Experimental and modeling analyses of COD removal from industrial wastewater using the TiO2–chitosan nanocomposites
Abstract In the present study, titanium oxide (TiO2) nanoparticles, chitosan, and several nanocomposites containing different mass dosages of TiO2 and chitosan have been applied as the adsorbent for COD removal from the industrial wastewater (Bouali Sina Petrochemical Company, Iran). The FESEM, XRD,...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-15387-0 |
| _version_ | 1818555860253671424 |
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| author | Shahin Heydari Orojlou Saadat Rastegarzadeh Behrooz Zargar |
| author_facet | Shahin Heydari Orojlou Saadat Rastegarzadeh Behrooz Zargar |
| author_sort | Shahin Heydari Orojlou |
| collection | DOAJ |
| description | Abstract In the present study, titanium oxide (TiO2) nanoparticles, chitosan, and several nanocomposites containing different mass dosages of TiO2 and chitosan have been applied as the adsorbent for COD removal from the industrial wastewater (Bouali Sina Petrochemical Company, Iran). The FESEM, XRD, and FTIR tests have been employed to characterize TiO2 nanoparticles, chitosan, and fabricated nanocomposites. Then, the effect of adsorption parameters, including TiO2–chitosan mass ratio (1:1, 1:2, and 2:1), adsorbent content (0.25–2.5 g), temperature (20–50 °C), pH (3–11), solution volume (100–500 mL), and contact time (30–180 min) on the COD reduction has also been monitored both experimentally and numerically. The Box–Behnken design of the experiment approves that TiO2–chitosan (1:1), adsorbent content of 2.5 g, temperature = 20 °C, pH 7.4, solution volume of 100 mL, and contact time = 180 min are the condition that maximizes the COD removal (i.e., 94.5%). Moreover, the Redlich–Peterson and Pseudo-second order models are the best isotherm and kinetic scenarios to describe COD removal’s transient and equilibrium behaviors. The maximum monolayer COD adsorption capacity of the TiO2–chitosan nanocomposite is 89.5 mg g−1. The results revealed that the industrial wastewater COD is better to remove using the TiO2–chitosan (1:1) at temperature = 20 °C. |
| first_indexed | 2024-12-12T11:59:04Z |
| format | Article |
| id | doaj.art-7007babeeaf7491480b51a45c8842a4a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-12T11:59:04Z |
| publishDate | 2022-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-7007babeeaf7491480b51a45c8842a4a2022-12-22T00:25:09ZengNature PortfolioScientific Reports2045-23222022-06-0112111510.1038/s41598-022-15387-0Experimental and modeling analyses of COD removal from industrial wastewater using the TiO2–chitosan nanocompositesShahin Heydari Orojlou0Saadat Rastegarzadeh1Behrooz Zargar2Department of Chemistry, Faculty of Sciences, Shahid Chamran University of AhvazDepartment of Chemistry, Faculty of Sciences, Shahid Chamran University of AhvazDepartment of Chemistry, Faculty of Sciences, Shahid Chamran University of AhvazAbstract In the present study, titanium oxide (TiO2) nanoparticles, chitosan, and several nanocomposites containing different mass dosages of TiO2 and chitosan have been applied as the adsorbent for COD removal from the industrial wastewater (Bouali Sina Petrochemical Company, Iran). The FESEM, XRD, and FTIR tests have been employed to characterize TiO2 nanoparticles, chitosan, and fabricated nanocomposites. Then, the effect of adsorption parameters, including TiO2–chitosan mass ratio (1:1, 1:2, and 2:1), adsorbent content (0.25–2.5 g), temperature (20–50 °C), pH (3–11), solution volume (100–500 mL), and contact time (30–180 min) on the COD reduction has also been monitored both experimentally and numerically. The Box–Behnken design of the experiment approves that TiO2–chitosan (1:1), adsorbent content of 2.5 g, temperature = 20 °C, pH 7.4, solution volume of 100 mL, and contact time = 180 min are the condition that maximizes the COD removal (i.e., 94.5%). Moreover, the Redlich–Peterson and Pseudo-second order models are the best isotherm and kinetic scenarios to describe COD removal’s transient and equilibrium behaviors. The maximum monolayer COD adsorption capacity of the TiO2–chitosan nanocomposite is 89.5 mg g−1. The results revealed that the industrial wastewater COD is better to remove using the TiO2–chitosan (1:1) at temperature = 20 °C.https://doi.org/10.1038/s41598-022-15387-0 |
| spellingShingle | Shahin Heydari Orojlou Saadat Rastegarzadeh Behrooz Zargar Experimental and modeling analyses of COD removal from industrial wastewater using the TiO2–chitosan nanocomposites Scientific Reports |
| title | Experimental and modeling analyses of COD removal from industrial wastewater using the TiO2–chitosan nanocomposites |
| title_full | Experimental and modeling analyses of COD removal from industrial wastewater using the TiO2–chitosan nanocomposites |
| title_fullStr | Experimental and modeling analyses of COD removal from industrial wastewater using the TiO2–chitosan nanocomposites |
| title_full_unstemmed | Experimental and modeling analyses of COD removal from industrial wastewater using the TiO2–chitosan nanocomposites |
| title_short | Experimental and modeling analyses of COD removal from industrial wastewater using the TiO2–chitosan nanocomposites |
| title_sort | experimental and modeling analyses of cod removal from industrial wastewater using the tio2 chitosan nanocomposites |
| url | https://doi.org/10.1038/s41598-022-15387-0 |
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