D751大孔亚氨基二螯合树脂

D751大孔亚氨基二螯合树脂

D751是一个大孔聚苯乙烯基于螯合树脂，用设计用于除去从工业废水中重金属阳离子的亚氨基二基。 这些阳离子可以选自高浓度的一价阳离子（通常为钠），也从共用的二价阳离子（如钙）的分离。 去除可以既从根据金属被除去弱酸性和弱碱性溶液来实现。

D751认定在用于从矿石，电镀溶液，酸洗液，和污水提取金属和恢复过程，即使在碱土金​​属（钙和镁）的存在下使用。 进一步重要的用途包括过渡金属和贵金属和用于清洁和各种有机或无机化学品提纯的盐溶液的除去重金属污染（通常从水溶液）的精炼。

应用： D751是特别适合于去除重金属（如弱酸性螯合络合物），其根据选择性的以下顺序保持。 铜））Ni）的Zn³Co³Cd）的Fe（Ⅱ））的Mn）钙
大孔树脂结构保证了出色离子从而提供高效的疲惫和再生的扩散。

恢复从电镀工业废水的重金属是通过集中实现，就是完全脱盐和回收冲洗水不被实行特别有用。 最简单的情况是，其中只有一种重金属的存在，当漂洗水的量低时，废水的费用可能是低的，而且原水具有低的盐含量。

D751可以用来减少残留有毒重金属到低于最大容许浓度水平这往往远低于那些沉淀反应后得到的。 它也可用于去除软化水漂洗水电路类似残差。

D751也被用于分离和浓缩在湿法冶金工艺重金属（选矿和废料回收）。 它特别适用于其中的金属是存在于低浓度。 分离技术可以根据选择性的上面给定的顺序进行。 然而变化序列中发生变化的pH值和在特定阴离子（包括较高浓度的氯化物和硫酸盐）的存在。 以上给出的序列适用于中性和弱酸性的解决方案。

D751 Macroporous Iminodiacetic Chelating Resin

D751 Macroporous Iminodiacetic Chelating Resin

D751 is a macroporous polystyrene based chelating resin, with iminodiacetic groups designed for the removal of cations of heavy metals from industrial effluents. These cations may be separated from high concentrations of univalent cations (typically sodium) and also from common divalent cations (such as calcium) . Removal can be achieved both from weakly acidic and weakly basic solutions depending on the metals to be removed.

D751 finds use in processes for extraction and recovery of metals from ores, galvanic plating solutions, pickling baths, and effluents even in the presence of alkaline earth metals (calcium and magnesium) . Further important uses include the refining of the salt solutions of transition and precious metals and for the cleaning and purification of various organic or inorganic chemical products by removal of heavy metals contamination (usually from aqueous solution) .

APPLICATION: D751 is particularly suitable for the removal of heavy metals (as weakly acidic chelated complexes) which are held according to the following order of selectivity. Cu) ) Ni) Zn³Co³Cd) Fe (ll) ) Mn) Ca
The macroporous resin structure ensures excellent diffusion of ions thus affording efficient exhaustion and regeneration.

Recovery of heavy metals from effluents from the plating industry is achieved by concentration and is particularly useful where full demineralisation and recycling of the rinse water is not practised. The simplest case is where only one heavy metal is present, when volumes of rinse water are low, waste water fees may be low, and raw water has a low salt content.

D751 can be used to reduce residual toxic heavy metals to below the maximum admissible concentration levels which are often far below those obtainable after precipitation reactions. It may also be used to remove similar residuals from demineralised rinse water circuits.

D751 is also used to separate and concentrate heavy metals in hydrometallurgical processes (ore dressing and scrap recovery) . It is particularly suitable where metals are present in low concentrations. Separation techniques may be carried out according to the order of selectivity given above. However changes in the sequence occur with change in pH and in the presence of certain anions (including higher concentrations of chloride and sulphate) . The sequence given above is applicable for neutral and weakly acidic solutions.