Published in Journal of the Korean Physical Society
Dimethyl ether (DME) is disintegrated by a microwave steam-plasma raising the gas temperature in a reaction chamber of 100 liters in a swirl-type gasifier. With additional heating of DME by partial oxidation, the gasifier temperature reaches 1250 °C. The initial breakdown species of DME molecules are hydrogen, carbon monoxide and methane, which eve...
Published in SN Applied Sciences
Residues with a large amount of organic content represent a potential for energy recovery. Specifically human feces, given the amount of global production and the environmental appeal, appear as a potential candidate for a new feedstock. The objective of this work is to perform a thermodynamic assessment of human feces gasification considering for ...
Published in Water, Air, & Soil Pollution
This work comprises results of the laboratory tests on formation and potential release of contaminants from underground gasification of lignites. Four large scale and multi-day trials were carried out using ex-situ gasification facilities. Two different kinds of lignite were tested, i.e. Velenje lignite (Slovenia) and Oltenia lignite (Romania). Gas...
Published in Chemical Papers
Gasification of biomass can play a major role in the future’s energy system as a source of renewable electricity, process heat, fuels, and chemicals. The composition of wood poses some constraints for the operation: below a certain limit of gasification agent, parts of the carbon stay solid and must be considered as an efficiency loss. Thermodynami...
Published in Chemical Papers
Municipal solid waste (MSW) disposed in landfills is a serious environmental hazard and waste of potential source of reusable resources and energy as only a small portion of MSW is incinerated. Pyrolysis and gasification of MSW is an alternative to commercial combustion for the recovery of valuable chemicals and production of heat and electricity. ...
Pyrolysis behavior of wood at gasification temperature (800 °C) was investigated focusing on the behaviors of the wood constituent polymers [cellulose, hemicellulose (glucomannan and xylan) and lignin (milled wood lignin)]. Tar compositions (iso-propanol-soluble and water-soluble tar fractions), which were characterized with GPC, GC–MS, GC-FID (oxi...
Solid/liquid- and vapor-phase interactions between cellulose- and lignin (Japanese cedar milled wood lignin)-derived pyrolysis products were studied under the conditions of N2/600 °C/40–80 s. A dual-space closed ampoule reactor was used to eliminate the solid/liquid-phase interactions, and careful comparison of the resulting data with those of the ...
Published in Biomass Conversion and Biorefinery
Biomass combustion is an important pathway of energy generation from renewable resources. Even though biomass combustion is an established conversion process, there is a high potential for further optimization of the used technologies. In particular, the advantage of numerical methods for the improvement of biomass combustion systems is not used to...
Published in Frontiers of Environmental Science & Engineering
Polymer thermal recycling for hydrogen production is a promising process to recover such precious element from plastic waste. In the present work a simple but efficacious high energy milling pretreatment is proposed to boost H2 generation during polyethylene gasification. The polymer is comilled with calcium and nickel hydroxides and then it is sub...
