Kinetic and equilibrium modeling of chromium (VI) biosorption on fresh and spent Spirulina platensis/Chlorella vulgaris biomass
Abstract
Biosorption of chromium (VI) was studied using both fresh and spent algal biomass of Spirulina platensis and Chlorella vulgaris. Both showed comparable behavior suggesting that biosorption is primarily a surface phenomenon. Biosorption rate was very fast during the first five minutes, in which almost 50% of the chromium (VI) was adsorbed. Two step kinetic model was proposed for biosorption. Equilibrium data obeyed Freundlich and Langmuir adsorption isotherms. Fresh algal biomass of S. platensis gave maximum of 73.6% biosorption of chromium (VI) in 100 ppm solution at 1 g l(-1) cell loading. For improved economics, beta-carotene was extracted from S. platensis and the spent biomass was used for chromium (VI) biosorption. The maximum biosorption by spent biomass was increased to 86.2%. Thus, this two step process not only showed improved efficiency in biosorption ( approximately 17% increase) but also gave valuable byproduct, namely beta-carotene.
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S. platensis DMB can absorb more Cr (VI) than its fresh biomass.
“S. platensis DMB can absorb more Cr (VI) than its fresh biomass [128].”
From A Holistic Approach to Circular Bioeconomy Through the Sustainable Utilization of Microalgal Biomass for Biofuel and Other Value-Added Products (2024) · cites this paper as [128]
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References 20 · Cited by 134
- Authors
- Gokhale, S. V., Jyoti, K. K., & Lele, S. S.
- Affiliations
- Institute of Chemical Technology (IN)
- Corresponding author
- Lele, S.S.
- ORCID
- Lele, S.S.
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2008-06
- Volume
- 99
- Issue
- 9
- Pages
- 3600-3608
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2042553246
- Cited by
- 134
- References
- 20
- Citations by year
- 2026: 5 · 2025: 2 · 2024: 6 · 2023: 2 · 2022: 7 · 2021: 9 · 2020: 10 · 2019: 4 · 2018: 11 · 2017: 6 · 2016: 12 · 2015: 5 · 2014: 9 · 2013: 11 · 2012: 12
- FWCI
- 5.17
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chromium effects and bioremediation
- Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
- Keywords
- chromium(VI) biosorption, Spirulina platensis, Chlorella vulgaris, two-step kinetic model, Freundlich isotherm, Langmuir isotherm, β-carotene extraction, heavy metal removal, algal biomass valorization
- MeSH terms
- Adsorption, Biodegradation, Environmental, Chromium, Culture Media, Hydrogen-Ion Concentration, Kinetics, Models, Chemical, Pigments, Biological, Biomass, Chlorella vulgaris, Spirulina
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