| 生物膜及其各种组分对4-氯酚化合物的吸附特征 |
| 摘要点击 1606 全文点击 1830 投稿时间：2000-07-07 |
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| 中文关键词 生物膜 细菌 颗粒物 胞外多糖 4-氯酚 吸附 等温线 |
| 英文关键词 biofilm bacteria particulate exopolysaccharide 4-cp adsorption isotherm |
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| 中文摘要 |
| 对4-氯酚化合物在生物膜不同组分上的吸附行为的实验中,生物膜不同组分包括生长有生物膜外壳的模拟水体悬浮颗粒物(高岭土)、细菌细胞、胞外多糖、高岭土及有胞外多糖存在时的高岭土.在所设计的这5种吸附体系中,前4种吸附较符合Langmuir和Freundlich等温吸附方式.在室温25℃,pH值为6.1的吸附条件下,细菌细胞和胞外多糖作为生物吸附物质,对4-氯酚的吸附明显地大于高岭土;高岭土外的生物膜外壳影响对4-氯酚的吸附,生长有生物膜外壳的高岭土对4-氯酚的吸附量高于单独高岭土体系. |
| 英文摘要 |
| The p chlorophenol (4-cp) adsorption to biofilm components was investigated by the experiment. Biofilm components included modeling water particulate (kaolin) with biofilm coating, bacterial cell, exopolysaccharide, kaolin and kaolin with exopolysaccharide. The adsorption of 4-cp in these systems could be described by Langmuir and Freundlich isotherm equations except the system of kaolin with exopolysaccharide. Under the condition of 25℃ and pH of 6.1 in these reaction systems, bacterial cell and EPS adsorbed more 4-cp than kaolin. The biofilm coating of kaolin affected its adsorption to 4-cp. Kaolin with biofilm coating adsorbed more 4-cp than that without biofilm coating. |
