1. School of Environment, Tsinghua University, Beijing, China;
2. Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea;
3. Department of Green Chemistry and Technology, Ghent University, Ghent, Belgium;
4. School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, University of Wuppertal, Wuppertal, Germany;
5. Department of Environment, Energy and Geoinformatics, Sejong University, Seoul, Republic of Korea