Search results for "Biomas"
showing 10 items of 980 documents
Alkaline pretreatment to enhance one-stage CH4 and two-stage H2/CH4 production from sunflower stalks: Mass, energy and economical balances
2015
Abstract Biological production of second generation biofuels such as biohydrogen (H2) or methane (CH4) represents a promising alternative to fossils fuels. Alkaline pretreatments of lignocellulosic biomass are known to enhance the accessibility and the bioconversion of hollocelluloses during anaerobic digestion and dark fermentation processes. In the present study, four different configurations were investigated: one-stage CH4 continuous and two-stage H2 batch/CH4 continuous process with and without alkaline pretreatment of sunflower stalks (55 °C, 24 h, 4 g NaOH/100 g TS). The results showed that two stage H2/CH4 (150 ± 3.5 mL CH4 g−1 VS) did not improve methane yields compared to one stag…
Biochemical methane potential (BMP) of solid organic substrates: evaluation of anaerobic biodegradability using data from an international interlabor…
2011
Background: This paper describes results obtained for different participating research groups in an interlaboratory study related to biochemical methane potential (BMP). In this research work, all experimental conditions influencing the test such as inoculum, substrate characteristics and experimental conditions were investigated. The study was performed using four substrates: three positive control substrates (starch, cellulose and gelatine), and one raw biomass material (mung bean) at two different inoculum to substrate ratios (ISR). Results: The average methane yields for starch, cellulose, gelatine and mung bean at ISR of 2 and 1 were 350 ± 33, 350 ± 29, 380 ± 42, 370 ± 36 and 370 ± 35 …
The effects of biomass co-gasification and co-firing on the development of combustion dynamics
2018
Abstract Effects of wheat straw co-firing with gas (propane flame) and co-gasification/co-combustion with wood pellets on the development of thermo-chemical conversion of biomass pellets and on heat energy production were experimentally studied and analyzed with the aim to improve the gasification/combustion characteristics and the applicability of wheat straw as an alternative energy source for cleaner heat energy production. The results suggest that the wheat straw co-firing with propane provides an enhanced thermal decomposition of pellets with more complete combustion of volatiles increasing thus the heat output at thermo-chemical conversion of wheat straw and the produced heat energy p…
Green biotechnology for valorisation of residual biomasses in nutraceutic sector: Characterization and extraction of bioactive compounds from grape p…
2019
The grape pomace (GP) is an important by-product of winemaking, accounting for about 13-25% of the grapes processed. The aim of this work was to investigate the nutritional and antioxidant composition of GP obtained from Nero d’Avola (NA) grape, one of the most important indigenous varieties in Italy, in order to verify application in nutraceutics. Seeds and skin of the GP were studied for their nutritional and antioxidants composition, fatty acid and polyphenols profile, bioactives properties in vitro, by gravimetric, spectrophotometric and chromatographic techniques. The results showed that NAGP seeds are rich in the beneficial polyunsaturated fatty acids and that the polyphenols extracte…
Diversité des communautés microbiennes telluriques à l'échelle du territoire national
2009
Communication orale - résumé Session 5 : sols, biodiversité, écologie fontionnelleCommunication orale - résumé Session 5 : sols, biodiversité, écologie fontionnelle; absent
Charakterystyka Palczatki Gerarda (Andropogon gerardi) jako rośliny energetycznej
2017
Celem przeprowadzonej analizy jest charakterystyka palczatki Gerarda jako rośliny energetycznej. Jest to trawa preriowa fotosyntezy typu C4, która nie jest popularnym gatunkiem w Polsce. Artykuł ma charakter przeglądowy i niniejsze opracowanie dotyczące Andropogon gerardi ma na celu zaprezentowanie możliwości jej przydatności w polskich warunkach środowiskowych jako biomasy do produkcji bioenergii na podstawie doniesień z literatury. Powolne tempo wzrostu po okresie zimowym oraz łatwość zachwaszczania plantacji powoduje, że Andropogon gerardi stanowi mało opłacalną roślinę energetyczną w warunkach polskich. Dodatkowo, zostały porównane koszty założenia plantacji w stosunku do wierzby krzewi…
Biomass gasification to heat, electricity and biofuels : HighBio project publication
2011
Biomassan kaasutus sähköksi, lämmöksi ja biopolttoaineiksi : HighBio-projektijulkaisu
2011
Biomass to energy and chemicals : HighBio2 project publication
2013
Puuperäisiä biomassoja ja mikroturbiinitekniikkaa hyödyntävän pienen kokoluokan CHP-laitoksen mallintaminen osaksi aluelämpöverkkomallia
2015
Tässä tutkielmassa mallinnettiin MATLAB:lla pienen kokoluokan (< 1MW) yhdistetty lämmön- ja sähköntuotantoyksikkö (CHP), joka hyödyntää puuperäisiä biomassoja polttoaineena ja mikroturbiiniteknologiaa sähkön tuottamiseen. Mallinnustyö jakaantui tarkastelemaan puuhakkeen ja pellettien palamisessa muodostuvia savukaasuja, Turbec T100- mikroturbiinijärjestelmän sähköntuotantoa, vastavirta lämmönvaihtimien toimintaa sekä koko yksikön liittämistä osaksi VTT:n rakentamaa aluelämpöverkkomallia. In this thesis, a MATLAB based model was constructed of a small scale (< 1MW)combined heat- and power production (CHP) unit which utilizes woody biomasses as fuel and microturbine technology in the producti…