Bone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solution
Abstract High fluoride concentrations in groundwater have attracted great concern worldwide because many people are afflicted by fluorosis due to water consumption. In this work, the fluoride adsorption from water onto bone char (BC) modified with iron sulfate (BCM) was studied as an option for elim...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2023-02-01
|
| Series: | Sustainable Environment Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s42834-023-00164-z |
| _version_ | 1828035015510851584 |
|---|---|
| author | Damarys Haydee Carrales-Alvarado Brenda Azharel Jiménez-López Roberto Leyva-Ramos Nahum Andrés Medellín-Castillo Esmeralda Mendoza-Mendoza Carolina Vázquez-Mendoza Diana Elizabeth Villela-Martínez |
| author_facet | Damarys Haydee Carrales-Alvarado Brenda Azharel Jiménez-López Roberto Leyva-Ramos Nahum Andrés Medellín-Castillo Esmeralda Mendoza-Mendoza Carolina Vázquez-Mendoza Diana Elizabeth Villela-Martínez |
| author_sort | Damarys Haydee Carrales-Alvarado |
| collection | DOAJ |
| description | Abstract High fluoride concentrations in groundwater have attracted great concern worldwide because many people are afflicted by fluorosis due to water consumption. In this work, the fluoride adsorption from water onto bone char (BC) modified with iron sulfate (BCM) was studied as an option for eliminating fluoride from drinking water. The experimental data for the adsorption equilibrium of fluoride on BCMs were procured in a batch adsorber. The synthesis conditions of BCMs were optimized for improving the adsorption capacity of BCMs, and the optimal BCM was designated as BCM2. The BCMs were characterized by different analytical techniques, the BCMs surface exhibited an irregular morphology and the chemical nature was basic, and the BCMs were mesoporous materials. The Langmuir isotherm satisfactorily interpreted the experimental data of the fluoride adsorption isotherms on BCMs. The basic sites of BC and BCMs were quantified and identified in this work. The main adsorption mechanism of fluoride on the BCMs was the electrostatic attraction between the fluoride and the basic sites of BCMs, and the adsorption capacities of BC and BCMs towards fluoride increased almost linearly with the concentration of basic sites so that the enhancement of the adsorption capacity of BCMs was attributed to the increase of basic sites during the modification. Furthermore, the BCM2 adsorption capacity was lessened by incrementing the pH from 5 to 9, and this behavior was ascribed to the reduction of the electrostatic attraction interactions between the BCM2 surface basic sites and fluoride in the solution. The adsorption process was endothermic because the adsorption capacities of BC and BCM2 toward fluoride were raised by incrementing the solution temperature from 15 to 35 °C. The BCM2 presented a high capacity for adsorbing fluoride of 14.4 mg g−1 at 25 °C and a pH of 5. |
| first_indexed | 2024-04-10T15:40:37Z |
| format | Article |
| id | doaj.art-19a2f17507e3403e9f6021e3d0b7ecbd |
| institution | Directory Open Access Journal |
| issn | 2468-2039 |
| language | English |
| last_indexed | 2024-04-10T15:40:37Z |
| publishDate | 2023-02-01 |
| publisher | BMC |
| record_format | Article |
| series | Sustainable Environment Research |
| spelling | doaj.art-19a2f17507e3403e9f6021e3d0b7ecbd2023-02-12T12:23:53ZengBMCSustainable Environment Research2468-20392023-02-0133111210.1186/s42834-023-00164-zBone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solutionDamarys Haydee Carrales-Alvarado0Brenda Azharel Jiménez-López1Roberto Leyva-Ramos2Nahum Andrés Medellín-Castillo3Esmeralda Mendoza-Mendoza4Carolina Vázquez-Mendoza5Diana Elizabeth Villela-Martínez6Center for Research and Graduate Studies, School of Chemistry, Autonomous University of San Luis PotosiCenter for Research and Graduate Studies, School of Chemistry, Autonomous University of San Luis PotosiCenter for Research and Graduate Studies, School of Chemistry, Autonomous University of San Luis PotosiSchool of Engineering, Autonomous University of San Luis PotosiCenter for Research