Considering the constraints due to unavailability of uniform quality chicken manure in local market, three different combinations of wheat and soyabean meal (de-oiled cake) were tested for their ability to affect yield and cost of production of Button Mushroom (Agaricus bisporus). Compost was prepared by mixing 18, 22 and 25% soyabean meal with wheat straw by short method of composting. 80% chi...

the limitation of energy resources and its considerable consumption growth in iran has doubled the necessity of optimization and conservation of energy in the country compared to the average consumption rate of energy in the world and also because of high consumption rate's adverse effects in the environment. heating systems are among the main consumers of energy and using a high efficienc...

Cultivating algae on nitrogen (N) and phosphorus (P) in animal manure effluents presents an alternative to the current practice of land application. The objective of this study was to determine values for productivity, nutrient content, and nutrient recovery using filamentous green algae grown in outdoor raceways at different loading rates of raw and anaerobically digested dairy manure effluent...

In the present study, thermo-economic analysis of a combined solid oxide fuel cell (SOFC) with a gas turbine, a generator-absorber heat exchanger (GAX) and heating process heat exchanger for heating, cooling and power production as a tri-generation system is conducted. Also, an external steam reformer is applied to convert methanol as oxygenated fuel to hydrogen for the electrochemical process ...

In most small-scale farms in sub-Saharan Africa, net negative balances of nutrients result when nutrients are removed from the farm by harvested crops, because farmers cannot afford inorganic fertilizers. A key resource that could be useful in reversing this trend is manure from livestock. The N, P, K, Ca, Mg, Fe, Mn, Cu and Zn contents of manures collected from six experimental stations and tw...