Thermal Treatment to Obtain 5-Hydroxymethyl Furfural (5-HMF), Furfural and Phenolic Compounds from Vinasse Waste from Agave

Abstract

Vinasses represent important final disposal problems due to their physical-chemical composition. This work analyzed the composition of tequila vinasses and increased 5-hydroxymethylfurfural, furfural, and phenolic compounds using thermal hydrolysis with hydrogen peroxide as a catalyst. A statistical Taguchi design was used, and a UPLC-MS (XEVO TQS Micro) analysis determined the presence and increase of the components. The treatment at 130 °C, 40 min, and 0.5% of catalyst presented the highest increase for 5-HMF (127 mg/L), furfural (3.07 mg/L), and phenol compounds as chlorogenic (0.36 mg/L), and vanillic acid (2.75 mg/L). Additionally, the highest removal of total sugars (57.3%), sucrose (99.3%), and COD (32.9%). For the treatment T130:30m:0P the syringic (0.74 mg/L) and coumaric (0.013 mg/L) acids obtained the highest increase, and the treatment T120:30m:1P increased 3-hydroxybenzoic (1.30 mg/L) and sinapic (0.06 mg/L) acid. The revaluation of vinasses through thermal treatments provides guidelines to reduce the impact generated on the environment.

Isotherm Adsorption of Ion Phosphate from Vinasse Waste Using Quaternary Ammonium Polymer as Adsorbent in Term Effect of Temperature

“…Vinasse is a liquid waste produced at a sugar factory during the ethanol distillation process, typically involving a heating procedure ranging from 85 to 90 ℃ (Moraes et al, 2015). Vinasse waste contains the following: water, esters, alcohols, phenolic compounds, fermented sugars, organic acids, and furans (Lorenzo-Santiago et al, 2023). According to Álvarez (2021), vinasse contains high organic matter, high lipid concentration, low pH, and high COD and BOD content (Hoarau et al, 2018).…”