2 edition of study on the physical and chemical effects resulting from the adsorption of sodium by a soil. found in the catalog.
study on the physical and chemical effects resulting from the adsorption of sodium by a soil.
Zahirul Hoque Bhuiya
Written in English
|Other titles||The physical and chemical effects resulting from the adsorption of sodium by a soil|
|Contributions||Toronto, Ont. University.|
|LC Classifications||LE3 T525 MSA 1961 B58|
|The Physical Object|
|Number of Pages||36|
The first part of the study consisted of applying these treatments to a slightly sodic (sodium adsorption ratio (SAR) of , pH of , and saturation paste extract electrical conductivity (EC),e) of dvSm-1) Freedom silt loam (fine-silty, mixed, Xerollic Calciorthids) soil in greenhouse weighing lysimeters (File Size: KB. The chemical composition of natural water is derived from many sources of solutes from the atmosphere, weathering of rocks and soil, chemical reactions occurring below the land surface and effects resulting from human Size: KB.
The water vapour adsorption on active aluminium oxide is the combined result of three processes: chemosorption, physical adsorption, and capillary condensation. A monolayer of hydrogen bonded water molecules covers the surface hydroxyls, such that the H 2 O:OH ratio is and this hydrogen bonded water is sometimes described as «quasi Author: Sergey Reshetnikov, Irina Kurzina, Alesia Livanova, Eugene Meshcheryakov, Lyubov Isupova. The need to design low-cost adsorbents for the detoxification of industrial effluents has been a growing concern for most environmental researchers. So modelling of experimental data from adsorption processes is a very important means of predicting the mechanisms of various adsorption systems. Therefore, this paper presents an overall review of the applications of adsorption isotherms, the use Cited by:
Adsorption is a general term that refers to the disappearance of solutes from solution with the presumption of adsorption on a solid phase. Adsorption is the accumulation at the solid-solution interface, and may result from either physical or chemical interaction with the surface. Physical adsorption is a relatively weak bonding toFile Size: KB. biological, chemical (treatment at 60 and C), and physical whicharereferredtoasBIO,CHEM60,CHEM,andPHYS, respectively, throughout the manuscript. Aging was carried out on biochar and AC alone (20 g), soil alone ( g) or a mixture of soil and either biochar or AC ( g with a 5% weight BC amendment). To ensure a homogeneous soil + BC.
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The main emphasis of research has been on use, antibacterial properties and production rather than on physical and chemical effects, especially in combination with other surfactants [12–15]. In the literature there are many examples of binary surfactant mixtures, but they are composed of classical synthetic surfactants [ 1, 3 – 7 ].Cited by: 2.
On the basis of the above results it can be seen that the cadmium concentration in the alluvial soil is highly influenced by its chemical and physical properties that are relevant to the adsorption ability (mainly clay composition and surface area).
Also, the low contents of the calcareous soil in clay, organic matter, and the relatively low surface area may explain the lower adsorption capacity of the Cited by: effects of sodium on soil properties, (iii) a discussion of factors that impede the infiltration rate and.
hydraulic conductivity, (iv) the changes that occur in ionic strength of percolating water in soil, and. (v) consideration of the wastewater and soil constituents that modify the effective sodium adsorption ratio.
The adsorption of the above activated carbons on phenol and three kinds of dyes (MB, BB1, and AB74) were used for an isotherm equilibrium adsorption study.
The data fitted the Langmuir isotherm. On the other hand, adsorption resulting from chemical bonding between adsorbent and adsorbate molecules is known as chemisorption (or chemical adsorption).
Since the surface area of the adsorbent has significant influence on the adsorption, high porosity and small particle size are two important requirements for good industrial adsorbents. Reactions at ionizable functional groups in extracellular polymeric substances (EPS) from Bacillus subtilis are found to affect aqueous phase conformation and adsorption to mineral surfaces.
Characterization by HPSEC, XPS, and FTIR indicates a wide range in apparent molecular mass (− kDa), with functional group composition depending on cell growth phase (exponential vs Cited by: Another feature of the physical adsorption of a gas by a solid is that it is reversible in nature and an equilibrium is established between the adsorbent and the adsorbate.
Increase of pressure increases the adsorption and the release of pressure desorbs the gas. When temperature is increased, the physical adsorption decreases and when it is lowered, the adsorption increases.
