OBTAINING OF ADSORBENTS USING CITRIC ACID MODIFICATION OF PLANT WASTE
Currently, information about the influence of factors for the obtaining modified plant waste using citric acid on their adsorption properties towards to cationic dyes is few and contradictory. In this paper experiment was designed to find the optimum variables such as citric concentration, modificat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Odessa I. I. Mechnikov National University
2019-05-01
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| Series: | Vìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ |
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| Online Access: | http://heraldchem.onu.edu.ua/article/view/169226 |
| _version_ | 1798029552621977600 |
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| author | L. M. Soldatkina M. A. Zavrichko |
| author_facet | L. M. Soldatkina M. A. Zavrichko |
| author_sort | L. M. Soldatkina |
| collection | DOAJ |
| description | Currently, information about the influence of factors for the obtaining modified plant waste using citric acid on their adsorption properties towards to cationic dyes is few and contradictory. In this paper experiment was designed to find the optimum variables such as citric concentration, modification temperature and modification time for the obtaining of adsorbents from ligno-cellulosic plant waste (barley straw and corn stalks) by their modification and using for removal cationic dyes (methylene blue and malachite green). The response of the designed experiment was evaluated through cationic dyes removal efficiency. For optimization of plant waste modification response surface methodology was utilized where full factorial central composite design (as 23) has been employed. It allows to carry out a minimum number of experiments, as well as to analyze the interaction between the variables. The empirical models regarding actual variables of plant waste modification for cationic dye removal efficiency were obtained using MINITAB 18 software as regression equations. The values of R2 and R2adj for dyes removal efficiency were found and their values verified the linearity between the model’s calculated results and experimental data for cationic dyes removal efficiency. Predicted values thus obtained were closed to experimental value indicating suitability of the models. The optimum points for citric concentration, modification time and temperature were found to be 0.78 M, 210 min and 393 K, respectively. Under these conditions, the modified adsorbents from barley straw and corn stalks removal efficiency should have maximum of 93-95 %. The physico-chemical characteristics of unmodified and modified barley straw and corn stalks prepared at optimum points for citric concentration, modification time and temperature were analyzed. |
| first_indexed | 2024-04-11T19:26:00Z |
| format | Article |
| id | doaj.art-05f076bea93649fcac3482a0a18f75af |
| institution | Directory Open Access Journal |
| issn | 2304-0947 2414-5963 |
| language | English |
| last_indexed | 2024-04-11T19:26:00Z |
| publishDate | 2019-05-01 |
| publisher | Odessa I. I. Mechnikov National University |
| record_format | Article |
| series | Vìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ |
| spelling | doaj.art-05f076bea93649fcac3482a0a18f75af2022-12-22T04:07:08ZengOdessa I. I. Mechnikov National UniversityVìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ2304-09472414-59632019-05-01242(70)475910.18524/2304-0947.2019.2(70).169226169226OBTAINING OF ADSORBENTS USING CITRIC ACID MODIFICATION OF PLANT WASTEL. M. Soldatkina0M. A. Zavrichko1Одеський національний університет імені І.І. Мечникова, кафедра фізичної та колоїдної хіміїОдеський національний університет імені І.І. Мечникова, кафедра фізичної та колоїдної хіміїCurrently, information about the influence of factors for the obtaining modified plant waste using citric acid on their adsorption properties towards to cationic dyes is few and contradictory. In this paper experiment was designed to find the optimum variables such as citric concentration, modification temperature and modification time for the obtaining of adsorbents from ligno-cellulosic plant waste (barley straw and corn stalks) by their modification and using for removal cationic dyes (methylene blue and malachite green). The response of the designed experiment was evaluated through cationic dyes removal efficiency. For optimization of plant waste modification response surface methodology was utilized where full factorial central composite design (as 23) has been employed. It allows to carry out a minimum number of experiments, as well as to analyze the interaction between the variables. The empirical models regarding actual variables of plant waste modification for cationic dye removal efficiency were obtained using MINITAB 18 software as regression equations. The values of R2 and R2adj for dyes removal efficiency were found and their values verified the linearity between the model’s calculated results and experimental data for cationic dyes removal efficiency. Predicted values thus obtained were closed to experimental value indicating suitability of the models. The optimum points for citric concentration, modification time and temperature were found to be 0.78 M, 210 min and 393 K, respectively. Under these conditions, the modified adsorbents from barley straw and corn stalks removal efficiency should have maximum of 93-95 %. The physico-chemical characteristics of unmodified and modified barley straw and corn stalks prepared at optimum points for citric concentration, modification time and temperature were analyzed.http://heraldchem.onu.edu.ua/article/view/169226модифікаціярослинні матеріалиадсорбціякатіонні барвникицентральний композитний план |
| spellingShingle | L. M. Soldatkina M. A. Zavrichko OBTAINING OF ADSORBENTS USING CITRIC ACID MODIFICATION OF PLANT WASTE Vìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ модифікація рослинні матеріали адсорбція катіонні барвники центральний композитний план |
| title | OBTAINING OF ADSORBENTS USING CITRIC ACID MODIFICATION OF PLANT WASTE |
| title_full | OBTAINING OF ADSORBENTS USING CITRIC ACID MODIFICATION OF PLANT WASTE |
| title_fullStr | OBTAINING OF ADSORBENTS USING CITRIC ACID MODIFICATION OF PLANT WASTE |
| title_full_unstemmed | OBTAINING OF ADSORBENTS USING CITRIC ACID MODIFICATION OF PLANT WASTE |
| title_short | OBTAINING OF ADSORBENTS USING CITRIC ACID MODIFICATION OF PLANT WASTE |
| title_sort | obtaining of adsorbents using citric acid modification of plant waste |
| topic | модифікація рослинні матеріали адсорбція катіонні барвники центральний композитний план |
| url | http://heraldchem.onu.edu.ua/article/view/169226 |
| work_keys_str_mv | AT lmsoldatkina obtainingofadsorbentsusingcitricacidmodificationofplantwaste AT mazavrichko obtainingofadsorbentsusingcitricacidmodificationofplantwaste |