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A trifunctional polysaccharide structure based on a biodegradable matrix, Chitosan/Alginate-PolyEthylene-Imine-Phenyl-Phosphonamidic Acid (CHIT/ALG-PEIPPAA) was synthesis via a condensation reaction, using glutaraldehyde as cross linking agent. The aim of this research work is to investigate the chlorophenols adsorption in the batch process from an aqueous medium. The influence of several parameters like pH, time reaction, initial concentration, and ionic strength was followed carefully in this study. Scanning electron microscopy (SEM) micrographs show a heterogeneous morphology with different particle sizes of agglomerates around a few micrometers, and irregular particles shape. The FTIR spectrum and Zeta potential characterization confirms the presence of several hydrophilic groups and a high positive charge around 31.4 mV for CHIT/ALG-PEIPPAA surface adsorbent. The optimum pH solution for chlorophenols removal was reached at an initial pH of around 4.4. The maximal adsorption capacity was found to be 118 mg.g− 1, and 249 mg.g− 1 under optimum conditions for 4-chlorophenols and 2–4 chlorophenols respectively. The kinetic modeling followed the pseudo-second-order rate expression for both chlorophenols molecules. Thermodynamics data leads to an exothermic and spontaneous adsorption process (∆H = − 6.98KJ.mol− 1; ∆H = − 2.74KJ.mol− 1), respectively for 4-chlorophenols and 2–4 chlorophenols. The regeneration process of CHIT/ALG-PEIPPAA is more favorable in the presence of hydrochloride acid (2.0 mol.L− 1), up to 78%, and 91% of desorption yield for 4-chlorophenols and 2–4 chlorophenols, respectively.

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Economic, social and political transformations have a manifest effect on the relationships that the various actors have with steppe resources. Highlighting the multiplicity of actors explains the development of conflicts over the use of this resource. The present work aims, on the one hand, to shed light on the problem of conflicts in the Brezina area, in particular the identification of conflicts and the analysis of the various socio-economic issues of these conflicts. And on the other hand, to study the different mechanisms contributing to the management and neutralization of these conflicts, and consequently, to ensuring sustainable local development of this territory. The results of joint classification obtained in our groups of surveys presenting similar declarations to carry out classes of authorized variables. The suitability of the variables in these measurement classes seems to reveal the same capabilities of representations. In the most important variances attains 100%. that of these key variables, to maintain good relations with local authorities (Mbr1), and the impact of the presence of nomads in the territories (Pnt), and more than 90% for an essential role of controlling farmers and breeders (Rec), They are effective in conflict management (Egc), these aspects reveal the strategy of these breeders in the management of resources in the territory. The index of the alpha value of the determined cronbach, shows satisfactory results around 0.887%.It should be noted that conflict resolution is closely linked to cultural specificities, community structures and the mode of communication between users. This resolution currently remains difficult and ambiguous because of the presence of several actors ; users of steppe areas, and of a multi-institutional system.