Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite
Arsenate As(V) is a toxic contaminant commonly found in aquifers and groundwater that poses significant risks to human health. The effective treatment of arseniccontaminated water is therefore crucial for safeguarding public health. This study investigates removing As(V) using iron oxide-coated igni...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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MDPI
2025
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| Acceso en línea: | http://hdl.handle.net/20.500.12955/2702 |
| _version_ | 1855490593274200064 |
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| author | Velarde Apaza, Lelie Diana Chávez Collantes, Azucena Solórzano Acosta, Richard Andi Cuevas Gimenez, Juan Pablo Villanueva Salas, José Antonio |
| author_browse | Chávez Collantes, Azucena Cuevas Gimenez, Juan Pablo Solórzano Acosta, Richard Andi Velarde Apaza, Lelie Diana Villanueva Salas, José Antonio |
| author_facet | Velarde Apaza, Lelie Diana Chávez Collantes, Azucena Solórzano Acosta, Richard Andi Cuevas Gimenez, Juan Pablo Villanueva Salas, José Antonio |
| author_sort | Velarde Apaza, Lelie Diana |
| collection | Repositorio INIA |
| description | Arsenate As(V) is a toxic contaminant commonly found in aquifers and groundwater that poses significant risks to human health. The effective treatment of arseniccontaminated water is therefore crucial for safeguarding public health. This study investigates removing As(V) using iron oxide-coated ignimbrite in batch experiments by varying the adsorbent dosage, initial As(V) concentration, contact time, and system temperature. The adsorption experiments revealed that the Langmuir isotherm model better fit the data (R2 = 0.99) than the Freundlich model (R2 = 0.73). According to the Langmuir model, the maximum adsorption capacity of As(V) on the iron oxide-coated ignimbrite was 4.84 mg·g −1 ± 0.12 mg·g −1 of As(V), with a standard deviation of ±0.05 mg·g −1 after 2 h of exposure with 0.15 g/50 mL iron oxide-coated ignimbrite adsorbent concentration. In the kinetic analysis, the pseudo-first-order model best described the adsorption process at 283 K, 293 K, and 303 K, although the pseudo-second-order model also showed an adequate fit, particularly at 293 K. This indicates that, while the pseudo-first-order model is generally more suitable under these conditions, the pseudo-second-order model may also apply under certain circumstances. The results of the batch experiments demonstrate that iron oxide-coated ignimbrite is a promising adsorbent for effectively reducing high concentrations of As(V) in contaminated water |
| format | Artículo |
| id | INIA2702 |
| institution | Institucional Nacional de Innovación Agraria |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | INIA27022025-09-18T20:29:50Z Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite Velarde Apaza, Lelie Diana Chávez Collantes, Azucena Solórzano Acosta, Richard Andi Cuevas Gimenez, Juan Pablo Villanueva Salas, José Antonio Arsenic(V) ignimbrite iron oxide metal removal adsorption underground water. https://purl.org/pe-repo/ocde/ford#4.01.01 https://purl.org/pe-repo/ocde/ford#4.05.00 Arsenic Arsenate As(V) is a toxic contaminant commonly found in aquifers and groundwater that poses significant risks to human health. The effective treatment of arseniccontaminated water is therefore crucial for safeguarding public health. This study investigates removing As(V) using iron oxide-coated ignimbrite in batch experiments by varying the adsorbent dosage, initial As(V) concentration, contact time, and system temperature. The adsorption experiments revealed that the Langmuir isotherm model better fit the data (R2 = 0.99) than the Freundlich model (R2 = 0.73). According to the Langmuir model, the maximum adsorption capacity of As(V) on the iron oxide-coated ignimbrite was 4.84 mg·g −1 ± 0.12 mg·g −1 of As(V), with a standard deviation of ±0.05 mg·g −1 after 2 h of exposure with 0.15 g/50 mL iron oxide-coated ignimbrite adsorbent concentration. In the kinetic analysis, the pseudo-first-order model best described the adsorption process at 283 K, 293 K, and 303 K, although the pseudo-second-order model also showed an adequate fit, particularly at 293 K. This indicates that, while the pseudo-first-order model is generally more suitable under these conditions, the pseudo-second-order model may also apply under certain circumstances. The results of the batch experiments demonstrate that iron oxide-coated ignimbrite is a promising adsorbent for effectively reducing high concentrations of As(V) in contaminated water 2025-04-01T20:37:38Z 2025-04-01T20:37:38Z 2024-12-28 info:eu-repo/semantics/article Velarde-Apaza, L.D., Chávez-Collantes, A., Solorzano-Acosta, R., Cuevas, J.-P., Villanueva-Salas, J.A. Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite. Water 2025, 17, 53. DOI: 10.3390/w17010053. http://hdl.handle.net/20.500.12955/2702 10.3390/w17010053 eng 2073-4441 Water 2025 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ application/pdf application/pdf MDPI IQ Instituto Nacional de Innovación Agraria Repositorio Institucional - INIA |
| spellingShingle | Arsenic(V) ignimbrite iron oxide metal removal adsorption underground water. https://purl.org/pe-repo/ocde/ford#4.01.01 https://purl.org/pe-repo/ocde/ford#4.05.00 Arsenic Velarde Apaza, Lelie Diana Chávez Collantes, Azucena Solórzano Acosta, Richard Andi Cuevas Gimenez, Juan Pablo Villanueva Salas, José Antonio Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite |
| title | Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite |
| title_full | Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite |
| title_fullStr | Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite |
| title_full_unstemmed | Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite |
| title_short | Aqueous-Medium Arsenic(V) Removal Using Iron Oxide-Coated Ignimbrite |
| title_sort | aqueous medium arsenic v removal using iron oxide coated ignimbrite |
| topic | Arsenic(V) ignimbrite iron oxide metal removal adsorption underground water. https://purl.org/pe-repo/ocde/ford#4.01.01 https://purl.org/pe-repo/ocde/ford#4.05.00 Arsenic |
| url | http://hdl.handle.net/20.500.12955/2702 |
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