کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
685840 889051 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Particle size and metal distributions in anaerobically digested pig slurry
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Particle size and metal distributions in anaerobically digested pig slurry
چکیده انگلیسی

Particle size distribution and trace element patterns were studied in a full-scale anaerobic digestion plant treating pig slurry. Mass balance was established for major (N, P, K, Ca, Fe, Mg and S) and minor (Al, Cu, Mn and Zn) elements. Most of the elements were conserved through the process but part of the P, Ca, Mg and Mn was deposited as crystals lining the digester. In the dry matter of the slurry, Cu and Zn occurred at between 170 and 2600 mg kg−1 due to pig diet supplements. Analyses of particle size distributions in raw and digested slurries showed a general shift in distribution towards larger sizes due to degradation of small and easily degradable particles as well as formation of large microbial filaments. Graded sieving of digested slurry showed metals to be mainly present on 3–25 μm particles. Less than 2% Cu and Zn was removed by passage through a 250 μm rotary screen.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 99, Issue 7, May 2008, Pages 2340–2348
نویسندگان
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