Biomass has a large share in the energy generation matrix, due to the regional economic benefits. This work has as main objective to evaluate the parameters used in the manufacture of briquettes produced with forest residues and the economic engineering for the manufacturer. The forest residues were: wood chips and chips of Eucalyptus spp. and barks of Pinus taeda. The evaluations were the chemical characterization of forest residues and the costs involved in the briquetting process. The forest residues presented extractive chemical composition and lignin. The production costs of the briquettes were affected mainly by the equipment, being the Pinus taeda barks the one that presented higher production cost. However, the production costs obtained in this study are approximately 20% lower than the production costs using traditional methods for forest firewood. The energy value from biomass allows the reduction of the dependence of energy, which can be used for the generation of steam or electricity, for subsistence. A fact for energy conversion is to evaluate the material moisture. It is suitable to burn residues with moisture between 45 to 55%. The consumed electric energy is important to evaluate the total costs. The energy required depends on the quality of raw material and the system employed. Forest residues is an important source for eco firewood production, contributing to energy generation and decreasing of the solid waste stored at the company. In this way, the new parameters for briquetting biomass forest wastes shown in this work, which is an important stage of the process, make economically viable and environmentally suitable the eco firewood production.

Resumo: Na atualidade, existem discussões mundiais sobre o futuro do nosso planeta e de como nossas ações diárias vêm modificando os ecossistemas. A crescente degradação do meio ambiente traz consequências visíveis que se refletem na qualidade de vida da população. Sendo assim, estudos aplicados com objetivo de criar alternativas que contribuam para a conservação e restauração do meio ambiente vêm ganhando espaço no âmbito acadêmico e empresarial. Nesse sentido, o presente artigo busca contribuir apresentando as etapas para um projeto de desenvolvimento de um abrigo para passageiros de ônibus, feito com materiais recicláveis sob a ótica da sustentabilidade ambiental. A cidade de Bagé, localizada no Rio Grande do Sul, foi o cenário para o estudo de caso, visto que tem uma precariedade nos serviços de abrigo aos usuários de transporte público. Além disso, foi observado o acúmulo de materiais que podem ser reciclados e que acabam parando em locais como bueiros, arroios e outros. A presente pesquisa é aplicada e considerou as abordagens qualitativa e quantitativa para atingir os objetivos. Para desenvolver o projeto, foi selecionado um modelo referencial de desenvolvimento de produtos, que é dividido em macrofases e considera etapas como: pesquisas de mercado, análise econômico-financeiras, detalhamento de especificações sobre o produto e construção de um mockup. Os resultados apontaram que o modelo selecionado serve como guia fundamental para a geração de uma solução viável em termos sociais, ambientais e econômicos.Palavras-chave: Projeto. Processo de Desenvolvimento de Produto (PDP). Produto ecológico.Abstract: Currently, there are global discussions on the future of our planet and how our daily actions are changing ecosystems. The increasing degradation of the environment brings visible consequences that reflect the population's quality of life. Thus, studies applied in order to create alternatives that contribute to the conservation and restoration of the environment are becoming more popular in the academic and business scope. In this sense, this article seeks to contribute by presenting the steps to develop a project of a shelter for bus passengers, made with recyclable materials from the perspective of environmental sustainability. The city of Bage, located in Rio Grande do Sul, was the stage for the case study as it has precariousness of shelter services for public transport users. Furthermore, it has been observed the accumulation of materials which can be recycled and eventually end at locations such as culverts and other streams. This research is applied and considered the qualitative and quantitative approaches to achieve the goals. To develop the project, a reference model of product development has been selected, and is divided into macrophases considering steps such as market research, economic and financial analysis, specification details about the product and building a mock up. The results showed that the selected model serves as a fundamental guide for the generation of a viable solution for socia...

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