کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
683405 888999 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phytoaccumulation of zinc by the aquatic plant, Lemna gibba L.
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Phytoaccumulation of zinc by the aquatic plant, Lemna gibba L.
چکیده انگلیسی

The uptake of zinc (Zn) by the duckweed Lemna gibba L., native to the north-east region of Algeria, was investigated in quarter Coïc solutions enriched with 6.0, 10.0, 14.0 and 18.0 mg l−1 of Zn supplied as zinc sulphate (ZnSO4). Zinc concentrations were measured in the water daily and in duckweed biomass at the end of the experiments. These results showed that under experimental conditions (pH = 6.0 ± 0.1, T = 21 ± 1 °C, photoperiod = 12 h/j), L. gibba was able to accumulate in its biomass 4.23; 15.62; 23.88 and 25.81 mg g−1 DM, respectively for the four initial concentrations selected. At these concentrations, the metal removed percentages were 61–71%. The mass balance performed on the system showed that about 49–68% of Zn (depending on the initial concentration in water) was removed by precipitation as zinc phosphate. The results showed that this aquatic plant can be successfully used for Zn removal.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 100, Issue 23, December 2009, Pages 6137–6140
نویسندگان
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