Introduction to Moisture Adsorption

Effects of tangential heat conduction and moisture adsorption hysteresis of the membrane on the heat recovery performance of cross-flow and counter-flow membrane enthalpy exchangers are investigated numerically.

Experiments show that the moisture adsorption of IG-110 is much lower than that of BC at various relative humidity.

The technique is expected to lower surface oxygen content, and improve material properties such as flowability, resistance to moisture adsorption, etc.

Such fluxed DRI exposed to 10 days open air (85% humidity) resulted in only 2 wt% moisture adsorption.

This paper also comprehensively reviews the recent perspectives and emerging technologies in the development of efficient adsorbent materials for air dehumidification, moisture adsorption–desorption characteristics, and its potential for food drying application.

The moisture adsorption-desorption tests show that the IHC-s coatings have moisture buffering values of ca.

Due to the tendency for excessive moisture adsorption by raw, unprocessed biomass, various methods of biomass valorization are in use, allowing for the improvement of physical–chemical biomass properties, including hydrophobicity.

Main difficulties in processing of PC/PA blends are the poor compatibility and high moisture adsorption capacity of the two raw materials complicating processing and also deteriorating mechanical properties of the products.

The microstructures of the produced samples were characterized by nitrogen adsorption/desorption technique and scanning electron microscopy while their hygrothermal properties including the thermal conductivity , the moisture adsorption/desorption performance and the moisture permeability were measured and tested.

The study further indicated that MW torrefaction of biomass-biochar mix with HDPE binder reduced the moisture adsorption of wheat and barley straw pellets, which can significantly improve their storage capability in humid locations.

Information on their moisture adsorption behaviors is needed for their storage conditions and quality control.

Moisture adsorption was evaluated at 30, 50, 75 and 95% relative humidity, and water resistance was determined after a 28-day immersion period.

Such a phenomenon results in undesirable appearance as well as in losses of bioactive compounds responsible for health benefits and in sugars adhering to the surface and hence increased moisture adsorption capability of the dried fruit.

In addition, moisture adsorption and absorption play a very vital engineering role during the seasonal changes of wet and dry seasons when the water table rises and drops.

Several research groups verified the possibility to collect energy from water moisture but often using graphene oxide [3] and various experimental arrangements, supported by different concepts and theoretical arguments, such as the moisture adsorption and diffusion processes.

It is suggested to use, for an assessment of energy efficiency and a comparative exergy analysis of various ETS for processing raw materials, along with exergy efficiency, specific exergy values characterizing exergy costs per unit of dried finished product, per unit of moisture removal and moisture adsorption.

The moisture adsorption isotherm curve shows type II isotherm based on the Brunauer-Emmett-Teller’s (BET) classification and was best described by the Oswin model.

Thus, the objective was to determine the moisture adsorption isotherms for WBF and PDBF, at temperatures of 20, 30, and 35 °C, in the range of water activity from 0.

Generally, fibers reinforcement decreased moisture adsorption.

Moisture adsorption isotherms were determined gravimetrically over 0.

Different from the diatomite addition, the calcium chloride addition could make more moisture adsorbed by mesopores and provide pores with higher moisture adsorption/desorption ability.

Phosphate acid-activated metakaolin geopolymer (PMG) was successfully prepared using a two-step curing method and the thermal stability, pore structure and moisture adsorption property of the obtained PMG were studied by techniques of thermogravimetry (TG), mercury intrusion porosimetry (MIP) and dynamic vapor sorption meter (DVS).

Durability, a crucial parameter in determining the quality of a wood pellet, is affected by moisture adsorption from the air.

The purpose of this study was to reduce moisture adsorption and caking strength through spray drying by using maltodextrin as wall materials and explore the hypoglycemic effect and molecular mechanism of TPs microcapsules.

It was found that the moisture adsorption/desorption isotherm affects the mass transfer greatly.

The variation in MCC’s incremental moisture adsorption with relative humidity shows a sharper change at higher humidities, comparable to tropical climatic conditions.

45 m3/ m3) in terms of the equilibrium moisture content and moisture adsorption capacity.

The samples were used to determine the equilibrium moisture content and the data fitted to the Guggenheim-Anderson-de Boer (GAB) equation to describe the moisture adsorption characteristics within the water activity used for this study.

94 µm caused by high porosity and moisture adsorption.

