Source segregated food waste was collected from domestic properties and its composition determined together with the average weight produced per household, which was 2.91 kg per week. The waste was fed over a trial period lasting 58 weeks to an identical pair of 1.5 m(3) anaerobic digesters, one at a mesophilic (36.5 degrees C) and the other at a thermophilic temperature (56 degrees C). The dig...

In this study, a newly established bench-scale thermophilic continuously stirred fluidized bed reactor (CSFBR) was applied for anaerobic co-digestion of food waste (FW) with grease trap (GTW). The performance CSFBR regarding stability and treatment efficiency inspected through laboratory contrast experiment two traditional continuous tank reactors (CSTRs). the OLR range 3.19–7.41 g COD/L/d, met...

Anaerobic digestion is a technology widely used for treatment of organic waste biogas production as source clean energy. In this study, poultry house wastes (PHW) material was examined production. The effects inoculum addition, pretreatment the substrate, and temperature on were taken into full consideration. Results revealed that effect addition more significant than alkaline raw materials. re...

Spent livestock bedding is a valuable resource for the production of green energy (methane) in rural areas. Comparison and evaluation batch anaerobic digestion co-digestion different mixtures goat straw (SGSB) cheese whey were carried out. Biochemical methane potential (BMP) tests 100% SGSB, 95% SGSB-5% whey, 90% SGSB-10% 85% SGSB-15% found to be 423 ± 7, 354 9, 371 2, 293 1, 274 2 mL CH4 g?1 V...

The present study of a typical proteolytic enzyme extends the quantitative investigations previously reported from this laboratory on the effects of pressure on protein systems in viva (1) and in vitro (2). This paper presents new data on the self-digestion of trypsin and the digestion of casein by trypsin; a forthcoming paper will discuss the effects of temperature and hydrostatic pressure on ...

The anomalies of enzyme action have frequently been accounted for by the assumption of an intermediate compound between the enzyme and the substrate. I t was shown, however, by Nelson and Hitchcock t that in the case of invertase the experiments could not be accurately calculated on this basis. The writer found with trypsin' that although the effect of varying the substrate concentration could ...