RT Journal Article
T1 Long-Term Sustainability of Marble Waste Sludge in Reducing Soil Acidity and Heavy Metal Release in a Contaminated Mine Technosol
A1 Fernández Caliani, Juan Carlos
A1 Giráldez Díaz, Inmaculada
A1 Fernández Landero, Sandra
A1 Barba Brioso, Cinta
A1 Morales Carrillo de Albornoz, Emilio
AB A field‐based experiment was set up to evaluate the effectiveness of a single applicationof marble waste sludge (MWS) on chemical immobilization of potentially hazardous trace elements(PHE) within the soil profile of a mine Technosol under natural assisted remediation for 12 years.Results showed that MWS amendment significantly reduced soil acidity and PHE mobility com‐pared to unamended soil, thus improving soil health and plant growth. The amendment applica‐tion had a sustained acid‐neutralizing action, as soil pH remains relatively constant at between 5.8and 6.4 throughout the entire profile (70 cm depth). In addition to diluting pollutants, the treat‐ment triggered a redistribution of trace elements among the various operationally defined geo‐chemical pools, shifting the PHE speciation from water‐soluble forms to fractions associated withcarbonates (29% Cd), metal oxides (40–48% Zn, Cd, Cu, and Ni), organic matter (22% Cu and Ni),and insoluble secondary oxidation minerals and residual phases (80–99% As, Cr, Sb, Tl, and Pb),thereby effectively limiting its potential environmental significance. MWS treatment to immobilizePHE in the contaminated mine Technosol was effective and persistent while in the untreated soilmetal release is continuing over time
PB MDPI
SN 2076-3417 (electrónico)
YR 2022
FD 2022-07
LK http://hdl.handle.net/10272/21077
UL http://hdl.handle.net/10272/21077
LA eng
NO Fernández-Caliani, J. C., Giráldez, I., Fernández-Landero, S., Barba-Brioso, C., & Morales, E. (2022). Long-Term Sustainability of Marble Waste Sludge in Reducing Soil Acidity and Heavy Metal Release in a Contaminated Mine Technosol. In Applied Sciences (Vol. 12, Issue 14, p. 6998). MDPI AG. https://doi.org/10.3390/app12146998
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026