کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6302612 1618041 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics of nutrient removal and biomass production by duckweed Wolffia arrhiza in continuous-flow mesocosms
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Kinetics of nutrient removal and biomass production by duckweed Wolffia arrhiza in continuous-flow mesocosms
چکیده انگلیسی
The nutrient removal and biomass production with duckweed Wolffia arrhiza was assessed using laboratory-scale continuous-flow mesocosms fed with model wastewater. Average removal rates of nitrogen and phosphorus by vegetative fronds were 0.03-0.18 mg-N/m2/d and 0.023-0.079 mg-P/m2/d, respectively. The maximum production rates of the vegetative fronds and the turions were respectively 86-160 g-wet/m2/d and 55-64 g-wet/m2/d, depending on the nutrient concentration. The kinetic data of the biomass and nutrient concentrations were analyzed using a mathematical model, which showed that the maximum specific growth rate of W. arrhiza was 0.35-0.38 d−1, whereas the turion formation was induced when the specific growth rate decreased below 0.085-0.12 d−1 in low-nitrogen conditions. The model developed in this study is applicable for predicting the wastewater treatment performance and biomass production of preferential biomass, the protein-rich vegetative fronds, the starch-rich turions, or total biomass of W. arrhiza.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Engineering - Volume 57, August 2013, Pages 210-215
نویسندگان
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