سال انتشار: ۱۳۸۴

محل انتشار: دهمین کنگره ملی مهندسی شیمی ایران

تعداد صفحات: ۷

نویسنده(ها):

Mohsen Nosrati – Department of Chemical Engineering, Biotechnology Group, Tarbiat Modarres University, P.B. 14115-143, Tehran, Iran
Mehdi Jalali – Department of Chemical Engineering, Biotechnology Group, Tarbiat Modarres University, P.B. 14115-143, Tehran, Iran
Shojaosadati – Department of Chemical Engineering, Biotechnology Group, Tarbiat Modarres University, P.B. 14115-143, Tehran, Iran

چکیده:

Reaction constants and heat release during thermophilic aerobic digestion of typical secondary and mixed bio-solids (sludges) were determined. Maximum reaction constant occurred in the temperature range of 55-60 ºC. By the aid of a temperature P.L.C., measurement of heat releases
were carried out. An amount equal to 16.2 KJ/g-cell was measured for secondary sludge digestion. Cell growth in mixed sludges provided an extra heat equal to 6.7 KJ/g-cell.