Chromatographic characterization of pyroligneous liquid obtained from carbonization of peach stone

Abstract

The peach stone is considered an agroindustrial residue originating from the industrial process of peach in halves in syrup. It does not have an adequate destination, its final disposal is incorrect and may cause contamination in the environmental compartments. In this way, the burning of this raw material as biomass enables its reuse, besides adding value to the residue. Among the processes used for the application of this residue is the carbonization process, which allows to obtain co-products with higher added value, such as pyroligneous liquid, which represents a fraction of organic compounds condensed from the smoke emitted during carbonization. The quality of the liquid depends on the process conditions and the biomass used. Therefore, the objective of this study was to characterize the sample of pyrolignous liquid obtained from the carbonization of the peach stone, on an industrial scale, qualitative and semi quantitative. Preliminary characterization (pH, conductivity, color, density and contents of tar, organic matter and acidity) and a chemical characterization by gas chromatography coupled to mass spectrometry (GC-MS) were performed. The liquid presented satisfactory results for the physico-chemical evaluations. Regarding the qualitative determination, it was possible to identify 49 compounds. Highlighting the phenols, with 44.90% of the number of compounds, mainly methoxyphenols. These are compounds with significant added value and industrial importance, indicating their use as raw material in the production of polymer resins, among other purposes.

Estudo comparativo dos bio-óleos obtidos por pirólises rápida e lenta do caroço de pêssego

“…As classes de ácidos, álcoois, aldeídos, cetonas e fenóis também foram encontradas em outros estudos de pirólise rápida e carbonização com caroço de pêssego (MORAES et al, 2012;VALADÃO;DUARTE;SANCHES FILHO, 2019). Esses são prováveis dado o produto de decomposição da hemicelulose que compõe o CP.…”