The adsorption of dyestuffs from aqueous solutions using the activated carbon adsorption model to determine breakthrough curves

Role of pH in Metal Adsorption from Aqueous Solutions Containing Chelating Agents on Chitosan

“…32 The third, linear portion is the final equilibrium stage where the intraparticle diffusion starts to slow because of extremely low solute concentration in the solution. 33 This behavior was also due to diffusion in pores with different sizes. 19,21 As shown in Figure 8, the instantaneous adsorption in the first stage is not so apparent.…”

“…The second, gradually linear portion is the gradual adsorption stage, where the intraparticle diffusion is the controlling factor of the adsorption process . The third, linear portion is the final equilibrium stage where the intraparticle diffusion starts to slow because of extremely low solute concentration in the solution . This behavior was also due to diffusion in pores with different sizes. , …”

Role of pH in Metal Adsorption from Aqueous Solutions Containing Chelating Agents on Chitosan

“…32 The third, linear portion is the final equilibrium stage where the intraparticle diffusion starts to slow because of extremely low solute concentration in the solution. 33 This behavior was also due to diffusion in pores with different sizes. 19,21 As shown in Figure 8, the instantaneous adsorption in the first stage is not so apparent.…”

“…The second, gradually linear portion is the gradual adsorption stage, where the intraparticle diffusion is the controlling factor of the adsorption process . The third, linear portion is the final equilibrium stage where the intraparticle diffusion starts to slow because of extremely low solute concentration in the solution . This behavior was also due to diffusion in pores with different sizes. , …”

Chitin/Graphene Oxide Composite Materials for Heavy-Metal-Ion Adsorption

“…The surfaces of the GO sheets reportedly promote efficient adsorption. − In the CGO composite ( Figure E,F), both morphological features are observed. The composite surface exhibits smooth, sheet-like regions attributable to GO, as well as rougher, fibrous regions corresponding to chitin.…”

Functionalized Activated Carbon Derived from Palm Kernel Shells for the Treatment of Simulated Heavy Metal-Contaminated Water

“…The equation for parabolic diffusion is written as follows:1 − (M t /M o )/t = Kt −0.5 + b where the adsorption at time 0 and at time t is represented by M o and M t , respectively, in the above equations [4,41,42]. Table 2 contains the detailed parameters of all three kinetic adsorption models.…”

Role of pH in Metal Adsorption from Aqueous Solutions Containing Chelating Agents on Chitosan

“…32 The third, linear portion is the final equilibrium stage where the intraparticle diffusion starts to slow because of extremely low solute concentration in the solution. 33 This behavior was also due to diffusion in pores with different sizes. 19,21 As shown in Figure 8, the instantaneous adsorption in the first stage is not so apparent.…”

“…The second, gradually linear portion is the gradual adsorption stage, where the intraparticle diffusion is the controlling factor of the adsorption process . The third, linear portion is the final equilibrium stage where the intraparticle diffusion starts to slow because of extremely low solute concentration in the solution . This behavior was also due to diffusion in pores with different sizes. , …”

Chitin/Graphene Oxide Composite Materials for Heavy-Metal-Ion Adsorption

“…The surfaces of the GO sheets reportedly promote efficient adsorption. − In the CGO composite ( Figure E,F), both morphological features are observed. The composite surface exhibits smooth, sheet-like regions attributable to GO, as well as rougher, fibrous regions corresponding to chitin.…”

Functionalized Activated Carbon Derived from Palm Kernel Shells for the Treatment of Simulated Heavy Metal-Contaminated Water

“…The equation for parabolic diffusion is written as follows:1 − (M t /M o )/t = Kt −0.5 + b where the adsorption at time 0 and at time t is represented by M o and M t , respectively, in the above equations [4,41,42]. Table 2 contains the detailed parameters of all three kinetic adsorption models.…”

Role of pH in Metal Adsorption from Aqueous Solutions Containing Chelating Agents on Chitosan

“…32 The third, linear portion is the final equilibrium stage where the intraparticle diffusion starts to slow because of extremely low solute concentration in the solution. 33 This behavior was also due to diffusion in pores with different sizes. 19,21 As shown in Figure 8, the instantaneous adsorption in the first stage is not so apparent.…”

“…The second, gradually linear portion is the gradual adsorption stage, where the intraparticle diffusion is the controlling factor of the adsorption process . The third, linear portion is the final equilibrium stage where the intraparticle diffusion starts to slow because of extremely low solute concentration in the solution . This behavior was also due to diffusion in pores with different sizes. , …”

Chitin/Graphene Oxide Composite Materials for Heavy-Metal-Ion Adsorption

“…The surfaces of the GO sheets reportedly promote efficient adsorption. − In the CGO composite ( Figure E,F), both morphological features are observed. The composite surface exhibits smooth, sheet-like regions attributable to GO, as well as rougher, fibrous regions corresponding to chitin.…”

Functionalized Activated Carbon Derived from Palm Kernel Shells for the Treatment of Simulated Heavy Metal-Contaminated Water

“…The equation for parabolic diffusion is written as follows:1 − (M t /M o )/t = Kt −0.5 + b where the adsorption at time 0 and at time t is represented by M o and M t , respectively, in the above equations [4,41,42]. Table 2 contains the detailed parameters of all three kinetic adsorption models.…”