This effect seems to be the result of changes in the chemical nature of adsorption sites and porous structure of the mineral in the process of activation.
This condition is caused by changes in relative positions of aluminum-oxygen and silicate-oxygen tetrahedrons of the by: 8.
Sodic soils generally have a poor physical condition. To what is this most likely due. low organic matter content b.
high content of smectite in the soils c. impact of raindrops on the soil surface d. dispersal of the Na saturated soil colloids e. precipitation of the Ca2+ and Mg2+ ions as carbonates.
Sodium Adsorption Ratio (SAR) Sodium adsorption ratio is a measure of the amount of sodium (Na) relative to calcium (Ca) and magnesium (Mg) in the water extract from saturated soil paste.
It is the ratio of the Na concentration divided by the square root of one -half of the Ca + Mg concentration. Soils. AND DISCUSSION Effect of pH Effect of pH on the adsorption capacity of adsorbent dose was studied in the pH range 1 to The percentage of dye adsorption was determined by varying the pH of the solution, fixing the other parameters constant File Size: KB.
Abstract. The theoretical chemical basis of the sodium adsorption ratio (SAR) was examined in order to clarify two important issues that arise in connection with the problem of estimating potential sodium hazard: (i) the relation between SAR and the theory of cation exchange, and (ii) the implications of the universal practice of replacing SAR by what may be termed the practical SAR, which.
The ill effects of acidity in subsoils can be ameliorated by adding gypsum to the soil surface. Which of the following most likely helps account for this effect. Gypsum dissolves and leaches downward, increasing the Ca/Al ratio in the soil solution in subsoil layers.
The adsorption behavior of mercury on Aspergillus versicolor biomass (AVB) has been investigated in aqueous solution to understand the physicochemical process involved and to explore the potentiality of AVB in pollution control management.
This biomass has been successfully used for reducing the mercury concentration level in the effluent of chloralkali and battery industries to a permissible Cited by: Part of the Advances in Soil Science book series (SOIL, volume 9) Abstract Gypsum is a relatively common mineral that is widely available in agricultural areas and has a number of specialized agronomic uses, principally as a Ca source on legumes and as a soil conditioner on sodic by: Chemical Adsorption.
Chemical adsorption, or chemisorption, is characterized by chemical interactions that can range from very weak to at least times stronger than physisorption. In chemical adsorption (as the name implies) there is some chemistry involved.
In other words, chemical bond formation is required. Bian et al. 40 reported a similar result that the inclusion complex of herbicide butachlor with β-CD showed low adsorption potency in soil. BSM/2-HP-β-CD had lower adsorption Cited by: 5. both a flow-through column experiment and batch tests to determine the physico -chemical changes in the soil post irrigation and sodium adsorption potential of each soil respectively.
Three types of soils were used in this study as not to generalise soils as a whole. In addition, the soils are common agricultural soils in Australia. Effect of sodium adsorption ratio and electric conductivity of the applied water on infiltration in a sandy-loam soil Abdulwahed M Aboukarima1,3, Mohammed A Al-Sulaiman2 and Mohamed SA el Marazky1, 3* 1Agricultural Engineering Research Institute (AEnRI), Agricultural Research Centre, P.O.
BoxGiza, Egypt 2Shaqra University, Saudi Arabia, P.O. BoxRiyadhSaudi ArabiaFile Size: 1MB. Soil dispersion is a phenomenon in which soil particles become afloat when they are exposed to water, and are carried away by the force of seepage.
In spite of that soil dispersion is due to its chemical composition, the results obtained from the chemical methods, especially from the most widely used, Sherard method does not match with the results of well-known Pinhole test.
This study Cited by:. Soil amendments are materials, such as gypsum or calcium chloride, that directly supply soluble calcium for the replacement of exchangeable sodium, or other substances, such as sulphuric acid and sulphur, that indirectly through chemical or biological action, make the relatively insoluble calcium carbonate commonly found in sodic soils, available for replacement of sodium.They concluded that by improving the organic matter status of a soil, the effect due to sodicity on soil strength can be modified.
The objective of this study is to investigate the effect of SAR and EC on tensile strength of soils under different cultivation management with varying organic matter content. This study is a basic laboratory by: Water-soluble or oil-soluble reflects important physical and chemical parameters of surfactant is an important basis for a reasonable choice of surfactant.
Surfactants are to make a significant decrease in surface tension or to reduce the surface tension between two liquids.