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Avaliação do potencial da madeira de poda da videira para fins de valor acrescentado

Authors: Vieira, Joana Filipa Carvalho;

Avaliação do potencial da madeira de poda da videira para fins de valor acrescentado

Abstract

Os subprodutos da vinha são resíduos agrícolas abundantemente disponíveis em Portugal. O sector vitivinícola é um dos sectores mais representativos da economia agrícola, sendo a vinha e o olival as duas culturas permanentes dominantes em Portugal. Da atividade vitivinícola resultam várias toneladas de subprodutos entre os quais se destaca a madeira de poda de videira, o subproduto da vinha disponível em maior quantidade (massa). Os objetivos do presente trabalho consistiram na quantificação da madeira de poda de videira produzida a nível nacional (Portugal Continental) e na proposta de soluções para aproveitamento do subproduto em questão. A quantificação da madeira foi efetuada recorrendo a pesquisas realizadas junto de empresas e entidades do ramo vitivinícola. Por outro lado, a proposta de soluções de aproveitamento da madeira de poda foi feita recorrendo a exemplos estudados/implementados em Portugal e/ou noutros países, não só para este tipo de subprodutos como para outros semelhantes (como por exemplo: poda de oliveira e madeira florestal). Pelo que a presente dissertação é baseada em pesquisa e análise de dados existentes e posteriormente tratamento dos mesmos (se aplicável). Atualmente, a madeira de poda de videira representa maioritariamente uma perda de recursos e em muito dos casos acarreta para o produtor, um custo sem qualquer retorno. Para procurar soluções que permitissem conferir valor acrescentado a este subproduto da vinha, primeiramente, realizou-se um levantamento da quantidade de madeira de poda resultante das vinhas a nível nacional por NUTS II de forma a determinar a sua dispersão no território, tendo-se obtido um valor estimado de 974 mil toneladas. Seguidamente, foram estudadas três possibilidades de aproveitamento da madeira de poda: produção de Biochar, produção de biocombustíveis e produção de energia em centrais de biomassa. Para cada uma das possibilidades de aproveitamento avaliadas, foi feita uma análise da implementação de um polo industrial de conversão do subproduto num produto de valor acrescentado, tendo em conta os locais de maior produção de madeira de poda no país, as vias de transporte disponíveis e ainda o custo associado ao seu transporte. Foi ainda analisado o aproveitamento das indústrias existentes na periferia das regiões vitivinícolas de modo a avaliar a sustentabilidade do processo tanto a nível económico como ambiental.

Vine by-products are agricultural residues abundantly available in Portugal. The winemaking sector is one of the most important areas of the Portuguese agriculture economy. The vineyards alongside olive groves are the two dominant permanent crops in Portugal. The winemaking activity creates several tons of by-products, among those there is the vine pruning wood, which is the biggest by-product created in this activity. The aim of the present dissertation is to quantify the available vine pruning wood at national level (Mainland Portugal) and to propose solutions for its use as a by-product. Moreover, the proposal solutions for pruning wood uses were based into studied/implemented examples in Portugal and/or in other countries, not only for this type of by-products but for similar ones (such as: olive pruning and forest wood). Therefore, the present dissertation was based on the research and analysis of existing data and the later treatment of them (if applicable). So far, vine pruning represents a great loss of resources and in most cases an unavoidable cost for the producer. In order to find solutions to add value to this by-product, surveys were carried out to determine the amount of pruning wood available at a NUTS II level. The surveys were done at the NUTS II level in order to determine their dispersal in the country. From the surveys, it was possible to estimate 974 tons of vine pruning wood available at national level. Then, three solutions for the pruning wood were studied: Biochar production, biofuel production and energy production in biomass plants. For each of the solutions, studies were carried out regarding the feasibility of the proposed processing plants to convert the by-product in an added value product. The studies analyzed the places with the greatest pruning wood production in the country, the transport routes available and the cost associated with shipping. It was also studied the use of industries near the wine regions to evaluate the sustainability of the process at both economic and environmental level.

Country
Portugal
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Keywords

By-products, Valor industrial, Vineyard, Economical potential, Vinha, Sustainability, Sustentabilidade, Domínio/Área Científica::Ciências Agrárias::Biotecnologia Agrária e Alimentar, Subprodutos, Industrial value, Potencial económico

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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