The Removal of Phenol Through Adsorption onto Synthetic Calcium Phosphates – A Study Encompassing Analyses of Kinetics and Thermodynamics
The characteristics and suitability of hydroxyapatite (HAP), tricalcium apatite phosphate (PTCa), and octocalcium apatite phosphate (OCPa), which possess similar attributes to those of an ideal adsorbent, were investigated to determine their efficacy in phenol removal. The aim of this paper is to as...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Polish Society of Ecological Engineering (PTIE)
2024-04-01
|
| Series: | Ecological Engineering & Environmental Technology |
| Subjects: | |
| Online Access: | http://www.ecoeet.com/The-Removal-of-Phenol-Through-Adsorption-onto-Synthetic-Calcium-Phosphates-A-Study,184155,0,2.html |
| _version_ | 1797295849085075456 |
|---|---|
| author | Abdellatif El Bakri Hicham El Boujaady Nouhaila Ferraa Mounia Bennani-Ziatni |
| author_facet | Abdellatif El Bakri Hicham El Boujaady Nouhaila Ferraa Mounia Bennani-Ziatni |
| author_sort | Abdellatif El Bakri |
| collection | DOAJ |
| description | The characteristics and suitability of hydroxyapatite (HAP), tricalcium apatite phosphate (PTCa), and octocalcium apatite phosphate (OCPa), which possess similar attributes to those of an ideal adsorbent, were investigated to determine their efficacy in phenol removal. The aim of this paper is to assess the adsorption behavior of phenol on phosphates powders synthesized by the co-precipitation method at ambient temperature. Furthermore, the impact of initial phenol quantities and thermal conditions on the adsorption process was explored. X-ray diffraction analysis revealed the formation of HAP, PTCa, and OCPa structures under room temperature conditions. The sample morphologies were subjected to scrutiny utilizing MEB together with X-ray analysis. Additionally, chemical analysis revealed that Ca/P = 1.6, 1.5, and 1.33 for HAP, PTCa, and OCPa, respectively. The synthesized powders exhibited adsorption abilities of 2.86, 2.74, and 2.52 mg/g for HAP, PTCa, and OCPa, respectively, and reached equilibrium in approximately 80 minutes. The study revealed that the experimental data are appropriately represented by the Langmuir and Freundlich adsorption equations for HAP and PTCa, and Langmuir model in the case of OCPa, as well as by the pseudo-first-order and pseudo-second-order adsorption kinetics. Thermodynamic evaluations, including calculations of ΔG°, ΔH°, and ΔS°, were performed. The results indicated that the adsorption mechanisms exhibited physical characteristics, were thermally absorbing in the case of HAP and exothermic for the other two phosphates, PTCa and OCPa, and occurred spontaneously. |
| first_indexed | 2024-03-07T21:54:54Z |
| format | Article |
| id | doaj.art-07bb447ed799423b89ed3b75085e9223 |
| institution | Directory Open Access Journal |
| issn | 2719-7050 |
| language | English |
| last_indexed | 2024-03-07T21:54:54Z |
| publishDate | 2024-04-01 |
| publisher | Polish Society of Ecological Engineering (PTIE) |
| record_format | Article |
| series | Ecological Engineering & Environmental Technology |
| spelling | doaj.art-07bb447ed799423b89ed3b75085e92232024-02-24T16:14:08ZengPolish Society of Ecological Engineering (PTIE)Ecological Engineering & Environmental Technology2719-70502024-04-0125430131510.12912/27197050/184155184155The Removal of Phenol Through Adsorption onto Synthetic Calcium Phosphates – A Study Encompassing Analyses of Kinetics and ThermodynamicsAbdellatif El Bakri0https://orcid.org/0009-0004-7962-2845Hicham El Boujaady1https://orcid.org/0000-0001-9187-9257Nouhaila Ferraa2https://orcid.org/0000-0003-1817-7798Mounia Bennani-Ziatni3https://orcid.org/0009-0001-8443-8506Laboratory of OCCE, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, PB. 133-14050 Kenitra, MoroccoLaboratory of OCCE, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, PB. 133-14050 Kenitra, MoroccoLaboratory of OCCE, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, PB. 133-14050 Kenitra, MoroccoLaboratory of OCCE, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, PB. 133-14050 Kenitra, MoroccoThe characteristics and suitability of hydroxyapatite (HAP), tricalcium apatite phosphate (PTCa), and octocalcium apatite phosphate (OCPa), which