کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
680741 1459990 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effective water content reduction in sewage wastewater sludge using magnetic nanoparticles
ترجمه فارسی عنوان
کاهش مقدار مؤثر آب در لجن فاضلاب با استفاده از نانوذرات مغناطیسی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


• Efficiency of MION, protein and chemicals on the reduction of sludge water content.
• Separation of sludge using an external magnet 95% reduction of sludge water content by MION.
• Comparison of different flocculants on sludge wet/dry weight.

The present work compares the use of three flocculants for sedimentation of sludge and sludge water content from sewage wastewater i.e. magnetic iron oxide nanoparticles (MION), ferrous sulfate (chemical) and Moringa crude extract (protein). Sludge water content, wet/dry weight, turbidity and color were performed for, time kinetics and large-scale experiment. A 30% reduction of the sludge water content was observed when the wastewater was treated with either protein or chemical coagulant. The separation of sludge from wastewater treated with MION was achieved in less than 5 min using an external magnet, resulted in 95% reduction of sludge water content. Furthermore, MION formed denser flocs and more than 80% reduction of microbial content was observed in large volume experiments. The results revealed that MION is efficient in rapid separation of sludge with very low water content, and thus could be a suitable alternative for sludge sedimentation and dewatering in wastewater treatment processes.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 153, February 2014, Pages 333–339
نویسندگان
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