Evaluation of dynamic behavior of coagulation-flocculation using hydrous ferric oxide for removal of radioactive nuclides in wastewater

김광욱; 손우정; 오맹교; 양다솜; Richard I. Foster; 이근영

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자료유형: 학술저널

저자정보: 김광욱 손우정 오맹교 양다솜 Richard I. Foster 이근영

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제51권 제3호

발행연도: 2019.1

수록면: 738 - 745 (8page)

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Coprecipitation using hydrous ferric oxide (HFO) has been effectively used for the removal of radionuclidesfrom radioactive wastewater. This work studied the dynamic behavior of HFO floc formationduring the neutralization of acidic ferric iron in the presence of several radionuclides by using aphotometric dispersion analyzer (PDA). Then the coagulation-flocculation system using HFO-anionicpoly acrylamide (PAM) composite floc system was evaluated and compared in seawater and distilledwater to find the effective condition to remove the target nuclides (Co-60, Mn-54, Sb-125, and Ru-106)present in wastewater generated in the severe accident of nuclear power plant like Fukushima Daiichicase. A ferric iron dosage of 10 ppm for the formation of HFO was suitable in terms of fast formation ofHFO flocs without induction time, and maximum total removal yield of radioactivity from the wastewater. The settling time of HFO flocs was reduced by changing them to HFO-PAM composite floc. Theoptimal dosage of anionic PAM for HFO-anionic PAM floc system was approximately 1e10 ppm. The totalremoval yield of Mn-54, Co-60, Sb-125, Ru-106 radionuclides by the HFO-anionic PAM coagulationflocculationsystem was higher in distilled water than in seawater and was more than 99%

참고문헌 (34)

참고문헌 신청

J. Bratby / 2008 / Coagulation and Flocculation in Water and Wastewater Treatment / IWA publishing

F. Pang / 2009 / Heavy metal removal by hydroxide precipitation and coagulation-flocculation methods from aqueous solutions / Water Qual. Res. J. Can 44(2):174~182

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D. Hobbs / 1999 / Precipitation of uranium and plutonium from alkaline salt solutions / Nucl. Tech 128:103~112

A. Baeza / 2004 / Elimination of man-made radionuclides from natural wasters by applying a standard coagulation-flocculation process / J. Radioanal. Nucl. Chem 260(2):321~326

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