Microalgae productivity in tubular photobioreactors depends on algae species, location, tube diameter, biomass concentration, distance between tubes and for vertically stacked systems, the number of horizontal tubes per stack. A simulation model for horizontal and vertically stacked horizontal...

A zero emission process was established by treatment of a spent liquor resulting from frequent pickling of copper alloy rods in sulfuric acid. The spent liquor contains 35 g l−1 copper, 25 g l−1 zinc, 1.1 g l−1 chromium, 45 g l−1 sulfuric acid, and 135 g l−1 total sulfate. These...

The purpose of this study was to valorize oil palm empty fruit bunch (EFB) and palm fiber (PF) from palm oil mills to produce fuel ethanol. Chemical-free fractionation of EFB and PF using hot-compressed water (HCW) pretreatment at temperatures ranging from 150 to 200ºC at 30 bars and reaction...

The purpose of this study was to valorize oil palm empty fruit bunch (EFB) and palm fiber (PF) from palm oil mills to produce fuel ethanol. Chemical-free fractionation of EFB and PF using hot-compressed water (HCW) pretreatment at temperatures ranging from 150 to 200ºC at 30 bars and reaction...

Multiple entry selections of big bluestems and three native C4 grass species, including switchgrass, miscanthus, and Conservation Reserve Program (CRP) mixture grass, were evaluated for their chemical composition and ethanol yields via diluted sulfuric acid pretreatment following simultaneous...

Adoption of lactic acid bacteria (LAB) into ethanol fermentation from food waste can replace the sterilization process. However, LAB inoculation will convert part of the substrate into lactic acid (LA), not ethanol. This study adopted lactate oxidase to convert the produced LA to pyruvate, and...

The paper presents preliminary results of the analysis concerning a CO2 removal process, applied to metallurgical fuel gases: blast-furnace gas and Corex gas. The CO2 removal is realised by the physical absorption process with the Selexol solvent as the absorbing liquid. The analysis is focused...

This study is devoted to technical evaluation of a carbon dioxide removal in an existing Integrated Gasification Combined Cycle (IGCC) plant. This IGCC case is based on an oxygen blown entrained flow gasifier operating at 27bar, the removal of acid gas (H2S) is performed with MDEA unit, the...

The integration of the COREX process with the blast-furnace process, the installation of CO2 removal and gas-and-steam CHP plant displays many energy and ecological advantages. The application of COREX gas after the removal of CO2 as hot reducing gas leads first of all to a saving of coke....

The paper presents the possibility of integration of the Corex process, blast furnace, CO2 removal installation and metallurgical combined heat and power (CHP) plant. Such an integration has significant advantages from the technical and environmental points of view. As the Corex export gas...