To elucidate the frequency-dependent viscoelasticity of wood under a moisture non-equilibrium state, changes in stiffness and damping as a function of frequency were investigated during the moisture adsorption process.

The fc value at moisture equilibrium state was lower than non-equilibrium state (no matter moisture adsorption or desorption).

11 mm) and a relatively slow moisture adsorption rate.

The changes in moisture adsorption and desorption were then evaluated for different wall constructions and different climate conditions using a parameter sensitivity analysis.

2 but did lead to a faster surface moisture adsorption rate at various relative humidities.

Effect of osmotic-ultrasound dehydration pretreatment on the moisture adsorption isotherms of microwave-assisted vacuum fried purple-fleshed sweet potato (PSP) was determined at 30, 45 and 60 °C and fitted with six models.

The rGO-MR films also experience changes in resistance in response to the moisture adsorption from human breaths and therefore can also be employed as a breathing sensor for health monitoring.

In the present work experimental studies have been carried out to quantify the moisture adsorption energy, for wood sawdust, cellulose and lignin with varying moisture content.

Temperature of 30 °C and relative humidity values of 30 %, 65 % and 85 % were used to conduct moisture adsorption tests.

To better characterize the moisture sorption of lignin, an approach for in situ qualitative and quantitative analysis of moisture adsorption in nanogram-scaled lignin by using micro-FTIR spectroscopy and partial least squares regression is introduced in this study.

This P(SSNa-BA-St)/PEDOT/graphene film exhibited highly transparent, good water resistance, low moisture adsorption, highly elastic and highly conductive properties, which can serve as a practical approach to fabricate the flexible, conductive and transparent films for wearable and implantable electronic devices, and photovoltaic cells.

8% mF/cm2, respectively, which were affected by the impurities, oxophilicity of niobium defects, and moisture adsorption in the cell.

The vapour pressure and isothermal adsorption of water vapour is used to predict soil moisture adsorption capacity ( Wa ) and the specific surface area.

This guide includes discussions on various properties of thermal insulation materials such as thermal conductivity heat capacity moisture resistance moisture adsorption and absorption capacity role of thermal and hygric mass in dynamic hydrothermal boundary conditions sustainability with regards to insulation materials embodied and operational energy with regards to insulation materials bio-based and synthetic insulation materials durability of insulation materials acoustics and insulation materials and economics of insulation materials.

Chemical composition, thermal, pasting, and moisture adsorption properties of flours from chickpea (Cicer aretinium L.

The maximum moisture adsorption capacity of CSH is about 2–3 times of ROP.

Here, a molecular dynamics approach is used to investigate the physical response of a typical hydrophilic biopolymer in softwood hemicellulose—xylan—when subjected to moisture adsorption.

This study demonstrated that the incorporation of anticaking agents is effective to maintain the quality of powder by extending the shelf life by lowering moisture adsorption.

The results herein implied that PEI/HMS composites would be a kind of appealing materials for moisture capture in GIS due to its superior moisture adsorption capacity and excellent cyclic performance.

The 24 h and saturated moisture adsorption–desorption contents reached 630 and 1700 g·m–2, respectively.

Finally, this numerical model highlights that taking into account coupled transfers has only a slight effect on the average energy consumed, while the heating power at the beginning of moisture steps is greatly decreased due to moisture adsorption.

Present study was conducted to compare the moisture adsorption isotherms of wheat, maize, cotton and quinoa seeds packed in hermetic Super Bag and traditional packaging materials including paper, polypropylene (PP), jute and cloth bags.

The better performance of porous particles was possibly caused by the moisture adsorption at night time and latent heat release at daytime.

The moisture adsorption and anticaking efficiency performances of modified products were investigated.

In order to characterize moisture adsorption of TEMPO oxidized cellulose nanocrystal film (TOCNF), a strategy for quantitative evaluation of moisture adsorption in TOCNF at the nanogram level is proposed here.

The changes of its properties and qualities in terms of moisture content, water activity, hygroscopicity, moisture adsorption isotherm, colour intensity, total phenolic content (TPC), viscosity, glass transition temperature (Tg), surface stickiness, hydroxymethylfurfural (HMF) content, and diastase activity were evaluated.

However, compared with natural leather, the wearing comfort of artificial leather is inferior due to its poor moisture adsorption and permeability.

