OBTAINING A LOW COST ADSORBENT FROM A BIODEGRADABLE POLYMER FOR THE REMOVAL OF LOW MOLECULAR ORGANIC COMPOUNDS FROM SOLUTIONS OF TECHNOLOGICAL ORIGIN
The work solves the problem of obtaining adsorbents from cheap and available feedstock able for the removal of low-molecular-weight toxic organic substances from aqueous solutions. It is proposed to obtain an adsorbent from the wastes of such biodegradable polymer as polylactic acid (PLA)...
Збережено в:
| Дата: | 2024 |
|---|---|
| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
V.I.Vernadsky Institute of General and Inorganic Chemistry
2024
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| Онлайн доступ: | https://ucj.org.ua/index.php/journal/article/view/678 |
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| Назва журналу: | Ukrainian Chemistry Journal |
Репозитарії
Ukrainian Chemistry Journal| id |
oai:ojs2.1444248.nisspano.web.hosting-test.net:article-678 |
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oai:ojs2.1444248.nisspano.web.hosting-test.net:article-6782025-02-28T14:11:28Z OBTAINING A LOW COST ADSORBENT FROM A BIODEGRADABLE POLYMER FOR THE REMOVAL OF LOW MOLECULAR ORGANIC COMPOUNDS FROM SOLUTIONS OF TECHNOLOGICAL ORIGIN Dzyazko, Yuliya Molina, Luiza Carla Augusta Ribeiro, Anna Carla Wernke, Gessica Bergamasco, Rosangela low cost adsorbent, polylactic acid, cationdyes, methyleneblue, ion exchange, adsorption, decoloration of waste water. The work solves the problem of obtaining adsorbents from cheap and available feedstock able for the removal of low-molecular-weight toxic organic substances from aqueous solutions. It is proposed to obtain an adsorbent from the wastes of such biodegradable polymer as polylactic acid (PLA), for example, from used packaging. The polymer was heated up to the melting point, cooled and ground. The thermally treated PLA sample contained end carboxyl and hydroxyl groups, which were identified with Fourier-IR spectroscopy, and the ion-exchange activity of the polymer was found. These groups provide a surface charge density of 0.02−0.12 C m-2 in the pH range of 4−10, ξ-potential reaches 30 mV in an alkaline media. Adsorption of such cationic dye as methylene blue (MB) was studied under static and dynamic conditions. The Temkin and Freundlich models were applied to the adsorption isotherms, an increase in the adsorption capacity of the polymer was found with an increase in pH from 4 to 10, while the surface became more energetically heterogeneous. The capacity of PLA is 16−30 mg g-1 in the absence of a supporting electrolyte, and 10−28 mg g-1, when adsorption occurs from a two-component solution containing also NaCl. According to the results of the study of MB adsorption, and the data of electronic spectroscopy for suspension of the polymer, it was established that the dye removal from the solution occurs mainly due to electrostatic attraction to the negatively charged PLA surface. The adsorbent was proposed to be employed for the removal of the residual colour of wastewater after its treatment, for example, with reverse osmosis or nanofiltration. V.I.Vernadsky Institute of General and Inorganic Chemistry 2024-08-30 Article Article Inorganic Chemistry Неорганическая химия Неорганічна хімія application/pdf https://ucj.org.ua/index.php/journal/article/view/678 10.33609/2708-129X.90.7.2024.3-24 Ukrainian Chemistry Journal; Vol. 90 No. 7 (2024): Ukrainian Chemistry Journal; 3-24 Украинский химический журнал; Том 90 № 7 (2024): Ukrainian Chemistry Journal; 3-24 Український хімічний журнал; Том 90 № 7 (2024): Ukrainian Chemistry Journal; 3-24 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/678/335 |
| institution |
Ukrainian Chemistry Journal |
| baseUrl_str |
|
| datestamp_date |
2025-02-28T14:11:28Z |
| collection |
OJS |
