게르마늄의 중금속(납, 구리, 카드뮴)에 대한 흡착특성
A Study on Characteristics of Adsorption of Germanium for Heavy Metals
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Abstract
The adsorption behavior of heavy metals such as lead, copper, and cadmium on germanium in aqueous solution was studied. The important parameters of metal adsorption on germanium are adsorbent amounts, pH range, reaction time and mixing, temperature, and ionic strength. Germanium had good adsorption efficiency on lead at pH 7.0 and 30 minutes of reaction time. Generally the more adsorbent quantity led to the higher adsorption. On the other hand, the maximum adsorption efficiencies of germanium were obtained at pH 7.0 for lead, at pH 8.0 for cadmium, at pH 9.0 for copper, respectively. Finally, ionic binding strength was increasing with atomic valence: the higher atomic valence led to the higher adsorption efficiency.
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