壳聚糖对印染废水吸附性能的研究

Adsorption Performance of Chitosan in Printing and Dyeing Wastewater Treatment

目的研究壳聚糖对印染废水的吸附性能。方法探讨了不同的壳聚糖用量(0～500 mg/L)、pH 值(1～13)、吸附温度(20～50℃)和吸附时间(0.5～2.5 h)对吸附效果的影响。结果在常温下,当 pH 值为2～5时,200mg/L 壳聚糖吸附0.5 h就可以对印染废水中的染料进行很好地吸附,脱色率在90%以上。结论壳聚糖可较好地吸附印染废水中的染料。

Objective To study the adsorption performance of chitosan in printing and dyeing wastewater treatment. Methods The influence factors such as chitosan concentrations（0-500 mg/L）, pH value（ 1-13 ）,temperatures（20-50 ℃） and time（0.5-2.5 h ） were considered in the test. Results When the concentration of chitosan was 200 mg/L, pH value was 2-5,time was 0.5 h and at the room temperature, the absorption could show a good result. The decolorizing rate could reach above 90%. Conclusion The chitosan concentrations, pH value, time and temperature affect the adsorption performance of chitosan in printing and dyeing wastewater treatment.