Groundwater contamination with arsenic and fluoride poses serious health risks for millions in India, but a new innovation from IIT Guwahati offers an efficient and affordable way to remove both contaminants simultaneously.
- Removes arsenic and fluoride together efficiently
- Rotating aluminium electrode improves treatment
- Costs as low as Rs 18 for 1,000 litres of clean water
What happened
Researchers at IIT Guwahati have developed an innovative water purification technology capable of removing both arsenic and fluoride contaminants from groundwater simultaneously. The newly designed rotating-anode electrocoagulation reactor uses a rotating aluminium electrode that enhances the interaction between harmful toxins and the treatment process, achieving removal rates of up to 98.2% for arsenate and 91.8% for fluoride within minutes.
This breakthrough method addresses a longstanding challenge in water treatment where conventional processes often remove only one contaminant or require complex setups. The rotating electrode not only improves pollutant capture by renewing the electrode surface continuously but also prevents electrode passivation, allowing for consistent performance during prolonged use.
Why it feels good
Access to safe drinking water is a critical concern in many parts of India where arsenic and fluoride naturally contaminate groundwater, posing severe health risks over time. The IIT Guwahati innovation offers a practical and scalable solution that can benefit millions who rely on groundwater for daily use.
In addition to its effectiveness, the technology is financially accessible. With an operating cost ranging from Rs 18 to Rs 58 per 1,000 litres depending on contaminant concentration, it offers a low-cost option for safe water purification that could significantly reduce health hazards linked to toxic groundwater.
What to enjoy or watch next
The research team has tested the technology in real-world conditions using groundwater samples from Assam, confirming its performance even with naturally occurring ions like calcium, magnesium, and phosphate present. This encourages confidence in its applicability beyond laboratory environments.
Looking ahead, this method could be adapted for community-scale water purification systems, expanding its positive impact. Observers and supporters of water safety initiatives can look forward to pilot projects and broader adoption that bring this promising technology to more regions affected by water contamination.