Characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environments
The expansion of economic and societal activities has resulted in higher concentrations of nitrate and phosphate in wastewater. This investigation examines the potential use of fly ash sourced from thermal power plants as a adsorbent to confiscate nitrate (NO3-) and phosphate (PO43-) from such wast...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Action for Sustainable Efficacious Development and Awareness
2025-06-01
|
| Series: | Environment Conservation Journal |
| Subjects: | |
| Online Access: | https://journal.environcj.in/index.php/ecj/article/view/3117 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849686077340647424 |
|---|---|
| author | Renu Bala Asha Singh Dinesh Arora Rajesh Dhankhar Kiran Bala Sunil Kumar Chhikara |
| author_facet | Renu Bala Asha Singh Dinesh Arora Rajesh Dhankhar Kiran Bala Sunil Kumar Chhikara |
| author_sort | Renu Bala |
| collection | DOAJ |
| description |
The expansion of economic and societal activities has resulted in higher concentrations of nitrate and phosphate in wastewater. This investigation examines the potential use of fly ash sourced from thermal power plants as a adsorbent to confiscate nitrate (NO3-) and phosphate (PO43-) from such wastewater. Fly ash was treated with distilled water to neutralize it before being used as an adsorbent. Batch studies were carried out to evaluate different factors impact the adsorption of nitrate and phosphate. The adsorbent was characterized using Zeta Potential, FE-SEM, EDAX, and FTIR techniques. Optimal adsorption occurred at pH 6.0 for nitrate and pH 7.0 for phosphate, with an adsorbent amount of 0.25 g, initial NO3- and PO43- ion concentrations of 20 mg/l, and a temperature of 25 ℃ with a constant stirring of 100 rpm. The maximum sorption capacities were found to be 2.422 mg/g for NO3- and 3.402 mg/g for PO43- ions. The Freundlich isotherm model offered a more accurate representation of the adsorption data, while pseudo second-order kinetics indicated a well-defined adsorption mechanism with high R2 values of 0.996 & 0.9995 for nitrate and phosphate, correspondingly. Thermodynamic analysis suggested that the adsorption process was found to be exothermic and non-spontaneous at higher temperatures.
|
| format | Article |
| id | doaj-art-ea8bb22e709b4b7fac715a29dc948cc7 |
| institution | DOAJ |
| issn | 0972-3099 2278-5124 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Action for Sustainable Efficacious Development and Awareness |
| record_format | Article |
| series | Environment Conservation Journal |
| spelling | doaj-art-ea8bb22e709b4b7fac715a29dc948cc72025-08-20T03:22:52ZengAction for Sustainable Efficacious Development and AwarenessEnvironment Conservation Journal0972-30992278-51242025-06-0126210.36953/ECJ.31173008Characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environmentsRenu Bala0Asha Singh1Dinesh Arora2Rajesh Dhankhar3Kiran Bala4Sunil Kumar Chhikara5University Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak, Haryana, IndiaDepartment of Environmental Science, Maharshi Dayanand University, Rohtak, Haryana, IndiaDepartment of Environmental Science, Maharshi Dayanand University, Rohtak, Haryana, IndiaDepartment of Environmental Science, Maharshi Dayanand University, Rohtak, Haryana, IndiaDepartment of Geography, KLP College, Rewari, Haryana, IndiaUniversity Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak, Haryana, India The expansion of economic and societal activities has resulted in higher concentrations of nitrate and phosphate in wastewater. This investigation examines the potential use of fly ash sourced from thermal power plants as a adsorbent to confiscate nitrate (NO3-) and phosphate (PO43-) from such wastewater. Fly ash was treated with distilled water to neutralize it before being used as an adsorbent. Batch studies were carried out to evaluate different factors impact the adsorption of nitrate and phosphate. The adsorbent was characterized using Zeta Potential, FE-SEM, EDAX, and FTIR techniques. Optimal adsorption occurred at pH 6.0 for nitrate and pH 7.0 for phosphate, with an adsorbent amount of 0.25 g, initial NO3- and PO43- ion concentrations of 20 mg/l, and a temperature of 25 ℃ with a constant stirring of 100 rpm. The maximum sorption capacities were found to be 2.422 mg/g for NO3- and 3.402 mg/g for PO43- ions. The Freundlich isotherm model offered a more accurate representation of the adsorption data, while pseudo second-order kinetics indicated a well-defined adsorption mechanism with high R2 values of 0.996 & 0.9995 for nitrate and phosphate, correspondingly. Thermodynamic analysis suggested that the adsorption process was found to be exothermic and non-spontaneous at higher temperatures. https://journal.environcj.in/index.php/ecj/article/view/3117AdsorbentEutrophication IsothermsKinetics Thermodynamics |
| spellingShingle | Renu Bala Asha Singh Dinesh Arora Rajesh Dhankhar Kiran Bala Sunil Kumar Chhikara Characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environments Environment Conservation Journal Adsorbent Eutrophication Isotherms Kinetics Thermodynamics |
| title | Characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environments |
| title_full | Characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environments |
| title_fullStr | Characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environments |
| title_full_unstemmed | Characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environments |
| title_short | Characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environments |
| title_sort | characterization and performance of fly ash in the adsorption of nitrate and phosphate in aquatic environments |
| topic | Adsorbent Eutrophication Isotherms Kinetics Thermodynamics |
| url | https://journal.environcj.in/index.php/ecj/article/view/3117 |
| work_keys_str_mv | AT renubala characterizationandperformanceofflyashintheadsorptionofnitrateandphosphateinaquaticenvironments AT ashasingh characterizationandperformanceofflyashintheadsorptionofnitrateandphosphateinaquaticenvironments AT dinesharora characterizationandperformanceofflyashintheadsorptionofnitrateandphosphateinaquaticenvironments AT rajeshdhankhar characterizationandperformanceofflyashintheadsorptionofnitrateandphosphateinaquaticenvironments AT kiranbala characterizationandperformanceofflyashintheadsorptionofnitrateandphosphateinaquaticenvironments AT sunilkumarchhikara characterizationandperformanceofflyashintheadsorptionofnitrateandphosphateinaquaticenvironments |