| 固定化产黄青霉废菌体吸附铅与脱附平衡 |
| 摘要点击 882 全文点击 1783 投稿时间：1997-11-08 |
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| 中文关键词 生物吸附 固定化 吸附平衡 脱附平衡 产黄青霉废菌体 |
| 英文关键词 biosorption immobilization adsorption equilibrium desorption equilibrium Penicillium chrysogenum |
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| 中文摘要 |
| 研究固定化产黄青霉废菌体对Pb2+的吸附与脱附平衡的结果表明,Pb2+的生物吸附受pH值的影响很大,温度的影响则很小。EDTA是洗脱固定化产黄青霉废菌体上所吸附Pb2+的最佳脱附剂。在保持脱附率为100%的条件下,EDTA的初浓度、固定化废菌颗粒的吸附量与最大固液比之间存在正相关关系。0.1mol/L的EDTA在脱附Pb2+时终浓度最高可达20700mg/L,最大固液比可达290以上,浓缩因子可达113,对废水中的Pb2+有很好的回收作用. |
| 英文摘要 |
| The result of adsorption and desorption equilibrium of Pb(Ⅱ) by immobilized waste mycelium of Penicillium chrysogenum indicated that,the biosorption of Pb2+ was strongly affected by pH,but was not sensitive to temperature,EDTA was the optimum eluant for the elution of adsorbed lead by immobilized waste mycelium P.chrysogenum particle.At the condition of maintaining the elution efficiency in 100%,the stoichiometric relation among the concentration of the EDTA,the uptake capacity of immobilized waste mycelium particle and the maximum solid to liquid ratio could be described using given equation by the paper.When the concentration of EDTA was 0.1mol/L,the maximum eluate lead concentration could achieve 20700mg/L,the maximum ratio of solid to liquid could be over 290,the concentrate factor could achieve 113. |
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