Effectiveness and mechanisms of crude glycerol on the biofuel production from swine manure through hydrothermal pyrolysis

Formation of Glycerol as Byproduct and its Application During Biodiesel Production From Pongamia Pinnata

“… Co-hydrothermal pyrolysis and co-liquefaction of manure with crude glycerol could improve the production yield of bio-oil. However, for the co-liquefaction, too much addition of crude glycerol affected the carbon content and heat value of the bio-oil [8,9].  In food and beverages, glycerol serves as a solvent, and sweetener, and may help preserve foods.…”

“… Glycerol and water are used to preserve certain types of leaves. [9]  Glycerol is used in medical and pharmaceutical and personal care preparations, mainly It is found in allergen immunotherapies, cough syrups, elixirs and expectorants, toothpaste, mouthwashes, skin care products, shaving cream, hair care products, soaps and water-based personal lubricants.  In solid dosage forms like tablets, glycerol is used as a tablet holding agent.…”

Valorization of agroindustrial solid residues and residues from biofuel production chains by thermochemical conversion: a review, citing Brazil as a case study

“…It would definitely add value to the entire process and may be the key factor to make the entire process economically feasible. Xiu et al (2010) performed a series of laboratory scale experiments in a high-pressure batch reactor fed with mixtures of swine manure and crude glycerol (added as a co-substrate) at various ratios to produce bio-oil. The results indicated that cohydrothermal pyrolysis of manure with crude glycerol or free fatty acid makes it possible to obtain a relatively high yield of bio-oil at a moderately high temperature.…”

Biorefinery Processes for Biomass Conversion to Liquid Fuel

“…Crude glycerol, the low-value by-product of biodiesel production, has shown very promising results for being using as an SCF solvent. Glycerol has been used as an organic solvent for biomass delignification (Demirbaş, 2008;Demirbaş and Celik, 2005a;Kücük, 2005), bio-oil separation and to significantly improve the performance of liquefaction in the conversion of biomass into bio-oil (Demirbaş, 2000b;Xiu et al, 2010c;Gan et al, 2010). Xiu et al found that cross-reactions between swine manure and crude glycerol significantly affected the hydrothermal process, and that the use of crude glycerol dramatically increased bio-oil yield from 23.9% to 70.92% (Xiu et al, 2010c, Fig.4).…”