Effect of bone meal (calcium phosphate) amendments on metal release from contaminated soils - a leaching column study

M E  Hodson; E  Valsami-Jones; J D  Cotter-Howells; W E  Dubbin; A J  Kemp; I  Thornton; A  Warren

doi:10.1016/S0269-7491(00)00116-0

Effect of bone meal (calcium phosphate) amendments on metal release from contaminated soils - a leaching column study

M E Hodson, E Valsami-Jones, J D Cotter-Howells, W E Dubbin, A J Kemp, I Thornton, A Warren

Environment and Geography

Research output: Contribution to journal › Article › peer-review

Abstract

Metal-contaminated soil may be remediated in situ by the formation of highly insoluble metal phosphates if an appropriate phosphorus (P) source can be found. Leaching column experiments have been carried out to assess the suitability of bone meal as such a source. Bone meal additions reduced metal release from a contaminated soil, increased soil and leachate pH and decreased soil leachate toxicity. Minimal P leaching occurred from the soil. The data are consistent with a proton consuming bone meal (calcium phosphate) dissolution reaction followed by the formation of metal phosphates. Although, no metal phosphates were observed to form using X-ray diffraction or scanning electron microscopy this could be due to their low concentration. Relatively low (1:50 bone meal:soil) concentrations of fine (90-500 mum) bone meal would appear to be an effective treatment for metal-contaminated soils. (C) 2001 Elsevier Science Ltd. All rights reserved.

Original language	English
Pages (from-to)	233-243
Number of pages	11
Journal	Environmental Pollution
Volume	112
Issue number	2
DOIs	https://doi.org/10.1016/S0269-7491(00)00116-0
Publication status	Published - Apr 2001

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10.1016/S0269-7491(00)00116-0

Cite this

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title = "Effect of bone meal (calcium phosphate) amendments on metal release from contaminated soils - a leaching column study",

abstract = "Metal-contaminated soil may be remediated in situ by the formation of highly insoluble metal phosphates if an appropriate phosphorus (P) source can be found. Leaching column experiments have been carried out to assess the suitability of bone meal as such a source. Bone meal additions reduced metal release from a contaminated soil, increased soil and leachate pH and decreased soil leachate toxicity. Minimal P leaching occurred from the soil. The data are consistent with a proton consuming bone meal (calcium phosphate) dissolution reaction followed by the formation of metal phosphates. Although, no metal phosphates were observed to form using X-ray diffraction or scanning electron microscopy this could be due to their low concentration. Relatively low (1:50 bone meal:soil) concentrations of fine (90-500 mum) bone meal would appear to be an effective treatment for metal-contaminated soils. (C) 2001 Elsevier Science Ltd. All rights reserved.",

author = "Hodson, {M E} and E Valsami-Jones and Cotter-Howells, {J D} and Dubbin, {W E} and Kemp, {A J} and I Thornton and A Warren",

note = "{\textcopyright} 2001 Elsevier Science Ltd.",

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T1 - Effect of bone meal (calcium phosphate) amendments on metal release from contaminated soils - a leaching column study

AU - Hodson, M E

AU - Valsami-Jones, E

AU - Cotter-Howells, J D

AU - Dubbin, W E

AU - Kemp, A J

AU - Thornton, I

AU - Warren, A

PY - 2001/4

Y1 - 2001/4

N2 - Metal-contaminated soil may be remediated in situ by the formation of highly insoluble metal phosphates if an appropriate phosphorus (P) source can be found. Leaching column experiments have been carried out to assess the suitability of bone meal as such a source. Bone meal additions reduced metal release from a contaminated soil, increased soil and leachate pH and decreased soil leachate toxicity. Minimal P leaching occurred from the soil. The data are consistent with a proton consuming bone meal (calcium phosphate) dissolution reaction followed by the formation of metal phosphates. Although, no metal phosphates were observed to form using X-ray diffraction or scanning electron microscopy this could be due to their low concentration. Relatively low (1:50 bone meal:soil) concentrations of fine (90-500 mum) bone meal would appear to be an effective treatment for metal-contaminated soils. (C) 2001 Elsevier Science Ltd. All rights reserved.

AB - Metal-contaminated soil may be remediated in situ by the formation of highly insoluble metal phosphates if an appropriate phosphorus (P) source can be found. Leaching column experiments have been carried out to assess the suitability of bone meal as such a source. Bone meal additions reduced metal release from a contaminated soil, increased soil and leachate pH and decreased soil leachate toxicity. Minimal P leaching occurred from the soil. The data are consistent with a proton consuming bone meal (calcium phosphate) dissolution reaction followed by the formation of metal phosphates. Although, no metal phosphates were observed to form using X-ray diffraction or scanning electron microscopy this could be due to their low concentration. Relatively low (1:50 bone meal:soil) concentrations of fine (90-500 mum) bone meal would appear to be an effective treatment for metal-contaminated soils. (C) 2001 Elsevier Science Ltd. All rights reserved.

U2 - 10.1016/S0269-7491(00)00116-0

DO - 10.1016/S0269-7491(00)00116-0

M3 - Article

SN - 0269-7491

VL - 112

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JO - Environmental Pollution

JF - Environmental Pollution

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