heavy metals

The Effectiveness of Zeolite for The Removal of Heavy Metals From an Oil Industry Wastewater

Batch experiments are applied to determine the effectiveness of zeolite addition on the characteristics of wastewater of the oil industry and operational factors. The concentrations of heavy metals were measured using an atomic absorption spectrophotometry. Results have shown that 2.5 g/L of zeolite at a speed of 270 rpm, 6.5 pH would result in about 99% removal efficiency.

ACQUIRING PRACTICE IN ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT: CASE STUDY OF LVIV CITY DUMPSITE, UKRAINE

Municipal Solid Waste Management (MSWM) is a new and fast-growing business area that is becoming widespread in Ukraine. The fire accident at Lviv city landfill "Hrybovychi" forced the local governments to initiate work on its closure and reclamation. The Environmental Impact Assessment (EIA) of the planned activity is the first mandatory step in this direction. The complex nature of EIA procedures requires a similarly integrated approach to identify hazards and develop a shared vision of existing risks.

FEATURES OF ECOSORPTION BY ENTEROSORBENT UNDER TOXIC LOADING OF HEAVY METALS

The possibilities of using enterosorbents as mineral additives for bioprophylaxis and prevention of heavy metal retention in the body due to possible food contamination as a result of ecosystem biobalance and their accumulation in livestock bioproducts are analyzed. The dynamics of changes in physiological parameters of the body of experimental animals under the influence of heavy metals depending on the used enterosorbents as effective preventive measures that can reduce the level of lead in the blood and liver of animals in intoxication to control levels.

ASSESSMENT OF THE IMPACT OF THE PAPER ENTERPRISE ON THE ENVIRONMENT

Pulp and paper enterprises are of great importance for sustainable economic and environmental development of certain regions and the economy of Ukraine. Man uses many natural resources during the lifetime, creating a burden on nature. As the world's population increases, this load increases, leading to a shortage of resources and deterioration in the environment. The main activity of Kokhavynska Paper Mill PJSC is the production of sanitary products for the domestic market and export.

ENVIRONMENTAL POLLUTION IN THE AIRPORT IMPACT AREA–CASE STUDY OF THE BORYSPIL INTERNATIONAL AIRPORT

The paper presents the analysis of soil and phytomass contamination due to the functioning of air transport. The major issues revealed include extremely high level of soil contamination with petroleum products and an increased content of heavy metals both in soil and phytomass. The toxicity testing has demonstrated considerable pathogenic potential of soil from the airport area.

 

ASSESSMENT OF HEAVY METAL CONTAMINATION OF THE TECHNOECOSYSTEM OF THE KAKHOVKA MAIN CANAL OF THE KAKHOVKA IRRIGATION SYSTEM

In the present study, the authors demonstrate the accumulation of heavy metals in water and soft tissues of bivalve mollusks (Dreissena polymorphaDreissena bugensis) in the Kakhovka Main Canal within the Kherson and Zaporizhzhia regions (Ukraine) in the summer season (July–August 2018). The average metal concentrations in water decrease in the following order: Ni>Zn>Cr>Co>Cu>Cd.

Determination of competitive adsorption regularities in multi-component systems

Heavy metals in the environment are a source of some concern because of their potential reactivity, toxicity, and mobility in the soil. Zeolites have been used as a adsorbents to prevent potentially toxic metal contamination stemming from mining waste disposal. These materials are characterized by a high cation exchange capacity (CEC) and a predominance of negative charges, favoring their potential utilization in metal cation immobilization. It is widely used in laboratory research and industrial applications. Many physical and chemical processes occur at different interfaces.

INVESTIGATION OF MIGRATION OF HEAVY METALS IN THE SOIL ENVIRONMENT ON THE EXAMPLE OF COPPER SULFATE

The problem of permanent and prolonged pollution of soils by various kinds of pollutants, in particular heavy metals, was analyzed. Experimental investigations of penetration of copper sulfate into a vertical soil profile have been carried out. The adsorption capacity of the sandy environment of copper sulfate
was experimentally determined.

ECOLOGICAL AND GENETIC MONITORING OF THE AGRO - AND BIODIVERSITY OF THE COASTAL ZONE OF WESTERN GEORGIA

The intensity of heavy metals, natural and anthropogenic radionuclides are studied in the cultivated plants and soil in the vicinity of the western coast of Georgia. It is shown that the intensity of their accumulation depends on the type of plant, the place of sampling and the ecological zone. The highest rate of natural radionuclides is 40K, and the lowest - 226Ra, from the technogenic radionuclides the high-quality activeness is characterized to 137Cs, and its accumulation is the highest in the soil. From the hard metals, the plants most actively absorb lead and cadmium.

RESULTS OF THE DRINKING WATER ECOLOGICAL MONITORING ON THE TERRITORY OF THE AJARA AUTONOMOUS REPUBLIC

The research represented in the given work concerns studying the organoleptic, chemical and microbiological indicators in the drinking water on the territory of the Ajara Autonomous Republic. Particularly, among the organoleptic indicators the scent, taste and color of the drinking water have been
determined; as for the chemical indicators – pH, ammonia and nitrite- and out of the heavy metals – lead, arsenic, cadmium and zinc have been determined.