Comparison of biochars derived from different types of feedstock and their potential for heavy metal removal in multiple-metal solutions - Zhao, Jing Jing (Universitat Autònoma de Barcelona. Departament de Química) ; Shen, Xin-Jie (Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture (China)) ; Domene, Xavier (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Alcañiz, Josep M. (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Liao, Xing (Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture (China)) ; Palet i Ballús, Cristina (Universitat Autònoma de Barcelona. Departament de Química)