Phthalocyanine dyes (PCs) are colors that are resistant to bacterial decomposition. Phthalocyanine reactive dyes are metal complexes used to produce shades of blue and blue-green. Due to the presence of metals such as copper, Nickle, and cobalt, they are potentially mutagenic and of particular concern for toxicity. Phthalocyanine dyes are highly water-soluble, resist biological aerobic degradation and its inefficient removal by biomass in wastewater treatment systems, leads to the formation of colored effluents. These high-risk colored wastewaters need to be purified before being released in nature. In the present study, magnetic cobalt ferrite nanoparticles are synthesized in an alkaline media through a co-precipitation method of cobalt chloride and ferric chloride. The acquired Cobalt Ferrite nanocomposite was characterized by FT-IR, FE-SEM, EDX, and XRD analyses. The ability of cobalt ferrite nanoparticles (CFNs) for the adsorption of PC has been investigated. The effects of pH, adsorbent dosage, contact time and initial dye concentration on the PC removal percentage were investigated. Absorption isotherms can be used to calculate the absorption capacity at equilibrium state for each adsorbent; therefore, the Langmuir, and Freundlich models were applied to describe the adsorption of PC on to CoFe2O4. The adsorption isotherm experiments were conducted at the optimum adsorbent mass, optimum pH. Langmuir isotherm successfully describe the equilibrium behavior of Cobalt Phthalocyanine by nano-CoFe2O4 adsorbent. To investigate the adsorption of Cobalt Phthalocyanine on the CoFe2O4 surface various kinetic models have been proposed to examine the controlling mechanism of adsorption process. In this study, the adsorption kinetics of dye onto CoFe2O4 was examined by two models of pseudo-first-order, and pseudo-second-order, at the optimum condition. The data did not fit well to the first-order equation in the entire region of Cobalt Phthalocyanine concentration used in th
