Abstract

Concerns over the past few decades have focused, more than ever, on finding and implementing efficient, handy, and renewable sources to reduce pollution. Biomass, in general, and biomass from annual vine cuttings, are renewable sources that can be used by a large amount of the population. Biomass densification in the form of briquettes is an efficient method of obtaining a biofuel with the same characteristics as wood. The production of densified material as a briquette consists of sampling, drying naturally, chopping, grinding and briquetting the vine cuttings. The obtained results showed that the size of the briquettes met the requirements imposed by the standard, with a length between 185 mm and 400 mm and a diameter of 58 ± 0.75 mm, the humidity of the briquettes varying between 5.42%, at Sauvignon Blanc and 7.98% for Pinot Noir, while the durability of the briquettes registered minimum values of 98.17% for Muscat Ottonel and a maximum of 99.14% for Feteasca Neagra, and a unit density with values between 1227 kg/m3 for Feteasca Alba and 1389 kg/m3 for Pinot Noir. The conclusions of these experiments are promising, showing that the densification of biomass from vines cuttings qualifies within the standard requirements for obtaining a valuable biofuel.

Highlights

  • Published: 16 August 2021In recent decades, the dependence on fossil fuels has become critical due to several factors: the continuous growth of population, urbanization, depletion of oil reserves, continuous increase in oil price, global warming

  • The tendrils resulting from the dormant pruning of vines are an important source of renewable energy, with high calorific value, and are able to satisfy an important part of the energy needs of the present and future generations

  • The present study evaluated the technological phases for the production of densified biomass in the form of briquettes

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Summary

Introduction

Published: 16 August 2021In recent decades, the dependence on fossil fuels has become critical due to several factors: the continuous growth of population, urbanization, depletion of oil reserves, continuous increase in oil price, global warming. Non-renewable fuel (coal, natural gas, coal)-dependent industries have caused a dramatic increase in greenhouse gas emission effects and this has resulted in high levels of environmental pollution [1,2,3,4,5] This crisis has stimulated the use of renewable energy resources like solar, wind and geothermal energy, biomass, and agricultural wastes. These energy sources are available anywhere and are well known as alternative energy resources; in the meantime, they are an ecological solution for energy production [2,4,6,7,8,9]. This clean and inexhaustible energy has the potential to reduce environmental pollution; its full potential is yet unattained due to manipulation, transportation, storage and combustion-related problems [10].

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