کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4997171 1459904 2017 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acidified-flocculation process for harvesting of microalgae: Coagulant reutilization and metal-free-microalgae recovery
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Acidified-flocculation process for harvesting of microalgae: Coagulant reutilization and metal-free-microalgae recovery
چکیده انگلیسی
Chemical flocculation is considered to be an overall low-cost and up-scalable process for harvesting of microalgae. In this study a new flocculation approach utilizing metal coagulant (Fe2(SO4)3) and sulfuric acid (H2SO4) was introduced for harvesting of Chlorella sp. KR-1, which overcome two main issues of contamination and reuse of coagulant. Reduction of pH successfully released precipitates attached to the microalgae, and the remaining acidic solution containing recovered ferric ions could be reused for harvesting up to three times with high, better-than 98% efficiencies. Moreover, the acid-treated microalgal biomass could be directly used for lipid extraction without additional catalyst. High extraction yields of around 32% were achieved with FAME conversion efficiencies of around 90%. The integrated approach devised in the present study is expected to make the best use of the age-old yet effective harvesting means of flocculation, which can be a practical and economical option in microalgal biorefinery.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 239, September 2017, Pages 190-196
نویسندگان
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