When initial PNP concentration in the feeding phase is c_0=1.8×10~(-4)mol/L,the transfer rate of PNP can reach 82.5% in 60 min and the permeability coefficient is P=3.58×10~(-3)m/s.
The hydrogen permeability coefficient and H 2/N 2 separation factor of the film are 3.07×10 -12 moL·cm/cm 2·s·pa 0.5 and 4 000 at 350 ℃ and 0.3 MPa, respectively.
By means of material selection and mix design,such clay-concrete can be made,elastic modulus of which is from 4 000 MPa to 2 800 MPa,strength from 2 MPa to 16 MPa,coefficient of permeability from 10-8 cm/s to 10-9 cm/s. It can be applied in hydraulic project to meet various demands.
The results show that 4A zeolite have a large cationic exchange capacity and the CEC value is 137.82 mmol/100 g,pore volume,6.25 cm~3/g; specific surface area,232.5 m~2/g; coefficient of permeability,8.7×10~(-4) m/s.
The hydraulic conductivity of the fresh waste varied between 1.26E-03 and 1.43E-03 cm/s when the density was between 0.75 and 0.95 t/m~3,while the hydraulic conductivity of decomposed waste at the density of 1.2 and 1.4 t/m~3 was 8.29E-04 and 1.35E-04 cm/s respectively.
(4) Using the model, the computed result of the Hydraulic conductivity of Unit landfill of Chengdu Chang-an Landfill site indicated the hydraulic conductivity of Unit landfill of Chengdu Chang-an Landfill site in 3.57× 10~(-5)m/s~4.88× 10~(-8)m/s scope.
In the experiment, the compacted clay liner systems in Columns A, (100% clay) Column C (10% zeolite +90% clay), achieved hydraulic conductivity values of the order 10-7 cm/s which is the maximum limit permitted by most countries.
2) There is a heavy attenuation property and there exist sensitive relationships of increase function between attenuation constant and frequency,porosity,osmotic coefficient;
The early or late order of recovery cycles were water content of soil, osmotic coefficient, total porosity, volumetric weight and hardness, the recovery cycles were 6.5, 6.6, 8, 12 and 21.5 years respectively, whereas the recovery cycles of osmotic coefficient, volumetric weight, water content of soil, total porosity and hardness within the depth of 40～80 cm soil layer were 3.3, 7.5, 10, 12.5 and 19.5 years respectively.
According to the field data the conclusion is to take osmotic coefficient K=10~(-5)cm/s as the criterion of dissolution of gypsum closed in Neogene mud-stone.
The representation of the permeability coefficient tensor for capillary models of porous media displaying isotropic and anisotropic flow properties is considered.
A solution of the inverse problem of determining the permeability coefficient using wave-pulse test data is constructed on the basis of a set of solutions of the direct problem.
This model requires the knowledge of some site conditions such as the area to be drained, the thickness of the aquifer and the soil coefficient of permeability.
The predictions of the proposed soil-water characteristics, unsaturated hydraulic conductivity, unsaturated shear strength, swelling deformation and compression were in good agreement with published experimental data.
The osmotic coefficient of solutions of rod-like polyelectrolytes is considered by comparing current theoretical treatments and simulations to recent experimental data.
The classical Poisson-Boltzmann solution of the cell model correctly predicts a strong decrease in the osmotic coefficient, but upon closer look systematically overestimates its value.
It is suggested that the anomalies at high Hb concentration in shrunken cells may arise from the ionic strength dependence of the Hb osmotic coefficient.
渗透系数
permeability coefficient
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