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The concept of creation of the geoportal “Environmental Safety of Ukrainian-Polish Transboundary Territories” has been developed. General principles and methodological approaches of spatiotemporal geographically distributed thematic data integration were substantiated. The geoinformation system, which is based on results of monitoring researches of objects of the nature reserve fund in the biosphere reserve “Roztochya”, is considered. The geoinformation monitoring technologies ensure ecological safety management. The proposed geoportal determines directions of information technology implementation for transboundary monitoring of ecosystems in the euroregions.

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Authors and Affiliations

Volodymyr Mokryy

Volodymyr Tomin

Monika Niska

Oleksandr Moroz

Ihor Petrushka

Olha Bobush

Anna Tsyhaniuk

Ruslan Grechanyk

Inessa Shemelynets

Adsorption method of purification of stocks from chromium(III) ions by bentonite clays

Christina Soloviy Myroslav Malovanyy Olga Palamarchuk Iryna Trach Halyna Petruk Halyna Sakalova Tamara Vasylinych Nataliya Vronska

Journal of Water and Land Development | 2021 | No 48 | 99-104 | DOI: 10.24425/jwld.2021.136152

Keywords adsorption bentonite chromium ions environmental safety natural clay sorbents wastewater purification

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Abstract

The process of sorption of chromium(III) ions with a stationary sorbent layer of bentonite clays was investigated. The main advantages of using bentonites in water purification technologies are described: powerful geological reserves, cheap process of rock extraction, easy preparation for transportation and use, possibility of using waste sorbents in other technol-ogies that is why there is no need in costly regeneration. The influence of various factors (process duration, an adsorbent layer) on the degree of wastewater purification from chromium ions, the effect of pumping speed on the dynamic capacity of the sorbent was studied and the effective volume was determined. The adsorption efficacy increases with the increase of the adsorbent layer, what can be explained by the development of the active sorption surface. As the initial concentration of chromium ions increases, the time of appearance of the first traces of the contaminant at the exit of the column increases, as well as the total time to channeling. The results of the studies indicate a higher adsorption capacity of modified bentonite with respect to Cr3+ ions compared to its natural formula. The cleaning efficacy of the solution with a concentration of chromium ions of 0.5 g∙dm–3 is increased by 5% when using 15 g of modified bentonite and 6,5% in the case one uses 20 g compared to the natural form.

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Authors and Affiliations

Christina Soloviy

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Myroslav Malovanyy

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Olga Palamarchuk

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Iryna Trach

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Halyna Petruk

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Halyna Sakalova

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Tamara Vasylinych

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Nataliya Vronska

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Lviv Polytechnic National University, Viacheslav Chornovil Institute of Sustainable Development, Department of Ecology and Sustainable Environmental Management, Lviv, Ukraine
Vinnytsia Mykhajlo Kotsiubynskyi State Pedagogical University, Educational and Scientific Institute of Pedagogy, Psychology, Department of Psychology and Social Work, Vinnitsa, Ukraine
Vinnytsia National Technical University, Institute for Environmental Safety and Environmental Monitoring, Department of Ecology and Environmental Safety, Vinnitsa, Ukraine
Vinnytsia Mykhajlo Kotsiubynskyi State Pedagogical University, Faculty of Natural and Geography, Department of Chemistry, Vinnitsa, Ukraine

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Reliability of geodetic control measurements of high dams as a guarantee of safety of the construction and the natural environment

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Informational support on creation of the geoportal “Environmental Safety Of Ukrainian-Polish Transboundary Territories” by technologies of robotized monitoring

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Adsorption method of purification of stocks from chromium(III) ions by bentonite clays

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