Removal of inorganic nitrogen sources from water by the algal biofilm of the aerial microalga Trentepohlia aurea
Removal of inorganic nitrogen sources from water by the algal biofilm of the aerial microalga Trentepohlia aurea
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DOI：
10.1023/a:1023657310004
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发表时间：
2003-04-01
影响因子：
4.1
通讯作者：
Hirano, M
中科院分区：
文献类型：
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作者：
Abe, K;Matsumura, I;Hirano, M
在间歇式系统中，研究了生长在滤纸等基质表面的气生微藻Trentpohlia aurea对无机氮源的去除作用。当藻类生长在受潮的纸上时，它会主动摄取培养基中的无机含氮化合物。在本研究中，滤纸上的固定化细胞被称为藻类生物膜。在改良Bold‘s基本培养基中(以1gNH4ClL(-1)为氮源)，藻类生物膜在40d内对氨氮L(-1)的去除效率为4.25mgNH4N-N(-1)。在添加26 mg亚硝酸盐-N的改良基质中，生物膜对总无机氮的去除效率达到5.11mgN·L(-1)d(-1)。对总N离子的去除效果高于添加26 mg硝酸盐-N的去除效果。此外，我们还尝试了利用藻类生物膜同时去除基质中的氨氮、硝酸盐和亚硝酸盐离子以及对蓝藻生长的抑制作用。结果表明，金黄色葡萄球菌生物膜可作为废水净化的生物功能材料。
Removal of inorganic nitrogen sources by cells of the aerial microalga Trentepohlia aurea grown on the surface of substrate, such as filter paper, has been investigated in a batch system. When the alga grew on the paper dampened with medium, it actively ingested inorganic nitrogenous compounds in the medium. Immobilized cells on the filter papers were called 'algal biofilm' in this study. When the algal biofilms were soaked in modified Bold's Basal medium (using 1 g NH4Cl l(-1) as a N source), the removal rate was 4.25 mg ammonium-N l(-1) day(-1) in 40 days. In modified medium with added 26 mg nitrite-N, the removal rate of the total inorganic N ion by the biofilms reached 5.11 mg N l(-1) day(-1). This removal rate of total N ion was higher than that in the medium by addition of 26 mg nitrate-N. In addition, we tried to examine simultaneous removal of ammonium, nitrate, and nitrite ions and growth inhibition of cyanobacteria in the medium by using the algal biofilms. Consequently, it was demonstrated that the algal biofilms of T. aurea could be utilized as a biofunctional material for the purification of wastewater.