Summary This paper presents a novel technique to determine multicomponent diffusion coefficients for carbon dioxide (CO2) injection in North Sea chalk field (NSCF) Norway at reservoir conditions. The constant-volume-diffusion (CVD) method is used, consisting of an oil-saturated-chalk core contact with overlying free space, which filled the CO2. experimental data are matched equation-of-state (EOS) -based compositional model. Transport by controls dynamics constant-volume system and, together...

With the aim of informing selection biomass pretreatment options and to assist in interpreting experimental results from different biomass/solvent combinations, this study addresses impact crystallinity size on kinetics semicrystalline cellulose fiber swelling dissolution. To end, a newly developed phenomenological model is utilized that accounts for role decrystallization disentanglement as two rate-determinant steps dissolution process. Although fibers with lower swell more faster, degree...

Hydrogen sulfide (H2S) sequestration in geological formations can be one of the promising techniques for reducing greenhouse gas emissions. Accurate predictions phase behavior and H2S solubility aqueous solution phases are vital to provide better accuracy designing, well planning, process injection optimizations. In this study, a vast number data sets pure water solutions NaCl have been collected. regard, three intelligent paradigms, including Categorical Boosting (CatBoost), Extra Trees,...

In this article, an atmospheric dielectric barrier discharge (DBD) plasma reactor was used as a novel tool for the upgrading of bio-oil using anisole model compound. The influences different carrier gases (Ar, H2, and He) on performance were carefully studied. results revealed that conversion in He is higher than Ar or H2 plasma. This may be attributed to more stable homogeneous It believed all experiments phenoxy radical formed primary product dissociation via electron-attack reactions....

Objectives: Casdatifan (AB521), an orally bioavailable small-molecule inhibitor of HIF-2α, potently inhibits transcription HIF-2α-dependent genes in cell lines and preclinical species. The objective this analysis was to develop a population plasma urine PK model describing the relationship between dose casdatifan PK, conduct simulations compare exposure subjects with normal renal function those moderate impairment, support inclusion renally impaired patients future clinical trials.METHODS:...

A dielectric barrier discharge (DBD) plasma reactor for upgrading of anisole, a model compound representative lignin-derived bio-oils, was investigated with helium as carrier gas. The effects gas flow rate, liquid anisole feed and length on the performance were investigated. As result decomposition most prevalent free radical species that formed is inferred to have been phenoxy, resulting from breaking Cmethyl–O bond. residence times reactive molecules are be key parameters affecting...

The solvent processing of polymers is significantly constrained by polymer chain crystallinity. A phenomenological model developed here that captures the phenomena governing dissolution semicrystalline polymers, for example, penetration, transformation from crystalline to amorphous domains, specimen swelling, and untangling. validated case cellulose fiber swelling in an ionic liquid. parametric sensitivity analysis performed assess impact decrystallization rate constant, disentanglement...

In this article, the transesterification of waste cooking oil (WCO) to biodiesel fuel (BDF) has been studied using KOH loaded on millimetric γ-Al2O3 particles in a novel type two-impinging-jets reactor (TIJR). The effects various parameters such as loading (wt %), catalyst loading, and methanol-to-oil molar ratio BDF yield were studied. with 25 wt % at appropriate reaction conditions (i.e., = 4 15:1) 65 °C used TIJR. influences operating design jet Reynolds number value, feed flow rate,...

Abstract As energy demand continues to rise and conventional fuel sources dwindle, there is growing emphasis on previously overlooked reservoirs, such as tight reservoirs. Shale coal formations have emerged highly attractive options due their substantial contributions global gas reserves. Enhanced shale recovery (ESGR) enhanced coalbed methane (ECBM) based injection are advanced techniques used increase the extraction of from formations. One key challenges associated with these methods...

Summary The main focus of this paper is to present experimental and simulation results that describe carbon dioxide (CO2) injection in a chalk sample with fracture/matrix interaction at reservoir conditions. On the basis experiments, models were built mimic transport phenomena, including diffusion, which was found be particularly important. first experiment consisted vertically oriented Sigerslev outcrop core, where single “fracture” represented by centralized hole along core. Both matrix...

Summary High-viscosity liquid two-phase upward vertical flow in wells and risers presents a new challenge for predicting pressure gradient holdup due to the poor understanding prediction of pattern. The objective this study is investigate effect viscosity on pattern pipe flow. Further develop new/improve existing mechanistic flow-pattern transition models high-viscosity two-phase-flow pipes. data were collected from open literature, against which evaluated identify discrepancies potential...