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Nitrate and phosphate removal by chitosan immobilized Scenedesmus
Abstract
The effect of chitosan immobilization of Scenedesmus spp. cells on its viability, growth and nitrate and phosphate uptake was investigated. Scenedesmus sp. (strains 1 and 2) and Scenedesmus obliquus immobilized in chitosan beads showed high viability after the immobilization process. Immobilized Scenedesmus sp. strain 1 had a higher growth rate than its free living counterpart. Nitrate and phosphate uptake by immobilized cells of Scenedesmus sp. (strain 1), freely suspended cells and blank chitosan beads (without cells) were evaluated. Immobilized cells accomplished a 70% nitrate and 94% phosphate removal within 12h of incubation while free-living cells removed 20% nitrate and 30% phosphate within 36 h of treatment. Blank chitosan beads were responsible for up to 20% nitrate and 60% phosphate uptake at the end of the experiment. Chitosan is a suitable matrix for immobilization of microalgae, particularly Scenedesmus sp., but this system should be improved before its application for water quality control.
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“Potential waste streams include municipal wastewater to remove nitrates and phosphates before discharge, and flue gas of coal or other combustible-based power plants to capture sulfates and CO2 [22–24].”
From Biofuels from algae: Challenges and potential (2010) · cites this paper as [23]
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Metadata
- Authors
- Fierro, S., del Pilar Sánchez-Saavedra, M., & Copalcúa, C.
- Affiliations
- Centro de Investigación Científica y de Educación Superior de Ensenada (MX)
- ORCID
- Fierro, Sashenka
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2008-03
- Volume
- 99
- Issue
- 5
- Pages
- 1274-1279
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2071576335
- Cited by
- 160
- References
- 33
- Citations by year
- 2026: 5 · 2025: 2 · 2024: 7 · 2023: 9 · 2022: 13 · 2021: 12 · 2020: 16 · 2019: 18 · 2018: 12 · 2017: 11 · 2016: 7 · 2015: 6 · 2014: 6 · 2013: 9 · 2012: 10
- FWCI
- 3.30
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Physical Sciences › Environmental Science › Pollution › Wastewater Treatment and Nitrogen Removal
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Keywords
- chitosan immobilization, Scenedesmus, Scenedesmus obliquus, microalgae immobilization, nitrate removal, phosphate removal, nutrient uptake, chitosan beads, microalgae growth rate, water quality control, biological nutrient removal
- MeSH terms
- Cell Survival, Nitrates, Phosphates, Time Factors, Cells, Immobilized, Scenedesmus, Chitosan
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