Anaerobic digestion (AD) of biowastes is one of the most common ways to produce methane-rich biogas, which has considerable potential to replace the fossil fuel used in multiple applications, such as vehicular transportation, internal combustion engines, cogeneration of heat and power systems and many other systems. Many companies are involved in the design and construction of anaerobic digesti...

In this study, temperature variations in a mesophilic anaerobic reactor were used to control the reactor degradation capacity. When the reactor temperature was periodically changed from 32°C to 46°C with a period of 12 h, a near liner increase in methane production in response to temperature augmentation was observed. Furthermore, when the reactor temperature was increased during increased orga...

upflow anaerobic sludge blanket (uasb) reactors have been widely used for treatment of industrial wastewater. in this study, performance of a lab-scale up-flow anaerobic sludge blanket (uasb) reactor, treating a chemical synthesis-based pharmaceutical wastewater, was evaluated under different operating conditions. a (p.e) pipe with a diameter of 250 mm and total height of 120 cm and effective h...

Introduction Wastewater from high-rise buildings such as shopping malls or office buildings play important role in generating large volume of wastewater. These buildings have much higher water consumption rate than typical houses. Also, high loading of organic matters and nutrients in wastewater such as nitrogen and phosphorus can deteriorate water quality of aquatic environment together. Up to...

BACKGROUND Biotechnological screening processes are performed since more than 8 decades in small scale shaken bioreactors like shake flasks or microtiter plates. One of the major issues of such reactors is the sufficient oxygen supply of suspended microorganisms. Oxygen transfer into the bulk liquid can in general be increased by introducing suitable baffles at the reactor wall. However, a comp...

One of the main challenges for one phase anaerobic digestion processes is the high concentration of NH4 and PO4 ions in the digested sludge supernatant. This project focuses on enhancing the removal of nutrients during the anaerobic digestion process through fixing both NH4 and PO4 ions in the form of struvite (magnesium ammonium phosphate, MAP, MgNH4PO4.6H2O) within the anaerobic sludge. Batch...