摘要
麦杆、荞麦皮、锯末、稻壳等含约35%～50%的纤维素[1,2]. 目前大多被农民烧掉,污染环境,浪费了资源. Hwang等[3]研究了由纤维素制备的吸附剂对染料废水的处理. Maeda等[4]报道了纤维素粉末阴离子交换剂对阴离子染料的吸附,其吸附容量为活性炭的50～150倍. 古田等[5]利用棉纱纤维和丙烯酰胺接枝共聚,制成弱阴离子交换剂,研究了它对阴离子染料的脱色性能. 虽然有关纤维素季铵盐衍生物的制备已有报道[6],但农副产品纤维素强阴离子交换剂的制备未见报道. 我们用麦杆、荞麦皮、锯末、稻壳的纤维素为基质,采用醚化后季铵化的方法制备了强阴离子交换剂,测定了吸附和再生性能,发现其对印刷厂染料废水有良好的脱色效果.
Cellulose strong anion exchangers(CSAE) were prepared from cellulose of wheat-straw, sawdust, buckwheat husk and rice husk. Exchange capacity of the exchangers was 0.8~0.6 mmol/g. The static and dynamic absorption capacities for dye Direct Light Turquoise GL were 181~192 mg/g and 179~197 mg/g, respectively. Good results in decolorization of printing wastewater were obtained.
出处
《应用化学》
CAS
CSCD
北大核心
2002年第12期1192-1193,共2页
Chinese Journal of Applied Chemistry
