However, surfactant adsorption may decrease at high temperature conditions for highly soluble surfactants, and, on the other hand, poor solubility may lead to high adsorption values.
Another advantage of 13X (with/without CNT) is an asymptotic trend of CO2 adsorption values against the pressure, indicating that high adsorption values could be obtained at low pressure, such as a partial pressure of CO2 in a flue gas (between 10 and 20%).
Among them, 50PEI/DHMS showed the highest adsorption value.
The highest adsorption values (99.9%) were observed from pH 5 to 7, after 30 min at 37 °C.
A systematic shift to higher adsorption values, due to increasing specific hydrogen bonding interactions between the alcohol –OH groups and surface oxygen, is observed in all of the alcohol isotherms as the total oxygen content of the carbon surfaces ([O]T/at.%) increases.
The results showed that activated carbons prepared by chemical activation method had a high yield as well as high iodine adsorption value.
Adsorption experiments conducted with 100 ppm dye solutions at different solution temperatures ranging from ambient temperature 24 to 70 °C clearly indicate that each dye is preferentially accumulated on the surface of breadfruit particles, leading to high adsorption equilibrium values.
The high adsorption enthalpy values ascribe to strong interactions between amine-functional groups in FC-POPs and CO2 molecules, for the presence of amines gives rise to chemical adsorption towards CO2.
13X shows the highest equilibrium adsorption values.
This is the higher adsorption capacity value obtained, which is compared with previously reports for Fe III) in various studies such as 7.00 [64], 18.30 [65], 28.69 [66], 28.90 [67], and 173.14 [68] mgg−1.
