the aim of this research was to optimize bioremediation of seawater samples spiked with 1000 mg/l crude oil for removal of n-alkanes (c12h26 to c34h70). bioaugmentation experiments were performed at laboratory scale: each bioreactor contained 250 ml dispersed crude-oil-contaminated seawater, indigenous acclimatized microorganism and nitrogen and phosphorus at concentrations based on central com...

Les dŽcouvertes de pŽtrole ou de gaz dans des conditions sŽvres de tempŽrature (plus de 150¡C) ou de pression (plus de 50 MPa) se comptent dans plusieurs bassins ˆ travers le monde. En mer du Nord, on prŽvoit de mettre en production des gisements dont les conditions de fond vont jusqu'ˆ 110 MPa et 190¡C. Ces caractŽristiques constituent un dŽfi pour la prŽdiction des propriŽtŽs des fluides de ...

Abstract The technical importance of paraffins as phase change materials (PCM) in heat storage systems increases. Knowledge on the thermal conductivity is necessary for design and optimization systems. However, most solely liquid state has been sufficiently investigated. For solid state, precise data are only known a few paraffins, while generalized values available remainder, some which contra...

Des échantillons valables sont essentiels pour bien caractériser les fluides de gisements. Si les échantillons ne sont pas représentatifs, toutes les mesures ultérieures seront entachées d’erreurs. Cet article discute les principaux défis en matière d’échantillonnage, en particulier les réservoirs de gaz à condensats, les gradients compositionnels, la teneur en eau des fluides hydrocarbonés, le...

In this Chem issue, Han et al. devised a system relying on tandem heterogeneous and homogeneous catalysis by ruthenium species for the CO2 hydrogenation to hydrocarbons with remarkable efficiency. particular, 5-atom (or longer) chain were obtained remarkably high selectivity (71.1%). For many years, distinction between has been clear, two separated fields have mostly evolved along parallel path...