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磷对塿土吸附四环素的影响

Keywords: 四环素,,塿土,吸附

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Abstract:

本文研究了复合污染条件下磷对塿土吸附四环素的影响。研究结果表明,磷的存在降低了塿土对四环素的吸附量;而且,磷存在时塿土对四环素的吸附速率有所增加。在25℃,pH=7的条件下,塿土对四环素的吸附等温线数据更符合Langmuir模型,单一及复合污染条件下,塿土对四环素的最大吸附量分别为37.66mmol·kg-1和34.90mmol·kg-1。此外,pH值对于塿土吸附四环素的影响较大,当溶液pH<5时,四环素的吸附量随着pH的升高而减小,当57时,则又随着pH的升高而减小。

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