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Published online 27 October 2006
Published in J Environ Qual 35:2222-2228 (2006)
DOI: 10.2134/jeq2006.0093
© 2006 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Use of Magnesia for Boron Removal from Irrigation Water

Nina Dionisioua, Theodora Matsib,* and Nikolaos D. Misopolinosa

a Laboratory of Applied Soil Science, Faculty of Agriculture, Aristotle University of Thessaloniki (A.U.Th.), 54124, Thessaloniki, Greece
b Soil Science Laboratory, Faculty of Agriculture, Aristotle University of Thessaloniki (A.U.Th.), 54124, Thessaloniki, Greece


Figure 1
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  		Fig. 1. Freundlich isotherms for B adsorption on (a) reagent-grade MgO and on (b) magnesia at 25°C.

 

Figure 2
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  		Fig. 2. Langmuir isotherms for B adsorption on (a) reagent-grade MgO and on (b) magnesia at 25°C.

 

Figure 3
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  		Fig. 3. X-ray diffraction patterns of reagent-grade MgO before and after wetting and drying.

 

Figure 4
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  		Fig. 4. X-ray diffraction patterns of magnesia before and after wetting and drying.

 

Figure 5
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  		Fig. 5. Boron adsorption isotherms for (a) reagent-grade MgO and (b) magnesia at two temperatures.

 

Figure 6
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  		Fig. 6. Cumulative amounts of desorbed B from reagent-grade MgO and magnesia after B addition of (a) 5 mg g–1 and (b) 0.5 mg g–1 and 30-d contact time. Each step represents a 24-h desorption interval.

 




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