüke, Hans-Joachim; Kärst, Uwe

doi:10.1039/a700509a

Cited by 79 publications

(70 citation statements)

References 11 publications

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“…The concentration of PAA and PFA were quantified by the selective oxidation reaction for organic peroxides with the colorless ABTS, to form a green product, which was quantified by absorption at 405 nm. In order to minimize the cross reaction with H 2 O 2 , the analytical reagents were modified by omitting iodide and optimizing the reaction time, as in the method described by (Pinkernell et al, 1997). Sample analysis consisted of mixing 350 µL 1.0 M acetic acid (adjusted to pH 3.50 with NaOH) with 350 µL 1.0 g·L -1 ABTS, and then adding 350 µL of sample.…”

Section: Chemical Analysismentioning

confidence: 99%

“…When the analytical method for PAA analysis in river and drinking water; based on oxidation of iodide and ABTS as described by (Pinkernell et al, 1997), was used on CSO water, control experiments were greatly biased due to the iodide reacting with H 2 O 2 . A similar problem was observed with the method previously described for PAA in biologically treated wastewater; using iodide and N,N-diethyl-p-phenylenediamine (DPD) buffered at higher than usual pH applied in analytical procedures for oxidants in water based on DPD (Hey et al, 2012).…”

Section: Concentration Measurementsmentioning

confidence: 99%

“…Samples were quantified by using the extinction coefficient of the oxidized ABTS, recalculated to 8.55 and 6.74 mg·L -1 ·Abs -1 , for PAA and PFA, respectively. Originally, the coefficients were calculated from results by (Pinkernell et al, 1997), and controlled by comparison with analysis based on titration. …”

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confidence: 99%

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Chemical disinfection of combined sewer overflow waters using performic acid or peracetic acids

Chhetri

Thornberg²,

Berner³

et al. 2014

Science of The Total Environment

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Highlights Performic and peracetic acid disinfection of combined sewer overflow was evaluated  Sewer overflow water for laboratory studies was made with diluted raw wastewater  The bathing water indicator E. coli was always easier to disinfect than Enterococcus  Peracetic acid required long contact time (2 ppm, 6 h) for efficient disinfection  Performic acid was short lived but potent, efficient disinfection by 2 ppm, 20 min Abstract We investigated the possibility of applying performic acid (PFA) and peracetic acid (PAA) for disinfection of combined sewer overflow (CSO) in existing CSO management infrastructures. The disinfection power of PFA and PAA towards Escherichia coli (E. coli) and Enterococcus were studied in batch-scale and pre-field experiments. In the batch-scale experiment, 2.5 mg·L -1 PAA removed approximately 4 log unit of E. coli and Enterococcus from CSO with a 360 min contact time. The removal of E. coli and Enterococcus from CSO was always around or above 3 log units using 2-4 mg·L -1 PFA; with a 20 min contact time in both batch-scale and prefield experiments. There were no toxicological effect measured by Vibrio fischeri when CSO was disinfected with PFA, a slight toxic effect was observed on CSO disinfected with PAA. When the design for PFA based disinfection was applied to CSO collected from an authentic event, the disinfection efficiencies were confirmed and degradation rates were slightly higher than predicted in simulated CSO.Keywords: disinfection, combined sewer overflow, peracetic acid, performic acid; chemical disinfection; stormwater treatment, Escherichia coli, Enterococcus. 2 1.0 INTRODUCTION Combined sewer overflow (CSO) is a well-known phenomenon in combined sewer systems where wastewater and rain water are transported in the same sewers. CSOs occur when the rainfall exceeds the design capacity of sewer systems and needs to be discharged to surface water near cities, either directly, or after a short retention in detention tanks or outfall pipes (see graphical abstract, supplementary Figure S1). Discharge of untreated CSOs deteriorates the quality of receiving waters, since CSOs contain a variable mixture of rain water, raw sewage, watershed runoff pollutants, variable pathogenic organisms, viruses, cysts, suspended solids, chemicals and floatable materials (USEPA, 1999). In recent years, the effect of CSOs on water bodies used for recreational purpose has caught a lot of attention in Europe. Particularly the dedication from 2002 of Copenhagen harbor for recreational purposes including swimming and water sports has yielded an economically significant added service and tourism industry to the harbor area. Corresponding economic loss when CSO events close the harbor for bathing has inspired construction of significant retention basins which should limit the CSO events frequency, but due to the climate change related increased number of extreme rain events in 2000-2011 20, rain events caused temporary closing of the bathing (NYC Global Partners, 2011).According to European Un...

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Section: Chemical Analysismentioning

confidence: 99%

Section: Concentration Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Chemical disinfection of combined sewer overflow waters using performic acid or peracetic acids

Chhetri

Thornberg²,

Berner³

et al. 2014

Science of The Total Environment

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“…[23][24][25][26][27] ) are routinely used for determining the amount of enzymatically produced peroxycarboxylic acids. Employed chromophores comprise azo-dyes, 23 iodine, 24 or ABTS.…”

Section: Colorimetricmentioning

confidence: 99%

“…4-6 [20][21][22] ), absorbance ( Table 1: no. 7-11 [23][24][25][26][27] ), and fluorescence ( 28 ) detection. Titration methods imply hydrogen peroxide titration followed by a iodometric determination of the peroxycarboxylic acid concentration 17,18 or a direct iodometric determination under acidic conditions.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Assay for Directed Evolution of Perhydrolases

et al. 2012

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Directed evolution offers opportunities to improve promiscuous activities of hydrolases in rounds of diversity generation and high-throughput screening. In this article, we developed and validated a screening platform to improve the perhydrolytic activity of proteases and likely other hydrolases (e.g., lipases or esterases). Key was the development of a highly sensitive fluorescent assay (sensitivity in the µM range) based on 3-carboxy-7-hydroxycoumarin (HCC) formation. HCC is released through an hypobromite-mediated oxidation of 7-(4′-aminophenoxy)-3-carboxycoumarin (APCC), which enables for the first time a continuous measurement of peroxycarboxylic acid formation with a standard deviation of 11% in microtiter plates with a wide pH range window (5-9). As example, subtilisin Carlsberg was subjected to site saturation mutagenesis at position G165, yielding a variant T58A/G165L/L216W with 5.4-fold increased k cat for perhydrolytic activity compared with wild type.

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Analytical and Safety Aspects of Organic Peroxides and Related Functional Groups

Zabicky

2009

Patai's Chemistry of Functional Groups

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Introduction Hydrogen Peroxide Oxidation Indices Hydroperoxides Peroxyacids and their Functional Derivatives Dialkyl Peroxides Ozonides Miscellaneous Functions Bearing the O  O Group Safety Issues Acknowledgments

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Selective Photometric Determination of Peroxycarboxylic Acids in the Presence of Hydrogen Peroxide

Cited by 79 publications

References 11 publications

Chemical disinfection of combined sewer overflow waters using performic acid or peracetic acids

Chemical disinfection of combined sewer overflow waters using performic acid or peracetic acids

Fluorescent Assay for Directed Evolution of Perhydrolases

Analytical and Safety Aspects of Organic Peroxides and Related Functional Groups

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