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

Chinese Journal of Applied Ecology ›› 1991, Vol. 2 ›› Issue (2): 159-167.

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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. 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

Abstract

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 F_x of 102194 in from 80 to 160 ppb Ag concentra ion of wastewater, its ash content is 4.125%, and accumulation coefficient F_x' 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

Dai Quanyu, Chen Yuangao, Pi Yu, Zhang Heng, Xu Genrong, Zhang Xiuying, Dai Wenning. Study on the accumulation amount of silver in wastewater and its utilization by water hyacinth[J]. Chinese Journal of Applied Ecology, 1991, 2(2): 159-167.

References

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

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