Biotechnology can be used to convert waste into valuable products. In this context, there is bacterial cellulose (BC), a natural biopolymer that transformed several useful materials, but its production limited due the high cost of culture media for industrialization. work, BC was produced from bacteria Komagataeibacter rhaeticus, using coffee grounds, sugarcane molasses and ethanol. The experim...

Brazil is the second largest producer of ethanol in the world and the first in the technology of ethanol from sugar cane. The Brazilian bioprocess of ethanol production is based on molasses or cane juice substrate. Currently, a fed-batch or continuous or mixed process is operated with a stable cell recycle and high yeast concentration. The ethanol efficiency is controlled by several industrial ...

atmospheric nitrogen fixation as an exclusive phenomenon is accomplished by nitrogenase enzyme of prokaryotic microorganisms namely diazotrophs including bacteria, actinomycets and cyanobacteria. nitrogen fixation is accomplished as form of symbiotic, associative and free-living systems. in free-living systems nitrogen is fixed without the help of plants. azotobacter, the first diazotroph was d...

background: the disposal the wastewater sugar extraction to the rivers and environment cause contamination and is considered as a threat to the marine life and the environment. thus, treatment of the wastewater is necessary. investigating the reduction of the pollution load of cane industry with anaerobic sequencing batch biofilm reactor (asbbr) in the laboratory scale is the purpose of this st...