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Valorization of Vine Prunings by Slow Pyrolysis in a Fixed-Bed Reactor
| Content Provider | MDPI |
|---|---|
| Author | Oana, Cristina Pârvulescu Cristian, Eugen Răducanu Liliana, Bădulescu Andrei, Moț Mihaela, Emanuela Crăciun Calcan, Suzana Ioana Ion, Violeta Alexandra Dobre, Tănase Egri, Diana Popa, Vlad |
| Copyright Year | 2021 |
| Description | The paper aimed at studying the slow pyrolysis of vine pruning waste in a fixed bed reactor and characterizing the pyrolysis products. Pyrolysis experiments were conducted for 60 min, using $CO_{2}$ as a carrier gas and oxidizing agent. The distribution of biochar and bio-oil was dependent on variations in heat flux (4244–5777 $W/m^{2}$), $CO_{2}$ superficial velocity (0.004–0.008 m/s), and mean size of vegetal material (0.007–0.011 m). Relationships among these factors and process performances in terms of yields of biochar (0.286–0.328) and bio-oil (0.260–0.350), expressed as ratio between the final mass of pyrolysis product and initial mass of vegetal material, and final value of fixed bed temperature (401.1–486.5 °C) were established using a $2^{3}$ factorial design. Proximate and ultimate analyses, FT-IR and SEM analyses, measurements of bulk density (0.112 ± 0.001 $g/cm^{3}$), electrical conductivity (0.55 ± 0.03 dS/m), pH (10.35 ± 0.06), and water holding capacity (58.99 ± 14.51%) were performed for biochar. Water content (33.2 ± 1.27%), density (1.027 ± 0.014 $g/cm^{3}$), pH (3.34 ± 0.02), refractive index (1.3553 ± 0.0027), and iodine value (87.98 ± 4.38 g $I_{2}$/100 g bio-oil) were measured for bio-oil. Moreover, chemical composition of bio-oil was evaluated using GC-MS analysis, with 27 organic compounds being identified. |
| Starting Page | 37 |
| e-ISSN | 22279717 |
| DOI | 10.3390/pr10010037 |
| Journal | Processes |
| Issue Number | 1 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-12-24 |
| Access Restriction | Open |
| Subject Keyword | Processes Paper and Wood Bio-oil Biochar Pyrolysis Vine Prunings |
| Content Type | Text |
| Resource Type | Article |
