Valorization of Cistus ladanifer and Erica arborea shrubs for fuel: Wood and bark thermal characterization

Carrión-Prieto, Paula; Martín-Ramos, Pablo; Hernández-Navarro, Salvador; Sastre, Luis; Marcos-Robles, José Luís; Martín‐Gil, Jesús

doi:10.4067/s0718-221x2017005000401

Cited by 10 publications

(9 citation statements)

References 12 publications

(6 reference statements)

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“…Among the shrub species, it was verified that these were the ones that presented lower values and, within this group, the outstanding species is the Erica arborea, with contents very close to 25%. Compared with other similar works, namely Carriou-Prieto [64], Tsounamis [65] and Leroy et al [66], it was found that the content obtained is overestimated. However, it is judged that the significant difference of contents is due to the difference in extraction method.…”

Section: Extractivescontrasting

confidence: 66%

Thermal Properties of Residual Agroforestry Biomass of Northern Portugal

et al. 2019

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Biomass from forestry and agricultural sector provides an important contribution to encounter the government’s targets for increasing bioenergy production and utilization. Characterization of agricultural and forest wastes are critical for exploiting and utilizing them for energy purpose. In the present work agricultural and forest wastes and shrubs were sampled in two sites in north Portugal (Ave and Sabor basin) and subjected to Higher Heating Value (HHV) and chemical composition quantification. The HHV was evaluated according to the methodology described in Standard DD CEN/TS14918:2005. For the lignin content, the procedure was made by the Klason method and the extractives content was determined with the Soxhlet method. For agricultural and forest wastes the HHV values are identical with a range of 17 to 21 MJ·kg−1. However, shrubs biomass presentx slightly higher and statistically different values from agricultural and forest wastes, varying between 19 and 21 MJ·kg−1. Forest wastes contain higher levels of holocellulose compared to agricultural wastes and, with respect to extractive contents, this trend is the reverse. There is a general tendency for the woody components present thermo-chemical properties more suited for energy purposes, than the residues formed by the branches and leaves.

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Section: Extractivescontrasting

confidence: 66%

Thermal Properties of Residual Agroforestry Biomass of Northern Portugal

et al. 2019

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“…The calculated higher heating values (HHV) for green stems, brown stems and twigs were 19.67, 20.4 and 20.63 kJ·g −1 , respectively, with a mean value of 20.2 kJ·g −1 . For comparison purposes, the HHV values for other Mediterranean shrubs, i.e., C. ladanifer and E. arborea , ranged from 19.2 to 20.5 kJ·g −1 and from 19.7 to 21.3 kJ·g −1 , respectively [ 14 ]. Regarding the applicability of the above shrubs as fuels, the European standard for wood pellets (EN 14961-2) establishes that the HHV should be ≥18.82 kJ·g −1 [ 15 ], so E. horridum aerial samples would be compliant.…”

Section: Resultsmentioning

confidence: 99%

“…Main exothermic effects in the DSC curves of E. horridum fractions associated with holocellulose and lignin combustion. Those of C. ladanifer and E. arborea are included for comparison purposes[14]. T peak stands for exotherm peak temperature.…”

mentioning

confidence: 99%

On the Physicochemical Characteristics and Applications of an “Undesirable” Pyrenean Thorny Cushion Dwarf: Echinospartum horridum (Vahl) Roth

Martín-Ramos

Martín‐Gil

Gómez

et al. 2020

Plants

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Small evergreen shrubs of the family Fabaceae represent a large proportion of current Mediterranean mountain vegetation. Their low pastoral value and tendency for encroachment makes these plants undesirable. In this paper, the thermal and chemical characteristics of Echinospartum horridum, a thorny cushion-shaped dwarf shrub native to the French Central Massif and the Pyrenees (particularly dominant in the shrublands of the Pyrenees), have been analyzed with a view to its valorization. Although the higher and lower heating values of the biomass from E. horridum met the ISO 17225-2:2014 requirements for its use in pellets, the ash content was slightly above the upper limit, so it would not comply with the normative for its acceptable use as a fuel. Nevertheless, the presence of high added-value flavonoids and lignans in its extracts, which are receiving increasing recent interest as efficient anti-tumor drugs and antivirals, may open the door to the valorization of this shrub for pharmacological applications.

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“…The chosen area (> 1,2 ha) is a mixed shrubland in which the dominant shrub species are Cistus ladanifer L. and Erica arborea L. (Carrión-Prieto et al 2017a). Details on the sampling procedure, stem diameters, chemical composition and vegetal components can be found in Carrión-Prieto et al (2017b).…”

Section: Methodsmentioning

confidence: 99%

Cristalinidad de microfibras de celulosa obtenidas de Cistus ladanifer y Erica arborea

Carrión-Prieto

Martín-Ramos

Hernández-Navarro

et al. 2019

Maderas, Cienc. tecnol.

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The effectiveness of the use of cellulose fibers as particulates/composite reinforcers involves the assessment of the crystallinity of such fibers. The aim of the present work is to provide information on the degree of crystallinity of the cellulose microfibers obtained from the stems of Cistus ladanifer and Erica arborea shrubs through two different methods, namely an alkaline treatment and a microwave-assisted deep eutectic solvent (DES) method. The crystallinity indexes (CrI) obtained from X-ray powder diffraction patterns indicated that higher CrI were attained for cellulose obtained from the DES treatment. Complementary information on the degree of crystallinity was also retrieved from attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) vibrational spectra, scanning electron microscopy (SEM) micrographs, and accessibility data for the DES-treated celluloses from the two species. The crystallinity results for the fibers derived from these two Mediterranean shrubs were within the range of the results for those derived from wood pulp, opening the door to their valorization for cellulose-derived packing applications or for their use as reinforcers in composite materials in combination with other biopolymers.

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Valorization of Cistus ladanifer and Erica arborea shrubs for fuel: Wood and bark thermal characterization

Cited by 10 publications

References 12 publications

Thermal Properties of Residual Agroforestry Biomass of Northern Portugal

Thermal Properties of Residual Agroforestry Biomass of Northern Portugal

On the Physicochemical Characteristics and Applications of an “Undesirable” Pyrenean Thorny Cushion Dwarf: Echinospartum horridum (Vahl) Roth

Cristalinidad de microfibras de celulosa obtenidas de Cistus ladanifer y Erica arborea

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