Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Comparison of the characteristics of Al(III) hydrolyzed species by improved ferron assay test

개선된 Ferron 분석 비교를 통한 Al(III) 가수분해종 특성 연구

  • Yoon, Mihyoung (Department of Environmental Engineering, Pukyong National University) ;
  • Kang, Limseok (Department of Environmental Engineering, Pukyong National University)
  • 윤미형 (부경대학교 환경공학과) ;
  • 강임석 (부경대학교 환경공학과)
  • Received : 2022.05.04
  • Accepted : 2022.06.17
  • Published : 2022.06.15
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Abstract

In this study, newly improved Ferron assay test haved on timed spectrometry was used for the determination of hyolrolytic Al species presented in PACl coagulant. The color development reagent ferron was prepared by using conventional method and two newly developed methods. Then the ferron assay test was used to compare and analyze the distribution of Al(III) hydrolyzed species presented in the prepared PACl and alum. The preparing method of reagent A required an aging period of 7 days by adding a hydroxylamine hydroxide and a 1,10-phenanthroline monohydrate reagent, whereas the preparing method of reagent B was used as a coloring agent immediately without aging time. The regression analysis between UV absorbance and Al concentrations of conventional method and newly developed method of ferron reagents in low-concentration aluminum solutions and high-concentration aluminum solutions, showed the correlation coefficients of 0.999 or higher, as showing high correlations of conventional method and newly developed method. Applying Ferron assay test, Al species in the PACls and alum were classified as Ala(monomeric Al), Alb (polymeric Al), and Alc (colloidal and precipitated Al). Distribution of Al(III) hydrolyzed species according to the preparation of ferron colorimetric reagents was similar.

Keywords

Acknowledgement

본 연구는 부경대학교 자율창의학술연구비(2022년)에 의하여 연구되었습니다.

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