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Aquatic weed Spirodela polyrhiza, a potential source for energy generation and other commodity chemicals production

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  • Patel, Vipul R.
  • Bhatt, Nikhil

Abstract

S. polyrhiza will be considering as a 2G feedstock, as generating 15–22 g/m2d fresh biomass by improving the quality of sewage. We propose a tractable circular process for pigments, lipid, Nano-catalysts and energy dense substrate (starch) from S. polyrhiza biomass. A ton of S. polyrhiza biomass was responsible for production of 0.8–1.2 kg of R-phycoerythrin, 0.7–0.9 kg of R-phycocyanin, 2.7–4.3 kg of lipids, 5.3–6.1 kg of ZVI, 79.7–80.4 kg of starch. The produced starch was further fermented to yield 38.8–40.8 l of ethanol. The waste generated in each step was utilized to produce 2.23 lakh liter biogas equivalent 8.51 GJ energy. The elimination of residue, reduce ∼79–85% in chemicals and energy usage in starch extraction. The synthesized ZVI efficiently mineralized RV5 wastewater at the rate of 26.29 ± 0.23 kgCODm−3d−1 up to seven cycles. S. polyrhiza reduce ∼240 kgCO2-eq for attaining one-ton fresh biomass. Overall findings will the base for starting bio-industries which minimizing the dependence on the terrestrial resources for food, energy and chemicals.

Suggested Citation

  • Patel, Vipul R. & Bhatt, Nikhil, 2021. "Aquatic weed Spirodela polyrhiza, a potential source for energy generation and other commodity chemicals production," Renewable Energy, Elsevier, vol. 173(C), pages 455-465.
    • Handle: RePEc:eee:renene:v:173:y:2021:i:c:p:455-465
    DOI: 10.1016/j.renene.2021.03.054
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    References listed on IDEAS

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    1. Wang, Cui & Zhu, Chao & Huang, Jianbing & Li, Linfeng & Jin, Hui, 2021. "Enhancement of depolymerization slag gasification in supercritical water and its gasification performance in fluidized bed reactor," Renewable Energy, Elsevier, vol. 168(C), pages 829-837.
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    Cited by:

    1. Małgorzata Krzywonos & Zdzisława Romanowska-Duda & Przemysław Seruga & Beata Messyasz & Stanisław Mec, 2023. "The Use of Plants from the Lemnaceae Family for Biofuel Production—A Bibliometric and In-Depth Content Analysis," Energies, MDPI, vol. 16(4), pages 1-24, February.
    2. Pant, Manish & Pant, Tanuja, 2023. "Maximising biotransformation of pine needles to microbial lipids using Lipomyces starkeyi MTCC 1400T," Renewable Energy, Elsevier, vol. 206(C), pages 574-581.

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