Embedding photosynthetic biorefineries with circular economies: Exploring the waste recycling potential of Arthrospira sp. to produce high quality by-products
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This study was conducted with the aim of embedding circular economies (waste recycling) with photosynthetic biorefineries, for production of commercially viable by-products. Since nitrogen source constitute the major input costs for commercial Arthrospira sp. production, the use of nitrogen rich wastewater for Arthrospira sp. cultivation could significantly reduce their production costs. This study evaluated the effects of high concentrations (8.5-120 mM) of alternative nitrogen sources (urea, ammonium and nitrite) on the biochemical, pigment and proteomic profile of Arthrospira sp., under batch and continuous conditions. Arthrospira sp. cells fed with urea were quantified with modified biochemical and proteomic profile compared to the nitrate fed cells. No inhibitory effect of urea was observed on the biomass even at 120 mM. Nitrite fed cells exhibited comparable biochemical and proteomic profiles as nitrate fed cells. These results clearly indicated at the possibility of using urea rich wastewater streams for profitable cultivation of Arthrospira sp.
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Arthrospira was found to prefer urea over nitrite and nitrate as a nitrogen source up to 120 mM, allowing human waste to feed Stage 2.
“Fortunately for the goal of recycling elements, Arthrospira was found to prefer urea over nitrite and nitrate as a nitrogen source up to 120 mM, allowing human waste to feed Stage 2 [51].”
From Biologically-Based and Physiochemical Life Support and In Situ Resource Utilization for Exploration of the Solar System—Reviewing the Current State and Defining Future Development Needs (2021) · cites this paper as [51]
Section 3.2.2 reports higher nitrogen uptake from urea than from nitrate or nitrite at concentrations through 120 mM. The Conclusions propose that this could help with urea- or urine-rich wastewater remediation, but do not establish that human waste can directly feed the citing paper’s Stage 2. (LLM, conf=0.85)
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- Authors
- Sachdeva, N., Mascolo, C., Wattiez, R., & Leroy, B.
- Affiliations
- University of Mons (BE)
- Corresponding author
- Leroy, Baptiste
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2018-11
- Volume
- 268
- Pages
- 237-246
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2884171812
- Cited by
- 16
- References
- 40
- Citations by year
- 2026: 1 · 2024: 2 · 2023: 3 · 2022: 2 · 2021: 4 · 2020: 3 · 2019: 1
- FWCI
- 0.46
- Type
- journal article
- Language
- en
- Open access
- green
- orbi.umons.ac.be
- Licence
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- ORBi UMONS (submittedVersion, other-oa)
- Funders
- European Regional Development Fund
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
- Physical Sciences › Environmental Science › Waste Management and Disposal › Wastewater Treatment and Reuse
- Keywords
- Arthrospira, Spirulina, circular economy, waste recycling, nitrogen-rich wastewater, urea, ammonium, nitrite, nitrogen source, biochemical profile, pigment composition, proteomic profile, continuous cropping, biomass production, by-products
- MeSH terms
- Nitrogen, Photosynthesis, Biomass, Proteomics, Spirulina, Recycling, Wastewater
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