High-efficiency removal of Pb(II) and humate by a CeO2-MoS2 hybrid magnetic biochar

被引：161

作者：

Li, Ronghua ^{[1
]}

Deng, Hongxia ^{[2
]}

Zhang, Xiaofeng ^{[1
]}

Wang, Jim J. ^{[3
]}

Awasthi, Mukesh Kumar ^{[1
]}

Wang, Quan ^{[1
]}

Xiao, Ran ^{[1
,3
]}

Zhou, Baoyue ^{[3
]}

Du, Juan ^{[1
]}

Zhang, Zengqiang ^{[1
]}

机构：

[1] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China

[2] Northwest A&F Univ, Coll Chem & Pharm, Yangling 712100, Shaanxi, Peoples R China

[3] Louisiana State Univ, Agr Ctr, Sch Plant Environm & Soil Sci, 104 Sturgis Hall, Baton Rouge, LA 70803 USA

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 273卷

关键词：

Biochar; MoS2; Hybridization; Pb(II); Humate; Removal; REDUCED GRAPHENE OXIDE; MOLYBDENUM-DISULFIDE; PYROLYSIS TEMPERATURE; IMPREGNATED BIOCHAR; AQUEOUS-SOLUTION; ADSORPTION; NANOSHEETS; COMPOSITE; PHOSPHATE; WATER;

D O I：

10.1016/j.biortech.2018.10.053

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This work prepares a novel CeO2-MoS2 hybrid magnetic biochar (CMMB) for the adsorptive removal of Pb(II) and humate from aqueous solution. The CMMB was evaluated against magnetic biochar (MB). The results showed that CMMB exhibited strong magnetic separation ability. Hybridization of CMMB greatly improved Pb (II) and humate removal compared to MB, with > 99% Pb(II) and humate removed within 6 h. Pb(II) and humate removal capacities of CMMB were 263.6 mg/g and 218.0 mg/g, respectively, with negligible influence of ion strength in the range of 0-0.1 mol/L NaNO3. Pb(II) removal mechanism involved predominately with electrostatic attraction, C pi-Pb(II) bond interaction, and surface adsorption and complexation combined processes; while pore-filling, partition effect and pi-pi interaction contributed to the adsorption of humate. Overall, the introduction of graphene-like MoS2 materials into biochar benefits both of the biomass resources recovery and environmental protection.

引用

页码：335 / 340

页数：6

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