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Optimization of photolysis of diclofenac using a response surface methodology

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dc.contributor.authorIm, Jong-Kwon-
dc.contributor.authorKim, Moon-Kyung-
dc.contributor.authorZoh, Kyung-Duk-
dc.creator조경덕-
dc.date.accessioned2013-10-10T01:27:01Z-
dc.date.available2013-10-10T01:27:01Z-
dc.date.issued2013-02-15-
dc.identifier.citationWater Science & Technology Vol.67 No.4, pp. 907-914-
dc.identifier.issn0273-1223-
dc.identifier.urihttps://hdl.handle.net/10371/83604-
dc.description.abstractThis study investigates the effects of environmental parameters such as UV intensity (X-1, 2.1 similar to 6.3 mW/cm(2)), Fe(III) (X-2, 0 similar to 0.94 mg/L), NO3- (X-3, 0 similar to 20 mg/L) and humic acid (X-4, 0 similar to 30 mg/L) on the removal efficiency of diclofenac (DCF, Y), and optimization using a response surface methodology (RSM) based on Box-Behnken design (BBD). According to analysis of variance and t-test results (p < 0.001), the proposed quadratic BBD model based on a total of 29 experimental runs fitted well to the experimental data. Moreover, the determination coefficient (R-2 = 0.990) and adjusted determination coefficient (R-a(2) = 0.981) indicated that this model is adequate with a high goodness-of-fit. Variables of X-1, X-2 and X-3 had significant positive contributions (p < 0.001), while X-4 had significant negative contribution to the DCF removal (p < 0.001). A Pareto analysis showed that X-4 was the most important factor (57.18%) in DCF photolytic removal. The predicted and observed DCF removal were 94.98 and 94.2% under optimal conditions (X-1 = 6.29 mW/cm(2), X-2 = 0.75 mg/L, X-3 = 15.65 mg/L and X-4 = zero), respectively. The RSM not only gives valuable information on the interactions between these photoreactive species (UV intensity, Fe(III), NO3-, and humic acid) that influence DCF removal, but also identifies the optimal conditions for effective DCF removal in water.en
dc.description.sponsorshipThis work was supported by the National Research
Foundation of Korea (NRF) grant funded by the Korean
Government (MEST) (No. 2010-0014222).
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dc.language.isoenen
dc.publisherIWA Publishingen
dc.subject복합학en
dc.subjectBox-Behnken design-
dc.subjectdiclofenac-
dc.subjecthumic acid-
dc.subjectiron(lll)-
dc.subjectnitrate-
dc.subjectphotolysis-
dc.titleOptimization of photolysis of diclofenac using a response surface methodologyen
dc.typeArticle-
dc.author.alternative조경덕-
dc.author.alternative임종권-
dc.author.alternative김문경-
dc.identifier.doi10.2166/wst.2012.634-
dc.citation.journaltitleWater Science & Technology-
dc.description.srndOAIID:oai:osos.snu.ac.kr:snu2013-01/102/0000005866/2-
dc.description.srndSEQ:2-
dc.description.srndPERF_CD:SNU2013-01-
dc.description.srndEVAL_ITEM_CD:102-
dc.description.srndUSER_ID:0000005866-
dc.description.srndADJUST_YN:Y-
dc.description.srndEMP_ID:A072570-
dc.description.srndDEPT_CD:903-
dc.description.srndCITE_RATE:1.122-
dc.description.srndFILENAME:첨부된 내역이 없습니다.-
dc.description.srndDEPT_NM:환경보건학과-
dc.description.srndEMAIL:zohkd@snu.ac.kr-
dc.description.srndSCOPUS_YN:N-
dc.description.srndCONFIRM:Y-
dc.identifier.srnd2013-01/102/0000005866/2-
Appears in Collections:
Graduate School of Public Health (보건대학원)Dept. of Environmental Health (환경보건학과)Journal Papers (저널논문_환경보건학과)
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