Evaluación de Ulmus pumila L. y Populus spp. como cultivos energéticos en corta rotación

García, Ignacio Pérez

doi:10.20868/upm.thesis.40881

Cited by 2 publications

(3 citation statements)

References 62 publications

(115 reference statements)

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“…However, our estimation situates the Ademuz elm clone in a similar yield potential than the Populus clone I-214 growing under deficient short-rotation management scenarios in terms of weed control and irrigation management (10.9 Mg DM/ha/year), but lower than the same clone growing under standard management scenario (15.3 Mg DM/ha/year) [36]. Furthermore, Ademuz elm clone seems to have a higher biomass yield potential than the Siberian elm (Ulmus pumila), which yielded around 8 Mg DM/ha/year in Spain [14]. The potential of Ademuz elm clone to be According to our estimation, maximum yield of trunk biomass was reached in Madrid in the plots with 1 × 1 m spacing (Figure 4), with an average yield of 9.3 Mg DM/ha/year if harvesting is performed in the third year, and of 9.0 Mg DM/ha/year in the fourth year.…”

Section: Estimation Of Wood Biomass Yieldmentioning

confidence: 86%

“…For instance, the Siberian elm (Ulmus pumila L.) is a species native to the Tarim and Gobi deserts which shows a remarkable tolerance to aridity [12], while maintaining outstanding growth rates. These qualities, together with its good tolerance level to Dutch elm disease (DED), a fungal disease which has decimated native elm populations in Europe and North America [13], make Siberian elm a good candidate for bioenergetic crop in short-rotation coppice under Mediterranean climates [14]. As an alternative to the Siberian elm, the field elm (Ulmus minor Mill.…”

Section: Introductionmentioning

confidence: 99%

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Obtaining Fermentable Sugars from a Highly Productive Elm Clone Using Different Pretreatments

Ibarra¹,

Martín‐Sampedro

Jiménez-López

et al. 2021

Energies

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The interest of supplying lignocellulosic materials for producing fermentable sugars has recently emerged in order to diminish the negative environmental effects of fossil fuels. In this study, the Ulmus minor clone Ademuz, characterized for its tolerance to Dutch elm disease and its rapid growth, was evaluated as a source of fermentable sugars. For that, different pretreatments, comprising autohydrolysis, dilute acid hydrolysis, acid catalyzed organosolv, and alkaline extraction, were evaluated at two levels of severity (pretreatment temperatures at 160 °C and 180 °C, except for alkaline extraction at 80 °C and 160 °C); and the resulting pretreated materials were enzymatically hydrolyzed for fermentable sugars production. The major extraction of lignin and hemicellulose was achieved during organosolv (48.9%, lignin; 77.9%, hemicellulose) and acid hydrolysis (39.2%, lignin; 95.0%, hemicellulose) at 180 °C, resulting in the major enzymatic digestibility (67.7%, organosolv; 53.5% acid hydrolysis). Contrarily, under the most favorable conditions for autohydrolysis (180 °C) and alkaline extraction (160 °C), lower extraction of lignin and hemicellulose was produced (4.8%, lignin; 67.2%, hemicellulose, autohydrolysis; 22.6%, lignin; 33.1%, hemicellulose, alkaline extraction), leading to lower enzymatic digestibility (32.1%, autohydrolysis; 39.2%, alkaline extraction). Taking into account the sugars produced during enzymatic hydrolysis of pretreated materials and the solubilized sugars from pretreatment liquors, the highest sugars (glucose and xylose) yield production (28.1%) per gram of biomass from U. minor clone Ademuz was achieved with acid catalyzed organosolv at 180 °C.

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Section: Estimation Of Wood Biomass Yieldmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Obtaining Fermentable Sugars from a Highly Productive Elm Clone Using Different Pretreatments

Ibarra¹,

Martín‐Sampedro

Jiménez-López

et al. 2021

Energies

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“…These characteristics, together with its rapid growth, have contributed to the development of a very extensive clonal offer, which requires the prior selection of each site and specific use. However, this genus requires wet soils, while R. pseudoacacia and U. pumila are alternatives due to their great drought tolerance [18,19,32], but they must be managed with care since they can become invasive and alter the native plant habitats [33,34]. Ulmus pumila and Robinia pseudoacacia have not been subjected to advanced genetic improvement programs, nor do they offer selected clonal plants.…”

Section: Introductionmentioning

confidence: 99%

Biomass Yield and Economic, Energy and Carbon Balances of Ulmus pumila L., Robinia pseudoacacia L. and Populus × euroamericana (Dode) Guinier Short-Rotation Coppices on Degraded Lands under Mediterranean Climate

Alesso

Tapias

Alaejos

et al. 2021

Forests

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The steadily increasing demand for energy and concerns about climate change have prompted countries to promote the use of renewable energy sources, including lignocellulosic biomass. In this context, this work aims to assess the biomass production for energy purposes in crops with short rotation, as well as its effect on soil properties. Deciduous tree species were used, mainly Siberian elm (Ulmus pumila L.), black locust (Robinia pseudoacacia L.) and a hybrid poplar clone (Populus × euroamericana (Dode) Guinier, clone ‘AF2′). Four field trials were implemented, under two different types of Mediterranean climate, where highly productive taxa were tested, in addition to the mixed planting of a nitrogen-fixing species with a non-fixing one. Short-rotation coppices (SRCs) of these taxa yield about 12–14 t ha−1 year−1 of high-quality dry woody biomass, when fertilizers and irrigation water are supplied; generate 205–237 GJ ha−1 year−1 net and earnings of about EUR 1.5 per EUR 1 invested; and sequester into the soil 0.36–0.83 t ha−1 year−1 of C and 57 kg ha−1 year−1 of N. Therefore, these species raised as SRCs could improve degraded soils if the crop is properly managed, resulting in favorable economic, energy and CO2 emission balances. The use of mixed plantations can bring economic and environmental gains, and the biomass transformation into high-quality chips or pellets gives it added value.

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Evaluación de Ulmus pumila L. y Populus spp. como cultivos energéticos en corta rotación

Cited by 2 publications

References 62 publications

Obtaining Fermentable Sugars from a Highly Productive Elm Clone Using Different Pretreatments

Obtaining Fermentable Sugars from a Highly Productive Elm Clone Using Different Pretreatments

Biomass Yield and Economic, Energy and Carbon Balances of Ulmus pumila L., Robinia pseudoacacia L. and Populus × euroamericana (Dode) Guinier Short-Rotation Coppices on Degraded Lands under Mediterranean Climate

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