Biochar from sewage sludge and pruning trees reduced porewater Cd, Pb and Zn concentrations in acidic, but not basic, mine soils under hydric conditions

1. Álvarez-Rogel, J.
2. Tercero Gómez, M.D.C.
3. Conesa, H.M.
4. Párraga-Aguado, I.
5. González-Alcaraz, M.N.