Many developing countries are encouraging for the installation of biogas plants to meet out the demand of fuel. India is one of the pioneer countries in biogas technology. U.P. Government in the years 1957 and 1960 established a permanent station named 'Gobar gas Research Station' at Ajitmal in Etawah district. There are many other institutions where research and development programmes [...]
In this article we will discuss about some examples of leaching. 1. Copper Leaching: Copper leaching is practical, feasible and in use throughout the world for many years. In this process, the leaching solution contains sulphate and iron carries the microbial nutrients in and dissolved copper out. The copper containing solution is precipitated. About 5-6% of the world copper production [...]
Anaerobic digestion is accomplished in three stages, solubilisation, acidogenesis and methanogenesis. Stage # 1. Solubilisation: It is the initial stage when feed stock is solubilized by water and enzyme. The feed stock is dissolved in water to make slurry. The complex polymers are hydrolysed into organic acids alcohols by hydrolytic fermentative methanogenic bacteria which are mostly anaerobes (Fig. 33.3A). Stage [...]