Immobilization of Cadmium and Lead

A Three-year Experiment Confirms Continuous Immobilization of Cadmium and Lead in Contaminated Paddy Field With Biochar Amendment

Highlights

• Biochar significantly increased soil pH, organic matter and immobilized soil Cd and Pb.
• Biochar treatment consistently reduced rice Cd and Pb content in three years.
• Contaminated biochar from the study field contained much higher heavy metals than fresh biochar. • Biochar caused metal immobilization primarily due to the precipitation and surface adsorption.

Rongjun Biana, Stephen Josepha, Liqiang Cuia, Genxing Pana,, Lianqing Lia, Xiaoyu Liua, Afeng Zhanga, Helen Rutlidgef, Singwei Wonge, Chee Chiac, Chris Marjof, Bin Gongf, Paul Munroec, Scott Donned

Journal of Hazardous Materials, 2014