摘要
为了降低饮用水源中的残余铝含量,使用壳聚糖与羧甲基壳聚糖分别做静态吸附实验。考察了壳聚糖与羧甲基壳聚糖用量、溶液pH和振荡时间对水中铝离子去除率的影响。结果表明,壳聚糖用量为0.2 g,溶液水样pH为9.0,振荡50 min时,对水中铝离子的去除率只能达到40%;羧甲基壳聚糖用量为0.1 g,溶液水样pH为7.0,振荡20 min寸,对水中铝离子的去除率可达到95%以上。由于壳聚糖为纯天然物质,不会对水体造成二次污染,因此由壳聚糖改性处理制备的羧甲基壳聚糖是一种新型环保水处理材料,具有广泛的应用前景。
Static adsorption experiments were done using the chitosan and carboxymethyl chitosan to reduce the content of residual aluminum in the raw drinking water. The effects of dosage of chitosan and carboxymethyl chitosan, pH value and surge time on the removal rate of Al^3＋ were studied. The results showed when the dosage of chitosan was 0.2 g, the pH value of water sample was 9.0 and the surge time was 50 minutes, the remoral rate of Al^3＋ was 40% only ; when the dosage of carboxymethyl chitosan was 0.1 g, the pH value of water sample was 7.0 and the surge time was 20 minutes, the removal rate of Al^3＋ was more than 95%. Chitosan did not cause secondary pollution carboxymethyl chitosan prepared from material and had a broad prospect. of water bodies as it was chitosan was a new type of the natural substances. environmentally friendly Therefore, the water - treating
出处
《精细石油化工进展》
CAS
2009年第3期45-47,共3页
Advances in Fine Petrochemicals
关键词
残余铝含量
羧甲基壳聚糖
去除率
壳聚糖
residual aluminum content, carboxymethyl chitosan,removal rate
