文档介绍：Environmental Pollution 144 (2006) 816e825
ate/envpol
Use of bone meal amendments to immobilise Pb, Zn and Cd
in soil: A leaching column study
. Sneddon a,1, M. Orueetxebarria a,b, . Hodson a,c, . Schofield a,
E. Valsami-Jones a,*
a Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
b Environmental Science, School of Bioscience, The University of Nottingham, University Park, Nottingham NG7 2RD, UK
c Department of Soil Science, School of Human and Environmental Sciences, The University of Reading, Whiteknights, Reading RG6 6DW, UK
Received 25 August 2005; received in revised form 7 February 2006; accepted 10 February 2006
An extended (18 months) leaching column study of metal (Pb, Zn, Cd) immobilisation using bone meal as a source of phosphate,
demonstrating positive results.
Abstract
The aim of this study is to test the stabilisation of metals in contaminated soils via the formation of low-solubility metal phosphates. Bone
apatite, in the form mercially available bone meal, was tested as a phosphate source on a mine waste contaminated made-ground with
high levels of Pb, Zn and Cd. Triplicate leaching columns were set up at bone meal to soil ratios of 1:25 and 1:10, in addition to unamended
controls, and were run for 18 months. The columns were irrigated daily with a synthetic rain solution at pH of 2, 3, an