霉菌菌丝球WY对酸性棕染料PR的脱色研究

Decoloring Effect of Acid Brown Dye PR by Mold Pellet WY

研究了霉菌菌丝球WY对酸性棕染料PR的脱色性能及对实际印染废水的脱色作用。WY的脱色温度范围较宽，在25-50℃范围内，其脱色率均在92％以上。菌球WY的最佳脱色温度为45℃，在此温度时，PR的脱色率达97．92％。菌球WY的最佳脱色pH值为5．0、最佳摇速为90r／min，PR的相应脱色率分别达93．73％和92．45％。染料浓度在100-300mg／L范围内，WY对PR具有明显的去除活性，300mg／L时，其去除率达88．71％。菌球WY对染料PR的脱色需要一定的营养。WY对PR脱色所需碳源和氮源范围都较宽。废牛奶可作为WY的良好营养，在省去碳源和氮源的培养基中按2％和10％加入废牛奶制备的菌丝球，对PR的脱色率分别达75．94％和98．06％。WY对实际印染废水有较好的脱色作用，脱色率为86．24％。甲醇对PR具有很好的解吸效果，其解吸率达97．17％。解吸后的菌球对染料仍有很好的脱色作用，其脱色率达93．78％，菌球可重复利用。

Mold pellet WY was studied on its decoloring characteristics of acid brown dye PR and effect of real printing and dyeing wastewater. WY had a wider decoloring temperature range. In the range of 25 - 50 ℃, the decoloring rate of PR was over 92%. The optimum decoloring temperature of pellet WY was 45 ℃, where the decoloring rate of PR reached 97.92% . The optimum pH of pellet WY was 5.0 and the optimum shaking speed was 90r/min and the corresponding decoloring rate of PR was 93.73% and 92. 45% respectively. In the range of dye concentration of 100 - 300 mg/L, WY had high removal activity of dye PR and the removal rate reached 88.71%. Pellet WY needed some nutrition for the decoloration of PR WY had a wider range of carbon sources and nitrogen sources for the decoloration of PR. Waste milk was used as a nice nutrition for WY. The decoloring rate of milk-made pellet WY for PR. was 75.94% and 98.06% respectively when waste milk was added at 2% and 10% to the culture without carbon and nitrogen sources. Pellet WY had better decoloring activity for real printing and dyeing wastewater, with decoloring rate 86. 24%. Methanol had good desorption effect with desorption rate 97. 17%. After desorption, the pellet still had good decoloring effect and the decoloring rate was 93.78%. Pellet WY could be reused.