Abstract

BETANCOURT-AGUILAR, Carmen; MELLO-PRADO, Renatode; CASTELLANOS-GONZALES, Leónides  and  SILVA-CAMPOS, Cid N.. Glycerin as byproduct of biodiesel production, its characteristics, applications and soil use. cultrop [online]. 2016, vol.37, n.3, pp. 7-14. ISSN 1819-4087.  http://dx.doi.org/10.13140/RG.2.1.4329.2403.

Biofuels, such as bioethanol and biodiesel, represent attractive energy sources because they are made from renewable materials. Crude Glycerol is the major byproduct of the biodiesel industry.; about 2 million tons of glycerol consistently reaches the market every year, consequently several research efforts being made in order to find ways for utilizing glycerol. The aim of this work was to carry out an up-to-date revision of the information related to the characteristics of this glycerol and its general applications with emphasis on its use in the soil. The characterization of crude glycerol from biodiesel production, for different research worker, revealed heterogeneous results on the composed of each variable and its intervals. A total application of this glycerol that have already studied, demand a deep consideration in each characterization. Aspects like row materials employed in the biodiesel process production and methods of purification used by producers should pay particular attention. The use of glycerol seems to be a convenient way for increasing soil fertility, by increasing the amount of microorganisms; main fixed nitrogen microorganism, however, issue like the glycerol characteristic (saline contents, pH, methanol contents), and the applications frequency most be taking in to account

Keywords : organic matter; microorganisms; nitrogen fixation.

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