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在加入选用的阴、阳离子条件下,测定了诺里特活性炭表面的动电电位,选用的离子一般都是澳大利亚西部卡尔古利地区的含金矿石的伴生元素.在不同的pH值的溶液里加入这些离子,引起炭等电点的pH值由4.45变到7～8.3,而阴离子则使等电点pH值小于32.在金氰化物溶液中加入围观离子时,等电点的pH值小于3.2;只有Fe~(3+)离子除外,其等电点的pH为5.9.动电电位的下降[动电电位的下降(减少)指绝对值,以下同一译者注]看起来与平衡离子的存在有关,也许与溶液中存在阳离子的可能会形成的羟塞络离子的吸附有关.诺里特活性炭从含金氰化物溶液中吸附金似乎可以用炭表面的动电电位的数值大小来衡量.文中探讨了金吸附和炭表面动电电位与介质pH值之间的关系.
The electrokinetic potentials on the surface of Norit activated carbon were measured under the selected anion and cation conditions. The selected ions are generally the associated elements of the gold-bearing ores in Kalgoorlie, Western Australia. In different pH solutions The addition of these ions causes the pH of the isoelectric point of the carbon to change from 4.45 to 7 to 8.3 while the anion causes the isoelectric point to have a pH of less than 32. The pH of the isoelectric point when added to the gold cyanide solution is less than 3.2; only with the exception of Fe ~ (3 +) ions, the isoelectric point of the pH is 5.9. Motive potential decline [Motive power potential decline (decrease) refers to the absolute value, the following translator note] May be related to the possible presence of cations in the solution for the adsorption of hydroxyl plug ions.Norritt activated carbon from the gold cyanide-containing solution seems to be adsorbed on the carbon surface by the value of the magnitude of the electrokinetic potential In this paper, the relationship between gold adsorption and the electrokinetic potential of carbon surface and the pH value of the medium is discussed.