INFLUENCE OF NITRATES, PHOSPHATE, SULPHATE AND SALTS OF Ca, Mg AND K, ON HYDROGEL HYDRATATION CAPACITY
ABSTRACT Hydrogel hydration capacity in solution was evaluated at different levels of electrical conductivity (EC) using nitrate, phosphates, sulfates, and salts of calcium, potassium and magnesium. Four sequential experiments were performed using potassium polyacrylate copolymer. The first experime...
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| Format: | Article |
| Language: | English |
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Sociedade de Investigações Florestais
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| Series: | Revista Árvore |
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| Online Access: | http://www.scielo.br/pdf/rarv/v44/0100-6762-rarv-44-e4408.pdf |
| _version_ | 1819101631681134592 |
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| author | Orlando Sílvio Caires Neves Igor Glaeser da Rocha Eduarda Demari Avrella Luciana Pinto Paim Claudimar Sidnei Fior |
| author_facet | Orlando Sílvio Caires Neves Igor Glaeser da Rocha Eduarda Demari Avrella Luciana Pinto Paim Claudimar Sidnei Fior |
| author_sort | Orlando Sílvio Caires Neves |
| collection | DOAJ |
| description | ABSTRACT Hydrogel hydration capacity in solution was evaluated at different levels of electrical conductivity (EC) using nitrate, phosphates, sulfates, and salts of calcium, potassium and magnesium. Four sequential experiments were performed using potassium polyacrylate copolymer. The first experiment aimed to determine the lowest hydrogel dose, at which occur maximum deionized water absorption. The test was assembled in a completely randomized design with six hydrogel doses (1, 2, 4, 6, 8 and 10 g L-1) and four replicates. The second experiment consisted of testing the sucrose P.A. doses (0, 1, 2, 4 and 6 %) in order to evaluate the change in osmotic potential of the solution on hydrogel hydration. The third and fourth studies were carried out in a complete randomized design, using a 6 x 3 x 2 factorial scheme with four replicates. For the third experiment, the factors were six levels of EC (0; 0.25; 0.50; 1.00; 1.50 and 2.00 mS cm1) increased by the addition of three anions (NO3-; PO43- and SO42-) along with counter-ions Ca++ and K+. For the fourth experiment, the same six levels of EC were achieved by adding the three cations (Ca++, Mg++ and K+), along with the counter-ions Cl- and SO42-. Hydration capacity of the hydrogel decreases when the ionic concentration of the solution increases and the reduction of the osmotic potential through the addition of sucrose does not interfere in its swelling capability. Anions and cations in the solution negatively influence the process of the hydrogel hydration. The most pronounced effect is for those with higher valence. |
| first_indexed | 2024-12-22T01:21:45Z |
| format | Article |
| id | doaj.art-d32c7fe20ebb471f9a33a05f716343c4 |
| institution | Directory Open Access Journal |
| issn | 1806-9088 |
| language | English |
| last_indexed | 2024-12-22T01:21:45Z |
| publisher | Sociedade de Investigações Florestais |
| record_format | Article |
| series | Revista Árvore |
| spelling | doaj.art-d32c7fe20ebb471f9a33a05f716343c42022-12-21T18:43:42ZengSociedade de Investigações FlorestaisRevista Árvore1806-908810.1590/1806-908820200000008INFLUENCE OF NITRATES, PHOSPHATE, SULPHATE AND SALTS OF Ca, Mg AND K, ON HYDROGEL HYDRATATION CAPACITYOrlando Sílvio Caires NevesIgor Glaeser da RochaEduarda Demari AvrellaLuciana Pinto PaimClaudimar Sidnei FiorABSTRACT Hydrogel hydration capacity in solution was evaluated at different levels of electrical conductivity (EC) using nitrate, phosphates, sulfates, and salts of calcium, potassium and magnesium. Four sequential experiments were performed using potassium polyacrylate copolymer. The first experiment aimed to determine the lowest hydrogel dose, at which occur maximum deionized water absorption. The test was assembled in a completely randomized design with six hydrogel doses (1, 2, 4, 6, 8 and 10 g L-1) and four replicates. The second experiment consisted of testing the sucrose P.A. doses (0, 1, 2, 4 and 6 %) in order to evaluate the change in osmotic potential of the solution on hydrogel hydration. The third and fourth studies were carried out in a complete randomized design, using a 6 x 3 x 2 factorial scheme with four replicates. For the third experiment, the factors were six levels of EC (0; 0.25; 0.50; 1.00; 1.50 and 2.00 mS cm1) increased by the addition of three anions (NO3-; PO43- and SO42-) along with counter-ions Ca++ and K+. For the fourth experiment, the same six levels of EC were achieved by adding the three cations (Ca++, Mg++ and K+), along with the counter-ions Cl- and SO42-. Hydration capacity of the hydrogel decreases when the ionic concentration of the solution increases and the reduction of the osmotic potential through the addition of sucrose does not interfere in its swelling capability. Anions and cations in the solution negatively influence the process of the hydrogel hydration. The most pronounced effect is for those with higher valence.http://www.scielo.br/pdf/rarv/v44/0100-6762-rarv-44-e4408.pdfHydroretenctorIonsPolyacrylate |
| spellingShingle | Orlando Sílvio Caires Neves Igor Glaeser da Rocha Eduarda Demari Avrella Luciana Pinto Paim Claudimar Sidnei Fior INFLUENCE OF NITRATES, PHOSPHATE, SULPHATE AND SALTS OF Ca, Mg AND K, ON HYDROGEL HYDRATATION CAPACITY Revista Árvore Hydroretenctor Ions Polyacrylate |
| title | INFLUENCE OF NITRATES, PHOSPHATE, SULPHATE AND SALTS OF Ca, Mg AND K, ON HYDROGEL HYDRATATION CAPACITY |
| title_full | INFLUENCE OF NITRATES, PHOSPHATE, SULPHATE AND SALTS OF Ca, Mg AND K, ON HYDROGEL HYDRATATION CAPACITY |
| title_fullStr | INFLUENCE OF NITRATES, PHOSPHATE, SULPHATE AND SALTS OF Ca, Mg AND K, ON HYDROGEL HYDRATATION CAPACITY |
| title_full_unstemmed | INFLUENCE OF NITRATES, PHOSPHATE, SULPHATE AND SALTS OF Ca, Mg AND K, ON HYDROGEL HYDRATATION CAPACITY |
| title_short | INFLUENCE OF NITRATES, PHOSPHATE, SULPHATE AND SALTS OF Ca, Mg AND K, ON HYDROGEL HYDRATATION CAPACITY |
| title_sort | influence of nitrates phosphate sulphate and salts of ca mg and k on hydrogel hydratation capacity |
| topic | Hydroretenctor Ions Polyacrylate |
| url | http://www.scielo.br/pdf/rarv/v44/0100-6762-rarv-44-e4408.pdf |
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