• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>African Journal of Biotechnology >Phytoremediation technologies for Ni++ by water hyacinth
【24h】

Phytoremediation technologies for Ni++ by water hyacinth

机译：水葫芦对Ni ++的植物修复技术

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Phytoremediation of metal contaminated soil and water by?Eichhornia crassipes(water hyacinth) is promising. The study was conducted to compare the phytoremoval of Ni++?from soil and wastewater. For the measurement of phytoremoval from soil,?E. crassipes?was used in a pot experiment. Results showed the removal of (Ni) 24.23 μg/g dry weight of plant and large level calculations show removal of 3449.76 kg/ha of soil, corresponding to 25 μg/g of the added Ni++. In the second experiment, Ni++?contaminated Hoagland’s solution was used for the hydroponic growth of water hyacinth. The result of hydroponic experiment showed the phytoremoval of Ni++?from Ni++?contaminated wastewater; maximum removal was 1.954 μg/g of dry weight. In third experiment, ash of water hyacinth was used for the adsorption and desorption of Ni++. The adsorption capacity was 1.978 μg/g of ash. For the extraction (desorption) of Ni++, 3 M HNO3was used. Desorption capacity was 3.71 μg/g of ash. The results of comparative study show order of nickel phytoremediation from soil to be greater than that from water by adsorption which was greater than that from water by hydroponic study. For phytoremoval of Ni++?from soil and water, water hyacinth plant and its ash showed excellence. The desorbed Ni++?can be used in the industries e.g. in Ni plating.
机译：凤眼凤梨（Eichhornia crassipes）（水葫芦）对金属污染土壤和水的植物修复作用是有希望的。进行了研究以比较土壤和废水中Ni ++？的植物脱除。为了测量土壤中的植物释药，ΔE。锅实验中使用了crassipes?。结果表明，去除的植物（Ni）干重为24.23μg/ g，大量计算表明去除的土壤为3449.76 kg / ha，相当于添加的Ni ++为25μg/ g。在第二个实验中，将受Ni ++污染的Hoagland溶液用于水葫芦的水培生长。水耕试验结果表明，受Ni ++污染的废水中Ni ++的植物去除率。最大去除量为1.954μg/ g干重。在第三个实验中，水葫芦的灰分用于Ni ++的吸附和解吸。灰分的吸附容量为1.978μg/ g。对于Ni ++的萃取（解吸），使用了3 M HNO3。解吸容量为3.71μg/ g灰。比较研究结果表明，土壤吸附镍对植物的修复顺序要比水吸附对植物的修复顺序要大，而水培研究对镍的修复作用要大。对于从土壤和水中Ni ++？的植物提取而言，水葫芦及其灰分表现出优异的性能。解吸的Ni ++？可以用于例如在镀镍中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号