| 白腐真菌菌丝球形成的物化条件及其对铅的吸附 |
| 摘要点击 1047 全文点击 2324 投稿时间：1998-04-06 |
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| 中文关键词 白腐真菌 菌丝球 生物吸附 Pb2+ 碳氮比 生长量 孢子悬液 表面活性剂 |
| 英文关键词 Phanerochaete chrysosporium mycelial pellet biosorption Pb2+ C/N biomass spore suspension surface-active agent |
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| 中文摘要 |
| 为了探讨影响微生物菌丝球生长的物理化学因素和控制菌丝球大小的规律以及微生物吸附重金属的效果,对黄孢展齿革菌(Phanerochaetechrysosporium)呈球状体生长和用此菌丝球吸附水溶液中的Pb2+进行了研究。实验结果表明,在培养液pH值为4.5,孢子悬液浓度为106个/ml,表面活性剂吐温80的浓度为0.1%,高碳氮和摇床转速为150r/min的条件下,于39℃下培养3d,形成直径在1.5-1.7mm范围内的菌丝球,光滑均匀,具有一定机械强度,对Pb2+的吸附能力最强。用0.2mol/L的NaOH溶液处理该菌丝球,对25mg/L的铅溶液的吸附率达到了95%以上,表明用该菌丝球吸附水溶液中的Pb2+是可行的。 |
| 英文摘要 |
| The research on the growth of Phanerochaete chrysosporium in the form of pellet was made in this paper to examine the effects of physical and chemical conditions on the formation of mycelial pellets.The experimental results showed that the microorganism pellets of smooth surface,even size(diameter)and good mechanical properties could be obtained at the follwoing culture conditions:pH4.5,106 spores/ml in inoculum,0.1% Tween 80 in medium,high C/N and on the shaker of 150r/min for 3d.Using P.chrysosporium mycelial pellets in the biosorption of Pb2+ from aqueous solution,the uptake reached the maximum when the diameter of pellet was in the range of 1.5—1.7mm.When the pellets were pretreated by boiling in 0.2mol/L NaOH for 40min,the Pb2+ uptake was far higher than the pellets without pretreatment,and the removal efficiency could reach above 95%.The research results showed that the removal of Pb2+ from aqueous solution by P.chrysosporium mycelial pellets was practical. |
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