کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7480580 | 1485240 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Production of bioflocculants prepared from formaldehyde wastewater for the potential removal of arsenic
ترجمه فارسی عنوان
تولید بیو فلکولوژیست ها از پساب فرمالدئید برای حذف احتمالی آرسنیک آماده شده است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
A novel bioflocculant (MBF-79) prepared using formaldehyde wastewater as carbon resource was investigated in the study. The optimal conditions for bioflocculant production were determined to be an inoculum size of 7.0%, initial pH of 6.0, and formaldehyde concentration of 350Â mg/L. An MBF-79 of 8.97Â g/L was achieved as the maximum yield. Three main elements, namely C, H, and O, were present in MBF-79 with relative weigh percentages of 39.17%, 6.74%, and 34.55%, respectively. The Gel permeation chromatography analysis indicated that the approximate molecular weight (MW) of MBF-79 was 230Â kDa. MBF-79 primarily comprised polysaccharide (71.2%) and protein (27.9%). Additionally, conditions for the removal of arsenic by MBF-79 were found to be MBF-79Â at 120Â mg/L, an initial pH 7.0, and a contact time 60Â min. Under the optimal conditions, the removal efficiencies of arsenate (0.5Â mg/L) and arsenite (0.5Â mg/L) were 98.9% and 84.6%, respectively. Overall, these findings indicate bioflocculation offers an effective alternative method of decreasing arsenic during water treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 172, 1 May 2016, Pages 71-76
Journal: Journal of Environmental Management - Volume 172, 1 May 2016, Pages 71-76
نویسندگان
Haijuan Zhao, Chunying Zhong, Honggao Chen, Jie Yao, Liqing Tan, Youlang Zhang, Jiangang Zhou,