Absorption and desorption of liquid water by a superabsorbent polymer: Effect of polymer in the drying of the soil and the quality of certain plants

Abstract

ABSTRACT:In this work, we were interested in the study of the kinetic behavior of the reaction of drying soil representing the Marrakesh region (south of Morocco) in the presence of an superabsorbent polymer. The presence of a polymer in the soil diminished the kinetic drying of the soil, which will have as an application a reduction in water loss in the process of irrigation. The presence of a polymer in the soil enables a complete modification of the kinetic regimes controlling the soil-drying kinetic. We also realized the first study of the behavior of certain selected plants in the melange of a soil and a polymer.

Synthesis and characterization of high performance superabsorbent hydrogels using bis[2-(methacryloyloxy)ethyl] phosphate as crosslinker

“…At crosslinker concentrations higher than 0,00118 M, hydrogels with higher crosslinking densities were obtained, leading to lower water absorption capacities. In these conditions, a tighter network structure, with a high number of crosslinking points is expected, which results in a reduction in the absorption capacity of the hydrogel [9]. The swelling profiles in distilled water ( Figure 3) also shows that all SAPs present a fast water absorption capacity.…”

“…This characteristic proves to be quite useful and advantageous for a precise supply of nutrients to plants. Among other aspects, it allows the correction of environmental deficiencies, avoiding additional costs due to excessive fertilization and agrochemical wastes [8], reducing water runoff and erosion, enabling the recovery of desertified and slightly fertile areas and others [7,9]. The present work involved the synthesis of hydrogels with extremely high swelling properties and a promising potential for use in agricultural applications, either as water reservoirs or as agrochemical release systems.…”

Étude thermodynamique du polymère super absorbant X10 vis–à–vis de l’eau vapeur

“…Il est préparé à partir de l'acide acrylique et peut absorber jusqu'à 1000 fois son poids en eau. En effet, en présence de l'eau liquide, le polymère se gonfle instantanément et rapidement pour donner naissance à un gel polyélectrolytique mou et transparent [14,15]. L'aspect général du polymère se présente sous forme de sphères déformées et l'aspect surfacique est non poreux.…”

Abordagem Multivariada Do Uso Do Hidrogel Em Espécies Nativas Do Cerrado Em Área Degradada

“…O uso de hidrogéis é frequentemente indicado para regiões áridas e sujeitas a períodos de seca, como o Cerrado (BAKASS et al, 2002;EKEBAFE et al, 2011;SHOOSHTARIAN et al, 2012), uma vez que o hidrogel, ao ser adicionado à cova de plantio, possui a capacidade de aumentar a retenção de água no solo e fornece-la lentamente às plantas. Dessa forma, ele pode contribuir para o desenvolvimento vegetal, pois, o desempenho da água na vida das plantas é essencial, sendo que sua principal função consiste em atuar como meio de transporte de elementos nutritivos (EKEBAFE et al, 2011;CARVALHO et al, 2013).…”