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U.S. Stockholm Junior Water Prize
HS-EN02

Comparison Between the Effects of Chlorella Vulgaris and Spirulina Platensis on the Bioremediation of Wastewater Pollutants

Energy and Environmental Engineering
Isabella Mixton-Garcia Auhona Shil

Grade:
10
Teacher:
Dr Tara Archuleta

"Algae have been applied to multiple innovations for sustainable development in recent years; specifically, the addition of algae can remove impurities from wastewater, a process known as phycoremediation. This project presents a thorough comparison between the effectiveness of two biomasses, Chlorella Vulgaris and Spirulina Platensis, on the bioremediation of wastewater pollutants. Previous works have addressed various aspects of Chlorella Vulgaris in treatment for wastewater; there is significantly less extensive research and application of Arthrospira Platensis in the purification of municipal water. We conducted this project by comparing fourteen wastewater indicators in an attempt to phycoremediate composite samples of primary effluent from the Tres Rios Wastewater Management Facility using algae biomasses: Arthrospira Platensis and Chlorella Vulgaris. Results showed that Chlorella Vulgaris was the most efficient bioremediating agent, proving to remediate 100% of Aluminum, 66% of Cyanuric Acid, 50% of Total Hardness, and 100% of Bromine from primary effluent. Though, Spirulina Platensis was effective at completely remediating cyanuric acid and had a quicker 50% decrease in total hardness compared to Chlorella Vulgaris. The world is in dire need of sustainable and cost-effective methods to purify contaminated water. Many 3rd world countries don’t have a proper sewage disposal system. Our research could aid them to implement a costeffective water purification system which could be the only option to help 3rd world countries reach UN Sustainable Development goals.


Project presentation

View Project Presentation file

Lab journal excerpts

View Lab Journal file

Research paper

View Research Paper file

2 thoughts on “Comparison between the Effects of Chlorella Vulgaris and Spirulina Platensis on the Bioremediation of Wastewater Pollutants

  1. I like the way you laid out your background research in your slide deck. It was easy to follow.

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