An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by <i>Chlorella vulgaris</i>-Derived Solids
<i>Chlorella vulgaris</i> is an inexpensive microalga that could be employed for environmental remediation, but further investigations are needed to assess its suitability and optimal treatment methodology. With this aim in mind, this study focused on the raw biomass and the biochar and...
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MDPI AG
2023-12-01
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| author | Jafar Sufian Mohammad Babaakbari Sari Filippo Marchelli Luca Fiori Armen Avanes Salahedin Moradi |
| author_facet | Jafar Sufian Mohammad Babaakbari Sari Filippo Marchelli Luca Fiori Armen Avanes Salahedin Moradi |
| author_sort | Jafar Sufian |
| collection | DOAJ |
| description | <i>Chlorella vulgaris</i> is an inexpensive microalga that could be employed for environmental remediation, but further investigations are needed to assess its suitability and optimal treatment methodology. With this aim in mind, this study focused on the raw biomass and the biochar and hydrochar obtained from it, analyzing their physicochemical properties and testing them to capture cadmium from an aqueous environment. The adsorption/absorption tests assessed the effect of adsorbent dosage, pH, Cd concentration, and contact time, and the results were analyzed through a structural equation model. Biochar and hydrochar performed similarly and better than the raw biomass, with the highest Cd removal observed at an adsorbent dosage of 0.8 g L<sup>−1</sup>, an initial concentration of Cd solution of 30 mg L<sup>−1</sup>, a pH of 6, and a contact time of 30 min. The adsorption isotherm data for Cd could be well-described by the Langmuir and Temkin models. The results from the structural equation modeling revealed that the variables material type, dosage, and concentration all contributed to Cd removal in water, with time mediating these effects. |
| first_indexed | 2024-04-24T18:27:19Z |
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| id | doaj.art-d25e4cd8607349d3b6edfd35e649d0b8 |
| institution | Directory Open Access Journal |
| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-04-24T18:27:19Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | C |
| spelling | doaj.art-d25e4cd8607349d3b6edfd35e649d0b82024-03-27T13:30:13ZengMDPI AGC2311-56292023-12-01101210.3390/c10010002An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by <i>Chlorella vulgaris</i>-Derived SolidsJafar Sufian0Mohammad Babaakbari Sari1Filippo Marchelli2Luca Fiori3Armen Avanes4Salahedin Moradi5Department of Soil Sciences, University of Zanjan, Zanjan 45371-38791, IranDepartment of Soil Sciences, University of Zanjan, Zanjan 45371-38791, IranDepartment of Civil, Environmental and Mechanical Engineering, University of Trento, 38123 Trento, ItalyDepartment of Civil, Environmental and Mechanical Engineering, University of Trento, 38123 Trento, ItalyDepartment of Chemistry, Faculty of Science, University of Maragheh, Maragheh 83111-55181, IranDepartment of Agriculture, Payame Noor University, Tehran 19395-4697, Iran<i>Chlorella vulgaris</i> is an inexpensive microalga that could be employed for environmental remediation, but further investigations are needed to assess its suitability and optimal treatment methodology. With this aim in mind, this study focused on the raw biomass and the biochar and hydrochar obtained from it, analyzing their physicochemical properties and testing them to capture cadmium from an aqueous environment. The adsorption/absorption tests assessed the effect of adsorbent dosage, pH, Cd concentration, and contact time, and the results were analyzed through a structural equation model. Biochar and hydrochar performed similarly and better than the raw biomass, with the highest Cd removal observed at an adsorbent dosage of 0.8 g L<sup>−1</sup>, an initial concentration of Cd solution of 30 mg L<sup>−1</sup>, a pH of 6, and a contact time of 30 min. The adsorption isotherm data for Cd could be well-described by the Langmuir and Temkin models. The results from the structural equation modeling revealed that the variables material type, dosage, and concentration all contributed to Cd removal in water, with time mediating these effects.https://www.mdpi.com/2311-5629/10/1/2microalgaeadsorption isothermadsorptioncadmiumwater remediation |
| spellingShingle | Jafar Sufian Mohammad Babaakbari Sari Filippo Marchelli Luca Fiori Armen Avanes Salahedin Moradi An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by <i>Chlorella vulgaris</i>-Derived Solids C microalgae adsorption isotherm adsorption cadmium water remediation |
| title | An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by <i>Chlorella vulgaris</i>-Derived Solids |
| title_full | An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by <i>Chlorella vulgaris</i>-Derived Solids |
| title_fullStr | An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by <i>Chlorella vulgaris</i>-Derived Solids |
| title_full_unstemmed | An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by <i>Chlorella vulgaris</i>-Derived Solids |
| title_short | An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by <i>Chlorella vulgaris</i>-Derived Solids |
| title_sort | analysis of the factors influencing cadmium removal in aquatic environments by i chlorella vulgaris i derived solids |
| topic | microalgae adsorption isotherm adsorption cadmium water remediation |
| url | https://www.mdpi.com/2311-5629/10/1/2 |
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