【摘要】 在静态条件下,研究了壳聚糖(CHT)对Cr(Ⅵ)的吸附,探讨了CHT吸附Cr(Ⅵ)离子的最佳工艺条件及CHT的再生方法。结果表明,CHT对Cr(Ⅵ)具有较好的吸附性能,吸附的最佳条件是:pH值3～4;废水中Cr(Ⅵ)离子浓度≤60mg/L;吸附时间8～10h。利用CHT处理电镀厂含Cr(Ⅵ)废水,Cr(Ⅵ)离子吸附率达98%以上,且不影响水的本底浓度。更多还原

【Abstract】 The adsorption of Cr(Ⅵ) by chitosan (CHT) was studied under static condition. The optimal conditions of adsorbing Cr(Ⅵ) by CHT and the regeneration methods of CHT were discussed. The results showed that CHT had better adsorbing performance for Cr(Ⅵ) ion. The optimal conditions were that pH was 3～4, the concentration of Cr(Ⅵ) in wastewater was less than 60 mg/L, and the adsorption time was 8～10 h. The treating effect of CHT was good for Cr(Ⅵ) containing wastewater in electroplating works. Cr(Ⅵ) removing rate was above 98% and the method didn’t affect the concentration of solution.更多还原