In order to remove heavy metal ions contained in organic squid gut waste, a novel process has been developed with both dilute suluric acid leaching and electrowinning methods. This process was consisted of three procedures, which are the elimination of greasy component in squid gut wastes, the dissolution of heavy metal ions and the electro-deposition of heavy metal ions. Heavy metal ions contained in organic squid gut wastes are zinc, cadmium and copper ions. Heavy metal ions are leached easily in the order of zinc > cadmium > copper in suluric acid solution and are deposited in the order of copper .> cadmium > zinc by electrowinning method. Finally, cadmium and copper ions contained in organic squid gut wastes,could be perfectly removed in the following optimum conditions: the suluric acid concentration is 0.54 mol/l, the electrical voltage 4.5 V , electrical time 3 hours and the treatment temperature 60 ℃.
希硫酸侵出/電解プロセスによる水産系化合物(通称イカゴロ)からの重金属イオンの除去
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