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The Effect of pH on Growth and Carbon Sequestration Efficiency of Chlorella vulgaris

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  • Nursyafica Nadia Johari

    (Herbarium Lab Unit, Department of Landscape Architecture, Kulliyyah of Architecture and Environmental Design, International Islamic University Malaysia, 53100 Kuala Lumpur, Malaysia)

  • Rashidi Othman

    (Herbarium Lab Unit, Department of Landscape Architecture, Kulliyyah of Architecture and Environmental Design, International Islamic University Malaysia, 53100 Kuala Lumpur, Malaysia)

Abstract

The increasing urgency of climate change has driven the need for innovative carbon mitigation strategies. Microalgae, particularly C.vulgaris, have garnered attention for their potential to capture atmospheric COâ‚‚ while contributing to ecological sustainability. This study investigates the optimization of carbon sequestration potential of C. vulgaris under varying pH levels (3.0 to 11.0) using BBM medium. Growth performance was assessed by measuring optical density (OD750) and biomass accumulation, while carbon sequestration was quantified by calculating COâ‚‚ equivalent fixation over a 14-day culture period. The results reveal that C. vulgaris exhibited maximum carbon fixation at pH 9, demonstrating its adaptability to optimized environmental conditions. These findings emphasize the potential of C. vulgaris as an efficient, scalable, and eco-friendly carbon sink, positioning it as a viable candidate for integration into urban green infrastructure and climate mitigation strategies. This research provides valuable insights for policy frameworks aiming to incorporate biological solutions into the fight against climate change.

Suggested Citation

  • Nursyafica Nadia Johari & Rashidi Othman, 2025. "The Effect of pH on Growth and Carbon Sequestration Efficiency of Chlorella vulgaris," International Journal of Research and Scientific Innovation, International Journal of Research and Scientific Innovation (IJRSI), vol. 12(5), pages 477-480, May.
    • Handle: RePEc:bjc:journl:v:12:y:2025:i:5:p:477-480
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