title: Adsorption Characteristics of Pb(2+) onto Wine Lees-Derived Biochar.
abstract: Biochar has great advantages in soil amendment and polluted soil remediation. Herein, the pore and adsorption properties of wine lees-derived biochar were explored. Specifically, the adsorption isotherm and kinetics of Pb(2+) onto wine lees-derived biochar were examined. Experimental results revealed that wine lees-derived biochar featured large specific surface area and total pore volume, and high contents of -COOH and -OH on its surface. Adsorption of Pb(2+) onto wine lees-derived biochar proceeded via a multilayer adsorption mechanism, as described by the Freundlich adsorption model. Adsorption kinetics followed the Lagergren pseudo-second-order kinetics model; adsorption equilibrium was achieved within 30-60 min. Furthermore, the effect of solution pH on the adsorption of Pb(2+) was investigated. Within the studied pH range of 3-6, the adsorption capacity increased with increasing pH. Under established optimized conditions, wine lees-derived biochar achieved a Pb(2+) adsorption capacity of 79.12 mg/g.
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu, 611130, China. zhuqh05@163.com.|Chongqing Key Laboratory of Environmental Materials and Remediation Technologies, Chongqing, 402160, China. zhuqh05@163.com.
authors.forename: Qihong
authors.initials: Q
authors.lastname: Zhu
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu, 611130, China. 287670325@qq.com.
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu, 611130, China.
authors.forename: Lilin
authors.initials: L
authors.lastname: Wang
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu, 611130, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Yang
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu, 611130, China.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods; D007220:Industrial Waste / Q000032:analysis*; D007700:Kinetics; D007854:Lead / Q000032:analysis / Q000737:chemistry*; D008956:Models, Chemical; D012987:Soil; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry*; D014920:Wine
chemical_list: D007220:Industrial Waste; D012987:Soil; D012989:Soil Pollutants; C540010:biochar; D002606:Charcoal; D007854:Lead
keywords: Adsorption; Biochar; Kinetics; Pb2+