Tion model, which the pseudosecondary model, which indicates that chemical be explained was additional dominant.

Tion model, which the pseudosecondary model, which indicates that chemical be explained was additional dominant. fixation mechanism of Cs in alkaliactivated fly ashmechanism of Cs by the fact that the This can be explained by the fact that the fixation is controlled by the in cation exchange fly ash is controlled by the cation exchange mechanism [42]. alkaliactivated mechanism [42]. 0 1 two ln(qeqt) three four five six 0 2 4 t(h)Figure 6. Bromoxynil octanoate Epigenetics Pseudofirstorder linear BMS-901715 Epigenetics kinetic model of Cs adsorption on the fly ashbased geomaterials Figure slagbased geomaterials. kinetic model of Cs adsorption around the fly ashbased geomaterials and 6. Pseudofirstorder linear and slagbased geomaterials.y = 0.0362x three.974 R= 0.6936 y = 0.1812x three.4566 R= 0.9994 six 8Fly ash SlagAppl. Sci.Sci. 2021, 11, 8407 Appl. 2021, 11, x FOR PEER REVIEW13 of 18 17 12 of450 400 350 300 t/qt 250 200 150 one hundred 50 0 0 5 ten 15 t(h)Figure 7. Pseudosecondorder linear kinetic model of Cs adsorption on the fly ashbased geomateriFigureand slagbased geomaterials. als 7. Pseudosecondorder linear kinetic model of Cs adsorption around the fly ashbased geomaterials and slagbased geomaterials. Table three. Parameters for two kinetic models of Cs adsorption by fly ashbased geomaterials and Table three. Parameters for two kinetic models of Cs adsorption by fly ashbased geomaterials and slagbased geomaterials. slagbased geomaterials.y = 15.658x 19.769 R= 0.9989 Fly ash y = 11.652x ten.582 R= 0.9955 SlagSample Fly ash Slagqexp (mg/g) 83.68 60.PseudoFirstOrder PseudoSecondOrder PseudoFirstOrder PseudoSecondOrder qexp k1 qe k2 qe Sample qe qe k2 R2 k1 R two R2 R2 1 (mg 1) (mg/g)(h1)(mg 1 ) (g g1 (g)mg1 1 ) 1 ) (mg 1) 1 ) (h (mg 0.0362053.20 0.6936 12.83 Fly 53.20 83.68 ash 0.03620 85.82 0.6936 85.82 12.83 0.9955 0.9955 60.67 60.930.1812 60.67 0.9994 12.40 Slag 0.1812 31.71 0.9994 31.71 12.40 0.9989 0.9989 three.four. Adsorption Isotherm Study 3.four. Adsorption Isotherm Study The adsorption isotherm is is normally employed to reflect theperformance from the adsorbent inside the adsorption isotherm usually employed to reflect the efficiency from the adsorbent within the adsorption procedure. As a way to quantify the adsorption capacity of of your adsorbent for the adsorption approach. In an effort to quantify the adsorption capacity the adsorbent to take away Cs,Cs, Langmuir and Freundlich’s isotherms have been utilized this study. Beneath optimal remove Langmuir and Freundlich’s isotherms were utilized in in this study. Below optimal adsorption situations (pH of 8, contact time of 24 h, h, adsorbent dosage0.6 g), the adsorpadsorption circumstances (pH of eight, contact time of 24 adsorbent dosage of of 0.6 g), the adsorption isotherm model of Cs geopolymer was established in the initial concentrations tion isotherm model of Cs on the around the geopolymer was established at the initial concentrations of 5 ppm,ppm, 30 ppm, and 30 ppm. and 40 ppm. The outcomes of your of five ppm, ten ppm, 20 10 ppm, 20 ppm, 40 ppm, The outcomes on the adsorption information adsorption data investigated by the Langmuir and Freundlich in Figures eight and 9, respecinvestigated by the Langmuir and Freundlich models are shown models are shown in Figures eight and 9, respectively. like the correlation coefficient (R2 ), are provided in Table 4. tively. Other parameters, Other parameters, like the correlation coefficient (R2), areThe correlation coefficient shows that the Langmuir isotherm can describe the adsorption offered in Table four. The correlation coefficient shows that the Langmuir isotherm can describe far better than Freundlich’s isothe.