Furthermore, the static contact angle, water absorption, moisture adsorption, and dimensional stability of the treated samples were evaluated.

In general, torrefied pellets showed lower moisture adsorption (up to 59%), higher carbon content (in the range of 21–25%), lower oxygen content (35–46%), and higher heating value (up to 22%) compared with their respective precursors.

To help identify the mechanism responsible for this salt-related deterioration and provide a theoretical basis for the development of a preventive conservation regime, this study addressed the basic moisture adsorption mechanisms of earthen plaster with soluble salts by taking an experimental approach.

Typical ionic dopants are hygroscopic, resulting in significant moisture adsorption and accelerated perovskite degradation.

MSI had type-II behavior and hysteresis were observed between the moisture adsorption and desorption isotherms, whose magnitudes decreased with higher temperatures.

RH, the moisture adsorption process of lignin could be separated to three parts.

Molecular dynamics (MD) simulations of 13C NMR longitudinal relaxation (T1) distributions were recently established as a powerful tool for characterizing moisture adsorption in natural amorphous po.

Furthermore, the measurements confirmed previous reports of moisture adsorption of wood under tensile stress.

The moisture adsorption isotherms of high-power short time microwave dried paprika (Capsicum annuum L.

The following moisture adsorption degrades the low-k properties and reliability.

Swelling strains in tangential ( Ɛ xx ) and radial ( Ɛ yy ) directions and Z -displacements in axial direction were measured on the cross section of wood samples from dried condition below P 2 O 5 to moisture adsorption condition at 20 °C and 90% RH.

This paper presents the results of several experimental studies on moisture adsorption phenomena using experimental design methodology and the gravimetric static method as keys to study the impact of temperature and humidity on the powder of the Taraxacum Officinale leaves as well as modeling the moisture adsorption at different temperatures.

The phase composition, thermal stability, moisture adsorption ability, and spectral characteristics of the specimens are studied.

Results confirmed the achievement of characteristic sigma-shaped moisture sorption isotherms with increasing moisture adsorption at higher values of relative humidity.

The results indicate that irrespective of the pore fluid chemistry, mechanical parameters including UCS, Young’s modulus and brittleness index reduce significantly in saturated coal, due to moisture adsorption-induced softening effect.

The most important quality parameters of solid bio-materials are the compressive strength, abrasion resistance, impact resistance, moisture adsorption, and density.

However, Cladophora cellulose (CC) extracted from green algae has unprecedented advantages over those celluloses because of its high crystallinity (>95%), low moisture adsorption capacity, excellent solution processability, high porosity in the mesoporous range, and associated high specific surface area.

The reliability of power devices after moisture adsorption and reflow soldering is a key problem to be overcome in project development.

The modified Brunauer, Emmett and Teller (BET) model was applied to analyse the moisture adsorption isotherms of lignite.

After molding with a glass fiber cloth, the composites (GSBT) exhibited moisture adsorption in the range of 1.

For this purpose, mechanical tests, kinetics of moisture adsorption, thermal conductivity and sound propagation speed are carried out.

Mechanical and chemical stabilities of silicon dioxide along with a proven manufacturing method of porous SiO2 samples made it convenient for studying the effects of moisture adsorption on various parameters of the porous media.

The increasing of protein concentration leads to decreasing opacity and moisture adsorption of films but improving its tensile strength and elongation at break.

Nanopores are very important to the moisture adsorption properties of humidity self-regulating ceramics (HSCs).

Hot wire thermal conductivity, moisture adsorption/desorption isotherm, moisture permeability and Moisture Buffer Value (MBV) tests were used to evaluate the hygrothermal behaviour.

The water activity significantly influenced the redispersibility of AN-NAP, which could be attributed to the microstructure collapse of amorphous matrix induced by moisture adsorption at high water activity or high moisture.

Water contact angle, swelling efficiency and moisture adsorption properties of LNP and MLNP based films were measured and compared, revealing an overall increase of dimensional stability and reduced moisture adsorption for MLNP nanocomposites.

Overall, the equilibrium moisture content, moisture adsorption, water absorption and volume swelling ratio were all decreased, while hygroscopic hysteresis was enhanced with increasing HT temperature.

After the In2O3 QDs were directly spin-coated onto the QCM, an annealing process removed organic long chains and exposed more moisture adsorption sites on the surfaces of the QDs.