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<p>Schnapps vinasse is a highly polluting by-product of alcoholic beverage production, rich in organic matter and nutrients. In this study, <i>Chlorella</i> sp. MC18 and <i>Scenedesmus</i> sp. MJ23-R were cultivated in schnapps vinasse to evaluate their potential for biomass production and nutrient recovery. The experimental design included vinasse dilutions of 10–50% (v/v) to determine optimal growth conditions. The highest biomass productivity was achieved at 20% and 40% vinasse, with final biomass concentrations up to 1.0&#xa0;g L<sup>–1</sup>. Chemical oxygen demand (COD) removal ranged from 40 to 70%, while nitrate (100%) and phosphate (80%) removal efficiencies were high, with elimination rates of 1012, 1 and 9&#xa0;mg L<sup>–1</sup>&#xa0;day<sup>–1</sup>, respectively. Additionally, the use of schnapps vinasse also promoted the accumulation of carbohydrates (50% dw), proteins (48% dw), and lipids (30% dw). These findings highlight the feasibility of microalgae-based biorefineries for sustainable wastewater treatment and resource recovery, contributing to circular bioeconomy strategies. Overall, this study establishes a sustainable method to maximise nutrient recovery from schnapps vinasse for the production of biomass and high-value metabolites through the cultivation of acclimatised strains of <i>Chlorella</i> and <i>Scenedesmus</i>.</p>

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Microalgae-based biorefinery for schnapps vinasse treatment: biomass production, nutrient recovery and carbohydrates, proteins and lipids accumulation

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Marco Alberto Mamani Condori,
  • Jhenily Isabella Contreras Beltran,
  • Maria Irene Larico Flores,
  • Esthefany Mollo Torres,
  • Nemesio Edgar Veliz Llayqui,
  • José C. M. Pires

摘要

Schnapps vinasse is a highly polluting by-product of alcoholic beverage production, rich in organic matter and nutrients. In this study, Chlorella sp. MC18 and Scenedesmus sp. MJ23-R were cultivated in schnapps vinasse to evaluate their potential for biomass production and nutrient recovery. The experimental design included vinasse dilutions of 10–50% (v/v) to determine optimal growth conditions. The highest biomass productivity was achieved at 20% and 40% vinasse, with final biomass concentrations up to 1.0 g L–1. Chemical oxygen demand (COD) removal ranged from 40 to 70%, while nitrate (100%) and phosphate (80%) removal efficiencies were high, with elimination rates of 1012, 1 and 9 mg L–1 day–1, respectively. Additionally, the use of schnapps vinasse also promoted the accumulation of carbohydrates (50% dw), proteins (48% dw), and lipids (30% dw). These findings highlight the feasibility of microalgae-based biorefineries for sustainable wastewater treatment and resource recovery, contributing to circular bioeconomy strategies. Overall, this study establishes a sustainable method to maximise nutrient recovery from schnapps vinasse for the production of biomass and high-value metabolites through the cultivation of acclimatised strains of Chlorella and Scenedesmus.