Document Detail


Soil-based treatments of mechanically collected cyanobacterial blooms from Lake Taihu: efficiencies and potential risks.
MedLine Citation:
PMID:  23153314     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In China, mechanical collection of cyanoblooms followed by soil-based treatments has been widely used as emergency strategies in many eutrophicated freshwaters. This study was to evaluate both efficiencies and potential risks of typical soil-based technologies. Results from this study indicated that over 90% of cyanobacterial biomass and 96% of dissolved microcystins (MCs) could be restrained in soils via three-level systems, which were much better than single-level systems. High concentrations of MCs, ranged from 65 to 276 ng g-1 and 2.12 to 6.6 ng g-1 were found in soils around treatment systems and croplands, respectively. In the soil solutions, MCs ranged from 0.35 to 2.0 g L-1, showing a potentially high leaching risk. In the samples from shallow groundwater near the treatment systems, MC concentrations were detected as high as 1.2 g L-1. Moreover, bioaccumulations of MCs varied between 22 g g-1 and 365 g g-1, and 19 g g-1 to 222 g g-1 were found in thirteen kinds of crops and seven kinds of wild grass, respectively. Our results indicated, for the first time, that current soil-based technologies were effective but could pose potential environmental, ecological, and public health risks. Further improvements of these technologies were also proposed based on our findings.
Authors:
Wei Chen; Yunlu Jia; Shuang Zhao; Enhua Li; Qichao Zhou; Liming Liu; Lirong Song
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-16
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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