| language |
English |
| topic_facet |
low cost adsorbent polylactic acid cationdyes methyleneblue ion exchange adsorption decoloration of waste water. |
| format |
Article |
| author |
Dzyazko, Yuliya Molina, Luiza Carla Augusta Ribeiro, Anna Carla Wernke, Gessica Bergamasco, Rosangela |
| spellingShingle |
Dzyazko, Yuliya Molina, Luiza Carla Augusta Ribeiro, Anna Carla Wernke, Gessica Bergamasco, Rosangela OBTAINING A LOW COST ADSORBENT FROM A BIODEGRADABLE POLYMER FOR THE REMOVAL OF LOW MOLECULAR ORGANIC COMPOUNDS FROM SOLUTIONS OF TECHNOLOGICAL ORIGIN |
| author_facet |
Dzyazko, Yuliya Molina, Luiza Carla Augusta Ribeiro, Anna Carla Wernke, Gessica Bergamasco, Rosangela |
| author_sort |
Dzyazko, Yuliya |
| title |
OBTAINING A LOW COST ADSORBENT FROM A BIODEGRADABLE POLYMER FOR THE REMOVAL OF LOW MOLECULAR ORGANIC COMPOUNDS FROM SOLUTIONS OF TECHNOLOGICAL ORIGIN |
| title_short |
OBTAINING A LOW COST ADSORBENT FROM A BIODEGRADABLE POLYMER FOR THE REMOVAL OF LOW MOLECULAR ORGANIC COMPOUNDS FROM SOLUTIONS OF TECHNOLOGICAL ORIGIN |
| title_full |
OBTAINING A LOW COST ADSORBENT FROM A BIODEGRADABLE POLYMER FOR THE REMOVAL OF LOW MOLECULAR ORGANIC COMPOUNDS FROM SOLUTIONS OF TECHNOLOGICAL ORIGIN |
| title_fullStr |
OBTAINING A LOW COST ADSORBENT FROM A BIODEGRADABLE POLYMER FOR THE REMOVAL OF LOW MOLECULAR ORGANIC COMPOUNDS FROM SOLUTIONS OF TECHNOLOGICAL ORIGIN |
| title_full_unstemmed |
OBTAINING A LOW COST ADSORBENT FROM A BIODEGRADABLE POLYMER FOR THE REMOVAL OF LOW MOLECULAR ORGANIC COMPOUNDS FROM SOLUTIONS OF TECHNOLOGICAL ORIGIN |
| title_sort |
obtaining a low cost adsorbent from a biodegradable polymer for the removal of low molecular organic compounds from solutions of technological origin |
| description |
The work solves the problem of obtaining adsorbents from cheap and available feedstock able for the removal of low-molecular-weight toxic organic substances from aqueous solutions. It is proposed to obtain an adsorbent from the wastes of such biodegradable polymer as polylactic acid (PLA), for example, from used packaging. The polymer was heated up to the melting point, cooled and ground. The thermally treated PLA sample contained end carboxyl and hydroxyl groups, which were identified with Fourier-IR spectroscopy, and the ion-exchange activity of the polymer was found. These groups provide a surface charge density of 0.02−0.12 C m-2 in the pH range of 4−10, ξ-potential reaches 30 mV in an alkaline media. Adsorption of such cationic dye as methylene blue (MB) was studied under static and dynamic conditions. The Temkin and Freundlich models were applied to the adsorption isotherms, an increase in the adsorption capacity of the polymer was found with an increase in pH from 4 to 10, while the surface became more energetically heterogeneous. The capacity of PLA is 16−30 mg g-1 in the absence of a supporting electrolyte, and 10−28 mg g-1, when adsorption occurs from a two-component solution containing also NaCl. According to the results of the study of MB adsorption, and the data of electronic spectroscopy for suspension of the polymer, it was established that the dye removal from the solution occurs mainly due to electrostatic attraction to the negatively charged PLA surface. The adsorbent was proposed to be employed for the removal of the residual colour of wastewater after its treatment, for example, with reverse osmosis or nanofiltration. |
| publisher |
V.I.Vernadsky Institute of General and Inorganic Chemistry |
| publishDate |
2024 |
| url |
https://ucj.org.ua/index.php/journal/article/view/678 |
| work_keys_str_mv |
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2025-09-24T17:43:57Z |
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2025-09-24T17:43:57Z |
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