活性炭による微量カドミウム錯イオンの吸着特性
1977 年 93 巻 1072 号 p. 441-446
詳細
1977 年 93 巻 1072 号 p. 441-446
Cadmium (II) reacts with an aqueous ammonia to form a hexa-ammine cadmium complex which is easily adsorbed on active charcoal by a butch method. The cadmium adsorbed on active charcoal is almost recovered rapidly by the shaking with a small quantity of 1M hydrochloric acid, the active charcoal could be reused as a regenerated charcoal.
Under the column method has been employed on the same concentration of cadmium solution which is used on butch method, the cadmium ion is completely adsorbed from an ammoniacal solution at pH 11.
The effects of the organic substance accompanying with cadmium ion examined about the aqueous solution of 10-4M EDTA, 10-2M glycine, 3×10-3M n-octhyl alcohol and 5×10-4M methylorange. The competitions occured between an aqueous ammonia and other complex agents such as EDTA or glycine. The concomitance effect would be observed between ammine cadmium complex and methylorange.
