Adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastes
An invaluable utilization approach for industrial wastes is to employ them as effective adsorbents for environmental pollutants. This study aimed to investigate the phosphorus (P) adsorption behavior of coal wastes and zeolite in three forms of pristine powder (CP and ZP), nanoparticles (CNP and ZNP...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-03-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/87/6/1376 |
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| author | Somayeh Hosseinpour Majid Hejazi-Mehrizi Hassan Hashemipour Mohammad Hady Farpoor |
| author_facet | Somayeh Hosseinpour Majid Hejazi-Mehrizi Hassan Hashemipour Mohammad Hady Farpoor |
| author_sort | Somayeh Hosseinpour |
| collection | DOAJ |
| description | An invaluable utilization approach for industrial wastes is to employ them as effective adsorbents for environmental pollutants. This study aimed to investigate the phosphorus (P) adsorption behavior of coal wastes and zeolite in three forms of pristine powder (CP and ZP), nanoparticles (CNP and ZNP), and Fe (III)-modified nanoparticles (MCNP and MZNP). The adsorbents were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS) analyses. The effects of pH, initial P concentration, and contact time were studied under batch mode. Results showed an optimum pH range of 2–6 for the P adsorption process. The pseudo-second-order kinetic model and the Langmuir isotherm described the P adsorption data well. The P adsorption capacity of the studied adsorbents was enhanced after modifications. However, the coal-based modified adsorbents represented higher P adsorption performances rather than the zeolite ones. The maximum P adsorption capacity (Qmax) values were obtained as 0.36, 3.23, and 30.48 mg g−1 for CP, CNP, and MCNP, and 0.80, 2.84, and 6.99 mg g−1 for ZP, ZNP, and MZNP, respectively. The surface complexation, ligand exchange, and electrostatic attraction processes were identified as the main P adsorption mechanisms by the studied adsorbents.
HIGHLIGHTS
Phosphorus nano-adsorbents were derived from coal solid wastes.;
The FeCl3-modified adsorbents effectively removed the aquatic phosphorus.;
Adsorption process was pH-dependent and dominated by chemisorption.;
A sustainable approach in waste management and environmental protection was suggested.; |
| first_indexed | 2024-04-09T19:03:16Z |
| format | Article |
| id | doaj.art-1169b689f10942fe887217fad20f646a |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-09T19:03:16Z |
| publishDate | 2023-03-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-1169b689f10942fe887217fad20f646a2023-04-07T15:48:44ZengIWA PublishingWater Science and Technology0273-12231996-97322023-03-018761376139210.2166/wst.2023.068068Adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastesSomayeh Hosseinpour0Majid Hejazi-Mehrizi1Hassan Hashemipour2Mohammad Hady Farpoor3 Soil Science Department, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran Soil Science Department, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran Chemical Engineering Department, Faculty of Engineering, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran Soil Science Department, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran An invaluable utilization approach for industrial wastes is to employ them as effective adsorbents for environmental pollutants. This study aimed to investigate the phosphorus (P) adsorption behavior of coal wastes and zeolite in three forms of pristine powder (CP and ZP), nanoparticles (CNP and ZNP), and Fe (III)-modified nanoparticles (MCNP and MZNP). The adsorbents were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS) analyses. The effects of pH, initial P concentration, and contact time were studied under batch mode. Results showed an optimum pH range of 2–6 for the P adsorption process. The pseudo-second-order kinetic model and the Langmuir isotherm described the P adsorption data well. The P adsorption capacity of the studied adsorbents was enhanced after modifications. However, the coal-based modified adsorbents represented higher P adsorption performances rather than the zeolite ones. The maximum P adsorption capacity (Qmax) values were obtained as 0.36, 3.23, and 30.48 mg g−1 for CP, CNP, and MCNP, and 0.80, 2.84, and 6.99 mg g−1 for ZP, ZNP, and MZNP, respectively. The surface complexation, ligand exchange, and electrostatic attraction processes were identified as the main P adsorption mechanisms by the studied adsorbents. HIGHLIGHTS Phosphorus nano-adsorbents were derived from coal solid wastes.; The FeCl3-modified adsorbents effectively removed the aquatic phosphorus.; Adsorption process was pH-dependent and dominated by chemisorption.; A sustainable approach in waste management and environmental protection was suggested.;http://wst.iwaponline.com/content/87/6/1376chemical modificationeutrophicationisothermskineticsnanotechnologyphosphorus adsorption |
| spellingShingle | Somayeh Hosseinpour Majid Hejazi-Mehrizi Hassan Hashemipour Mohammad Hady Farpoor Adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastes Water Science and Technology chemical modification eutrophication isotherms kinetics nanotechnology phosphorus adsorption |
| title | Adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastes |
| title_full | Adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastes |
| title_fullStr | Adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastes |
| title_full_unstemmed | Adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastes |
| title_short | Adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastes |
| title_sort | adsorptive removal of phosphorus from aqueous solutions using natural and modified coal solid wastes |
| topic | chemical modification eutrophication isotherms kinetics nanotechnology phosphorus adsorption |
| url | http://wst.iwaponline.com/content/87/6/1376 |
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