Water hyacinth ( Eichhornia crassipes) waste as an adsorbent for phosphorus removal from swine wastewater

Both live plants and dried straw of water hyacinth were applied to a sequential treatment of swine wastewater for nitrogen and phosphorus reduction. In the facultative tank, the straw behaved as a kind of adsorbent toward phosphorus. Its phosphorus removal rate varied considerably with contact time...

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Bibliographic Details
Published in:Bioresource technology 2010-12, Vol.101 (23), p.9025-9030
Main Authors: Chen, Xi, Chen, Xiuxia, Wan, Xianwei, Weng, Boqi, Huang, Qin
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Ammonia - isolation & purification
Animal productions
Animals
Applied sciences
Biodegradation, Environmental
Biological and medical sciences
Eichhornia - metabolism
Eichhornia crassipes
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
Laboratories
Nitrogen - isolation & purification
Phosphorus
Phosphorus - isolation & purification
Pollution
Reduction
Straw
Swine
Swine wastewater
Tanks
Terrestrial animal productions
Time Factors
Vertebrates
Waste Disposal, Fluid - methods
Waste Products - analysis
Waste water
Wastes
Wastewater treatment
Wastewaters
Water - standards
Water hyacinth
Water Purification - methods
Water treatment and pollution
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Summary:Both live plants and dried straw of water hyacinth were applied to a sequential treatment of swine wastewater for nitrogen and phosphorus reduction. In the facultative tank, the straw behaved as a kind of adsorbent toward phosphorus. Its phosphorus removal rate varied considerably with contact time between the straw and the influent. In the laboratory, the straw displayed a rapid total phosphorus reduction on a KH 2PO 4 solution. The adsorption efficiency was about 36% upon saturation. At the same time, the water hyacinth straw in the facultative tank enhanced NH 3-N removal efficiency as well. However, no adsorption was evident. This study demonstrated an economically feasible means to apply water hyacinth phosphorus straw for the swine wastewater treatment. The sequential system employed significantly reduced the land use, as compared to the wastewater stabilization pond treatment, for pollution amelioration of swine waste.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2010.07.013