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- Title
An Analysis of the Factors Influencing Cadmium Removal in Aquatic Environments by Chlorella vulgaris -Derived Solids.
- Authors
Sufian, Jafar; Babaakbari Sari, Mohammad; Marchelli, Filippo; Fiori, Luca; Avanes, Armen; Moradi, Salahedin
- Abstract
Chlorella vulgaris 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−1, an initial concentration of Cd solution of 30 mg L−1, 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.
- Subjects
CHLORELLA vulgaris; FACTOR analysis; CADMIUM; STRUCTURAL equation modeling; ADSORPTION isotherms; ENVIRONMENTAL remediation
- Publication
C, 2024, Vol 10, Issue 1, p2
- ISSN
2311-5629
- Publication type
Article
- DOI
10.3390/c10010002