Lahore, July 27, 2023 (PPI-OT): With increasing global concerns over air pollution and the waste polyethylene terephthalate (PET) bottles, scientists in both public and private sectors are pre-occupied with sustainable and innovative solutions. In this regard, researchers at the University of Lahore (UOL), led by Dr Qudsia Kanwal (Associate Professor, Department of Chemistry), have developed an air filtration system that uses discarded PET bottles to combat the pressing issue of air pollution.
The UOL chemists design the self-cleaning, biodegradable, antismog nanoporous sheet filter to capture and eliminate harmful smog, dust particles, and other pollutants, contributing to improved air quality. This filter transforms waste PET bottles into nanoporous sheets that possess remarkable photocatalytic properties.
One of the primary objectives of this innovation is to address the detrimental impact of non-degradable PET bottles on the environment, particularly as soil pollutants. By harnessing the inherent properties of PET bottles, which are traditionally known for their non-degradable nature, scientists have found a way to repurpose these materials for environmental benefit. This cost-effective and eco-friendly solution marks a significant step forward in mitigating air pollution and promoting a cleaner environment.
The research mentioned that the nanoporous filtration sheets are embedded with photocatalytic materials capable of converting toxic pollutants, including carbon monoxide (CO) and volatile organic compounds (VOCs), into harmless carbon dioxide (CO2) and water (H2O). This transformation of harmful substances into non-toxic elements showcases the inventiveness of the technology and its contribution to combating air pollution.
Moreover, the study showed that the filter’s self-cleaning functionality further enhances its efficiency and longevity. By periodically cleansing itself, the filter maintains its effectiveness in capturing pollutants and ensures consistent air quality improvement. This novel air filtration system represents a significant milestone in waste management and air pollution control. Its introduction marks a transition from non-degradable materials to biodegradable alternatives, aligning with sustainable practices and promoting a circular economy.
The research concluded that the combination of efficient filtration, self-cleaning capabilities, photocatalytic degradation, and waste repurposing improves air quality and environmental sustainability. Antismog membranes coated with photocatalytic material break down pollutants, while sheets with abundant OH groups effectively adsorb smoke gases, resulting in significant reduction of harmful substances. With further research and development, it is hoped that this invention will pave the way for more innovative and eco-friendly solutions to pressing environmental challenges, reinforcing the urgent need for sustainable waste management and pollution control worldwide.
For more information, contact:
The University of Lahore
1 – KM Defence Road, Lahore, Pakistan
Tel: +92-42-111-865-865, +92-42-35322501 +92-42-35321761
Email: [email protected]
Website: www.uol.edu.pk