Chemical quantitative characterization of biomass is relevant for waste to energy recovery technologies. In the present work, selected agroindustry solid residues from coffee cropsparchment and coffee shrub, i.e., stem, branches and leaveswere characterized. Properties such proximate, ultimate and biochemical composition, energy content, and thermogravimetric analysis, were evaluated. Results showed high values of higher heating value and volatile matter content. The silica contents are small for all samples. Additionally, the high content of extractives and lignin, reveal that these residual biomasses are more suitable for charcoal than cellulose pulp production. The extensive residue characterization provided valuable data that helped in outcome of the evaluation of different conversion technologies as being an environmentally friendly alternative, contributing to sustainable, reliable, carbon-neutral form of modern energy and upgrade the *Manuscript Click here to view linked References 2 large quantity of waste generated by the coffee industry into energetically valued residues, by improving their management.

Concerns about climate change and other issues mostly related to the reduction of fossil fuel usage have increased the demand for renewable energy sources. The possibility of using lignocellulosic biomass for energy generation is gaining interest in many countries worldwide. The current paper presents the analysis of physicochemical characteristics of nine lignocellulosic biomasses: five types of eucalyptus wood chips, sugar cane bagasse, elephant grass, bamboo, and coconut husk. Selection of a thermal conversion technology depends on the knowledge of important biomass characteristics in relation to thermal conversion: density and productivity, proximate and ultimate analysis, heating value, ash and polysaccharides composition, and thermogravimetric analysis. With regard to the annual energy potential and density, it was suggested that Eucalyptus urophylla (Flores IP) × E. urophylla (Timor) and bamboo have the greatest potential for energy application, which reduces transport and storage costs. Moreover, the eucalyptus has desirable characteristics in thermal conversion processes: low ash content that results in lesser damage to the equipment and low content of sulfur and nitrogen that leads to better environmental performance and product quality. The obtained information could be used as a basis for a more comprehensive database of biomass properties that will help to evaluate various biomasses with respect to the renewable energy potential.

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