| 引用本文: | 浩云涛,李建宏,潘欣,马宇翔,王雪锋.椭圆小球藻(Chlorella ellipsoidea)对4种重金属的耐受性及富集.湖泊科学,2001,13(2):158-162. DOI:10.18307/20010209 |
| HAO Yuntao,LI Jianhong,PAN Xin,MA Yuxiang,WANG Xuefeng.Tolerance of Chlorella ellipsoidea and Its Removal of Heavy Meta. J. Lake Sci.2001,13(2):158-162. DOI:10.18307/20010209 |
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| 摘要: |
| 分离筛选获得了一株高重金属抗性的椭圆小球藻(Chlorella ellipsoidea),并研究了不同浓度的重金属铜、锌、镍、镉对该藻生长和叶绿素a含量的影响及其对重金属离子的吸收富集作用.结果显示,该藻对Zn2+和Cd2+具有很高的耐受性.对四种重金属的耐受能力依次为锌 > 镉 > 镍 > 铜.其叶绿素a含量与重金属离子浓度呈明显负相关.该藻对重金属具有很好的去除效果,经15μmol/L Cu2+、300μmol/L Zn2+、100μmol/L Ni2+、30μmol/L Cd2+浓度72h处理,去除率分别达到40.93%、98.33%、97.62%、86.88%,可应用于含重金属废水的处理 |
| 关键词: 椭圆小球藻 重金属 耐受性 富集 |
| DOI：10.18307/20010209 |
| 分类号: |
| 基金项目:江苏省教委基金资助项目(98KJD180002) |
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| Tolerance of Chlorella ellipsoidea and Its Removal of Heavy Meta |
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HAO Yuntao, LI Jianhong, PAN Xin, MA Yuxiang, WANG Xuefeng
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Department of Biology, Nanjing Normal University, Nanjing 210097 P. R. China
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| Abstract: |
| A st rain of Chlorella ellipsoidea with high tolerance to heavy metals was isolated. Grow th and heavy metals removal were studied on this alg a exposed to different heavy metal concent rations.The ef fect of heavy metal on grow th indicated that cells can live in higher Zn2+ and Cd2+ concent rations.The tolerant sequence to 4 kinds of metals for C.ell ipsoidea was Zn2+ > Cd2+ > Ni2+ > Cu2+.The content of chlo rophyll a decreased with the increase of heavy metal concent rations. In this ex periment, C.ellipsoidea also show ed its rather st rong ability to remove heavy metals from the medium.After 72-hour treatment, the removal rates of metals were 40.93%, 98.33%, 97.62%and 86.88% respectively, for 15 μmol/L Cu2+, 300μmol/L Zn2+, 100μmol/L Ni2+ and 30μmol/L Cd2+.These results suggested that the C.ellipsoidea strain could be applied to the treatment of heavy metal wastewater. |
| Key words: Chlorella ellipsoidea heavy metal tolerance removal |
