View : 9 Download: 0

Oxidation of microcystin-LR by the Fenton process: Kinetics, degradation intermediates, water quality and toxicity assessment

Title
Oxidation of microcystin-LR by the Fenton process: Kinetics, degradation intermediates, water quality and toxicity assessment
Authors
Park, Jeong-AnnYang, BoramPark, ChanhyukChoi, Jae-Woovan Genuchten, Case M.Lee, Sang-Hyup
Ewha Authors
박찬혁
Issue Date
2017
Journal Title
CHEMICAL ENGINEERING JOURNAL
ISSN
1385-8947JCR Link

1873-3212JCR Link
Citation
CHEMICAL ENGINEERING JOURNAL vol. 309, pp. 339 - 348
Keywords
Microcystin-LRFenton oxidation processDegradation intermediatesWater quality parametersNak-Dong RiverToxicity assessment
Publisher
ELSEVIER SCIENCE SA
Indexed
SCI; SCIE; SCOPUS WOS
Document Type
Article
Abstract
The Fenton process was assessed as a cost-effective technology for the removal of Microcystin-LR (MC-LR) among UV, UV/H2O2, and Fenton process according to efficiency and electrical energy per order (EE/O). The determined practical concentrations of the Fenton reagents were 5 mg/L Fe(II) and 5 mg/L H2O2, respectively. The Fenton process is a fast reaction, completed within 5-30 min (Fe(II), H2O2 = 0.2-10 mg/L; MC-LR0 = 200 mu g/L). The degradation intermediates of MC-LR by the Fenton process were firstly reported as in/z 1029.5,1011.5, 835.5, 795.4, and 783.4, associated with the diene bond in the Adda chain, then alleviate their toxicity. The effects of organic matter were examined in the range of Nak-Dong River water, as a drinking water source, monitored for six months in 2015. Fulvic acid was affected more than humic acid and natural organic matter (NOM). The degradation efficiency in the raw water was lower than that of distilled water because of the competing effect of NOM, geosmin, and 2-methylisoborneol, and the higher pH (7.64), furthermore, dissolved organic matter, geosmin, and 2-methylisoborneol was removed 7.39%, 4.28% and 12.30% after the Fenton process in the river water. The final concentration of MC-LR after treatment was under the drinking water guideline level with initial MC-LR concentration of 2 mu g/L. No acute toxicity was observed to Daphnia magna (TU = 0) after the Fenton process. (C) 2016 Elsevier B.V. All rights reserved.
DOI
10.1016/j.cej.2016.10.083
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE