当前位置: 首页 > 文章 > 白腐真菌对造纸黑液中木质素的降解效果 西北农林科技大学学报(自然科学版) 2009 (12) 200-206
Position: Home > Articles > Study on factors influencing the degradation of lignin in black liquor by white-rot fungus Journal of Northwest A & F University(Natural Science Edition) 2009 (12) 200-206

白腐真菌对造纸黑液中木质素的降解效果

作  者:
李海红;龚文姣;同帜;王颖
单  位:
西安工程大学环境与化学工程学院陕西省现代建筑设计研究院;西安工程大学环境与化学工程学院;陕西师范大学旅游与环境学院西安工程大学环境与化学工程学院西安市环境保护科学研究院
关键词:
白腐真菌;木质素;生物降解;造纸黑液
摘  要:
【目的】应用白腐真菌处理造纸黑液,探讨白腐真菌对造纸黑液中木质素的降解效果及其影响因子,确定最佳降解条件。【方法】从自然界腐朽木材上分离培养白腐真菌,利用专用培养基对其进行分离和纯化,分析木质素溶液质量浓度(污染负荷)、pH值、搅拌速度、碳源和氮源质量浓度、[Fe2+]质量浓度对白腐真菌降解木质素效果的影响。【结果】确定白腐真菌降解造纸黑液中木质素的最佳条件为:木质素质量浓度为153.0 mg/L,pH值为5,搅拌速度为250 r/min,葡萄糖质量浓度为1 g/L,酒石酸铵质量浓度为0.20 g/L,[Fe2+]质量浓度为0.08 mg/L。【结论】得到了白腐真菌降解造纸黑液中木质素的最佳条件,在此条件下白腐真菌对木质素的降解率最高可达64.38%。
译  名:
Study on factors influencing the degradation of lignin in black liquor by white-rot fungus
作  者:
LI Hai-hong1,GONG Wen-jiao1,TONG Zhi1,WANG Ying2(1 School of Environmental & Chemical Engineer,Xi'an Polytechnic University,Xi'an,Shaanxi 710048,China;2 Environmental Impact Assessment Institute,Shaanxi Modern Architecture Design & Research Institute,Xi'an,Shaanxi 710000,China)
关键词:
white-rot fungus;lignin;biodegradable;degradation of black liquor
摘  要:
【Objective】 The study chose the white-rot fungus to process black liquor to explore the degradability and the influence factors of white-rot fungus on lignin of black liquor.【Method】 Special culture medium was used to separate and purify white-rot fungus which had been separated from the rotten wood and cultured.The influence of degradation was analyzed by the following ingredients:lignin consistency,pH value,stirring speed,consistency of carbon and nitrogen source,and Fe2+ consistency,so as to choose the best conditions of white-rot fungi for degradation.【Result】 The best condition of degrading black liquor is determined:lignin=153 mg/L,pH=5,the rotating speed is 250 r/min,glucose=1 g/L,ammonium tartrate=0.20 g/L,Fe2+=0.08 mg/L.【Conclusion】 The best degradation conditions in which white-rot fungus degrade black liquor are obtained.Under these conditions,the degradation rate of white-rot fungus is up to 64.38%.

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