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HWAHAK KONGHAK, Vol.24, No.1, 1-8, February, 1986
활성탄에 의한 중금속 시안화물 착음이온의 흡착 특성
Adsorption Characteristics of Cyanide Complex Anion of Heavy Metal on Activated Carbon
초록
금속의 표면처리과정과 유독성 중금속의 제조시설에서 흘러 나오는 시안 및 각종 중금속이온을 동시에 처리하기 위하여 이들의 착물생성 가능성과 그 mechanism을 조사하고, 인공적으로 만든 시안폐수용액에서 중금속 착물이 활성탄에 흡착되는 형태에 대하여 연구한 결과, 수은은 Hg（CN）42-와 Hg(CN)3- 상태로 흡착되고 아연 및 카드뮴은 Zn(CN)42- 및 Cd(CN)42- 로 흡착됨을 알았으며 이러한 관계는 시안이온농도 1.0 × 10-5M-1.0 × 10-1M 범위에서 검토되었다.
The possibility and the mechanism of complex formation have been studied for the simultaneous removal of cyanide and toxic heavy metals from mining and/or electroplating industrial waste water.
Several heavy metal ions were added into a synthesized waste water containing cyanide and were adsorbed on activated carbon forming cyanide complexes, and their adsorption forms were discussed.
It is suggested, in the range of 1.0 × 10-5M to 1.0 × 10-1M CN-, that mercury ion adsorbs as forms of Hg（CN）4-2 and/or Hg(CN)3- whereas zinc and cadmium ions as those of Zn(CN)4-2 and Cd(CN)4-2, respectively.
Several heavy metal ions were added into a synthesized waste water containing cyanide and were adsorbed on activated carbon forming cyanide complexes, and their adsorption forms were discussed.
It is suggested, in the range of 1.0 × 10-5M to 1.0 × 10-1M CN-, that mercury ion adsorbs as forms of Hg（CN）4-2 and/or Hg(CN)3- whereas zinc and cadmium ions as those of Zn(CN)4-2 and Cd(CN)4-2, respectively.