“…Liu et al [53] obtained a higher correlation coefficient using the Langmuir model for modelling the sorption isotherms of Cr(VI) sorption by poly(N 1 ,N 1 ,N 3 ,N 3 -tetraallylpropane-1,3-diaminium chloride) (PTAPDAC). A better performance of the Langmuir model was confirmed by Anandaraj et al [54] using native and chemically modified green macroalgae Codium tomentosum biomass as a sorbent. Similar results were obtained by Mikhaylov et al [8] using Al/Fe oxyhydroxide composite powders, Sutkowy and Klosowsky [55] using the green alga Pseudopediastrum boryanum and many other authors using minerals [40,56], synthetized materials [1,7,10,20,57,58] or biosorbents [26,27,48,59].…”