Cassava Chaff Ash as Potential Adsorbent for Arsenic Ions Removal from Aqueous Solution: Evaluations of Isotherms, Kinetics, and Thermodynamic Properties
Cassava chaff in its raw and heat-treated (ash) forms was studied as an adsorbent for the removal of arsenic (As(V)) from aqueous solutions in a batch process. The findings indicated that pH significantly influenced As adsorption efficiency on raw cassava chaff, with optimal adsorption (78.6%) obser...
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North Carolina State University
2025-03-01
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| Online Access: | https://ojs.bioresources.com/index.php/BRJ/article/view/24233 |
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| author | Ali El-Rayyes Arogundade Ibrahim Ezekiel Folorunsho Sodiya Edwin Andrew Ofudje Akeem Adesina Bamgbade Moamen S. Refat Amnah Mohammed Alsuhaibani James Asamu Akande |
| author_facet | Ali El-Rayyes Arogundade Ibrahim Ezekiel Folorunsho Sodiya Edwin Andrew Ofudje Akeem Adesina Bamgbade Moamen S. Refat Amnah Mohammed Alsuhaibani James Asamu Akande |
| author_sort | Ali El-Rayyes |
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| description | Cassava chaff in its raw and heat-treated (ash) forms was studied as an adsorbent for the removal of arsenic (As(V)) from aqueous solutions in a batch process. The findings indicated that pH significantly influenced As adsorption efficiency on raw cassava chaff, with optimal adsorption (78.6%) observed at a pH of approximately 4.5. Adsorption isotherm modeling revealed that the Langmuir model was more applicable to heat-treated cassava chaff, with maximum adsorption capacity of 101 mg/g, whereas the Freundlich model better described As adsorption on raw cassava chaff with maximum adsorption capacity of 82.2 mg/g. Kinetic studies showed that the pseudo-second-order model accurately represented As adsorption onto raw cassava chaff, while the pseudo-first-order model best fit the kinetics for heat-treated cassava chaff. The enthalpy change for heat-treated cassava chaff and raw sample were +35.3 kJ/mol and +55.3 kJ/mol, respectively, suggesting the process to be endothermic. Information from Fourier transform infrared analysis revealed that the adsorbent was made up of cellulose and hemicellulose materials. Functional groups including OH, C=C, C=O, and C-O may be involved in the uptake of As(V) ions. This work highlights heat-treated cassava chaff as a promising, robust solution for As-contaminated water treatment. |
| format | Article |
| id | doaj-art-53d6e207c8cb49568366442fbe9ceff8 |
| institution | DOAJ |
| issn | 1930-2126 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj-art-53d6e207c8cb49568366442fbe9ceff82025-08-20T03:11:51ZengNorth Carolina State UniversityBioResources1930-21262025-03-01202338634142497Cassava Chaff Ash as Potential Adsorbent for Arsenic Ions Removal from Aqueous Solution: Evaluations of Isotherms, Kinetics, and Thermodynamic PropertiesAli El-Rayyes0Arogundade Ibrahim1Ezekiel Folorunsho Sodiya2Edwin Andrew Ofudje3Akeem Adesina Bamgbade4Moamen S. Refat5Amnah Mohammed Alsuhaibani6James Asamu Akande7Center for Scientific Research and Entrepreneurship, Northern Border University, Arar 73213, Saudi ArabiaDepartment of Chemical Sciences, Mountain Top University, Ogun State, NigeriaDepartment of Chemical Sciences, Mountain Top University, Ogun State, NigeriaDepartment of Chemical Sciences, Mountain Top University, Ogun State, Nigeria Department of Physical Sport Sciences, College of Sport Sciences & Physical Activity, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi ArabiaDepartment of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi ArabiaDepartment of Sports Health, College of Sport Sciences & Physical Activity, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi ArabiaDepartment of Chemistry and Biochemistry, Caleb University, Imota, Lagos State, NigeriaCassava chaff in its raw and heat-treated (ash) forms was studied as an adsorbent for the removal of arsenic (As(V)) from aqueous solutions in a batch process. The findings indicated that pH significantly influenced As adsorption efficiency on raw cassava chaff, with optimal adsorption (78.6%) observed at a pH of approximately 4.5. Adsorption isotherm modeling revealed that the Langmuir model was more applicable to heat-treated cassava chaff, with maximum adsorption capacity of 101 mg/g, whereas the Freundlich model better described As adsorption on raw cassava chaff with maximum adsorption capacity of 82.2 mg/g. Kinetic studies showed that the pseudo-second-order model accurately represented As adsorption onto raw cassava chaff, while the pseudo-first-order model best fit the kinetics for heat-treated cassava chaff. The enthalpy change for heat-treated cassava chaff and raw sample were +35.3 kJ/mol and +55.3 kJ/mol, respectively, suggesting the process to be endothermic. Information from Fourier transform infrared analysis revealed that the adsorbent was made up of cellulose and hemicellulose materials. Functional groups including OH, C=C, C=O, and C-O may be involved in the uptake of As(V) ions. This work highlights heat-treated cassava chaff as a promising, robust solution for As-contaminated water treatment.https://ojs.bioresources.com/index.php/BRJ/article/view/24233arsenic ionscassava chaffisothermskineticspollution |
| spellingShingle | Ali El-Rayyes Arogundade Ibrahim Ezekiel Folorunsho Sodiya Edwin Andrew Ofudje Akeem Adesina Bamgbade Moamen S. Refat Amnah Mohammed Alsuhaibani James Asamu Akande Cassava Chaff Ash as Potential Adsorbent for Arsenic Ions Removal from Aqueous Solution: Evaluations of Isotherms, Kinetics, and Thermodynamic Properties BioResources arsenic ions cassava chaff isotherms kinetics pollution |
| title | Cassava Chaff Ash as Potential Adsorbent for Arsenic Ions Removal from Aqueous Solution: Evaluations of Isotherms, Kinetics, and Thermodynamic Properties |
| title_full | Cassava Chaff Ash as Potential Adsorbent for Arsenic Ions Removal from Aqueous Solution: Evaluations of Isotherms, Kinetics, and Thermodynamic Properties |
| title_fullStr | Cassava Chaff Ash as Potential Adsorbent for Arsenic Ions Removal from Aqueous Solution: Evaluations of Isotherms, Kinetics, and Thermodynamic Properties |
| title_full_unstemmed | Cassava Chaff Ash as Potential Adsorbent for Arsenic Ions Removal from Aqueous Solution: Evaluations of Isotherms, Kinetics, and Thermodynamic Properties |
| title_short | Cassava Chaff Ash as Potential Adsorbent for Arsenic Ions Removal from Aqueous Solution: Evaluations of Isotherms, Kinetics, and Thermodynamic Properties |
| title_sort | cassava chaff ash as potential adsorbent for arsenic ions removal from aqueous solution evaluations of isotherms kinetics and thermodynamic properties |
| topic | arsenic ions cassava chaff isotherms kinetics pollution |
| url | https://ojs.bioresources.com/index.php/BRJ/article/view/24233 |
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