交联羧甲基壳聚糖对镁的吸附性能研究

讨论了交联羧甲基壳聚糖对Mg2+的吸附作用,探讨了溶液的pH值、吸附时间、温度等因素对其吸附性能的影响。实验表明,在pH值为4~5时,交联羧甲基壳聚糖对Mg2+的吸附性能很好,吸附率可达95%以上,饱和吸附容量为96.7 mg/g,且具有良好的重复使用性能,在线性范围内方法的相对标准偏差为8.1%。

Study of Magnesium Adsorption on Crosslinked Carboxymethyl Chitosan

The adsorption behavior of magnesium on crosslinked carboxymethyl chitosan was studied.The effects of various factors,such as pH value,reaction time,temperature and concomitant elements,on the adsorption behavior of magnesium were investigated.The experimental results showed that the adsorption efficiency of crosslinked carboxymethyl chitosan was optiumal at pH 4~5.The highest adsorption efficiency is 95%.Crosslinked carboxymethyl chitosan can be used for three times with high adsorption capacity.The saturated adsorption capacity of crosslinked carboxymethyl chitosan is 96.7mg/g and the relative standard deviation of this method is 8.1%.