RT Journal Article
T1 A Novel Technosol Formulation for Sustainable Landfill Top Covers Using Non-Hazardous Wastes
A1 Fernández Caliani, Juan Carlos
A1 Álvarez Lozano, Julia
A1 García Navarro, Encarnación
A1 Fernández Landero, Sandra
A1 Cantero, Cristobal
A1 Giráldez Díaz, Inmaculada
AB This study explores the potential of non-hazardous wastes for crafting an engineeredsoil-like material (Technosol) suitable for landfill capping applications. Three distinct materials—waste foundry sand (WFS), washing aggregate sludge (WAS), and composted biosolids (CBS)—werestrategically combined to develop this innovative Technosol. The formulation process involved a comprehensive analysis of their physical–chemical properties, mineral composition, leachate quality, anda series of geotechnical assessments to ensure compliance with landfill top cover construction standards. The blend 90WFS/10WAS showed optimal geotechnical properties for constructing a protective layer, including maximum dry density (1.77 g cm−3), void ratio (0.4), CBR index (23.2), cohesivestrength (40 kPa), internal friction (ϕ = 30◦), and permeability coefficient (k = 1.48 × 10−6cm s−1).Further enhancement was achieved by adding 10% CBS, resulting in the development of a functionalorgano-mineral topsoil horizon (81WFS/9WAS/10CBS). Importantly, leachate analysis confirmedthe negligible environmental footprint of this Technosol. Moreover, a pot-based experiment withBrassica juncea planting validated its capacity to support plant growth and establish a vegetativecover on the landfill surface
PB MPDI
SN 2076-3417 (electrónico)
YR 2024
FD 2024-07
LK https://hdl.handle.net/10272/24203
UL https://hdl.handle.net/10272/24203
LA eng
NO Fernández-Caliani, J. C., Álvarez-Lozano, J., García-Navarro, E., Fernández-Landero, S., Cantero, C., & Giráldez, M. I. (2024). A Novel Technosol Formulation for Sustainable Landfill Top Covers Using Non-Hazardous Wastes. In Applied Sciences (Vol. 14, Issue 14, p. 6166). MDPI AG. https://doi.org/10.3390/app14146166
NO : We express our gratitude to the following companies for their collaboration andassistance in sample collection: Áridos de la Luz (San Juan del Puerto, Huelva, Spain), FundicionesRoma (Mérida, Badajoz, Spain), and EMASESA (Seville, Spain). We also extent our appreciation toNereida Pascual, Lourdes Vales, and Alicia Rodríguez (DSM, Centro Ambiental de Nerva, Huelva,Spain), and Alberto Ortiz (EMASESA) for their valuable contributions in providing essential information about the waste materials
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026