摘要
以壳聚糖为原料制备交联壳聚糖吸附剂,并将其用于吸附废水中的Cu2+,考察了交联剂的用量、溶液中Cu2+初始浓度、pH、温度和时间等对交联壳聚糖吸附性能的影响。结果表明,壳聚糖与交联剂的用量比为m(壳聚糖)∶V(甲醛)∶V(戊二醛)=1.5g∶6mL∶4.5mL、溶液pH为6,溶液中Cu2+初始浓度为5mmol/L时吸附效果最佳,且吸附量随着温度升高而增加,吸附表现为吸热过程。
Crosslinked chitosan sorbent was synthesized by using chitosan as raw material,and then usedfor the adsorption of Cu2＋in waste water.Effects of crosslinking agent usage,pH value,initial concentration of Cu2＋ions,reaction temperature and time on adsorption properties of the crosslinked chitosan sorbent were studied.Results showed that when the ratio of chitosan dosage to formaldehyde and glutaraldehyde was 1.5g ∶6mL ∶4.5mL,and the pH value was 6 initial concentration of Cu2＋was 5 mmol/L,under this condition,the crosslinked chitosan sorbent had the best adsorption effect.The adsorbance properties increased with the increasing of temperature and the adsorption behaved as an endothermic process.
出处
《电镀与精饰》
CAS
北大核心
2012年第5期5-7,16,共4页
Plating & Finishing
基金
国家自然科学基金资助项目(51004072)
关键词
交联壳聚糖
吸附
铜离子
crosslinked chitosan
adsorption
Cu2＋ions
