空心莲子草吸附钴离子前后溶液pH值的变化及其红外光谱研究

用PH计和红外光谱研究了空心莲子草对Co(NO3)2的生物吸附特性，发现空心莲子草对Co^2 具有有较强的吸附能力，在达到饱和吸附前，其吸附量随Co^2 的起始浓度的增加而增加，吸附前的PH值及红外光谱表明；在吸附过程中，羟基和氨基起重要作用，Co^2 与生物材料中的氢（可能是羟基氨）发生了交换，且化学吸附和物理吸附同时起作用。

Study on pH Value Change of Solutin and Infrared(IR) Spectrum Before and After Alternanthera Philoxeroides Absorbed Cobalt Ion

The feature of which Alternanthera philoxeroides of determination as the biosorbent of Co(No 3) 2 is studied through pH value and infrared(IR) spectrum. It was discovered that Alternanthera philoxeroides has thickness strong absorption ability to Co 2+ ion, and the absorption amount increased with the initial thickness of Co 2+ ion increased before absorption Gels saturation. The pH value before and after absorption and IR spectrum indicated that hydroxyl group and acyl-amino group play important roles during biosorption, Co 2+ ion changes with the hydrogen It is probable that the hydrogen was hydrogen of hydroxyl group of biological material. Moreover, the chemical absorption and physical absorption happened at the same time.