Durability indicatives of hydrogel for agricultural and forestry use in saline conditions

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dc.contributor.authorNascimento, Carla Danielle Vasconcelos do
dc.contributor.authorAndrade Feitosa, Judith Pessoa de
dc.contributor.authorSimmons, Robert
dc.contributor.authorDias, Carlos Tadeu dos Santos
dc.contributor.authorNascimento, Ícaro Vasconcelos do
dc.contributor.authorMota, Jaedson Cláudio Anunciato
dc.contributor.authorCosta, Mirian Cristina Gomes
dc.date.accessioned2021-09-15T14:59:34Z
dc.date.available2021-09-15T14:59:34Z
dc.date.issued2021-09-06
dc.description.abstractThis research tested the hypothesis that the interaction between time and salinity reduces the water absorption potential of a hydrogel – Poly (Acrylamide-co-Potassium Acrylate) and influence the degradation of residual acrylamide monomer. The experimental design was completely randomized split-plot with four replications. The treatments were time periods (30, 60, 90 and 120 days) and levels of salinity of the hydrating solution (distilled water = 0.003, 0.5; 1.5; 3.0 and 6.0 dS m−1). Swelling, hydrogel composition, and residual acrylamide monomer concentration were evaluated. The hydrogel showed lowest water absorption potential (8.1 g g−1) in a saline solution of 4.20 dS m−1 after 120 days. The C/N ratio of the hydrogel increased by up to 47% in a hydrating solution with an EC of 4.4 dS m−1 at 120 days. Additionally, there was an observed shift in the wavelength of methylene, amide, and acrylate bands, that indicates degradation. Residual acrylamide monomer concentration was <0.5 mg g−1 (safe for agricultural use). After 120 days up to 85% of the residual acrylamide monomer was degraded. About the water absorption potential, the results suggest that under semi-arid conditions hydrogel durability for forestry and crops applications may be impaired by the salinity of the hydrating solution.en_UK
dc.identifier.citationdo Nascimento CD, de Andrade Feitosa JP, Simmons R, et al., (2021) Durability indicatives of hydrogel for agricultural and forestry use in saline conditions. Journal of Arid Environments, Volume 195, December 2021, Article number 104622en_UK
dc.identifier.issn0140-1963
dc.identifier.urihttps://doi.org/10.1016/j.jaridenv.2021.104622
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17082
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectIrrigation water salinityen_UK
dc.subjectPoly (Acrylamide-co-Potassium Acrylate)en_UK
dc.subjectSoil conditioneren_UK
dc.titleDurability indicatives of hydrogel for agricultural and forestry use in saline conditionsen_UK
dc.typeArticleen_UK

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