TY - JOUR
T1 - Time evolution of the general characteristics and Cu retention capacity in an acid soil amended with a bentonite winery waste
AU - Fernandez Calviño, David
AU - Rodríguez-Salgado, Isabel
AU - Pérez-Rodríguez, Paula
AU - Nóvoa-Muñoz, Juan Carlos
AU - Arias-Estévez, Manuel
PY - 2015/3/1
Y1 - 2015/3/1
N2 - The effect of bentonite waste added to a "poor" soil on its general characteristic and copper adsorption capacity was assessed. The soil was amended with different bentonite waste concentrations (0, 10, 20, 40 and 80Mgha-1) in laboratory pots, and different times of incubation of samples were tested (one day and one, four and eight months). The addition of bentonite waste increased the pH, organic matter content and phosphorus and potassium concentrations in the soil, being stable for P and K, whereas the organic matter decreased with time. Additionally, the copper sorption capacity of the soil and the energy of the Cu bonds increased with bentonite waste additions. However, the use of this type of waste in soil presented important drawbacks for waste dosages higher than 20Mgha-1, such as an excessive increase of the soil pH and an increase of copper in the soil solution.
AB - The effect of bentonite waste added to a "poor" soil on its general characteristic and copper adsorption capacity was assessed. The soil was amended with different bentonite waste concentrations (0, 10, 20, 40 and 80Mgha-1) in laboratory pots, and different times of incubation of samples were tested (one day and one, four and eight months). The addition of bentonite waste increased the pH, organic matter content and phosphorus and potassium concentrations in the soil, being stable for P and K, whereas the organic matter decreased with time. Additionally, the copper sorption capacity of the soil and the energy of the Cu bonds increased with bentonite waste additions. However, the use of this type of waste in soil presented important drawbacks for waste dosages higher than 20Mgha-1, such as an excessive increase of the soil pH and an increase of copper in the soil solution.
KW - Acid soil amendment
KW - Bentonite waste addition
KW - Cu mobilization
KW - Cu retention
KW - Waste reuse
U2 - 10.1016/j.jenvman.2014.12.024
DO - 10.1016/j.jenvman.2014.12.024
M3 - Journal article
C2 - 25560662
SN - 0301-4797
VL - 150
SP - 435
EP - 443
JO - Journal of Environmental Management
JF - Journal of Environmental Management
ER -