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应用生态学报 ›› 1991, Vol. 2 ›› Issue (2): 159-167.

• 研究论文 • 上一篇    下一篇

凤眼莲对含银废水中银的富集量及其应用研究

戴全裕1, 陈源高1, 皮宇2, 张珩2, 徐根荣2, 张秀英3, 戴文宁3   

  1. 1. 中国科学院南京地理与湖泊研究所, 南京 210008;
    2. 无锡电影胶片厂, 无锡 214165;
    3. 地质矿产部南京中心实验室, 南京 210018
  • 收稿日期:1990-07-24 出版日期:1991-04-25 发布日期:1991-04-25
  • 基金资助:

    国家自然科学基金

Study on the accumulation amount of silver in wastewater and its utilization by water hyacinth

Dai Quanyu1, Chen Yuangao1, Pi Yu2, Zhang Heng2, Xu Genrong2, Zhang Xiuying3, Dai Wenning3   

  1. 1. Nanjing Institute of Geography and Limnology, Academia Sinica, Nanjing 210008;
    2. Wuxi Cinefilm Factory, Wuxi 214165;
    3. Central Laboratory, Bureau of Geology and Mineral Resources of Jiangsu Province, Nanjing 210018
  • Received:1990-07-24 Online:1991-04-25 Published:1991-04-25

摘要: 1987—1989年进行了关于凤眼莲(Eichhorniac rassipes)等水生植物对含银废水中银的富集量及其应用问题的研究。在国外,Wolverton测定了化学废水中凤眼莲根部对银的富集量为113ppm(占干物重),而本项研究在含银废水浓度为80—160ppb中生长的凤眼莲根部对银的富集量达12251ppm(占干物重),其富集系数Fx为102194,灰分含银量为4.125%,灰分富集系数Fx′为343750。并成功地从净化含银废水的凤眼莲植物残体(约6kg灰分)中提炼和回收白银105g。这不仅具有重要的科学意义,而且也为其它含贵稀金属的废水净化及回收有用金属提供了有益的经验。

关键词: 凤眼莲, 银, 富集系数, 贵金属回收

Abstract: The accumulation amount of silver in wastewater and its utilization by aquatic plants uch as water hyacinth (Eichhornia crassipes) had been studied during 1987—1989. At abroad, Wolverton detected 113 ppm(DM)silver in roots of water hyacinth in chemical wastewater, but this research detected 12251.3 ppm (DM) with an accumulation coefficient Fx of 102194 in from 80 to 160 ppb Ag concentra ion of wastewater, its ash content is 4.125%, and accumulation coefficient Fx' is 343750. It was succeeded to recover the silver from aquatic plants, whose amount is 105g from about 6kg ashes. This study offered a profitable experience in purifying wastewater containing precious metals and recovering them.

Key words: Water hyacinth, Silver, Accumulation coefficient, Recovery of precious metals