Short Technical Report, Water absorption kinetics by super-absorbent polymers T-A100 and T-A200

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EBRAHIMI S.; HOMAEE M.; VASHEGHANI FARAHANI E.

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Journal: Journal of Water and Soil Conservation Year:2019 | Volume:25 | Issue:6 Page(s): 293-301

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Title

Short Technical Report, Water absorption kinetics by super-absorbent polymers T-A100 and T-A200

Author(s)

EBRAHIMI S. | HOMAEE M. | VASHEGHANI FARAHANI E. | Issue Writer Certificate

Keywords

Adsorption kineticsQ2

Equilibrium swellingQ1

Fick's lawQ1

PolymersQ2

Super absorbentQ2

Abstract

Background and Objectives: The increase of irrigation efficiency is a technique for water conservation; therefore, appropriate management and the application of efficient methods in order to maintain enough water in the soil are essential for optimum utilization of scarce water resources of the country. The use of super-absorbent Polymers offers effective ways of saving water in agriculture. However, before selecting a suitable polymer, determining an appropriate model is essential. The purpose of this study was to study the inflation properties of superabsorbent Polymers in a peripheral environment by controlling the amount of swelling and determining the gel infiltration kinetics to determine the fluid adsorption model in Polymers. Materials and Methods: Water absorption model was measured by two superabsorbent Polymers from the polyacrylamide family, abbreviated T-A200 and T-A100, by performing a four-replicate experiment until the moment of equilibrium momentum and cumulative swelling and absorption. The fluid was immersed in distilled water. Then, the data diagram was obtained based on changes in the instantaneous absorbed ratio of the solvent relative to the equilibrium state with the time of drawing and the trend of adsorption of solvents. To determine the penetration mechanism, the corresponding model was used and finally, the coefficients n and k were calculated. Results: Absorption of fluid in heterogeneous environments such as gels was accompanied by considerable changes. The plotting of the graph in terms of the amount of solvent adsorbed instantaneously with time and the results showed that in all cases n was less than 0. 5 and as a result, the mechanism of transferring the solvent into the networks of the Polymers is well adhered to Fick's law. Conclusion: The appropriate super-absorbent polymer in agriculture should be able to minimize water absorption in the least amount of time, thus effectively preventing water loss in rain or irrigation. To prove it, the model should follow the Fick diffusion which penetration rate is lower than the speed of molecular relaxation and only diffusion phenomena is effective through the transfer of ground-penetrating, so, molecular relaxation phenomenon does not have an effect on the transfer of ground-penetrating. Consequently, after any deformation or swelling, the Polymers quickly reached a new balance and stresses will quickly vanish; therefore, it does not have any effect on the speed of penetrating component. In this study, the penetration of the fluid into the polymer followed the Fick model. Hence, this model would certainly be recommended to periodic swelling ability in agricultural purposes.

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APA: Copy

EBRAHIMI, S., HOMAEE, M., & VASHEGHANI FARAHANI, E.. (2019). Short Technical Report, Water absorption kinetics by super-absorbent polymers T-A100 and T-A200. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 25(6 ), 293-301. SID. https://sid.ir/paper/156423/en

Vancouver: Copy

EBRAHIMI S., HOMAEE M., VASHEGHANI FARAHANI E.. Short Technical Report, Water absorption kinetics by super-absorbent polymers T-A100 and T-A200. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2019;25(6 ):293-301. Available from: https://sid.ir/paper/156423/en

IEEE: Copy

S. EBRAHIMI, M. HOMAEE, and E. VASHEGHANI FARAHANI, “Short Technical Report, Water absorption kinetics by super-absorbent polymers T-A100 and T-A200,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 25, no. 6 , pp. 293–301, 2019, [Online]. Available: https://sid.ir/paper/156423/en

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