摘要
为了丰富壳聚糖骨架上的活性吸附位点,对壳聚糖进行交联改性,并将其和聚合氯化铝铁复合使用来吸附Cr3+。实验以Cr3+的去除率为考察指标,研究了聚合氯化铝铁/交联壳聚糖的质量比、吸附剂投加量、吸附时间、吸附温度、pH等因素对吸附效果的影响,最后通过正交实验优化了吸附工艺,得最佳吸附参数为:聚合氯化铝铁-交联壳聚糖质量比1∶2、投加量7 g、pH=8、吸附时间70 min、吸附温度35℃,此条件下的吸附效果最好,Cr3+的吸附率达96.934%。
The chitosan was cross-linked to increase the active adsorption site on the chitosan, andthen used to adsorb Cr3＋in combination with polyaluminum ferric chloride. In the experiment, theremoval rate of Cr3＋was taken as the index, and the effects of the mass ratio of polyaluminum ferricchloride/crosslinked chitosan, the dosage of adsorbent, the adsorption time, the adsorption temperatureand pH on the adsorption were studied. The adsorption parameters were optimized by orthogonalexperiment as follows： the mass ratio of polyaluminum ferric chloride-crosslinked chitosan of1∶2, thedosage of 7 g, pH = 8, the adsorption time of 70 min, the adsorption temperature of 35℃, theadsorption effect was the best under these conditions, which reached to 96.934%.
出处
《皮革与化工》
CAS
2018年第1期1-4,35,共5页
Leather And Chemicals
关键词
交联壳聚糖
聚合氯化铝铁
吸附
CR^3+
cross-linking chitosan
polyaluminum ferric chloride
adsorption
Cr3＋
