Adsorptive removal of atmospheric pollutants over Pyropia tenera chars
| Autor: | Young-Kwon, Kyung-Seun Yoo, Rae-su Park, Jong-Ki Jeon, Sunghoon Park, Yeojin Hong, Hyung Won Lee, Heejin Lee, Sang-Chul Jung, Yejin Lee |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Formaldehyde
Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 01 natural sciences Inorganic Chemistry Ammonia chemistry.chemical_compound Adsorption parasitic diseases Biochar Materials Chemistry medicine Organic chemistry Char biology Renewable Energy Sustainability and the Environment Process Chemistry and Technology Organic Chemistry 021001 nanoscience & nanotechnology biology.organism_classification 0104 chemical sciences chemistry Environmental chemistry Ceramics and Composites Pyropia tenera 0210 nano-technology Pyrolysis Activated carbon medicine.drug |
| Zdroj: | Carbon letters. 19:79-88 |
| ISSN: | 1976-4251 |
| DOI: | 10.5714/cl.2016.19.079 |
| Popis: | As a replacement for activated carbon, biochar was synthesized and used for the adsorptive removal of formaldehyde and nitrogen oxide. Biochar was produced from the fast pyrolysis of the red marine macro alga, Pyropia tenera. The P. tenera char was then activated with steam, ammonia and KOH to alter its characteristics. The adsorption of formaldehyde, which is one of the main indoor air pollutants, onto the seaweed char was performed using 1-ppm formaldehyde and the char was activated using a range of methods. The char activated with both the KOH and ammonia treatments showed the highest adsorptive removal efficiency, followed by KOH-treated char, ammonia-treated char, steam-treated char, and non-activated char. The removal of 1000-ppm NO over untreated char, KOH-treated char, and activated carbon was also tested. While the untreated char exhibited little activity, the KOH-treated char removed 80% of the NO at 50°C, which was an even higher NO removal efficiency than that achieved by activated carbon. |
| Databáze: | OpenAIRE |
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