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Biochar removes volatile organic compounds generated from asphalt
- Source :
- Science of The Total Environment. 745:141096
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Volatile organic compounds (VOCs) emission not only cause the environmental pollution, but also severely threaten human health as they are known to be toxic and carcinogenic. This study investigates the effects of biochar on removing the VOCs emission from asphalt. The biochar was obtained from the pyrolyzed productions of pig manure, waste wood and straw biomasses. Molecular model for the adsorption of the VOCs was developed and used to measure the adsorption energy and heat. The VOCs removal model was built and used to determine the VOCs removal mechanism in the asphalt. The results showed that biochar could remove alkanes, polycyclic aromatic hydrocarbons (PAHs) and sulphide compounds because of its intrinsic carbon negativity and porosity. Furthermore, source of the biochar was an influential factor on the adsorption of the VOCs compounds. Based on the results, waste wood-based biochar had the best adsorption performance which could be related to the amorphous carbon, graphite and its porous structure. Also, it shows that biochar has the great potential to be used as VOCs inhibitors.
- Subjects :
- Volatile Organic Compounds
Environmental Engineering
010504 meteorology & atmospheric sciences
Swine
chemistry.chemical_element
Environmental pollution
010501 environmental sciences
Straw
01 natural sciences
Pollution
Manure
Hydrocarbons
Adsorption
chemistry
Charcoal
Environmental chemistry
Biochar
Animals
Environmental Chemistry
Porosity
Waste Management and Disposal
Carbon
Pyrolysis
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 00489697
- Volume :
- 745
- Database :
- OpenAIRE
- Journal :
- Science of The Total Environment
- Accession number :
- edsair.doi.dedup.....10ffc0fa5a4ea6a0dcd6ab9ea4559816