Quality assurance of densified biofuels from vineyard residues: case study for "Cabernet" and "Moldova" varieties cultivated in the Republic of Moldova

Abstract

In the context of efficiently utilizing available biomass resources, this study explores the possibility of ensuring the quality of pellets and briquettes produced from biomass obtained from vineyard residues, through a case study of the most widespread grape varieties in the Republic of Moldova – "Cabernet" and "Moldova." The aim of the study is to validate the proposed hypothesis, which focuses on the feasibility of producing densified solid biofuels made of biomass resulting from vineyard care, in all aspects covered by the ENplus certification system. The adopted methodology includes both statistical analyses based on data from the scientific literature and experimental investigations carried out in the Scientific Laboratory of Solid Biofuels at the Technical University of Moldova. The results indicated a promising potential of using vineyard residues for biofuel production, while adhering to ENplus quality standards. Additionally, the study highlights the need for implementing specific technological procedures to maximize yield and minimize losses throughout the entire production process. The conclusions emphasize the multiple benefits of utilizing vineyard residues, both from an economic and ecological perspective, contributing to the sustainable development of the viticulture industry and environmental protection.