Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal.
Industrial effluents and wastewater treatment have been a mainstay of environmental preservation and remediation for the last decade. Silica nanoparticles (SiO2) obtained from rice husk (RH) are an alternative to producing low-cost adsorbent and agriculture waste recovery. One adsorption challenge is facilitating the adsorbate separation and reuse cycle from aqueous medium. Thus, the present work employs SiO2 supported on polylactic acid (PLA) nanofibers obtained by the electrospinning method for Rhodamine B (RhB) dye adsorption. The silica surface was modified with trimethylsilyl chloride (TMCS) to increase affinity towards organic compounds. As a result, the silanized surface of the silica from rice husk (RHSil) promoted an increase in dye adsorption attributed to the hydrophobic properties. The PLA fibers containing 40% SiO2 (w w−1 ) showed about 85?95% capacity adsorption. The pseudo-first-order kinetic model was demonstrated to be the best model for PLA:SiO2 RHSil nanocomposites, exhibiting a 1.2956 mg g−1 adsorption capacity and 0.01404 min−1 kinetic constant (k1 ) value. In the reuse assay, PLA:SiO2 membranes preserved their adsorption activity after three consecutive adsorption cycles, with a value superior to 60%. Therefore, PLA:SiO2 nanocomposites from agricultural waste are an alternative to ?low-cost/lowend? treatments and can be used in traditional treatment systems to improve dye removal from contaminated waters.
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Format: | Artigo de periódico biblioteca |
Language: | Ingles English |
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2023-04-18
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Subjects: | Silica nanoparticles, Rice husk, PLA, Electrospinning, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1153225 https://doi.org/10.3390/ma16062429 |
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dig-alice-doc-11532252024-01-15T10:41:07Z Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal. MALAFATTI, J. O. D. TAVARES, F. A. NEVES, T. R. MASCARENHAS, B. C. QUARANTA, S. PARIS, E. C. ELAINE CRISTINA PARIS, CNPDIA. Silica nanoparticles Rice husk PLA Electrospinning Industrial effluents and wastewater treatment have been a mainstay of environmental preservation and remediation for the last decade. Silica nanoparticles (SiO2) obtained from rice husk (RH) are an alternative to producing low-cost adsorbent and agriculture waste recovery. One adsorption challenge is facilitating the adsorbate separation and reuse cycle from aqueous medium. Thus, the present work employs SiO2 supported on polylactic acid (PLA) nanofibers obtained by the electrospinning method for Rhodamine B (RhB) dye adsorption. The silica surface was modified with trimethylsilyl chloride (TMCS) to increase affinity towards organic compounds. As a result, the silanized surface of the silica from rice husk (RHSil) promoted an increase in dye adsorption attributed to the hydrophobic properties. The PLA fibers containing 40% SiO2 (w w−1 ) showed about 85?95% capacity adsorption. The pseudo-first-order kinetic model was demonstrated to be the best model for PLA:SiO2 RHSil nanocomposites, exhibiting a 1.2956 mg g−1 adsorption capacity and 0.01404 min−1 kinetic constant (k1 ) value. In the reuse assay, PLA:SiO2 membranes preserved their adsorption activity after three consecutive adsorption cycles, with a value superior to 60%. Therefore, PLA:SiO2 nanocomposites from agricultural waste are an alternative to ?low-cost/lowend? treatments and can be used in traditional treatment systems to improve dye removal from contaminated waters. 2024-01-15T10:41:07Z 2024-01-15T10:41:07Z 2023-04-18 2023 Artigo de periódico Materials, v, 16, n. 6, 2429, 2023. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1153225 https://doi.org/10.3390/ma16062429 Ingles en openAccess 18 p. |
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Silica nanoparticles Rice husk PLA Electrospinning Silica nanoparticles Rice husk PLA Electrospinning |
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Silica nanoparticles Rice husk PLA Electrospinning Silica nanoparticles Rice husk PLA Electrospinning MALAFATTI, J. O. D. TAVARES, F. A. NEVES, T. R. MASCARENHAS, B. C. QUARANTA, S. PARIS, E. C. Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal. |
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Industrial effluents and wastewater treatment have been a mainstay of environmental preservation and remediation for the last decade. Silica nanoparticles (SiO2) obtained from rice husk (RH) are an alternative to producing low-cost adsorbent and agriculture waste recovery. One adsorption challenge is facilitating the adsorbate separation and reuse cycle from aqueous medium. Thus, the present work employs SiO2 supported on polylactic acid (PLA) nanofibers obtained by the electrospinning method for Rhodamine B (RhB) dye adsorption. The silica surface was modified with trimethylsilyl chloride (TMCS) to increase affinity towards organic compounds. As a result, the silanized surface of the silica from rice husk (RHSil) promoted an increase in dye adsorption attributed to the hydrophobic properties. The PLA fibers containing 40% SiO2 (w w−1 ) showed about 85?95% capacity adsorption. The pseudo-first-order kinetic model was demonstrated to be the best model for PLA:SiO2 RHSil nanocomposites, exhibiting a 1.2956 mg g−1 adsorption capacity and 0.01404 min−1 kinetic constant (k1 ) value. In the reuse assay, PLA:SiO2 membranes preserved their adsorption activity after three consecutive adsorption cycles, with a value superior to 60%. Therefore, PLA:SiO2 nanocomposites from agricultural waste are an alternative to ?low-cost/lowend? treatments and can be used in traditional treatment systems to improve dye removal from contaminated waters. |
author2 |
ELAINE CRISTINA PARIS, CNPDIA. |
author_facet |
ELAINE CRISTINA PARIS, CNPDIA. MALAFATTI, J. O. D. TAVARES, F. A. NEVES, T. R. MASCARENHAS, B. C. QUARANTA, S. PARIS, E. C. |
format |
Artigo de periódico |
topic_facet |
Silica nanoparticles Rice husk PLA Electrospinning |
author |
MALAFATTI, J. O. D. TAVARES, F. A. NEVES, T. R. MASCARENHAS, B. C. QUARANTA, S. PARIS, E. C. |
author_sort |
MALAFATTI, J. O. D. |
title |
Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal. |
title_short |
Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal. |
title_full |
Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal. |
title_fullStr |
Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal. |
title_full_unstemmed |
Modified Silica Nanoparticles from Rice Husk Supported on Polylactic Acid as Adsorptive Membranes for Dye Removal. |
title_sort |
modified silica nanoparticles from rice husk supported on polylactic acid as adsorptive membranes for dye removal. |
publishDate |
2023-04-18 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1153225 https://doi.org/10.3390/ma16062429 |
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