The kinetics of sorption of divalent metal ions onto sphagnum moss peat

Metal biosorption onto dry biomass of Arthrospira (Spirulina) platensis and Chlorella vulgaris: Multi-metal systems

“…As previously suggested [13], the kinetic study of dual metal systems was made by comparing the theoretical sorption capacities (q c ) and pseudo second order rate constants (k 2 ) calculated by the pseudo second order model of Ho and McKay [24], whose values (Table 3) were in excellent agreement with the experimental ones (Tables 1 and 2), and the same applies also to the other binary systems.…”

“…The integrated and rearranged pseudo second order rate expression of Ho and McKay [24], based on solid adsorption capacity, was used to analyze sorption kinetics:…”

“…The adsorption results were evaluated in terms of equilibrium sorption capacity and metal removal efficiency, and modeled by the pseudo second order kinetic model of Ho and McKay [24]. An adsorption isotherm study was also performed, in which adsorption data were processed by the multi-component Langmuir and Freundlich models.…”

Adsorption of metal ions on lignin

“…A pseudosecond-order kinetic model [33,34] was used to fit the adsorption kinetic data using the equation…”

“…2) with the correlation coefficients (r 2 ) of being over 0.9997. Successful fitting of the data with the second-order kinetic model suggests that chemisorption was the rate-controlling step [33,34]. Kinetic constants, including v 0 , k, and q e were calculated from the slopes and intercepts of the plots and are presented in Table 1.…”