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用活性炭可从含金溴化物溶液中吸附金。在室温（２０～３５℃）；Ｃ：Ａｕ＝０．７ｇ：１ｍｇ；溶液ｐＨ＜６，溶液中溴化钠浓度小于０．２ｍｏｌ．Ｌ－１；适当搅拌下；吸附４ｈ，金吸附率可达９５％以上。吸附反应为溶液中金扩散过程所控制。－ｄｃ／ｄｔ＝ｋｃ，ｋ≈０．０３５３ｍｉｎ－１。吸附等温线可用朗格缪尔公式表示ｑ＝ｑａｃ／（１＋ａｃ），ｑ≈３３５ｍｇ·ｇ－１，ａ≈０．０５６２Ｌ．ｍｇ－１。金以元素金状态吸附在活性炭上。用离子交换以及金离子在活性炭表面上被还原的反应历程可解释大部分实验现象。
Gold can be adsorbed from the gold bromide solution using activated carbon. At room temperature (20 ~ 35 ℃); C: Au = 0.7g: 1mg; solution pH <6, the concentration of sodium bromide solution is less than 0.2mol. L-1; under proper agitation; adsorption 4h, gold adsorption rate of up to 95%. The adsorption reaction is controlled by the gold diffusion process in the solution. -dc / dt = kc, k≈0.0353 min-1. The adsorption isotherm can be expressed by the Langmuir formula q = qac / (1 + ac), q≈335mg · g-1, a≈0.0562L. mg-1. Gold to elemental gold state adsorption on the activated carbon. Most of the experimental phenomena can be explained by the reaction process with ion exchange and reduction of gold ions on the surface of activated carbon.