[1] Bromide breakthrough curves from push-pull tests were obtained at two wells before, during, and after citrate injections to assess how citrate-induced colloid mobilization affected physical aquifer transport properties. Tailing and incomplete bromide recoveries (67–95%) could not be fit with a conservative advection/dispersion model, and the results of batch tests using aquifer solids impli...

The kinetics of calcination of a high calcium type of limestone was studied. Ukpilla limestone found in the central region of Nigeria was studied. The limestone composition shows that the limestone has 51.29% calcium oxide and 41.53% loss on ignition and magnesium oxide content of 2.23%. The following parameters were determined; diffusion coefficient of lime layer, and mass transfer coefficient...

A wide-ranging review is presented on the most focal aspects of gas-liquid-solid reactors to discuss fresh headways towards understanding slurry bubble column reactors' behavior. In more detail, in this critical review, published works' findings concerning effects solid particles characteristics (size, concentration and density) volumetric mass transfer coefficient, liquid-side gas-liquid inter...

Transient uptake curves for propane gas in a bed of HZSM-5 using volumetric frequency response setup (batch system) were obtained. Thereby, perturbation, such as change volume, was applied to the solid/gas system, and resulting pressure detected. Two cases mass transfer limitations (bed diffusion control micropore control) compared, it concluded that, presented case, is rate-determining process...

A numerical simulation of the thermal and fluid-dynamic behaviour of hermetic reciprocating compressors has been developed by solving the one-dimensional and transient governing equations of the flow (continuity, momentum and energy) in the whole compressor domain. The governing equations are discretized using an implicit control-volume formulation. A SIMPLE-like algorithm, extended to compress...