霉菌菌丝球WY对酸性棕染料PR的脱色研究

 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90 r/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，300 mg/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。

Decoloring Effect of Acid Brown Dye PR by Mold Pellet WY

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.