کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
816173 | 906433 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lead and cadmium removal from water using duckweed - Lemna gibba L.: Impact of pH and initial metal load
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The aim of this study was to investigate the potential of duckweed (Lemna gibba) in heavy metal (Pb and Cd) from water under different pH and metal loads. A total of three (2, 5 and 10Â mg/L) strengths of Pb and Cd were used with varying pH (5, 7 and 9) and changes in metal concentration and metal uptake yield of system were recorded. The Pb and Cd removal ranged between 60.1% (2Â mg/L at 9 pH) and 98.1% (10Â mg/L at 7 pH) and 41.6% (10Â mg/L at pH 9) and 84.8% (2Â mg/L at pH 7), respectively. The duckweed set-up with pH 7 showed the optimum metal removal. The metal removal rate showed an inverse relationship with pH (r2Â >Â 0.60, for all). Bioconcentration factor (BCF) and metal uptake yield per unit of dry biomass (qm) were recorded: 403-738 and 445-616, respectively for BCFPb and BCFCd. The qm suggest the dose (mg/L) 5 and 10 at pH 5 as the best combinations for the optimum removal. Results, thus suggest that L. gibba can be a suitable candidate for removal of heavy metals from pollutant water bodies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Alexandria Engineering Journal - Volume 54, Issue 4, December 2015, Pages 1297-1304
Journal: Alexandria Engineering Journal - Volume 54, Issue 4, December 2015, Pages 1297-1304
نویسندگان
Rashmi Verma, Surindra Suthar,