镰刀菌HJ01对苯酚的降解性能

Degradation Capability of Fusarium sp. HJ01 on Phenol

为了研究真菌对苯酚的降解能力,采用本实验室分离的一株镰刀菌HJ01,考察了外加碳源、降解体系初始pH、温度对HJ01菌体生长量和苯酚降解效果的影响,初步探讨了镰刀菌降解苯酚的动力学与机理。实验结果表明,该菌能以苯酚为惟一碳源生长,添加适量的蔗糖可促进HJ01菌体的生长及苯酚的降解。在蔗糖加入量为3g/L、降解体系初始pH为6.0、温度为30℃的最佳条件下,经HJ01菌处理4d后的质量浓度为420mg/L苯酚废水中的苯酚完全降解。镰刀菌的生长和苯酚降解动力学符合Andrews模型。

To study the degradation capability of fungi on phenol, a strain Fusarium sp. isolated in our own laboratory was used to investigate the effects of additional carbon source, initial pH of the degradation system and temperature on fungi growth and phenol degradation. The kinetics and mechanism of phenol biodegradation were explored. The experimental results show that this strain can grow with phenol as the only carbon source, and an amount of sucrose can stimulate the growth of HJ01 and enhance the degradation velocity of phenol. Under the optimum conditions of sucrose dosage 3 g/L, initial pH of degradation system 6.0 and 30 ℃, phenol in the wastewater with initial mass concentration 420 mg/L can be degraded totally after treated with HJ01 for 4 days. The growth of Fusarium sp. HJ01 and the degradation kinetics of phenol accord with Andrews models.