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<p>Microalgae, ubiquitous in diverse aquatic ecosystems, present a promising avenue for energy generation through cultivation. This study focused on the cultivation of indigenous <i>Chlorella vulgaris</i> using both dairy wastewater (DWW) and pharmaceutical industry wastewater (PIWW) to ascertain its viability for biodiesel production. The results showed that biodiesel yields of 78% and 76% were attained from <i>C. vulgaris</i> biomass cultivated using DWW utilizing potassium hydroxide (KOH) and sodium hydroxide (NaOH) catalysts, respectively. The results demonstrated its efficacy in wastewater treatment, with removal efficiencies of 63–60% for total dissolved solids (TDS), 82–93% for biochemical oxygen demand (BOD), 73–85% for chemical oxygen demand (COD), 80% for total Kjeldahl nitrogen (TKN), and 82–88% for total phosphorus (TP), complementing biodiesel production. This dual-purpose approach emphasizes the potential of microalgae for realizing sustainable solutions at the intersection of environmental management and bioenergy production.</p>

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Utilizing Industrial Wastewater for Cultivation of Chlorella vulgaris NIES-227: A Study on Biodiesel Yield Optimization with Alkali Catalysts

  • 期刊论文

  • 发表日期：

    2025年5月15日

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  • Sonika Kumari,
  • Vinod Kumar,
  • Richa Kothari,
  • Pankaj Kumar

摘要

Microalgae, ubiquitous in diverse aquatic ecosystems, present a promising avenue for energy generation through cultivation. This study focused on the cultivation of indigenous Chlorella vulgaris using both dairy wastewater (DWW) and pharmaceutical industry wastewater (PIWW) to ascertain its viability for biodiesel production. The results showed that biodiesel yields of 78% and 76% were attained from C. vulgaris biomass cultivated using DWW utilizing potassium hydroxide (KOH) and sodium hydroxide (NaOH) catalysts, respectively. The results demonstrated its efficacy in wastewater treatment, with removal efficiencies of 63–60% for total dissolved solids (TDS), 82–93% for biochemical oxygen demand (BOD), 73–85% for chemical oxygen demand (COD), 80% for total Kjeldahl nitrogen (TKN), and 82–88% for total phosphorus (TP), complementing biodiesel production. This dual-purpose approach emphasizes the potential of microalgae for realizing sustainable solutions at the intersection of environmental management and bioenergy production.