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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 7, 2015, pp. 2339-2348
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Bioline Code: st15220
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 7, 2015, pp. 2339-2348
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Effects of algicide on the growth of Microcystis flos-aquae and adsorption capacity to heavy metals
Guo, P. Y.; Liu, Y.; Wen, X. & Chen, S. F.
Abstract
In this paper, the effects of salicylic acid (SA)
algicide carried by cross-linked chitosan on the inhibition
of Microcystis flos-aquae and the removal ability of heavy metals Pb and Ni in compound polluted water were studied.
The results showed that the algicide had significant inhibitory
effects on Microcystis flos-aquae: when the concentrations
were 550 and 700 mg L-1, the inhibition time was
up to 13 days or more, and the inhibition rate was as high
as 99 %. The algicide exhibited strong adsorption capacity
to heavy metals Pb and Ni. The adsorption rates of the
algicide at concentrations of 400 and 550 mg L-1 on Ni
and Pb were 61 and 64.9 %, 71.2 and 72.5 % at 13 days,
respectively. The algicide allows a slow release of SA and
long-term inhibition of algae and has better adsorption
capacity on heavy metals, thus providing a method for the
effective control of eutrophication and combined heavy
metal pollution in water.
Keywords
Algicide; Heavy metals; Adsorption capacity; Microcystis flos-aquae; Cross-linked chitosan; Salicylic acid
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