ENA State 2025-12-16 12:31:00 <p><span style="font-size:14px"><strong>Lucknow, Dec 16 (KNN)</strong> Scientists at Harcourt Butler Technical University (HBTU) have developed a biodegradable filter capable of removing toxic dyes such as methylene blue and Congo red from contaminated water, offering a promising solution for the textile and leather industries.</span></p> <p><span style="font-size:14px"><strong>Innovative Film-Based Technology</strong></span></p> <p><span style="font-size:14px">The filter is made from a biodegradable film developed using polyvinyl alcohol (PVA) and starch, integrated with carbon nanotubes derived from plastic waste. </span></p> <p><span style="font-size:14px">These materials were combined to form cross-linked nanocomposite films that are durable, reusable and fully biodegradable. The filter can be reused 15 to 20 times depending on the level of contamination.</span></p> <p><span style="font-size:14px">According to the researchers, the film successfully removed 96.43 percent of methylene blue and 88.08 percent of Congo red dyes from wastewater. </span></p> <p><span style="font-size:14px">Both dyes are widely used in industrial dyeing processes and are known to be carcinogenic, posing serious risks to environmental and human health.</span></p> <p><span style="font-size:14px"><strong>Sustainable and Low-Cost Materials</strong></span></p> <p><span style="font-size:14px">All materials used in the development are low-cost, renewable and sourced from plastic waste. The technology combines green chemistry, waste-to-wealth principles and clean water solutions, offering dual benefits of plastic waste management and water pollution control.</span></p> <p><span style="font-size:14px"><strong>Biodegradable and Environment-Friendly</strong></span></p> <p><span style="font-size:14px">The film-based filter is effective in removing both positively and negatively charged dyes and dissolves naturally in water after multiple uses. </span></p> <p><span style="font-size:14px">Biodegradable materials decompose through natural microbial action, re-entering the environment without causing pollution, making this innovation a sustainable alternative to conventional filtration systems.</span></p> <p><span style="font-size:14px"><em><strong>(KNN Bureau)</strong></em></span></p> 44432 https://knnindia.co.in/news/newsdetails/state/hbtu-scientists-develop-biodegradable-filter-to-remove-toxic-dyes-from-industrial-wastewater 2025-12-16 12:31:00 knnindia.co.in