INTERNATIONAL CONGRESS ON BIOLOGICAL AND HEALTH SCIENCES, Afyonkarahisar, Turkey, 26 - 28 February 2021, pp.91
The spread of toxic effects in wastewater in various industries has detrimental effects on water resources, soil fertility, aquatic organisms and ecosystem integrity. One of the biggest problems in the textile industry is the discharge of colored substances. There are many organic and inorganic pollutants that need to be eliminated in the wastewater of industries. Various color and dye wastes in industrial wastewater and dye content in textile wastewater disrupt the aesthetic appearance. Also dyes can emit toxic and carcinogenic metabolites under anaerobic conditions. Dyes can be treated by physical and chemical methods to prevent pollution in the aquatic environment. However, cost of these methods is extremely high. Sludge can be produced in some of these methods. In order to eliminate the color of the wastewater is a need for alternative methods. Adsorption is the most common methods for the removal of dyes from wastewater. In addition to it is well known process to treatment pollutants from aqueous media. Researchers have recently opted for more economical and environmentally friendly adsorbents. As an example to these; Tea residues, sawdust, oily coffee beans, tree ferns, chitosan, olive oil waste, orange juice residues, orange peels, algae, dried plants and olive stone residues, plant seeds can be given. In this study; it is aimed to remove the methyl orange dye from the waste water by grinding the seeds of coriander (Coriandrumsativum L.) and using it as an adsorbent. The effects of contact time, pH, temperature and initial concentration of methyl orange on adsorption were investigated by batch method and optimum conditions (45 minutes, pH:6, 50 C and 50 mg/L, respectively) were determined. Langmuir, Freundlich, Temkin, Dubinin-Radushkevich adsorption isotherm models and Pseudo first order kinetic model, Pseudo second order kinetic model, the suitability of intra-particle diffusion model adsorption process was investigated. The adsorbent process was found to be suitable for the Langmuir isotherm model and the Pseudo second order kinetic model. As a result of the adsorption process, qmax value was found as 28.86 mg/g; Coriander seed particles have been identified as a cheap, convenient and effective natural adsorbent to extract methyl orange from wastewater.