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A Study on the Highly Effective Treatment of Spent Electroless Nickel Plating Solution by an Advanced Oxidation Process

고도산화공정을 이용한 고농도 무전해 니켈도금 폐액 처리방안 연구

  • Seo, Minhye (Advanced Materials & Processing Center, Institute for Advanced Engineering) ;
  • Cho, Sungsu (Advanced Materials & Processing Center, Institute for Advanced Engineering) ;
  • Lee, Sooyoung (Advanced Materials & Processing Center, Institute for Advanced Engineering) ;
  • Kim, Jinho (Inchoen Chemical Co., LTD.) ;
  • Kang, Yong-Ho (Inchoen Chemical Co., LTD.) ;
  • Uhm, Sunghyun (Advanced Materials & Processing Center, Institute for Advanced Engineering)
  • 서민혜 (고등기술연구원 신소재공정센터) ;
  • 조성수 (고등기술연구원 신소재공정센터) ;
  • 이수영 (고등기술연구원 신소재공정센터) ;
  • 김진호 (인천화학(주)) ;
  • 강용호 (인천화학(주)) ;
  • 엄성현 (고등기술연구원 신소재공정센터)
  • Received : 2015.02.03
  • Accepted : 2015.03.12
  • Published : 2015.06.10

Abstract

We develop advanced oxidation processes for the treatment of spent electroless nickel plating solution. Apart form recovering nickel by leaching and enrichment, more emphasis is placed on rendering the waste water recyclable via oxidizing phosphite and hypophosphite into phosphate which can then be precipitated easily. $UV/H_2O_2$ process is employed and the conversion efficiency of COD and $PO_4-P$, and $H_2O_2$ consumption are analyzed. Furthermore, the $UV/H_2O_2/O_3$ process in conjunction with $O_3$ generator enables us to not only save the treatment time by 6 hours but also reduce $H_2O_2$ consumption by 30%.

Keywords

spent electroless nickel plating solution;advanced oxidation process;photo-chemical method;chemical oxygen demand;phosphate

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