Adsorption of Phenol in Wastewater Using Nano Grapheme Oxide-Chitosan-Bentonite Absorbent
Background and Objectives: Contamination of surface and groundwater sources with aromatic compounds such as phenolic compounds is one of the newest environmental problems that humans encountered it today. One of the ways to remove these pollutants is the use of polymeric adsorbents. In this study, c...
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| Format: | Article |
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Tabriz University of Medical Sciences
2020-12-01
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| Series: | Taṣvīr-i salāmat |
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| Online Access: | https://doh.tbzmed.ac.ir/PDF/doh-11-368.pdf |
| _version_ | 1818561437997465600 |
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| author | Alireza Jadid Shadab Shahsavari Aliakbar Seifkordi Ali Vaziri Yazdi |
| author_facet | Alireza Jadid Shadab Shahsavari Aliakbar Seifkordi Ali Vaziri Yazdi |
| author_sort | Alireza Jadid |
| collection | DOAJ |
| description | Background and Objectives: Contamination of surface and groundwater sources with aromatic compounds such as phenolic compounds is one of the newest environmental problems that humans encountered it today. One of the ways to remove these pollutants is the use of polymeric adsorbents. In this study, chitosan-bentonite-nano-graphene oxide nanosorbent was synthesized to investigate the phenol adsorption. Material and Methods: In this research, experimental design was performed using Design-Expert 7.0 software to investigate the effect of independent variables including nano graphene oxide, chitosan and bentonite on the dependent variable (phenol removal rate). Moreover, phenol absorption isotherm, kinetics and thermodynamics, were also examined. Results: Eventually, the optimum formulation of nano-adsorbent with specifications of 0.1 g of chitosan, 0.18 g of bentonite and 0.07 g of nano-graphene oxide was investigated. Optimal adsorption conditions were also obtained at a concentration of 100 ppm, pH=5 and 45 minutes of absorption time. Conclusion: Finally, it was found that the synthesized nanosorbent follows the Langmuir isotherm, which represents physical adsorption, and also the kinetics of the adsorption process is the diffusion between particles. As a result, it was found that the optimal application of this nano-adsrbent is in wastewaters with a temperature of less than 400 °C. |
| first_indexed | 2024-12-14T00:50:51Z |
| format | Article |
| id | doaj.art-5fe38282068546d0ab1cda8501d09341 |
| institution | Directory Open Access Journal |
| issn | 2008-9058 2423-6640 |
| language | fas |
| last_indexed | 2024-12-14T00:50:51Z |
| publishDate | 2020-12-01 |
| publisher | Tabriz University of Medical Sciences |
| record_format | Article |
| series | Taṣvīr-i salāmat |
| spelling | doaj.art-5fe38282068546d0ab1cda8501d093412022-12-21T23:23:50ZfasTabriz University of Medical SciencesTaṣvīr-i salāmat2008-90582423-66402020-12-0111436838010.34172/doh.2020.44doh-337Adsorption of Phenol in Wastewater Using Nano Grapheme Oxide-Chitosan-Bentonite AbsorbentAlireza Jadid0Shadab Shahsavari1Aliakbar Seifkordi2Ali Vaziri Yazdi3 Chemical Engineering Department, Oil and Chemical Engineering Campus, Science and Research Branch, Islamic Azad University, Tehran, Iran Chemical Engineering Department, Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran Chemical Engineering Department, Oil and Chemical Engineering Campus, Sharif University of Technology, Tehran, Iran Chemical Engineering Department, Oil and Chemical Engineering Campus, Science and Research Branch, Islamic Azad University, Tehran, Iran Background and Objectives: Contamination of surface and groundwater sources with aromatic compounds such as phenolic compounds is one of the newest environmental problems that humans encountered it today. One of the ways to remove these pollutants is the use of polymeric adsorbents. In this study, chitosan-bentonite-nano-graphene oxide nanosorbent was synthesized to investigate the phenol adsorption. Material and Methods: In this research, experimental design was performed using Design-Expert 7.0 software to investigate the effect of independent variables including nano graphene oxide, chitosan and bentonite on the dependent variable (phenol removal rate). Moreover, phenol absorption isotherm, kinetics and thermodynamics, were also examined. Results: Eventually, the optimum formulation of nano-adsorbent with specifications of 0.1 g of chitosan, 0.18 g of bentonite and 0.07 g of nano-graphene oxide was investigated. Optimal adsorption conditions were also obtained at a concentration of 100 ppm, pH=5 and 45 minutes of absorption time. Conclusion: Finally, it was found that the synthesized nanosorbent follows the Langmuir isotherm, which represents physical adsorption, and also the kinetics of the adsorption process is the diffusion between particles. As a result, it was found that the optimal application of this nano-adsrbent is in wastewaters with a temperature of less than 400 °C.https://doh.tbzmed.ac.ir/PDF/doh-11-368.pdfchitosanbentonitenano graphene oxidephenolwaste-water treatment |
| spellingShingle | Alireza Jadid Shadab Shahsavari Aliakbar Seifkordi Ali Vaziri Yazdi Adsorption of Phenol in Wastewater Using Nano Grapheme Oxide-Chitosan-Bentonite Absorbent Taṣvīr-i salāmat chitosan bentonite nano graphene oxide phenol waste-water treatment |
| title | Adsorption of Phenol in Wastewater Using Nano Grapheme Oxide-Chitosan-Bentonite Absorbent |
| title_full | Adsorption of Phenol in Wastewater Using Nano Grapheme Oxide-Chitosan-Bentonite Absorbent |
| title_fullStr | Adsorption of Phenol in Wastewater Using Nano Grapheme Oxide-Chitosan-Bentonite Absorbent |
| title_full_unstemmed | Adsorption of Phenol in Wastewater Using Nano Grapheme Oxide-Chitosan-Bentonite Absorbent |
| title_short | Adsorption of Phenol in Wastewater Using Nano Grapheme Oxide-Chitosan-Bentonite Absorbent |
| title_sort | adsorption of phenol in wastewater using nano grapheme oxide chitosan bentonite absorbent |
| topic | chitosan bentonite nano graphene oxide phenol waste-water treatment |
| url | https://doh.tbzmed.ac.ir/PDF/doh-11-368.pdf |
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