Synthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution control
The water hyacinth biomass was used for the synthesis of activated carbons in a process of chemical activation with ZnCl2, followed by controlled pyrolysis. The applied impregnation weight ratios ZnCl2 and dry hyacinth biomass were in the range of 0.5–3.5. The carbonization was conducted at four dif...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2023-01-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2023/0352-51392200006M.pdf |
| _version_ | 1811155261097771008 |
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| author | Mohammaad Ahmad Hakky Kijevčanin Mirjana |
| author_facet | Mohammaad Ahmad Hakky Kijevčanin Mirjana |
| author_sort | Mohammaad Ahmad Hakky |
| collection | DOAJ |
| description | The water hyacinth biomass was used for the synthesis of activated carbons in a process of chemical activation with ZnCl2, followed by controlled pyrolysis. The applied impregnation weight ratios ZnCl2 and dry hyacinth biomass were in the range of 0.5–3.5. The carbonization was conducted at four different temperatures (400–700°C) under an inert atmosphere. The highest yield of activated carbon was obtained for the impregnation ratio of 0.5 and carbonization temperature of 400°C. The samples were characterized using elemental analysis, adsorption–desorption isotherms of nitrogen and SEM analysis. The activated carbon obtained with an impregnation ratio 2.0 and carbonization temperature of 500°C (2.0AC500) showed the highest values of specific surface area and total pore volume of 1317 m2 g-1 and 0.697 cm3 g-1, respectively. The adsorption of glyphosate, pesticide with a strong negative environmental impact, was a fast process, with the equilibrium time of 120 min. The adsorption isotherms were fitted with Langmuir and Freundlich model. The Langmuir adsorption capacity of qmax = 240.8 mg g-1 for 2.0AC500 classified the selected adsorbent as a very efficient one. The tested adsorption process followed the kinetics of the pseudo-second-order model. |
| first_indexed | 2024-04-10T04:30:09Z |
| format | Article |
| id | doaj.art-f7556fd7b6af44729db2af2065014f3c |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-04-10T04:30:09Z |
| publishDate | 2023-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-f7556fd7b6af44729db2af2065014f3c2023-03-10T08:04:52ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212023-01-01881698210.2298/JSC212121006M0352-51392200006MSynthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution controlMohammaad Ahmad Hakky0https://orcid.org/0000-0001-5714-5620Kijevčanin Mirjana1https://orcid.org/0000-0001-7126-3965University of Belgrade Faculty of Technology and Metallurgy, Belgrade, SerbiaUniversity of Belgrade Faculty of Technology and Metallurgy, Belgrade, SerbiaThe water hyacinth biomass was used for the synthesis of activated carbons in a process of chemical activation with ZnCl2, followed by controlled pyrolysis. The applied impregnation weight ratios ZnCl2 and dry hyacinth biomass were in the range of 0.5–3.5. The carbonization was conducted at four different temperatures (400–700°C) under an inert atmosphere. The highest yield of activated carbon was obtained for the impregnation ratio of 0.5 and carbonization temperature of 400°C. The samples were characterized using elemental analysis, adsorption–desorption isotherms of nitrogen and SEM analysis. The activated carbon obtained with an impregnation ratio 2.0 and carbonization temperature of 500°C (2.0AC500) showed the highest values of specific surface area and total pore volume of 1317 m2 g-1 and 0.697 cm3 g-1, respectively. The adsorption of glyphosate, pesticide with a strong negative environmental impact, was a fast process, with the equilibrium time of 120 min. The adsorption isotherms were fitted with Langmuir and Freundlich model. The Langmuir adsorption capacity of qmax = 240.8 mg g-1 for 2.0AC500 classified the selected adsorbent as a very efficient one. The tested adsorption process followed the kinetics of the pseudo-second-order model.http://www.doiserbia.nb.rs/img/doi/0352-5139/2023/0352-51392200006M.pdfcarbonizationcharacterizationpyrolysispesticide removaladsorptionmodeling |
| spellingShingle | Mohammaad Ahmad Hakky Kijevčanin Mirjana Synthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution control Journal of the Serbian Chemical Society carbonization characterization pyrolysis pesticide removal adsorption modeling |
| title | Synthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution control |
| title_full | Synthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution control |
| title_fullStr | Synthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution control |
| title_full_unstemmed | Synthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution control |
| title_short | Synthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution control |
| title_sort | synthesis of activated carbons from water hyacinth biomass and its application as adsorbents in water pollution control |
| topic | carbonization characterization pyrolysis pesticide removal adsorption modeling |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2023/0352-51392200006M.pdf |
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