Study on the Longitudinal Permeability of Oil Palm Wood

Choo, Adrian Cheng Yong; Paridah, Tahir; Karimi, A N; Bakar, Balkis Fatomer A.; Abdan, Khalina; Ibrahim, Azmi; Balkis, Fatomer A. B.

doi:10.1021/ie4009259

Cited by 17 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Such transports are generally considered as being governed by laws similar to those in a porous medium with neutral structure. However, the permeability, although in principle an intrinsic parameter, was found to vary with the sample length [10][11][12][13][14], which suggests that some effect might affect the basic liquid transport in wood. Moreover, it was shown that subtle hydraulic mechanisms between adjacent vessels can foster water refilling in embolized xylems vessels [15,16].…”

Section: Introductionmentioning

confidence: 99%

Wetting enhanced by water adsorption in hygroscopic plantlike materials

Zhou

Caré

King

et al. 2019

Phys. Rev. Research

View full text Add to dashboard Cite

Water inside hygroscopic porous media such as plantlike systems can be found either freely penetrating in capillaries or absorbed into the solid phase (bound water). Here we demonstrate that the wetting properties (contact angle) of liquid along cell walls significantly depend on the amount of bound water absorbed: a change from poor to good wetting is observed when cell walls are saturated with bound water, which allows liquid displacement. We further show that this process is operative in hydrogels, suggesting that this might be a general property of porous hygroscopic systems. As a consequence, imbibition dynamics is controlled by water adsorption and diffusion in the walls, and even if the dynamics of capillary imbibition is strongly damped (by several orders of magnitude), water can freely climb over significant heights as long as sufficient water has been adsorbed into cell walls or in other hygroscopic walls. Under these conditions, the imbibition process in such systems is not described by the standard model but is analogous to the propagation of a front of solidification in a liquid. This process might contribute to the regulation of water absorption in unsaturated wood, allowing it to store available bound water in progressively higher depths, instead of leaving free water rapidly flow through it. Such a mechanism may be explored to design porous materials with tunable liquid adsorption timings for pharmaceutical or chemical engineering applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Wetting enhanced by water adsorption in hygroscopic plantlike materials

Zhou

Caré

King

et al. 2019

Phys. Rev. Research

View full text Add to dashboard Cite

show abstract

“…Initially, the core samples were extracted with an alcohol–benzene mixture, and cleaned with massive reservoir brine until the pH value was 7, then dried at 60°C for 48 h. Afterwards, the cleaned reservoir brine was injected at a constant rate of 1 cm 3 /min by a positive displacement pump (ISCO 260D syringe pump) until the pressure drop became stable. The absolute permeability of the core ( k 0 ) was calculated using Darcy's law (Eq. )

k = μ Q L / A Δ P

where k is the permeability of the core, µ is the viscosity of the fluid, A is the cross‐sectional area of the core, Q is the flow rate of the working fluid, Δ P is the pressure drop and L is the length of the core.…”

Section: Methodsmentioning

confidence: 99%

“…Initially, the core samples were extracted with an alcohol-benzene mixture, and cleaned with massive reservoir brine until the pH value was 7, then dried at 60°C for 48 h. Afterwards, the cleaned reservoir brine was injected at a constant rate of 1 cm 3 /min by a positive displacement pump (ISCO 260D syringe pump) until the pressure drop became stable. The absolute permeability of the core (k 0 ) was calculated using Darcy's law [26]…”

Section: Core Flood Testsmentioning

confidence: 99%

Performance of cationic β‐cyclodextrin as a clay stabilizer for use in enhanced oil recovery

et al. 2014

View full text Add to dashboard Cite

In this study, a novel cationic cyclodextrin polymer was prepared by the polymerization reaction between allyl‐β‐cyclodextrin (A‐β‐CD) and acrylamide (AM), acrylic acid (AA), and diallyl benzyl propyl ammonium chloride (DABPAC) (A‐β‐CD/AM/AA/DABPAC). The cationic β‐cyclodextrin polymer was structurally characterized using FTIR and 1H NMR. On bases of XRD and SEM analyses, the possibility of interaction between polymer and clay surfaces was suggested. The layer formed around the clay surfaces apparently performed as a double protective layer preventing clay swelling and its molecular migration.

show abstract

“…Each specimen was tested three times to finally calculate the permeability. Then, the superficial permeability coefficient was calculated (Equations (2) and (3)) [32,33]. The superficial gas permeability coefficients (k g ) were corrected by the viscosity of air (µ = 1.81 × 10 −5 Pa s) for the calculation of the specific gas permeability (K g = k g µ).…”

Section: Gas Permeability Measurementmentioning

confidence: 99%

Paint Pull-Off Strength and Permeability in Nanosilver-Impregnated and Heat-Treated Beech Wood

2019

View full text Add to dashboard Cite

The effects of impregnation with nanosilver suspension as well as heat treatment on pull-off adhesion strength and specific air permeability in beech specimens were studied here. The size range of silver nanoparticles was 30–80 nm. The cross-section of specimens was cold-sprayed with unpigmented sealer-clear, polyester, and lacquer paints. Heat treatment, as the most commonly used wood modification, was applied at three different temperatures of 145, 165, and 185 °C. Results showed that the highest and lowest pull-off strengths were found in the un-impregnated and unheated specimens painted with polyester (8.98 MPa) and the unpainted unheated nanosilver-impregnated specimens (3.10 MPa), respectively. Impregnation with nanosilver resulted in the rupture of perforation plates and pit openings, and eventually, permeability increased significantly. As for the pull-off adhesion strength, the increased permeability resulted in the adhesive being penetrated in to the pores in the wood substrate, and eventually, a significant decrease in the pull-off strengths occurred. No significant correlation was found between pull-off strength versus specific air permeability, although both properties depend on the porous structure. This was due to the fact that permeability depends on the continuous pore system, while pull-off strength is dependent on the surface pore system of the substrate.

show abstract

Study on the Longitudinal Permeability of Oil Palm Wood

Cited by 17 publications

References 14 publications

Wetting enhanced by water adsorption in hygroscopic plantlike materials

Wetting enhanced by water adsorption in hygroscopic plantlike materials

Performance of cationic β‐cyclodextrin as a clay stabilizer for use in enhanced oil recovery

Paint Pull-Off Strength and Permeability in Nanosilver-Impregnated and Heat-Treated Beech Wood

Contact Info

Product

Resources

About