Effects of biochar and Arbuscular mycorrhizae on bioavailability of potentially toxic elements in an aged contaminated soil

Environmental Pollution
Yuhui QiaoHuafen Li

Abstract

Biochar pyrolyzed from corn stalks at 300°C/500°C and arbuscular mycorrhizae (AMF) were examined independently and in combination as possible treatments for soil remediation contaminated with Cd, Cr, Ni, Cu, Pb, Zn after 35 years following land application of sewage sludge in the 1970s. The results showed that biochar significantly decreased the heavy metal concentrations and their bioavailability for plants, and both biochars had similar such effects. AMF inoculation of corn plants had little effect on heavy metal bioavailability in either control or biochar amended soil, and no interaction between biochar and AMF was observed. Changes in DTPA extractable metals following biochar addition to soil were correlated with metal uptake by plants, whereas pore water metal concentrations were not predictive indicators. This research demonstrates positive benefits from biochar application for contaminated soil remediation, but remain ambiguous with regard to the benefits of simultaneous AMF inoculation on reduction of heavy metal bioavailability.

References

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Mar 17, 2006·Environmental Pollution·Jurate KumpieneChristian Maurice
Aug 16, 2006·FEMS Microbiology Ecology·Matthias C RilligJames E Gannon
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Nov 27, 2010·Environmental Pollution·Luke Beesley, Marta Marmiroli

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Citations

Apr 12, 2016·Environmental Geochemistry and Health·Muhammad RizwanFakhir Hannan
Jan 13, 2017·Environmental Science and Pollution Research International·Frédéric ReesSylvie Cotelle
Jan 18, 2020·Environmental Science and Pollution Research International·Yan XiaoYeye Che
Oct 14, 2020·International Journal of Phytoremediation·Mohan LiuYan Xiao
May 17, 2021·Environmental Pollution·Zahra ArabiEduardo Moreno-Jiménez
Oct 8, 2021·The Science of the Total Environment·Hao WangWeixiang Wu

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