title: Sorption of lead by Salisbury biochar produced from British broadleaf hardwood.
abstract: In this study, the physicochemical properties of Salisbury biochar produced from British broadleaf hardwood and its adsorption characteristics towards lead were investigated. The biochar particle size has a significant effect on its BET surface area, cation exchange capacity and sorption of lead. The kinetics data were well fitted by the Pseudo second order model. The increase of biochar dosage increased the percentage of lead removal in solutions. The increase of initial solution pH increased the percentage of lead removal across the pH range of 2-10. The calculated maximum adsorption capacities of lead by Langmuir model were 47.66 and 30.04 mg/g for 0.15 mm and 2 mm samples. The adsorption capacities of different metals decreased in the order of lead > nickel > copper > zinc calculated in mmol/g. This study suggests a great potential of biochars derived from British broadleaf hardwood to be applied in soil remediation.
authors.affiliation: Geotechnical and Environmental Research Group, Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom. Electronic address: zs281@cam.ac.uk.
authors.forename: Zhengtao
authors.initials: Z
authors.lastname: Shen
authors.affiliation: Geotechnical and Environmental Research Group, Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom.
authors.forename: Fei
authors.initials: F
authors.lastname: Jin
authors.affiliation: Geotechnical and Environmental Research Group, Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom.
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
authors.affiliation: Geotechnical and Environmental Research Group, Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom.
authors.forename: Oliver
authors.initials: O
authors.lastname: McMillan
authors.affiliation: Geotechnical and Environmental Research Group, Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom.
authors.forename: Abir
authors.initials: A
authors.lastname: Al-Tabbaa
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D003300:Copper / Q000302:isolation & purification; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007854:Lead / Q000302:isolation & purification*; D009532:Nickel / Q000302:isolation & purification; D010316:Particle Size; D012996:Solutions; D013997:Time Factors; D006113:United Kingdom; D014934:Wood / Q000737:chemistry*; D015032:Zinc / Q000302:isolation & purification
chemical_list: D012996:Solutions; C540010:biochar; D002606:Charcoal; D007854:Lead; D003300:Copper; D009532:Nickel; D015032:Zinc
keywords: Adsorption; British hardwood; Heavy metals; Lead; Salisbury biochar