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Behaviour of cadmium and nickel in a soil amended with sewage sludge
Author(s) -
Sastre I.,
Vicente M. A.,
Lobo M. C.
Publication year - 2001
Publication title -
land degradation and development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.403
H-Index - 81
eISSN - 1099-145X
pISSN - 1085-3278
DOI - 10.1002/ldr.421
Subject(s) - cadmium , sewage sludge , nickel , environmental chemistry , manganese , organic matter , sewage , environmental science , chemistry , contamination , soil contamination , soil water , environmental engineering , soil science , ecology , organic chemistry , biology
Abstract Various urban and industrial sewage sludges were applied to a soil at two doses (50 and 100 t ha −1 y −1 ) during eight years in a field experiment. The soil was analysed at two depths (0–30 and 30–60 cm) for extractable cadmium and nickel. In general these trace metal increased with dosage. However, cadmium formed complexes with organic matter and nickel bound to iron and manganese oxides. Hence, the available fractions of these metals constituted a small proportion of the total content. The results obtained show a low risk of contamination due to the available fractions of these metals at sludges dosages of up to 100 t ha −1 . Copyright © 2001 John Wiley & Sons, Ltd.