EMAIL THIS PAGE TO A FRIEND

Water research

Development of surrogate correlation models to predict trace organic contaminant oxidation and microbial inactivation during ozonation.


PMID 23062789

Abstract

The performance of ozonation in wastewater depends on water quality and the ability to form hydroxyl radicals (·OH) to meet disinfection or contaminant transformation objectives. Since there are no on-line methods to assess ozone and ·OH exposure in wastewater, many agencies are now embracing indicator frameworks and surrogate monitoring for regulatory compliance. Two of the most promising surrogate parameters for ozone-based treatment of secondary and tertiary wastewater effluents are differential UV(254) absorbance (ΔUV(254)) and total fluorescence (ΔTF). In the current study, empirical correlations for ΔUV(254) and ΔTF were developed for the oxidation of 18 trace organic contaminants (TOrCs), including 1,4-dioxane, atenolol, atrazine, bisphenol A, carbamazepine, diclofenac, gemfibrozil, ibuprofen, meprobamate, naproxen, N,N-diethyl-meta-toluamide (DEET), para-chlorobenzoic acid (pCBA), phenytoin, primidone, sulfamethoxazole, triclosan, trimethoprim, and tris-(2-chloroethyl)-phosphate (TCEP) (R(2) = 0.50-0.83) and the inactivation of three microbial surrogates, including Escherichia coli, MS2, and Bacillus subtilis spores (R(2) = 0.46-0.78). Nine wastewaters were tested in laboratory systems, and eight wastewaters were evaluated at pilot- and full-scale. A predictive model for OH exposure based on ΔUV(254) or ΔTF was also proposed.

Related Materials

Product #

Image

Description

Molecular Formula

Add to Cart

34857
1,4-Dioxane, for HPLC, ≥99.5%
C4H8O2
360481
1,4-Dioxane, ACS reagent, ≥99.0%
C4H8O2
676934
1,4-Dioxane, ACS reagent, ≥99.0%
C4H8O2
33147
1,4-Dioxane, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5% (GC)
C4H8O2
76887
1,4-Dioxane, analytical standard
C4H8O2
D201863
1,4-Dioxane, ReagentPlus®, ≥99%
C4H8O2
CRM48367
1,4-Dioxane solution, certified reference material, 2000 μg/mL in methanol, ampule of 1 mL
C4H8O2
612073
1,4-Dioxane solution, NMR reference standard, 40% in benzene-d6 (99.6 atom % D), chromium(III) acetylacetonate 5 mg/mL, NMR tube size 3 mm × 8 in.
C4H8O2
611905
1,4-Dioxane solution, NMR reference standard, 40% in benzene-d6 (99.6 atom % D), chromium(III) acetylacetonate 5 mg/mL, NMR tube size 5 mm × 8 in.
C4H8O2
551368
1,4-Dioxane solution, NMR reference standard, 40% in benzene-d6 (99.6 atom % D)
C4H8O2
612111
1,4-Dioxane solution, NMR reference standard, 40% in benzene-d6 (99.6 atom % D), NMR tube size 3 mm × 8 in.
C4H8O2
631833
1,4-Dioxane solution, NMR reference standard, 5 mM in benzene-d6 (99.6 atom % D), NMR tube size 3 mm × 8 in.
C4H8O2
631868
1,4-Dioxane solution, NMR reference standard, 5 mM in chloroform-d (99.8 atom % D), NMR tube size 3 mm × 8 in.
C4H8O2
684228
1,4-Dioxane solution, NMR reference standard, 40% in benzene-d6 (99.6 atom % D), NMR tube size 10 mm × 8 in.
C4H8O2
704806
1,4-Dioxane solution, NMR reference standard, 1 mM in D2O ("100", 99.96 atom % D), NMR tube size 5 mm × 7 in.
C4H8O2
704814
1,4-Dioxane solution, NMR reference standard, 10 mM in D2O ("100%", 99.96 atom % D), NMR tube size 5 mm × 7 in.
C4H8O2
704822
1,4-Dioxane solution, NMR reference standard, 0.1 mM in D2O ("100%", 99.96 atom % D), NMR tube size 5 mm × 7 in.
C4H8O2
736171
1,4-Dioxane solution, NMR reference standard, 40% in benzene-d6 (99.6 atom % D), NMR tube size 5 mm × 8 in.
C4H8O2
703354
1,4-Dioxane solution, NMR reference standard, 40% in benzene-d6 (99.6 atom % D), chromium(III) acetylacetonate 5 mg/mL, NMR tube size 6.5 mm × 8 in.
C4H8O2