RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2008, Vol. 17 >> Issue (2): 201-201.

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REVIEW ON COMPREHENSIVE DISPOSAL AND UTILIZATION OF WATER HYACINTH

XU Zuxin, GAO Yuexia, WANG Sheng   

  • Received:1900-01-01 Revised:1900-01-01 Online:2008-03-20

Abstract:

Water hyacinth is believed to have originated in the Amazon basin in South America,where it was kept under control by natural predators.However,the plant has spread throughout the whole tropical and semi-tropical zone by human introduction,causing various kinds of problems such as the reduction of fish production,its interference with fishing and the obstruction of shipping routes.Water hyacinth is difficult to be disposed because of its high content of lignin and fibrin,and its fast growth and robustness of seeds and absence of soundly applicable technology make it difficult to be controlled. In this paper,the biological characters of water hyacinth and existing controlling methods of the plant were briefly introduced at first. Chemical contents of the plant were also described.The present utilization methods of water hyacinth can be summarized into three modespreparation for fuel (solid fuel,liquid fuel and gaseous fuel),for fodder (fodder and silage) and for manure (organic fertilizer and green manure),and the modes were also compared with each other.It is concluded that the production of biogas and organic fertilizer from water hyacinth is a potential method;as for the disposal of the plant in rural areas,composting and green manure treatment are better ways.

Key words: ater hyacinth, comprehensive disposal, utilization, green manure

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