Losses in nitrogen,phosphorus and potassium of water hyacinth dehydrated by mechanical press

DU Jing; CHANG Zhi-zhou; YE Xiao-mei; HUANG Hong-ying

Volume 25 Issue 1

Nov. 2011

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Article Navigation > Fujian Journal of Agricultural Sciences > 2010 > 25(1): 104-107

DU Jing, CHANG Zhi-zhou, YE Xiao-mei, HUANG Hong-ying. Losses in nitrogen,phosphorus and potassium of water hyacinth dehydrated by mechanical press[J]. Fujian Journal of Agricultural Sciences, 2010, 25(1): 104-107.

Citation:

DU Jing, CHANG Zhi-zhou, YE Xiao-mei, HUANG Hong-ying. Losses in nitrogen,phosphorus and potassium of water hyacinth dehydrated by mechanical press[J]. Fujian Journal of Agricultural Sciences, 2010, 25(1): 104-107.

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Losses in nitrogen,phosphorus and potassium of water hyacinth dehydrated by mechanical press

1.
Institute of Agricultural Resource and Environmental Sciences, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China

Received Date: 2009-06-28
Rev Recd Date: 2009-08-17
Publish Date: 2010-02-15

Abstract

Abstract

An experiment was carried out to investigate the effect of dehydration by mechanical press on water removal and NPK losses.The results showed that when the pressure increased from 0 MPa to 12MPa,the moisture content was reduced from 94.72% to 68.90%.The dehydration rate was up to 91.27% and the dry matter loss was up to 29.31%.The leached NPK increased as the pressure increased.Under a pressure up to 12MPa,the maximum losses in NPK were 52.28%,47.83% and 84.83%,respectively.The rates of loss on different nutrients were: total N(Kjeldahl nitrogen)(71.00%)> inorganic nitrogen(42.97%),water-soluble P(68.90%) > organic P(45.03%) and water-soluble K(84.75%).The nutrient losses in water hyacinth under the mechanical press were closely related to the nutrients' water solubility.
- water hyacinth,
- dehydrating effects,
- loss of dry matter,
- loss of nutrient

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References(3)

References

[1]	刘剑彤.有机-无机复合肥[J].科技开发动态,2004(12):20.
[2]	SINGHAL V,RAI J.Biogas p roduction from water hyacinth and channel grass used for phytoremediation of industrial effluents[J].Bioresource Technology,2003,86 (3):221-225.
[3]	SOLLY,R K.Integrated Rural Development With Water Hyacinth[C] ∥ Proceedings of The International Conference On Water hyacinth,1984:70-78.