possess similar attributes to those of an ideal adsorbent, were investigated to determine their efficacy in phenol removal. The aim of this paper is to assess the adsorption behavior of phenol on phosphates powders synthesized by the co-precipitation method at ambient temperature. Furthermore, the impact of initial phenol quantities and thermal conditions on the adsorption process was explored. X-ray diffraction analysis revealed the formation of HAP, PTCa, and OCPa structures under room temperature conditions. The sample morphologies were subjected to scrutiny utilizing MEB together with X-ray analysis. Additionally, chemical analysis revealed that Ca/P = 1.6, 1.5, and 1.33 for HAP, PTCa, and OCPa, respectively. The synthesized powders exhibited adsorption abilities of 2.86, 2.74, and 2.52 mg/g for HAP, PTCa, and OCPa, respectively, and reached equilibrium in approximately 80 minutes. The study revealed that the experimental data are appropriately represented by the Langmuir and Freundlich adsorption equations for HAP and PTCa, and Langmuir model in the case of OCPa, as well as by the pseudo-first-order and pseudo-second-order adsorption kinetics. Thermodynamic evaluations, including calculations of ΔG°, ΔH°, and ΔS°, were performed. The results indicated that the adsorption mechanisms exhibited physical characteristics, were thermally absorbing in the case of HAP and exothermic for the other two phosphates, PTCa and OCPa, and occurred spontaneously.http://www.ecoeet.com/The-Removal-of-Phenol-Through-Adsorption-onto-Synthetic-Calcium-Phosphates-A-Study,184155,0,2.htmlphenolthermodynamicshapocpaptcaadsorption equilibriumreaction rate |
| spellingShingle | Abdellatif El Bakri Hicham El Boujaady Nouhaila Ferraa Mounia Bennani-Ziatni The Removal of Phenol Through Adsorption onto Synthetic Calcium Phosphates – A Study Encompassing Analyses of Kinetics and Thermodynamics Ecological Engineering & Environmental Technology phenol thermodynamics hap ocpa ptca adsorption equilibrium reaction rate |
| title | The Removal of Phenol Through Adsorption onto Synthetic Calcium Phosphates – A Study Encompassing Analyses of Kinetics and Thermodynamics |
| title_full | The Removal of Phenol Through Adsorption onto Synthetic Calcium Phosphates – A Study Encompassing Analyses of Kinetics and Thermodynamics |
| title_fullStr | The Removal of Phenol Through Adsorption onto Synthetic Calcium Phosphates – A Study Encompassing Analyses of Kinetics and Thermodynamics |
| title_full_unstemmed | The Removal of Phenol Through Adsorption onto Synthetic Calcium Phosphates – A Study Encompassing Analyses of Kinetics and Thermodynamics |
| title_short | The Removal of Phenol Through Adsorption onto Synthetic Calcium Phosphates – A Study Encompassing Analyses of Kinetics and Thermodynamics |
| title_sort | removal of phenol through adsorption onto synthetic calcium phosphates a study encompassing analyses of kinetics and thermodynamics |
| topic | phenol thermodynamics hap ocpa ptca adsorption equilibrium reaction rate |
| url | http://www.ecoeet.com/The-Removal-of-Phenol-Through-Adsorption-onto-Synthetic-Calcium-Phosphates-A-Study,184155,0,2.html |
| work_keys_str_mv | AT abdellatifelbakri theremovalofphenolthroughadsorptionontosyntheticcalciumphosphatesastudyencompassinganalysesofkineticsandthermodynamics AT hichamelboujaady theremovalofphenolthroughadsorptionontosyntheticcalciumphosphatesastudyencompassinganalysesofkineticsandthermodynamics AT nouhailaferraa theremovalofphenolthroughadsorptionontosyntheticcalciumphosphatesastudyencompassinganalysesofkineticsandthermodynamics AT mouniabennaniziatni theremovalofphenolthroughadsorptionontosyntheticcalciumphosphatesastudyencompassinganalysesofkineticsandthermodynamics AT abdellatifelbakri removalofphenolthroughadsorptionontosyntheticcalciumphosphatesastudyencompassinganalysesofkineticsandthermodynamics AT hichamelboujaady removalofphenolthroughadsorptionontosyntheticcalciumphosphatesastudyencompassinganalysesofkineticsandthermodynamics AT nouhailaferraa removalofphenolthroughadsorptionontosyntheticcalciumphosphatesastudyencompassinganalysesofkineticsandthermodynamics AT mouniabennaniziatni removalofphenolthroughadsorptionontosyntheticcalciumphosphatesastudyencompassinganalysesofkineticsandthermodynamics |