Biomass from two full-scale anaerobic digester treating different wastes regarding to nitrogen concentrations and operating under different hydraulic retention time was characterized by methanogenic batch activity assays at different ammonia concentrations. Two several different patterns regarding activity and microbial parameters was demonstrated depending on operational conditions and methano...

Billy Watson and Bryce Stokes ABSTRACT: The cost and utilization were compared for a thinning operation removing the stems as roundwood with a flail chipper operationThe flail chipper operation recovered an additional 4.2 tons of acceptable chips per acre which resulted in a higher return to the site. There was little difference in the cost of acceptable chips delivered to the digester between ...

Modelica has evolved as a powerful language for encoding models of complex systems. In control engineering, it is of interest to be able to analyze dynamic models using scripting languages such as MATLAB and Python. This paper illustrates some analysis and design methods relevant in control engineering through scripting a Modelica model of an anaerobic digester model using Python, and discusses...

Kegiatan Teknologi Tepat Guna ini bertujuan untuk membantu nagari dalam usaha membuka wawasan masyarakat, tentang Gas Bio sebagai bahan bakar. Aplikasi yang memanfaatkan limbah kotoran sapi menjadi bakar methan. Energi gas methan merupak energy terbarukan, tidak menimbulkan polusi di lingkungan tempat pembangkit digester bio. dapat sumber yaitu dengan system Digester bio dicampurkannnya air, se...

Pinogu sub-district is an organic area in Bone Bolango district, Gorontalo province with abundant cattle potential. Behind a large number of cows the area, new problem arises form cow manure scattered on streets. One technologies developed to overcome this introduction biogas as solution for utilizing which environmentally friendly renewable energy. The digester model produced tubular HDPE (hig...

Two representative thermophilic bacterial strains (T1 and T2) were isolated from a one-stage autothermal thermophilic aerobic digestion pilot-scale reactor. 16S rRNA gene analysis indicated that they were Hydrogenophilaceae and Xanthomonodaceae. These isolated strains were inoculated separately and/or jointly in sewage sludge, to investigate their effects on sludge stabilization under thermophi...

The present work provides an overview of technological measures to increase the self-sufficiency of wastewater treatment plants (WWTPs), in particular for the largely diffused activated sludge-based WWTP. The operation of WWTPs entails a huge amount of electricity. Thermal energy is also required for pre-heating the sludge and sometimes exsiccation of the digested sludge. On the other hand, the...