The absolute majority of modern studies dealing with the interpretation of experimental data on the basis of the Freundlich isotherm ignore the fact that the data obtained for regions of low and moderate adsorbate concentration/pressure can be analytically continued within the Freundlich adsorption model to the adsorptive saturation area with coverages tending to 100%. Needless to say, this would give valuable extended information about the corresponding adsorption process. This message proposes a framework to comprehensively analyse experimental data first recognised as complying with the Freundlich adsorption model. An algorithm-driven method is presented which enables one to translate the data obtained in the area of small and moderate the coverages of the area of adsorptive saturation regime. As examples, three sets of experimental data for adsorption of mercury (II) on N-rich porous organic polymers and of protein on carrier nano-Mg(OH)2 have been processed and presented according to the framework developed.

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The protective efficiency of a formulation based on low erucic colza oil against carbon steel corrosion in salt solution (0.5 M NaCl), in a thermal moisture chamber and under natural conditions has been studied. The following formulations have been used: (1) colza oil (CO) without inhibiting additives; (2) CO with addition (1-10 wt.%) of synthetic fat acids bottoms (SFAB); and (3) CO with the IFHAN-29A anticorrosion additive (20 wt.%). Corrosion tests and electrochemical measurements have been conducted. Protective CO coatings are not efficient in the presence of chloride ions but provide a high protective efficiency under natural conditions.

Protective efficiency of the composition on the base of low erucic colza oil has been studied against the carbon steel corrosion in the salt solution (3 % NaCl), thermo-moisture chamber and the natural conditions. The following compositions have been used:1. Colza oil (CO) and its components without the inhibiting additives; 2. CO with the synthetic fat acids bottoms (SFAB) additive (1-10 wt.%); 3. CO with the anticorrosion additive IFHAN 29-A (20 wt.%); 4. CO with zinc micro powder filler (50 wt.%); 5. CO with Zn micro powder (50 wt.%) and micro graphite (≤ 1 wt.%); 6. CO with Zn micro powder (50 wt.%) and multiwalled carbon nano tubes (≤ 1 wt.%). The corrosion tests, electrochemical measurements have been conducted. Moisture absorption by the investigated compositions, their adhesion and cohesion with respect to steel surface were estimated.Protective coatings of CO and its components are not effective in the presence of the chloride ions, but provide the 90 % protective efficiency in natural conditions. The compositions with SFAB and IFHAN 29-A show the protective effect equal to 40-50 % in chloride media and 99 % in a thermo-moisture chamber and natural conditions. The presence of Zn powder in the compositions allows to reach a high protective effect (up to 99 %) irrespective of the nature of the solvent-support (colza oil or its components). Addition of the multiwalled carbon nano tubes decreases the protective effect of the compositions.

Approximate analytical solutions for the overall adsorption functions based on the Fowler-Guggenheim local isotherm with a patchwise topology of adsorption centres location and four different adsorption heat distribution functions have been obtained. The Gaussian, constant, linear (as a particular case of power distribution), and exponential distribution functions have been applied. Overall adsorption functions have been analytically obtained, studied and commented. The Gaussian-related adsorption function reproduces the classic computational result nearly perfectly.