白腐真菌Ganoderma Sinense对镉和蒽的去除能力

Removal of cadmium and anthracene by white rot fungi Ganoderma Sinensis

重金属和有机物复合污染是水处理中的难题。本研究发现一株白腐真菌Ganoderma Sinensis不仅可以通过富集作用去除重金属镉（Cd）,而且对蒽具有降解能力。当Cd的浓度为10-30 mg/L时,该菌株对Cd的去除率为6.78%-21.9%;当蒽的浓度为10-30 mg/L时,菌株对蒽的降解率为18.25%-33.3%;当Cd和蒽同时存在于培养基中时,随着Cd浓度的增加（10-30 mg/L）,对菌株的生物量及蒽降解的抑制作用也在增大;而随着蒽浓度的增加（10-30 mg/L）,菌株的生物量及Cd的富集能力并未受到显著的影响。实验结果表明,该菌株有望用于镉和蒽复合污染的水体处理。

Combined pollution of heavy metals and organic pollutants is a serious problem in water treatment. This work showed that white rot fungi Ganoderma sinensis could remove cadmium through accumulation and degrade anthracene. Under the conditions of 10—30 mg / L cadmium or anthracene in the medium as the sole contaminant,the removal rate was 6. 78% —21. 9% and 18. 25% —33. 3%,respectively. When cadmium and anthracnene presented in the medium simultaneously,the inhibition for the biomass and anthracnene degradation increased with the rise of cadmium concentration（ 10—30 mg / L）; however,no obvious inhibitory effect on the biomass and cadmium accumulation was observed with the increase of anthracnene concentration（ 10—30 mg /L）. These findings implied that white rot fungi Ganoderma Sinensis might be an alternative in treatment of cadmium and anthracnene polluted wastewater.