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首页> 外国专利> METHOD FOR SEPARATING AND REMOVING HEAVY METAL FROM VISCERA OF FISH AND SHELLFISHES AND METHOD FOR RECOVERING HEAVY METALS

METHOD FOR SEPARATING AND REMOVING HEAVY METAL FROM VISCERA OF FISH AND SHELLFISHES AND METHOD FOR RECOVERING HEAVY METALS

机译：从鱼和壳类鱼类中分离和去除重金属的方法以及回收重金属的方法

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摘要

PROBLEM TO BE SOLVED: To efficiently separate, remove and recover heavy metals represented by Cd by immersing the viscera of fish and shellfishes into dilute sulfuric acid to elute the heavy metals and bringing the eluate into contact with cation exchange resins. SOLUTION: The viscera of the fish and shellfishes and more particularly the internal organs of scallops are immersed into the dilute sulfuric acid and the liquid is stirred to elute the heavy metals and more particularly Cd into the liquid; thereafter, the eluate is fed into a column packed with the cation exchange resins to bring the liquid into contact with the cation exchange resins, by which the heavy metals are removed from the eluate. Further, the cation exchange resins in which the heavy metals are thickened and accumulated are brought into contact with an acid to reverse extract the heavy metals. The extracting liquid is electrolyzed, by which the heavy metals are recovered. As a result, the heavy metals are almost completely removed and, therefore, the reutilization of the residual viscera of the fish and shellfishes as a protein resource is possible. Strongly acidic cation exchange resins are preferably used as the cation exchange resins so as to withstand the use in the dilute sulfuric acid soln.
机译：解决的问题：通过将鱼和贝类的内脏浸入稀硫酸中以洗脱重金属并使洗脱液与阳离子交换树脂接触，以有效分离，去除和回收以Cd表示的重金属。解决方案：将鱼和贝类的内脏，尤其是扇贝的内脏浸入稀硫酸中，搅拌液体以洗脱重金属，尤其是将Cd溶出;此后，将洗脱液送入装有阳离子交换树脂的塔中，以使液体与阳离子交换树脂接触，由此从洗脱液中除去重金属。此外，使其中重金属增稠并积累的阳离子交换树脂与酸接触以逆向提取重金属。电解提取液，从而回收重金属。结果，重金属几乎被完全去除，因此，鱼类和贝类的残留内脏作为蛋白质资源的再利用是可能的。为了承受在稀硫酸溶液中的使用，优选使用强酸性阳离子交换树脂作为阳离子交换树脂。

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