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Title: Synthesis of Mg-Decorated Carbon Nanocomposites from MesoCarbon MicroBeads (MCMB) Graphite: Application for Wastewater Treatment

The potential application of a carbon nanocomposite from battery anode materials modified with magnesium (Mg) was explored to remove phosphate from aqueous solutions. Thermogravimetric analysis (TGA) shows that the Mg content of the prepared Mg/C composite is around 23.5%. Laboratory batch adsorption kinetics and equilibrium isotherm experiments demonstrate that the composite has an extremely high phosphate adsorption capacity of 406.3 mg PO 4/g, which is among the highest phosphate removal abilities reported so far. Results from XRD, SEM-EDX, and XPS analyses of the postsorption Mg/C composite indicate that phosphate adsorption is mainly controlled by the precipitation of P to form Mg 3(PO 4) 2·8H 2O and MgHPO 4·1.2H 2O nanocrystals on the surface of the adsorbent. Finally, the approach of synthesizing Mg-enriched carbon-based adsorbent described in this work provides new opportunities for disposing spent batteries and developing a low-cost and high-efficiency adsorbent to mitigate eutrophication.
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2]
  1. Beijing Inst. of Technology (China). School of Materials Science and Engineering; National Development Center of High Technology Green Materials, Beijing (China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
Publication Date:
OSTI Identifier:
Grant/Contract Number:
AC02-06CH11357; 2015CB251100
Published Article
Journal Name:
ACS Omega
Additional Journal Information:
Journal Volume: 1; Journal Issue: 3; Journal ID: ISSN 2470-1343
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States); Beijing Inst. of Technology (China); National Development Center of High Technology Green Materials, Beijing (China)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NNSFC)
Country of Publication:
United States
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; Li-ion battery; adsorption; anode; carbon; nanocomposite; phosphate