Dairy Manure Derived Biochar Effectively Sorbs Lead and Atrazine

Dairy-Manure Derived Biochar Effectively Sorbs Lead and Atrazine X I N D E C A O , * , † , ‡ L E N A M A , ‡ B I N G A O , § A N D W I L L I E H A R R I S ‡ School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240,... More

Dairy-Manure Derived Biochar Effectively Sorbs Lead and Atrazine X I N D E C A O , * , † , ‡ L E N A M A , ‡ B I N G A O , § A N D W I L L I E H A R R I S ‡ School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, Soil and Water Science Department, and Agricultural and Biological Engineering Department, University of Florida, Gainesville, Florida 32611 Received November 13, 2008. Revised manuscript received January 30, 2009. Accepted March 3, 2009. Biochar (BC) produced from agricultural crop residues has proven effective in sorbing organic contaminants. This study evaluated the ability of dairy-manure derived biochar to sorb heavy metal Pb and organic contaminant atrazine. Two biochar samples were prepared by heating dairy manure at low temperature of 200 °C (BC200) and 350 °C (BC350). The untreated manure (BC25) and a commercial activated C (AC) were included as controls. Sorption of Pb by biochar followed a dual Langmuir-Langmuir Less