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Efficient performance of magnesium oxide loaded biochar for the significant removal of Pb2+ and Cd2+ from aqueous solution.
Ecotoxicol Environ Saf. 2021 Sep 15; 221:112426.EE

Abstract

Lead (Pb) and cadmium (Cd) are considered as a typical heavy metals in aqueous solution, which may pose adverse health effects on human beings. For the removal of these two pollutants, magnesium oxide (MgO) was successfully immobilized onto eucalyptus biochar (BC) matrix via simple and cost-effective pyrolysis process of MgCl2-pretreated eucalyptus biomass under high temperature (500 °C). Synthesized MgO nanoparticles-biochar composites (MBC) exhibited superior removal performance for target pollutants, and achieve 99.9% removal efficiency for Pb(II) and Cd(II) at optimum conditions (0.02 g, pH in range of 4-7, and reaction time 120, 240 min). Furthermore, the maximum theoretical adsorbing amount of MBC was 829.11 mg/g for Pb(II) and 515.17 mg/g for Cd(II). Pseudo-second-order model and Langmuir models were well-determined for isotherm and adsorption kinetics. FTIR, XRD, and XPS analysis revealed that precipitation and ion exchange was of great importance for the removal of contaminants. Besides, cation-π interaction and complexation from the carbon-containing functional groups should not be neglected. Considering the advantage of low-cost, facile preparation, and brilliant adsorption capacity, it is anticipated that MBC has a promising prospect for the broad application in Pb(II)/Cd(II)-containing wastewater treatment.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Shi Q
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China.
Zhang H
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst, Area, Guilin University of Technology, Guilin 541004, China. Electronic address: zhanghua5127@163.com.
Shahab A
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China. Electronic address: 2017022@glut.edu.cn.
Zeng H
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China.
Zeng H
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China.
Bacha AU
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China.
Nabi I
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China.
Siddique J
Department of the Earth Sciences, Quaid I Azam University, Islamabad 45320, Pakistan.
Ullah H
Department of Environmental Science, Zhejiang University, Hangzhou 310058, China.

MeSH

AdsorptionCadmiumCharcoalEucalyptusLeadMagnesium OxideSolutionsWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34166940

Citation

Shi, Qingliang, et al. "Efficient Performance of Magnesium Oxide Loaded Biochar for the Significant Removal of Pb2+ and Cd2+ From Aqueous Solution." Ecotoxicology and Environmental Safety, vol. 221, 2021, p. 112426.
Shi Q, Zhang H, Shahab A, et al. Efficient performance of magnesium oxide loaded biochar for the significant removal of Pb2+ and Cd2+ from aqueous solution. Ecotoxicol Environ Saf. 2021;221:112426.
Shi, Q., Zhang, H., Shahab, A., Zeng, H., Zeng, H., Bacha, A. U., Nabi, I., Siddique, J., & Ullah, H. (2021). Efficient performance of magnesium oxide loaded biochar for the significant removal of Pb2+ and Cd2+ from aqueous solution. Ecotoxicology and Environmental Safety, 221, 112426. https://doi.org/10.1016/j.ecoenv.2021.112426
Shi Q, et al. Efficient Performance of Magnesium Oxide Loaded Biochar for the Significant Removal of Pb2+ and Cd2+ From Aqueous Solution. Ecotoxicol Environ Saf. 2021 Sep 15;221:112426. PubMed PMID: 34166940.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Efficient performance of magnesium oxide loaded biochar for the significant removal of Pb2+ and Cd2+ from aqueous solution. AU - Shi,Qingliang, AU - Zhang,Hua, AU - Shahab,Asfandyar, AU - Zeng,Honghu, AU - Zeng,Huiting, AU - Bacha,Aziz-Ur-Rahim, AU - Nabi,Iqra, AU - Siddique,Jamil, AU - Ullah,Habib, Y1 - 2021/06/21/ PY - 2021/02/10/received PY - 2021/05/22/revised PY - 2021/06/12/accepted PY - 2021/6/25/pubmed PY - 2021/7/13/medline PY - 2021/6/24/entrez KW - Adsorption KW - Biochar KW - Cd(II) KW - Eucalyptus KW - MgO KW - Pb(II) SP - 112426 EP - 112426 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 221 N2 - Lead (Pb) and cadmium (Cd) are considered as a typical heavy metals in aqueous solution, which may pose adverse health effects on human beings. For the removal of these two pollutants, magnesium oxide (MgO) was successfully immobilized onto eucalyptus biochar (BC) matrix via simple and cost-effective pyrolysis process of MgCl2-pretreated eucalyptus biomass under high temperature (500 °C). Synthesized MgO nanoparticles-biochar composites (MBC) exhibited superior removal performance for target pollutants, and achieve 99.9% removal efficiency for Pb(II) and Cd(II) at optimum conditions (0.02 g, pH in range of 4-7, and reaction time 120, 240 min). Furthermore, the maximum theoretical adsorbing amount of MBC was 829.11 mg/g for Pb(II) and 515.17 mg/g for Cd(II). Pseudo-second-order model and Langmuir models were well-determined for isotherm and adsorption kinetics. FTIR, XRD, and XPS analysis revealed that precipitation and ion exchange was of great importance for the removal of contaminants. Besides, cation-π interaction and complexation from the carbon-containing functional groups should not be neglected. Considering the advantage of low-cost, facile preparation, and brilliant adsorption capacity, it is anticipated that MBC has a promising prospect for the broad application in Pb(II)/Cd(II)-containing wastewater treatment. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/34166940/Efficient_performance_of_magnesium_oxide_loaded_biochar_for_the_significant_removal_of_Pb2+_and_Cd2+_from_aqueous_solution_ DB - PRIME DP - Unbound Medicine ER -