Current status, hurdles and future prospects of LiMa fish feed machine
2017-1-1 · Numerous factors contribute to the productivity of the AD process. These include the microbial population used in the process and the source of this population (e.g. cow or pig manure) , the pH , , temperature , redox potential and presence of toxic components (e.g. ammonium, volatile fatty acids, heavy metals, cyanide, etc.) in the digester and the carbon to nitrogen mass ratio of the feedstock .