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Документ Water Purification from Ions of Cadmium (II) Using a Bio-Plateau(2019) Lapan, Oksana; Mikhyeyev, Oleksandr; Madzhd, Svitlana; Dmytrukha, Tetyana; Cherniak, Larysa; Petrusenko, ValentynaThe study was conducted with the purpose of experimentally developing the method of water purification from ions of cadmium (II) using a new design of a bio-plateau, which is based on the use of terrestrial plants. In order to construct the bio–plateau, the following chemically inert floating materials were used as the substrate: perlite, expanded clay, granular foam, vermiculite, cork, on top of which the seeds of higher terrestrial plants were placed. The experimental data showed that foam was the best of the tested substrates, and of plants – barley, oats, corn and rye. The constructed bio-plateau was placed into tanks with a solution of cadmium on the 9th day of incubation to study the cleaning efficiency of terrestrial plants on the aquatic environment. Determination of the residual concentration of cadmium was performed with the method of AAC at λ=228.8. As a result, it was found that rye showed the best sorption properties of the tested plants. The influence of additional aeration and pH of the medium on the degree of water purification was established. The highest treatment efficiency was observed in the variant of a bio-plateau with aeration and at a pH of 8–9. The study shows the possibility of using terrestrial plants for the phytoremediation of water bodiesДокумент Development of the hydrophytic structure of the bioplateau type for the purpose of phytoremediation(2021) Mikhyeyev, Oleksandr; Lapan, Oksana; Madzhd, Svitlana; Cherniak, Larysa; Dmytrukha, TetyanaA floating structure of a bioplateau has been developed for the purification of water bodies from the toxic substances, the biotic component of which is terrestrial plants. Chemically inert floating materials were used as a substrate for the construction of the bioplateau: perlite, expanded clay, granular foam, vermiculite, cork. Substrate testing has shown that granular expanded polystyrene is the most optimal for the usage. The study of different options for seed germination in the design of the bioplateau has shown that its placement on the top of the substrate is the best option. The usage of perlite in combination with granular foam had created an additional capillary effect, due to which the seeds germinated at a faster rate. To optimize the hydrophytic structure a grid was used, which made it possible to increase the overall density of the bioplateau. An algorithm for creating a "rolled" plant that is suitable for transportation and placement in the surface water bodies that require purification from toxic substances has been developedДокумент Development of the hydrophytic structure of the bioplateau type for the purification of water bodies from 137Cs(2022) Lapan, Oksana; Mikhyeyev, Oleksandr; Madzhd, Svitlana; Cherniak, Larysa; Maksimenko, OlenaA floating structure of a bioplateau has been developed for the purification of water bodies from the toxic substances, the biotic component of which is terrestrial plants. Chemically inert floating materials were used as a substrate for the construction of the bioplateau: perlite, expanded clay, granular foam, vermiculite, cork. Substrate testing has shown that granular expanded polystyrene is the most optimal for the usage. The study of different options for seed germination in the design of the bioplateau has shown that its placement on the top of the substrate is the best option. The usage of perlite in combination with granular foam had created an additional capillary effect, due to which the seeds germinated at a faster rate. To optimize the hydrophytic structure a grid was used, which made it possible to increase the overall density of the bioplateau. An algorithm for creating a «rolled» plant that is suitable for transportation and placement in the surface water bodies that require purification from toxic substances has been developed. There was done a comparative study of the effectiveness of purification of the aquatic environment from ions of radiocesium bioplate with wheat plants of different varieties. It is confirmed that the efficiency of sorption of 137Cs ions by terrestrial plants is influenced by the nature and concentration of macrocations in the aqueous medium.Документ Розроблення гідрофітної споруди типу біоплато для цілей фіторемедіації(2022) Міхєєв, Олександр Миколайович; Лапань, Оксана Володимирівна; Маджд, Світлана Михайлівна; Черняк, Лариса МиколаївнаРозроблено плавучу конструкцію біоплато, біотичною складовою якої є наземні рослини, для очищення водних об’єктів від токсичних речовин. Для конструювання біоплато як субстрат використано інертні в хімічному відношенні плавучі матеріали: перліт, керамзит, гранульований пінопласт, вермикуліт, коркову пробку. У результаті випробування субстратів з’ясовано, що найбільш оптимальним у використанні є гранульований пінополістирол (полістирол). Дослідження різних варіантів пророщування насіння в конструкції біоплато показало, що його розміщення поверх субстрату є найкращим варіантом. Для оптимізації гідрофітної споруди використовували сітку, що дало змогу збільшити загальну щільність біоплато. Проведено порівняльне дослідження ефективності очищення водного середовища від іонів радіоцезію біоплато з рослинами пшениці різного сорту. Підтверджено, що ефективність сорбції наземними рослинами іонів 137Cs залежить від природи і концентрації макрокатіонів у водному середовищі