Phosphorus retention on forest and vineyard soil samples, mussel shell, pine-sawdust, and on pyritic, granitic and waste materials

• Published in: Geoderma Vol. 280; pp. 8 - 13
• Main Authors: Romar-Gasalla, Aurora, Rivas-Pérez, Ivana M., Paradelo-Núñez, Remigio, Nóvoa-Muñoz, Juan Carlos, Arias-Estévez, Manuel, Fernández-Sanjurjo, María J., Álvarez-Rodríguez, Esperanza, Núñez-Delgado, Avelino
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.10.2016
• Subjects: Ashes; By-products; Byproducts; forest soils; Forests; Mussels; Phosphorus; Retention; sewage sludge; shell (molluscs); Slates; Soil (material); soil sampling; sorption isotherms; vineyard soils; Vineyards; Waste materials; Wastes; wood ash; Waste materials; Phosphorus; Retention; By-products
• ISSN: 0016-7061; 1872-6259
• DOI: 10.1016/j.geoderma.2016.06.003

Focusing on P, we used batch-type experiments to study P retention on various materials: a forest soil sample, a vineyard soil sample, finely and coarsely ground mussel shell, pine-sawdust, pyritic material, granitic material, mussel shell calcination ash, slate processing fines, and three different mixtures that included three components: sewage sludge, mussel shell ash, and calcined mussel shell or pine wood ash. The pyritic material and the mussel shell ash showed the highest P retention capacity, reaching >95%. The lowest P retention (<60%) corresponded to the pine-sawdust and slate processing fines. Data fitted satisfactorily to the Freundlich model, unless in the case of pine-sawdust and slate fines; however, only forest and vineyard soil samples can be satisfactorily adjusted to the Langmuir model. These results could be useful to program appropriate management practices, especially when focusing on controlling P concentrations in different environmental compartments, as well as to correctly recycle the by-products and waste materials assayed. •We study P retention on soil samples, by-products and waste materials.•The pyritic material and mussel shell ash showed the highest P sorption (>95%).•The lowest P sorption (<60%) corresponded to pine sawdust and slate processing fines.•Sorption data fitted satisfactorily to the Freundlich model in most cases.