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High-Performance Magnetic Activated Carbon from Solid Waste from Lignin Conversion Processes. 1. Their Use As Adsorbents for CO2
- Source :
- ACS Sustainable Chemistry & Engineering. 5:3087-3095
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- Lignin is naturally abundant and a renewable precursor with the potential to be used in the production of both chemicals and materials. As many lignin conversion processes suffer from a significant production of solid wastes in the form of hydrochars, this study focused on transforming hydrochars into magnetic activated carbons (MAC). The hydrochars were produced via hydrothermal treatment of lignins together with formic acid. The activation of the hydrochars was performed chemically with KOH with a focus on the optimization of the MACs as adsorbents for CO2. MACs are potentially relevant to carbon capture and storage (CCS) and gas purification processes. In general, the MACs had high specific surface areas (up to 2875 m2/g), high specific pore volumes, and CO2 adsorption capacities of up to 6.0 mmol/g (1 atm, 0 °C). The textual properties of the MACs depended on the temperature of the activation. MACs activated at a temperature of 700 °C had very high ultramicropore volumes, which are relevant for potent...
- Subjects :
- Solid-state chemistry
Municipal solid waste
Renewable Energy, Sustainability and the Environment
Formic acid
General Chemical Engineering
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
chemistry.chemical_compound
Adsorption
chemistry
Desorption
medicine
Carbon capture and storage
Environmental Chemistry
Lignin
Organic chemistry
0210 nano-technology
Activated carbon
medicine.drug
Subjects
Details
- ISSN :
- 21680485
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- ACS Sustainable Chemistry & Engineering
- Accession number :
- edsair.doi...........df62b9401824c2471936e75db9b154fa
- Full Text :
- https://doi.org/10.1021/acssuschemeng.6b02795