Denitrification by the mix-culturing of fungi and bacteria with shell

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• 作者：Deli Liu ; Shan Zhang ; Yongliang Zheng ; Hirofumi Shoun
• 关键词：Denitrification ; Mixed culture ; Fungi ; Bacteria ; Shell
• 刊名：Microbiological Research
• 出版年：2006
• 出版时间：13 February 2006
• 年：2006
• 卷：161
• 期：2
• 页码：132-137
• 全文大小：177 K

文摘

Denitrification by pure and mixed culture of Fusarium oxysporum and Pseudomonas stutzeri in different mineral medium and in synthetic wastewater were examined. The results obtained revealed that a rapid N₂ evolution by F. oxysporum and P. stutzeri in mineral medium and synthetic wastewater was observed. In co-cultures of F. oxysporum and P. stutzeri, N₂O produced by F. oxysporum was rapidly consumed by P. stutzeri. This indicated that mixed culture of F. oxysporum and P. stutzeri could be used for efficient nitrate and nitrite removal. Using synthetic wastewater, about 87 % of nitrate was reduced by co-denitrification of F. oxysporum and P. stutzeri after incubation for 6 days. In the further denitrification tests, the interaction of shell and mixed culture of F. oxysporum and P. stutzeri was investigated. The dinitrogen was rapidly evolved (442.48 μmol N₂ produced from 1.0 mmol of in 36 h). These results clearly showed that shell provide a suitable microenvironment for P. stutzeri, which is beneficial to the denitrification.