Eco-Friendly Chimneys Reduce Air Pollution by Up to 58% in Bangladesh Brick Kilns

Researchers at Bangladesh Agricultural University have conducted a study that reveals the effectiveness of eco-friendly chimneys equipped with Carbon Purification Technology (CPT) in reducing air pollution from brick kilns. According to the study, led by Professor Dr Murad Ahmed Faruk, installing CPT-equipped chimneys can decrease toxic emissions by up to 58%. The technology, invented in 2020, operates through a water-based filtration process that converts black smoke into white steam, effectively removing pollutants. The study, conducted at a brick kiln in Kushtia Namapara, Muktagachha upazila, Mymensingh, showed a significant reduction in particulate matter, methane, carbon dioxide, and nitrous oxide emissions.

Key Takeaways:

• The study found that installing eco-friendly chimneys equipped with CPT can reduce air pollution by up to 58% in Bangladesh brick kilns.
• The CPT system, invented by Ali Hossain in 2020, uses a water-based filtration process to convert black smoke into white steam, effectively removing toxic pollutants.
• Laboratory analysis showed a dramatic reduction in particulate matter from 314 mg/litre to 32 mg/litre, a 90% decrease in methane emissions, a 32% decrease in carbon dioxide emissions, and a 50% decrease in nitrous oxide emissions.
• The collected carbon residue is recycled, while the used water undergoes treatment in a containment basin.
• The eco-chimney system comprises an eight-chamber water spray unit that traps carbon particles from the smoke, releasing only harmless white steam into the air.
• The technology also delivers economic advantages, as production costs have decreased due to the reuse of carbon sludge captured from the smoke.
• Widespread implementation of this innovation could be transformative in creating a greener Bangladesh.