Enhancement of CO < sub > 2 < /sub > adsorption on activated carbons produced from avocado seeds by combined solvothermal carbonization and thermal KOH activation

Environ Sci Pollut Res Int. 2023 Jul 13. doi: 10.1007/s11356-023-28638-y. Online ahead of print.ABSTRACTA new strategy for ultramicroporous activated carbons production from avocado seeds was developed. Combined solvothermal carbonization and thermal KOH activation were conducted. Solvothermal carbonizations were performed in a stainless-steel autoclave lined with Teflon at the temperature of 180 °C for 12 h in three different liquids (water, methanol, isopropyl alcohol). Chars were activated by KOH. The carbonization combined with activation took place in the oven at 850 °C for 1 h. All the samples were very good CO2 sorbents. The highest CO2 adsorption at a pressure of 1 bar was achieved for activated carbon produced using isopropanol. The best carbon dioxide adsorption was equal to 6.47 mmol/g at 0 °C and 4.35 mmol/g at 20 °C.PMID:37442926 | DOI:10.1007/s11356-023-28638-y
Source: Environmental Science and Pollution Research International - Category: Environmental Health Authors: Source Type: research