Document Detail


On-site treatment of turbid river water using chitosan, a natural organic polymer coagulant.
MedLine Citation:
PMID:  16594334     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Chitosan, acetylate of chitin, is a biodegradable cationic polymer. The objective of this study is to assess the applicability of chitosan as an on-site treatment agent of turbid water caused by river construction works and other diffused pollutions. The results of jar-tests indicate that floc of chitosan is much larger than that of aluminium sulfate, and turbidity treated by chitosan under moving water conditions is much lower than that of aluminium sulfate. Chitosan is applied to Imou River in Yamaguchi prefecture, where river construction work is going on. St.1 is located just below the construction work, St.2 is located about 250 m downstream from St.1, and St.3 is located about 350 m downstream from St.2. Initial turbidity of each station is 1,100, 937 and 313 NTU, respectively. By applying chitosan at St.1, turbidity of each station is drastically reduced to 1,100, 12 and 0 NTU. Chitosan could be helpful to reduce problems caused by turbidity in rivers.
Authors:
M Sekine; A Takeshita; N Oda; M Ukita; T Imai; T Higuchi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Water science and technology : a journal of the International Association on Water Pollution Research     Volume:  53     ISSN:  0273-1223     ISO Abbreviation:  Water Sci. Technol.     Publication Date:  2006  
Date Detail:
Created Date:  2006-04-05     Completed Date:  2006-08-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9879497     Medline TA:  Water Sci Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  155-61     Citation Subset:  IM    
Affiliation:
Civil & Environmental Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan. ms@env.civil.yamaguchi-u.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Alum Compounds / pharmacology
Biodegradation, Environmental
Cations
Chitosan / pharmacology*
Environmental Monitoring
Hydrogen-Ion Concentration
Polymers / chemistry*
Rivers
Waste Disposal, Fluid
Water
Water Pollutants
Water Pollution
Water Purification / instrumentation*,  methods*
Water Supply
Chemical
Reg. No./Substance:
0/Alum Compounds; 0/Cations; 0/Polymers; 0/Water Pollutants; 10043-01-3/aluminum sulfate; 7732-18-5/Water; 9012-76-4/Chitosan

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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