and Graduate Studies, School of Chemistry, Autonomous University of San Luis PotosiCenter for Research and Graduate Studies, School of Chemistry, Autonomous University of San Luis PotosiCenter for Research and Graduate Studies, School of Chemistry, Autonomous University of San Luis PotosiAbstract High fluoride concentrations in groundwater have attracted great concern worldwide because many people are afflicted by fluorosis due to water consumption. In this work, the fluoride adsorption from water onto bone char (BC) modified with iron sulfate (BCM) was studied as an option for eliminating fluoride from drinking water. The experimental data for the adsorption equilibrium of fluoride on BCMs were procured in a batch adsorber. The synthesis conditions of BCMs were optimized for improving the adsorption capacity of BCMs, and the optimal BCM was designated as BCM2. The BCMs were characterized by different analytical techniques, the BCMs surface exhibited an irregular morphology and the chemical nature was basic, and the BCMs were mesoporous materials. The Langmuir isotherm satisfactorily interpreted the experimental data of the fluoride adsorption isotherms on BCMs. The basic sites of BC and BCMs were quantified and identified in this work. The main adsorption mechanism of fluoride on the BCMs was the electrostatic attraction between the fluoride and the basic sites of BCMs, and the adsorption capacities of BC and BCMs towards fluoride increased almost linearly with the concentration of basic sites so that the enhancement of the adsorption capacity of BCMs was attributed to the increase of basic sites during the modification. Furthermore, the BCM2 adsorption capacity was lessened by incrementing the pH from 5 to 9, and this behavior was ascribed to the reduction of the electrostatic attraction interactions between the BCM2 surface basic sites and fluoride in the solution. The adsorption process was endothermic because the adsorption capacities of BC and BCM2 toward fluoride were raised by incrementing the solution temperature from 15 to 35 °C. The BCM2 presented a high capacity for adsorbing fluoride of 14.4 mg g−1 at 25 °C and a pH of 5.https://doi.org/10.1186/s42834-023-00164-zAdsorptionBone charFluorideIron nanoparticlesDrinking water |
| spellingShingle | Damarys Haydee Carrales-Alvarado Brenda Azharel Jiménez-López Roberto Leyva-Ramos Nahum Andrés Medellín-Castillo Esmeralda Mendoza-Mendoza Carolina Vázquez-Mendoza Diana Elizabeth Villela-Martínez Bone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solution Sustainable Environment Research Adsorption Bone char Fluoride Iron nanoparticles Drinking water |
| title | Bone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solution |
| title_full | Bone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solution |
| title_fullStr | Bone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solution |
| title_full_unstemmed | Bone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solution |
| title_short | Bone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solution |
| title_sort | bone char modification by iron to improve its capacity for adsorbing fluoride from an aqueous solution |
| topic | Adsorption Bone char Fluoride Iron nanoparticles Drinking water |
| url | https://doi.org/10.1186/s42834-023-00164-z |
| work_keys_str_mv | AT damaryshaydeecarralesalvarado bonecharmodificationbyirontoimproveitscapacityforadsorbingfluoridefromanaqueoussolution AT brendaazhareljimenezlopez bonecharmodificationbyirontoimproveitscapacityforadsorbingfluoridefromanaqueoussolution AT robertoleyvaramos bonecharmodificationbyirontoimproveitscapacityforadsorbingfluoridefromanaqueoussolution AT nahumandresmedellincastillo bonecharmodificationbyirontoimproveitscapacityforadsorbingfluoridefromanaqueoussolution AT esmeraldamendozamendoza bonecharmodificationbyirontoimproveitscapacityforadsorbingfluoridefromanaqueoussolution AT carolinavazquezmendoza bonecharmodificationbyirontoimproveitscapacityforadsorbingfluoridefromanaqueoussolution AT dianaelizabethvillelamartinez bonecharmodificationbyirontoimproveitscapacityforadsorbingfluoridefromanaqueoussolution |