Purificación de glicerol obtenido por transesterificación

The production of biodiesel in Mexico represents a strategic opportunity to diversify the national energy matrix, reduce dependence on fossil fuels, and contribute to climate change mitigation. Utilizing feedstocks such as used cooking oil not only promotes a renewable energy source but also addresses a significant environmental issue related to the improper disposal of these wastes, which can negatively impact soils and water bodies. Glycerol is a fundamental by-product in the production of biodiesel, generated during the process of transesterification of vegetable oils or animal fats with methanol. For every 100 kg of biodiesel produced, between 4 and 10 kg of crude glycerol is obtained, composed of 80-88% glycerin plus impurities such as methanol, catalysts, soaps and salts. Its purification and use is key for several reasons: If it is not reused, it can become a problematic waste, its use contributes to the circular economy, reduces the environmental impact of the biodiesel production process, generates added value that allows diversifying the income of a producción plant, reduces production costs, which not only improves the economic viability of the biofuel, but also encourages greener practices.