Showing papers by "Sushil Adhikari published in 2011"
TL;DR: A large reduction in high molecular weight, oxygenated compounds was noticed when the carrier gas was changed from helium to hydrogen during pyrolysis, and there was no significant increase in hydrocarbon yield as the catalyst loading was increased from two to five times of biomass in the catalyst-bed method.
169 citations
TL;DR: A fast pyrolysis process has emerged as one of the techniques to produce transportation fuels using various biomass types that are regionally important as discussed by the authors, and it is well understood that high heating rate...
Abstract: A fast pyrolysis process has emerged as one of the techniques to produce transportation fuels using various biomass types that are regionally important. It is well understood that high heating rate...
70 citations
TL;DR: In this paper, the effects of particle size and moisture content on bulk density, particle density, tap density, compressibility and angle of repose, cohesion, angle of internal friction and flowability were quantified.
42 citations
TL;DR: In this article, the effects of surfactant on biochemical and hydrothermal conversion of hemicellulose into biofuels and value-added co-products were explored.
37 citations
TL;DR: The column temperature was found critical in resolving acetic acid and levulinic acid and the resolution for two acids increased dramatically as the column temperature dropped and variation in flow rate and sulfuric acid concentration improved not as much as thecolumn temperature did.
33 citations
Journal Article•
TL;DR: In this paper, a study was conducted to quantify tar formation in a stratified downdraft gasifier using wood pellets, and the effect of biomass flow rate on tar concentration was also analyzed.
Abstract: A study was conducted to quantify tar formation in a stratified downdraft gasifier using wood pellets. The effect of biomass flow rate on tar concentration was also analyzed, and more than thirty compounds in tar were quantified. Among the different compounds in tar, tertiary condensed products such as toluene, o/p-xylene, naphthalene, phenol, styrene, and indene were observed in significant amounts. Tar concentration in the syngas was found to be in the range of 340 to 680 mg/Nm3. These concentrations were found to be much higher when compared to a similar gasifier using woodchips.
13 citations
TL;DR: In this article, the synthesis gas obtained from different feedstocks and different operating conditions (biomass flow rate and moisture content) was analyzed using an on-site gas analyzer.
Abstract: In this study, gasification of different biomass feedstocks, including pine wood chips, sawdust, peanut hulls, and poultry litter (the latter three in pelletized form), was conducted in a 25 kWe commercially available, mobile downdraft gasifier. Ultimate and proximate analyses were carried out to characterize the biomass feedstocks used for gasification. The synthesis gas obtained from different feedstocks and different operating conditions (biomass flow rate and moisture content) was analyzed using an on-site gas analyzer. Gasification of peanut hull pellets showed the highest heating value (6.1 MJ per normal cubic meter, Nm-3) of synthesis gas, whereas poultry litter gasification gave the lowest heating value (4.8 MJ Nm-3).
3 citations