Vine shoots waste – new resources for bioethanol production

Șenilă, Lăcrimioara; NEAG, EMILIA; Török, I.; Cadar, Oana; Kovács, Enikő; Ţenu, Ioan; Roman, Cecilia

doi:10.25083/rbl/25.1/1253.1259

Cited by 7 publications

(10 citation statements)

References 22 publications

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“…The cellulose content of the autohydrolysed materials also increased with increasing autohydrolysis temperature from 38.3-47.4% at 150 • C in our previous study [28], to 49.3-57.3% at 165 • C and then slightly decreased to 45.3-53.3% at 180 • C in the present study. Thus, the optimal pretreatment temperature for obtaining high cellulose content in pretreated vine-shoot wastes was found to be 165 C).…”

Section: Autohydrolysis Pretreatment Of Vine-shoot Wastessupporting

confidence: 77%

“…The chemical composition of the studied eight vine-shoot wastes resulted from Vitis vinifera cultivars was previously reported [28]. The cellulose, hemicellulose and lignin contents were in the range of 28.8-40.4%, 17.3-28.0%, and 25.9-32.6%, respectively.…”

Section: Chemical Composition Of Vine-shoot Wastementioning

confidence: 73%

“…By pretreatment, the vine-shoot matrix is destroyed and the enzymes' access to the carbohydrates is facilitated. Based on our previous studies, the autohydrolysis was performed at 150 • C for 10 min, the reported solid yield ranging between 60.5-75.0% [28,29]. In this study, the dependence of solid yield on the pretreatment operating temperature and the vines-shoot waste variety was observed.…”

Section: Autohydrolysis Pretreatment Of Vine-shoot Wastesmentioning

confidence: 75%

“…The autohydrolysis of vine-shoot waste varieties performed at 150 • C revealed that Vitis vinifera cultivars are potential source for producing valuable compounds, among them also bioethanol [28]. In this regard, this study aims to continue the investigation and to compare bioethanol production by autohydrolysis pretreatment, acid chlorite delignification, followed by simultaneous saccharification and fermentation from vineyard waste resulted from several varieties.…”

Section: Introductionmentioning

confidence: 99%

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Bioethanol Production from Vineyard Waste by Autohydrolysis Pretreatment and Chlorite Delignification via Simultaneous Saccharification and Fermentation

et al. 2020

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In this paper, the production of a second-generation bioethanol from lignocellulosic vineyard cutting wastes was investigated in order to define the optimal operating conditions of the autohydrolysis pretreatment, chlorite delignification and simultaneous saccharification and fermentation (SSF). The autohydrolysis of vine-shoot wastes resulted in liquors containing mainly a mixture of monosaccharides, degradation products and spent solids (rich in cellulose and lignin), with potential utility in obtaining valuable chemicals and bioethanol. The autohydrolysis of the vine-shoot wastes was carried out at 165 and 180 °C for 10 min residence time, and the resulted solid and liquid phases composition were analysed. The resulted liquid fraction contained hemicellulosic sugars as a mixture of alpha (α) and beta (β) sugar anomers, and secondary by-products. The solid fraction was delignified using the sodium chlorite method for the separation of lignin and easier access of enzymes to the cellulosic sugars, and then, converted to ethanol by the SSF process. The maximum bioethanol production (6%) was obtained by autohydrolysis (165 °C), chlorite delignification and SSF process at 37 °C, 10% solid loading, 72 h. The principal component analysis was used to identify the main parameters that influence the chemical compositions of vine-shoot waste for different varieties.

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Section: Autohydrolysis Pretreatment Of Vine-shoot Wastessupporting

confidence: 77%

Section: Chemical Composition Of Vine-shoot Wastementioning

confidence: 73%

Section: Autohydrolysis Pretreatment Of Vine-shoot Wastesmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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Bioethanol Production from Vineyard Waste by Autohydrolysis Pretreatment and Chlorite Delignification via Simultaneous Saccharification and Fermentation

et al. 2020

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“…As reported in Table S2, the highest cellulose contents, ranging from 39.27 to 44.86 % of dry matter, were detected in barley, wheat and soy straw, and vine shoots. These values are in agreement with those obtained by other authors [58][59][60]. These substrates have also a high dry matter content (from 79.19 to 91.51%) and are available in large quantities (around 250,000 Mg dry weight).…”

Section: Chemical Analyses Of Biomassessupporting

confidence: 92%

Agro-Food Residues and Bioethanol Potential: A Study for a Specific Area

Basaglia

D’Ambra²,

Piubello³

et al. 2021

Processes

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Bioethanol obtained from agro-food wastes could contribute to decrease the dependency on fossil resources, reduce the impact of fossil fuels on the environment, and mitigate the food versus fuel debate. This study is aimed to investigate the availability of residual inexpensive agro-food biomasses that could feed a second-generation bioethanol plant located in a specific area of North Eastern Italy. After the identification of all crops in the area, more than 40 agro-food residues were analyzed for their availability and compositions in terms of water, polysaccharides, and sugars potentially convertible into bioethanol. 574,166 Mg of residual wet lignocellulosic biomass corresponding to 297,325 Mg of dry material were found available for bioethanol conversion. The most promising substrates were wheat straw and vine shoots. Based on the chemical composition of residues, the potential attainable ethanol was determined. Theoretical potential ethanol production was estimated at nearly 72,000 Mg per year. This quantity extensively exceeds the minimum yearly capacity of a sustainable bioethanol plant previously identified as around 50,000 Mg of ethanol. Taken together, these results demonstrate that, in the analyzed area, agro-food residues are available in an amount that could sustain bioethanol production in a specific and restricted district. Techno-economical evaluations are in progress to assess the actual feasibility of installing a second generation bioethanol production plant in the area of interest.

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Sustainable Biomass Pellets Production Using Vineyard Wastes

Șenilă

Ţenu²,

Cârlescu³

et al. 2020

Agriculture

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Vineyards waste has a great importance as biomass, a renewable source of energy. In this paper eight vine shoot varieties were used for the production of pellets by densification of feedstock materials with four ranges of moisture contents (6–8%, 8–10%, 10–12% and 12–15%). A moisture content of 10% gave durability higher than 97.5% and a calorific value greater than 17 MJ kg−1 and the small durability was obtained for 6–8% moisture. The study shows the significant influence of water during densification. The physicochemical and energetic properties of pellets were evaluated in accordance with ISO 17225-6 (2014). The obtained pellets were also structurally characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). SEM analysis showed the formation of carbon microsphere after pelletization, due to the increase of bulk density and durability of pellets. Also, XRD analysis revealed the crystallinity of cellulose, while TGA analysis showed a total decomposition of pellets. The obtained pellets were burned in a domestic boiler and the flue gases were measured. The preliminary results showed that the vineyard residues had higher emissions, but below the admitted limits, with the exception of carbon monoxide content. The obtained results suggested that the biomass wastes can be used for the production of pellets, aiming to enhance the research for the manufacturing of these sustainable biofuels with some remarks regarding risk of corrosion and slag formation during prolonged use.

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Vine shoots waste – new resources for bioethanol production

Cited by 7 publications

References 22 publications

Bioethanol Production from Vineyard Waste by Autohydrolysis Pretreatment and Chlorite Delignification via Simultaneous Saccharification and Fermentation

Bioethanol Production from Vineyard Waste by Autohydrolysis Pretreatment and Chlorite Delignification via Simultaneous Saccharification and Fermentation

Agro-Food Residues and Bioethanol Potential: A Study for a Specific Area

Sustainable Biomass Pellets Production Using Vineyard Wastes

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