کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7079476 | 1459992 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The behaviors of Microcystis aeruginosa cells and extracellular microcystins during chitosan flocculation and flocs storage processes
ترجمه فارسی عنوان
رفتارهای سلول های میکروزیستی آئروژینوزا و میکروسستین های خارج سلولی در جریان فلوکوسازی کیتوزان و فرآیند ذخیره سازی فلک ها
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
This work aimed to study the effects of chitosan on cell integrity and extracellular microcystins (MCs) of Microcystis aeruginosa cells during flocculation and flocs storage processes. The impacts of chitosan addition, flocculation stirring and flocs storage time were comprehensively detected to prevent or reduce cell lysis and MCs release. Response surface method (RSM) was applied to optimize the chitosan flocculation. Under chitosan concentration 7.31Â mg/L and optimized mechanical conditions, 99% of M. aeruginosa cells were integrated removed. Furthermore, amounts of extracellular MCs were adsorbed by chitosan polymers in this process. With chitosan flocs protect, though cells showed some damage, extracellular MCs concentration in flocculated samples lower than background level within first 2Â d. However, lots of MCs release was observed after 4Â d which may result from chitosan degradation and cells lysis. Therefore, chitosan flocs should be treated within 2Â d to prevent the adsorbed MCs releasing again.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 151, January 2014, Pages 314-322
Journal: Bioresource Technology - Volume 151, January 2014, Pages 314-322
نویسندگان
Hai-Yan Pei, Chun-Xia Ma, Wen-Rong Hu, Feng Sun,