竹炭壳聚糖吸附剂的制备及对Cr(Ⅵ)的吸附性能-《电镀与精饰》

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Title:: Preparation of Bamboo Charcoal Chitosan Adsorbent and Its Adsorption Performance for Cr(Ⅵ)

摘要:: 采用竹炭与壳聚糖复配的方法,并以海藻酸钠作为交联剂制备竹炭壳聚糖吸附剂,考察了制备过程中的交联剂种类、原料配比、操作条件及吸附过程中的吸附时间、溶液酸度等对Cr(Ⅵ)吸附性能的影响。结果表明,竹炭壳聚糖比活性炭壳聚糖具有更好的吸附性能;壳聚糖的交联剂对吸附性能的影响不大;当m(竹炭)∶m(壳聚糖)为1∶2,吸附t为30 min,溶液pH为57时,竹炭壳聚糖吸附剂对Cr(Ⅵ)有较好的吸附性能。

Abstract:: Bamboo charcoal chitosan adsorbent was prepared by compounding bamboo charcoal and chitosan and using sodium alginate as crosslinking agent. Influences of the crosslinking agent category,raw material ratio,operating condition,adsorption time and solution acidity on the adsorption performance for Cr( Ⅵ) were investigated. Results showed that the bamboo charcoal chitosan had better adsorption performance than that of active carbon chitosan; the crosslinking agent of chitosan had little effect on adsorption performance; when mass ratio of the bamboo charcoal to chitosan was 1∶ 2,adsorption time was 30 min and pH = 5 ~ 7,the bamboo charcoal chitosan had good adsorption performance for Cr( Ⅵ).