In:
Water Environment Research, Wiley, Vol. 83, No. 8 ( 2011-08), p. 684-691
Abstract:
This study investigated the removal of parabens, N,N‐diethyl‐m‐toluamide (DEET), and phthalates by ozonation. The second‐order rate constants for the reaction between selected compounds with ozone at pH 7 were of (2.2 ±0.2) × 10 6 to (2.9 ±0.3) × 10 6 M −1 /s for parabens, (2.1 ± 0.3) to (3.9 ±0.5) M −1 /s for phthalates, and (5.2 ±0.3) M −1 /s for DEET. The rate constants for the reaction between selected compounds with hydroxyl radical ranged from (2.49 ±0.06) × 10 9 to (8.5 ±0.2) × 10 9 M −1/ s. Ozonation of selected compounds in secondary wastewater and surface waters revealed that ozone dose of 1 and 3 mg/L yielded greater than 99% depletion of parabens and greater than 92% DEET and phthalates, respectively. In addition, parabens were found to transform almost exclusively through the reaction with ozone, while DEET and phthalates were transformed almost entirely by hydroxyl radicals (·OH).
Type of Medium:
Online Resource
ISSN:
1061-4303
,
1554-7531
DOI:
10.2175/106143011X12989211841179
Language:
English
Publisher:
Wiley
Publication Date:
2011
detail.hit.zdb_id:
1098976-6
detail.hit.zdb_id:
2051010-X
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