Elimination of Congored from Aqueous Solution by the using of gamma alumina nanoparticles

These days, the removal of various dyes from industrial wastewater has become an important concern. Synthetic dyes used in industries such as textiles are complex, toxic and mutant organic materials. Congored is also an acidic dye that is considered a high- risk source of contamination and threatens the lives of humans and other living organisms. Different methods, such as electrochemical, physical and biological processes, are used to remove organic pigment from aqueous samples. Adsorption is one of the most effective modern methods of industrial wastewater treatment, which is a relatively simple and inexpensive process that produces non- toxic and low- risk products. This research focuses gamma alumina nanoparticles was used for the adsorption of the cationic dye congored from aqueous solutions. Batch adsorption studies carried out to study various parameters included pH, gamma alumina nanoparticles dosage, temperature and contact time. The concentration of dye congored was measured using a UV-vis Spectrophotometer at the wavelength of 498 nm. The optimum adsorption conditions were found to be pH=6, adsorbent dose=0.04 g, temperature=298 K and contact time=40 min. The experimental results of this work were compared with Langmuir, Friendlich and Tamkin's isotherm models. The results obtained from isotherm models showed that the surface adsorption of these dye on the adsorbent used better follows the Langmuir isotherm model. Analysis of thermodynamic data showed that the adsorption process of the studied dye on the adsorbent surface is spontaneous and exothermic.