Effects of total suspended solids, particle size, and effluent temperature on the kinetics of peracetic acid decomposition in municipal wastewater.

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ID: 105069
2019
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Abstract
In this study, the influence of total suspended solids (TSS) and particle size as well as effluent temperature on peracetic acid (PAA) decomposition kinetics in municipal wastewater was investigated. PAA decomposition was best described following second order kinetics in primary effluent (PE) and first order kinetics in secondary effluent (SE) samples. For synthetic samples prepared by varying TSS levels, PAA demand increased on average by about 0.042 mg/L in PE and 0.034 mg/L in SE for every 10 mg/L increase in TSS. Similarly, the PAA decay rate constant in these samples increased at a rate of 0.0014 L/mg.min and 0.00039 min, respectively, per 10 mg/L TSS. To examine the effect of particle size, synthetic samples with narrow size fractions (20-45, 45-75, and 75-90 μm) were prepared. It was found that samples with smaller particle size fractions had a greater PAA demand and decay rate constant. Effluent temperature also enhanced the PAA decomposition rate with the calculated activation energies for PE and SE samples being 29,980 J/mol and 34,860 J/mol, respectively.
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amerian2019effectswater Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Amerian, Tasnim;Farnood, Ramin;Sarathy, Siva;Santoro, Domenico;
Journal water science and technology : a journal of the international association on water pollution research
Year 2019
DOI
10.2166/wst.2020.047
URL
Keywords
temperature lactobacillus plantarum ensiling microbial community dynamics cauliflower leaf

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