| 藻细胞不同生长阶段的海泡石凝聚除藻性能 |
| 摘要点击 3016 全文点击 2858 投稿时间：2003-12-08 修订日期：2003-12-25 |
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| 中文关键词 蓝藻 生长期 疏水性 表面电性 凝聚性能 |
| 英文关键词 cyanobacterium growth phase hydrophobicity surface charge flocculation ability |
| DOI 10.13227/j.hjkx.20040617 |
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| 中文摘要 |
| 对铜绿微囊藻(Microcystis aeruginosa 469)的4个不同生长阶段:延迟末期,对数中期,对数末期和衰老初期的表面疏水性(疏水分配法)和表面电性(Zeta电位)进行了测定,并利用0.2 g/L的海泡石进行了凝聚除藻性能实验.结果显示以上4个生长阶段的藻细胞表面疏水性平均为:64%, 48%, 58%和70%,而凝聚沉降60 min后的藻细胞去除效率为:97%, 87%, 81%和99%,表明藻细胞表面疏水性与粘土凝聚性能之间有较好的相关性(R＝0.7～0.8),但与表面电性的关系不大.M.A.469各个生长阶段的表面疏水性和凝聚性能的强弱顺序可依次确定为:衰老期>延迟期>对数增长期.
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| 英文摘要 |
| Four different growth phases, late lag phase, middle logarithmic phase, late logarithmic phase and early senescence phase of Microcystis aeruginosa 469 were studied for their surface hydrophobicity (xylene-water system) and surface charge (Zeta potential), followed by flocculation tests with sepiolite of 0.2 g/L. The results showed that the values of hydrophobicity were 64%, 48%, 58% and 70%, and the algal removal efficiencies after 60 min were 97%, 87%, 81% and 99% respectively, indicating a good relationship between surface hydrophobicity and removal efficiency (R=0.7～0.8), but not the surface charge. Surface hydrophobicity and removal efficiency for the algal cells of Microcystis aeruginosa both varied with growth phase in a sequence of senescence phase>lag phase>logarithmic phase. |
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