Process evaluation data supporting studies on swing strategies to recover N-ethylbutylamine after wet lipid extraction from microalgae.

In this paper, we publish information that has not been published before, but is needed to evaluate processes for wet lipid extraction from microalgae and recover the solvent N-ethylbutylamine (EBA), for example as presented in [1], the article entitled "Process evaluation of swing strategies to recover N-ethylbutylamine after wet lipid extraction from microalgae" in which we evaluate and interpret temperature swing and CO-swing approaches. This includes selection of microalgae slurry concentration used in the extraction process, information on switching of EBA with CO, data on the amount of EBA in solid residue after extraction, recoverability from the solid residue, and on recoverability of the solvent from the aqueous raffinate by liquid-liquid extraction and distillation of the solvent and EBA after the liquid-liquid extraction. Also information on phase behavior of binary mixtures of EBA and water is presented.

Sub- and supercritical water oxidation of anaerobic fermentation sludge for carbon and nitrogen recovery in a regenerative life support system.

Sub- and supercritical water oxidation was applied to recover carbon as CO, while maintaining nitrogen as NH or NO, from sludge obtained from an anaerobic fermenter running on a model waste composed of plant residues and human fecal matter. The objective was to fully convert carbon in the organic waste to CO while maintaining nutrients (specifically N) in the liquid effluent. In regenerative life support systems, CO and nutrients could then be further used in plant production; thus creating a closed carbon and nutrient cycle.

Influence of strain-specific parameters on hydrothermal liquefaction of microalgae.

Algae are an interesting feedstock for producing biofuel via hydrothermal liquefaction (HTL), due to their high water content. In this study, algae slurries (5-7 wt% daf) from different species were liquefied at 250 and 375 °C in batch autoclaves during 5 min. The aim was to analyze the influence of strain-specific parameters (cell structure, biochemical composition and growth environment) on the HTL process.

Assessment of a dry and a wet route for the production of biofuels from microalgae: energy balance analysis.

In this study, the energy balance of two microalgae-to-biofuel concepts, one via a so called "dry route" (oil extraction from dried algae) and one via a "wet route" (oil extraction in the water phase), are assessed. Both routes are intended to convert the chemical energy contained in the microalgae into high-value biofuels with minimal fossil energy consumption. The analysis shows that the drying process in the dry route and the oil extraction process in the wet route consume a significant amount of energy.

highly selective amino acid salt solutions as absorption liquid for CO(2) capture in gas-liquid membrane contactors.

The strong anthropogenic increase in the emission of CO(2) and the related environmental impact force the developments towards sustainability and carbon capture and storage (CCS). In the present work, we combine the high product yields and selectivities of CO(2) absorption processes with the advantages of membrane technology in a membrane contactor for the separation of CO(2) from CH(4) using amino acid salt solutions as competitive absorption liquid to alkanol amine solutions. Amino acids, such as sarcosine, have the same functionality as alkanol amines (e.