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 PO4/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(PO4)(2)center dot 8H(2)O and MgHPO4 center dot 1.2H(2)O nanocrystals on the surface of the adsorbent. 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 highefficiency adsorbent to mitigate eutrophication.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Beijing Institute of Technology (China); National Development Center of High Technology Green Materials, Beijing (China)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC)
- Grant/Contract Number:
- AC02-06CH11357; 2015CB251100
- OSTI ID:
- 1328553
- Alternate ID(s):
- OSTI ID: 1329025; OSTI ID: 1360820; OSTI ID: 1529955
- Journal Information:
- ACS Omega, Journal Name: ACS Omega Vol. 1 Journal Issue: 3; ISSN 2470-1343
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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