Release characteristics of ion-exchange resins as buffers in low ionic strength nutrient solutions

Kerven G.L., Asher C.J. and Dethlefs L. (1993) Release characteristics of ion-exchange resins as buffers in low ionic strength nutrient solutions. Plant and Soil, 155-156 1: 239-242. doi:10.1007/BF00025028


Author Kerven G.L.
Asher C.J.
Dethlefs L.
Title Release characteristics of ion-exchange resins as buffers in low ionic strength nutrient solutions
Journal name Plant and Soil   Check publisher's open access policy
ISSN 0032-079X
Publication date 1993-01-01
Sub-type Article (original research)
DOI 10.1007/BF00025028
Open Access Status
Volume 155-156
Issue 1
Start page 239
End page 242
Total pages 4
Publisher Kluwer Academic Publishers
Subject 1111 Nutrition and Dietetics
1110 Nursing
1102 Cardiovascular Medicine and Haematology
Abstract The use of synthetic ion-exchange resins as buffers of nutrient ions is a potential mechanism for the control of ion concentrations in nutrient solutions. In this study equilibrium constants for two cation exchange resins and three anion exchange resins were determined at 25°C in low ionic strength systems. The measured constants were used to successfully predict the resin combinations required to achieve desired solution equilibrium concentrations. The effectiveness of these resins in buffering solution ion concentrations was evaluated by examining their release characteristics in circulating systems from which aliquots of solution were withdrawn and replaced with deionised water to simulate plant uptake. Buffering of NO3 and SO4 concentrations was effective when manual control of one anion was imposed. The cation resins were ineffective in buffering the concentrations of Ca and Mg with a tendency for the resins to retain most of the Ca and Mg in adsorbed form.
Keyword ion-exchange resins
nutrient solution
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 23 Aug 2016, 14:02:39 EST by System User