Department of Chemical Engineering, Tatung University, Taipei 104, Taiwan.
Bioresour Technol. 2010 Feb;101(4):1127-34. doi: 10.1016/j.biortech.2009.09.055. Epub 2009 Oct 12.
The effects of complexes on the adsorption of copper from citrate solutions using chitosan were investigated. Various copper to citrate ratios and solution pHs were used to determine the copper adsorption capacity on the chitosan and a mathematical model was developed to simulate the copper adsorption process. According to the model, the three parameters influencing the copper adsorption capacity are the fraction of protonated amine groups (RNH(3)(+)), the fraction of anionic copper-citrate complexes (CuL(-) and CuL(2)(4-)), and the fraction of anionic citrate complexes (HL(2-), H(2)L(-), and L(3-)). The copper adsorption capacities onto chitosan at varying copper-citrate ratios and solution pHs can be predicted by the mathematical model. With such a model to facilitate understand the copper adsorption mechanisms at varying copper-citrate ratios and solution pHs, the copper adsorption efficiency can be increased by the adjustment of the copper-citrate ratio and solution pH.
研究了配合物对壳聚糖从柠檬酸盐溶液中吸附铜的影响。使用了不同的铜与柠檬酸盐的比例和溶液 pH 值来确定铜在壳聚糖上的吸附容量，并开发了一个数学模型来模拟铜的吸附过程。根据该模型，影响铜吸附容量的三个参数是质子化胺基的分数（RNH(3)(+)）、阴离子铜-柠檬酸盐配合物的分数（CuL(-) 和 CuL(2)(4-)）和阴离子柠檬酸盐配合物的分数（HL(2-)、H(2)L(-) 和 L(3-)）。通过数学模型可以预测在不同的铜-柠檬酸盐比例和溶液 pH 值下壳聚糖对铜的吸附容量。通过这样的模型来帮助理解在不同的铜-柠檬酸盐比例和溶液 pH 值下铜的吸附机制，可以通过调整铜-柠檬酸盐比例和溶液 pH 值来提高铜的吸附效率。
