Early growth of invasive acacias as a potential biomass-for-energy source under Mediterranean conditions

Carneiro, M.; Moreira, R. N.; Gominho, Jorge; Abreu, F. G.; Fabião, António

doi:10.1504/ijarge.2016.076901

Cited by 6 publications

(7 citation statements)

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“…In addition, the distribution and productivity of A. dealbata are expected to continue increasing in this area (Hernández et al, 2014), especially in pine forests, with 900 new individuals per hectare and year (Rodríguez et al, 2017), which can provide abundant plant material. In Portugal, the expansion and high productivity of some invasive Acacia species ( A. dealbata, A. melanoxylon and A. pycnantha ) have led to consider them as potential biomass sources (Carneiro et al, 2014). Although specific productivity data for A. longifolia is not available, Brito et al (2015b) indicated that this species could be used as a renewable source due to the high availability of its biomass in NW of the Iberian Peninsula.…”

Section: Discussionmentioning

confidence: 99%

Exploring the use of residues from the invasive Acacia sp. for weed control

Souza‐Alonso

Puig

Pedrol

et al. 2018

Renew. Agric. Food Syst.

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A sustainable practice for weed control and crop protection is the incorporation of green manures with phytotoxic potential. It is gaining attention as a way to reduce the use of synthetic herbicides in agriculture and so pot experiments and field trials were conducted to explore the possible use of residues of Acacia species to alleviate weed emergence. We assessed, under greenhouse conditions, the herbicidal effect of phytotoxic manures from Acacia dealbata and Acacia longifolia applied to soil at different doses (1.5 and 3% w/w) on maize growth, some accompanying weeds, and the physiological profile of soil microbes. Applied at a higher dose, A. dealbata residues reduced the emergence of dicotyledons in the short-term (P < 0.05) and, after 30 days, there was a decrease in total weed emergence (P < 0.005) and a mild effect on weed composition, while total weed biomass remained unaffected. Regardless of the inclusion of Acacia residues, the physiological profile of the soil bacterial community did not show significant alterations. Additionally, we tested A. dealbata residues as a mulch or a green manure at the field scale. Although the effects of manures were site-dependent and affected monocot and dicot weeds differentially, dicots were more sensitive. The herbicide potential of acacia residues was only evident for dicots at sites with low-weed density in the seed bank. Nevertheless, due to the absence of phytotoxic effects on maize and minor modifications in the functional profile of bacterial communities, residues of acacia could be used as a complementary tool used together with other practices to reduce the reliance on synthetic herbicides in maize-based cropping systems.

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Section: Discussionmentioning

confidence: 99%

Exploring the use of residues from the invasive Acacia sp. for weed control

Souza‐Alonso

Puig

Pedrol

et al. 2018

Renew. Agric. Food Syst.

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“…Two liquid biofuels that can be produced from Acacia dealbata [263] are bioethanol [303,304] and bio-oil. Some studies researched the implementation of acacia for bioproducts and biofuels production in a biorefinery-type system, either from the residual material of the species [305] or from all constituent parts of the species [306]. Muñoz et al, 2007 studied the pre-treatment with two fungi (Ceriporiopsis subvermispora and Ganoderma australe) maintained at a temperature of 27 • C, moisture of 55% for 30 days, and the organosolv delignification was performed at 200 • C, with 60% of ethanol for 1 h. In this first phase, the pulp yield in the case of acacia was between 31% and 51% and obtained 93% of glucan and 2% of lignin.…”

Section: Acacia (Acacia Dealbata L)mentioning

confidence: 99%

Low Indirect Land Use Change (ILUC) Energy Crops to Bioenergy and Biofuels—A Review

et al. 2022

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Energy crops are dedicated cultures directed for biofuels, electricity, and heat production. Due to their tolerance to contaminated lands, they can alleviate and remediate land pollution by the disposal of toxic elements and polymetallic agents. Moreover, these crops are suitable to be exploited in marginal soils (e.g., saline), and, therefore, the risk of land-use conflicts due to competition for food, feed, and fuel is reduced, contributing positively to economic growth, and bringing additional revenue to landowners. Therefore, further study and investment in R&D is required to link energy crops to the implementation of biorefineries. The main objective of this study is to present a review of the potential of selected energy crops for bioenergy and biofuels production, when cultivated in marginal/degraded/contaminated (MDC) soils (not competing with agriculture), contributing to avoiding Indirect Land Use Change (ILUC) burdens. The selected energy crops are Cynara cardunculus, Arundo donax, Cannabis sativa, Helianthus tuberosus, Linum usitatissimum, Miscanthus × giganteus, Sorghum bicolor, Panicum virgatum, Acacia dealbata, Pinus pinaster, Paulownia tomentosa, Populus alba, Populus nigra, Salix viminalis, and microalgae cultures. This article is useful for researchers or entrepreneurs who want to know what kind of crops can produce which biofuels in MDC soils.

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“…Its production to obtain heat or power by thermochemical processes can be an easy way to retrieve some value from Acacia spp. residues and mitigate eradication costs [14], instead of being landfilled or left in place, but more investigation must be made to access combustion, gasification or pyrolysis properties when using the Portuguese acacias.…”

Section: Energy From Acacia Spp and Biorefinery Approachesmentioning

confidence: 99%

“…The valorization of some Acacia spp. for energy may have a positive contribution to the economic sustainability of the involved operations [14], but this option is often limited due to collection and transportation costs. However, finding high-value applications for these species can contribute to overcome these costs and make the process economically sustainable.…”

Section: Introductionmentioning

confidence: 99%

Insights for the Valorization of Biomass from Portuguese Invasive Acacia spp. in a Biorefinery Perspective

Correia

Quintela²,

Duarte

et al. 2020

Forests

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Acacia spp. are widespread all over the Portuguese territory, representing a threat to local biodiversity and to the productivity of the forest sector. The measures adopted in some countries for their eradication or to control their propagation are expensive, have been considered unfeasible from practical and economical perspectives, and have generated large amounts of residue that must be valorized in a sustainable way. This review brings together information on the valorization of bark, wood, leaves, flowers, pods, seeds, roots, and exudates from Acacia spp., through the production of high-value bioactive extracts (e.g., antioxidant, antimicrobial, anti-inflammatory, antidiabetic, antiviral, anthelmintic, or pesticidal agents, suitable to be explored by pharmaceutical, nutraceutical, cosmetics, and food and feed industries), its incorporation in innovative materials (e.g., polymers and composites, nanomaterials, low-cost adsorbents), as well as through the application of advanced thermochemical processes (e.g., flash pyrolysis) and pre-treatments to decompose biomass in its structural components, regarding the production of biofuels along with valuable chemicals derived from cellulose, hemicellulose, and lignin. The knowledge of this research is important to encourage an efficient and sustainable valorization of Acacia spp. within a biorefinery concept, which can bring a significant economic return from the valorization of these residues, simultaneously contributing to forest cleaning and management, to reduce the risk of fires, and to improve the social-economic development of rural areas.

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Early growth of invasive acacias as a potential biomass-for-energy source under Mediterranean conditions

Cited by 6 publications

References 0 publications

Exploring the use of residues from the invasive Acacia sp. for weed control

Exploring the use of residues from the invasive Acacia sp. for weed control

Low Indirect Land Use Change (ILUC) Energy Crops to Bioenergy and Biofuels—A Review

Insights for the Valorization of Biomass from Portuguese Invasive Acacia spp. in a Biorefinery Perspective

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