Relevant problems associated with treatment of industrial wastewater from heavy metal ions are considered. Due to industrial development, the amount of wastewater increases as well as the risks of heavy metals getting into surface and groundwater, accumulating in water bodies and becoming aggressive environmental pollutants, which affect the animal and human organisms. To assess the possibility of extracting metal ions (Cd2+, Zn2+, Co2+, Cu2+) from industrial wastewater and their further treatment, studies were carried out on redistribution of heavy metals in the “wastewater – waste” system using iron-magnesium production waste. Samples of the investigated waste weighing 0.1; 0.2; 0.5; 1; 1.5; 2 g were taken for wastewater volume of 50 ml per each subsample. Contact time varied from 5 to 180 min, waste fraction was 1 mm. The interaction process showed that the waste efficiently removes metal ions (Cd2+, Zn2+, Co2+, Cu2+) from industrial wastewater. The efficiency of removing a pollutant from the solution depends on the weight of the waste subsample, initial concentration of metal ions, and contact time.
Research objective is to assess the possibility of removing copper ions from industrial wastewater using waste from iron and magnesium production. Methods of research. An experiment was conducted to remove copper ions from a solution of industrial wastewater using waste from iron and magnesium production. Data were obtained showing changes in the ion content of the studied metals in wastewater solutions. Theoretical research was carried out to analyze the effectiveness of existing wastewater treatment methods in order to study and generalize the results. The initial concentration of metal ions in solutions was measured with a Varian AA 240 FS atomic absorption spectrophotometer with a deuterium lamp for background correction and flame spraying. Temperature and pH were measured with a Hanna HI 99121 portable pH meter. Mineralization of solid samples was carried out with a MARS 5 Digestion Microwave System in Easy Prep vessels with the addition of nitric and hydrofluoric acids. Results. The results of the research on the removal of copper ions from industrial waste water using iron-magnesium production waste show that the samples under investigation were effective in absorbing copper from aqueous solutions. It was found that the amount of copper in the filtrates varies depending on the tested sorbent sample weight. There is an increase in the indicator of the degree of pollutant extraction from solutions from 52.02 to 99.04% for group 1 and from 43.2 to 98.91 % for group to respectively with an increase in the sample dosing rate from 0.2 to 0.5 g. The indicator of static volume capacity also depends on the mass of the sample added to the solution and decreases with the dosing rate growth. Wastes of iron-magnesium production contain magnesium and iron in high concentrations. After interaction with industrial waste water, they actively release magnesium into the solution, but continue to extract iron from it. The indicators of the degree of pollutant extraction from solutions and of static volume capacity for iron have high values regardless of the sample weight for both groups and vary from 99.85 to 99.98% and from 3.9 to 10.82 mg/g. Scope of results. The data obtained will used to develop effective materials and methods for water bodies pollution elimination.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.