Bioenergy overview for Portugal

Ferreira, Sérgio; Moreira, Nuno; Monteiro, Eliseu

doi:10.1016/j.biombioe.2009.07.020

Cited by 50 publications

(21 citation statements)

References 12 publications

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“…The produced gas was sampled at the exit of the gas filter using Tedlar bags (CEL Scientific Corp., Cerritos, CA, USA) in intervals of 15 min during the one-hour test for each operational condition. Therefore, four produced gas samples were taken for each operational condition and analyzed in a Varian 450-GC (Scion, Austin, TX, USA) gas chromatograph with two thermal conductivity detectors, enabling the recognition of CO, CO 2 helium as carrier gases. The experimental results presented in this paper are the average of these four samples.…”

Section: Methodsmentioning

confidence: 99%

“…Forest and agriculture residues are the most common biomass resources available in Portugal [2,20,47]. Pine, eucalyptus, and cork are the species representative of the forest residues that are most abundant in Portugal [20,47].…”

Section: Syngas Quality Assessment For Various Biomass Substratesmentioning

confidence: 99%

“…Additionally, the limited availability of energy resources calls for new advantageous and creative solutions for safe energy supply. Bioenergy is considered one of the key options of the renewable energy field to mitigate greenhouse gas emissions, replace fossil fuels, and ensuring a more secure and sustainable energy system [2].…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Modeling Analysis of Brewers´ Spent Grains Gasification in a Downdraft Reactor

et al. 2019

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The first part of the current reported work presents experimental results of brewers’ spent grains gasification in a pilot-scale downdraft gasifier. The gasification procedure is assessed through various process characteristics such as gas yield, lower heating value, carbon conversion efficiency, and cold gas efficiency. Power production was varied from 3.0 to 5.0 kWh during the gasification experiments. The produced gas was supplied to an internal combustion engine coupled to a synchronous generator to produce electricity. Here, 1.0 kWh of electricity was obtained for about 1.3 kg of brewers’ spent grains pellets gasified, with an average electrical efficiency of 16.5%. The second part of the current reported work is dedicated to the development of a modified thermodynamic equilibrium model of the downdraft gasification to assess the potential applications of the main Portuguese biomasses through produced gas quality indices. The Portuguese biomasses selected are the main representative forest residues (pine, eucalyptus, and cork) and agricultural residues (vine prunings and olive bagasse). A conclusion can be drawn that, using air as a gasifying agent, the biomass gasification provides a produced gas with enough quality to be used for energy production in boilers or turbines.

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Section: Methodsmentioning

confidence: 99%

Section: Syngas Quality Assessment For Various Biomass Substratesmentioning

confidence: 99%

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Experimental and Modeling Analysis of Brewers´ Spent Grains Gasification in a Downdraft Reactor

et al. 2019

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“…Overall there is evidence supporting the expansion and promotion of electricity generated from biomass (Enersilva 2007;Evans et al 2010; Carneiro and Ferreira 2012;CAM 2013). In the particular case of Portugal, there is high potential for using this type of fuel (Ferreira et al 2009), especially because of the considerable forest area of 3.15 million hectares, representing 35.4 % of the national territory (ICNF 2013). Moreover, the use of FB as a fuel for energy purposes reduces the risk of forest fires, a major concern in Portugal, particularly in the summer season.…”

Section: Introductionmentioning

confidence: 99%

Using stated preference methods to assess environmental impacts of forest biomass power plants in Portugal

Botelho

Lourenço-Gomes

Pinto

et al. 2016

Environ Dev Sustain

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As a renewable energy source, the use of forest biomass for electricity generation is advantageous in comparison with fossil fuels, however the activity of forest biomass power plants causes adverse impacts, affecting particularly neighbouring communities. The main objective of this study is to estimate the effects of the activity of forest biomass power plants on the welfare of two groups of stakeholders, namely local residents and the general population and we apply two stated preference methods: contingent valuation and discrete choice experiments, respectively. The former method was applied to estimate the minimum compensation residents of neighbouring communities of two forest biomass power plants in Portugal would be willing to accept. The latter method was applied among the general population to estimate their willingness to pay to avoid specific environmental impacts. The results show that the presence of the selected facilities affects individuals' wellbeing. On the other hand, in the discrete choice experiments conducted among the general population all impacts considered were significant determinants of respondents' welfare levels. The results of this study stress the importance of performing an equity analysis of the welfare effects on different groups of stakeholders from the installation of forest biomass power plants, as their effects on welfare are location and impact specific. Policy makers should take into account the views of all stakeholders either directly or indirectly involved when deciding crucial issues regarding the sitting of new forest biomass power plants, in order to achieve an efficient and equitable outcome.

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“…The bioenergy potential for Portugal has been assessed in several works (Ericsson and Nilsson, 2006;Ferreira et al, 2009;de Wit and Faaij, 2010), revealing that there are still untapped biomass resources in the country. Adding to these studies, others with a more specific and/or regional scope have also been published for the country.…”

Section: Introductionmentioning

confidence: 99%

Biomass residues for energy production and habitat preservation. Case study in a montado area in Southwestern Europe

Malico

Carrajola

Gomes

et al. 2016

Journal of Cleaner Production

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a b s t r a c tThe use of forest and agricultural residues for energy production presents multiple benefits, but the link between bioenergy and the environment is complex and not all of the energetic options have the same impacts. This work evaluates the net positive effect of valorizing residual biomass in the context of a rural area of Portugal, Estremoz. It focuses on the combined assessment of biomass availability, technoeconomic feasibility and environmental aspects of utilizing forest and agricultural residues to produce bioheat. At first, the energy potential of the residual biomass available in the municipality is evaluated using a geographical information system database. The assessment with RETScreen of the technoeconomic feasibility of replacing electricity by biomass for heating local public schools follows. The results show that around 27 314 t of residues, corresponding to about 267 680 GJ, are produced each year in Estremoz, more than half in montado areas. The use of this biomass for the replacement of the existing electric heating systems of nine local schools by biomass-based ones offers good project profitability. As far as the environment is concerned, the energetic valorization of the residual biomass in Estremoz has multiple benefits. It contributes to climate change mitigation by saving greenhouse gas emissions and promoting the preservation of the traditional extensive uses of the ecosystems. Moreover, a correct vegetation management decreases the fire risk, potentiates the increase in biodiversity, offers better conditions for native species and allows to maintain the ecosystems.

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Bioenergy overview for Portugal

Cited by 50 publications

References 12 publications

Experimental and Modeling Analysis of Brewers´ Spent Grains Gasification in a Downdraft Reactor

Experimental and Modeling Analysis of Brewers´ Spent Grains Gasification in a Downdraft Reactor

Using stated preference methods to assess environmental impacts of forest biomass power plants in Portugal

Biomass residues for energy production and habitat preservation. Case study in a montado area in Southwestern Europe

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