Cactus 'flesh' cleans up toxic water

The video explores the innovative use of cacti, specifically the mucilage, in cleaning polluted water and oil spills. Norma Alcantar, a chemical engineer, was inspired by her grandmother's traditional methods in Mexico. Her research, supported by the National Science Foundation, shows that cactus mucilage can effectively purify water, offering a sustainable and inexpensive alternative to chemical dispersants. Field tests in Haiti post-earthquake confirmed its efficacy. The potential for local harvesting of cacti for quick water decontamination after disasters is highlighted, showcasing a natural and innovative approach to water purification.

What inspired Norma Alcantar to explore the use of cacti in water purification?

• A scientific article she read

• A documentary on water pollution

• A university project

• Her grandmother's stories from rural Mexico

What is the main component of cacti used in the water purification process?

• Cactus mucilage

• Cactus flowers

• Cactus spines

• Cactus roots

How does cactus mucilage compare to traditional chemical dispersants?

• It is more expensive and less effective

• It is less sustainable but more effective

• It is more sustainable and less expensive

• It is equally effective but more costly

In which location did Alcantar conduct water quality tests using cactus mucilage?

• Amazon rainforest

• Deepwater Horizon site

• Haitian refugee camps

• Rural Mexico

What potential future application is suggested for cactus mucilage in the video?

• As a food additive

• For cleaning household surfaces

• As a fertilizer for crops

• For decontaminating drinking water after disasters