en.Wedoany.com Reported - Researchers at the National Institute of Technology (NIT) Rourkela in India have developed a ceramic adsorbent produced from industrial by-products to remove toxic dye pollutants from industrial wastewater. This technology offers an economically viable and sustainable solution for wastewater treatment, while also addressing the challenge of industrial waste disposal.
The research was led by Sunipa Bhattacharyya, Associate Professor in the Department of Ceramic Engineering, with contributions from research scholars Susant Mohapatra and Sourav Ranjan Satpathy. The team demonstrated how industrial waste materials can be transformed into high-value products to support environmental protection and resource conservation.
Industries such as textiles, dyeing, and printing generate large volumes of colored wastewater containing synthetic dyes and chemical pollutants. If improperly treated, these pollutants enter water bodies, leading to environmental degradation, harming aquatic ecosystems, and posing risks to human health. As industrial activities expand, the demand for efficient and cost-effective wastewater treatment technologies becomes increasingly urgent.
To address this challenge, the NIT Rourkela team developed a water-based ceramic adsorbent using fly ash, ground granulated blast furnace slag (GGBS), and kaolin. Fly ash is a by-product of coal combustion in thermal power plants, while GGBS is a by-product of steel manufacturing. Both materials are produced in large quantities and are often difficult to dispose of. By utilizing them as raw materials, the team converted waste into functional materials, aligning with circular economy principles.
The ceramic adsorbent was specifically designed for the removal of methylene blue, a common synthetic dye found in industrial wastewater. Laboratory evaluations showed that the adsorbent achieved a removal efficiency of over 95%. The researchers noted that this technology could help enterprises significantly reduce pollutant levels before discharging wastewater, promoting cleaner water resources and improved environmental compliance.
The innovation of this study lies in its production process. Unlike geopolymer-based adsorbents that require heat-treated metakaolin, the team used raw kaolin, eliminating the energy-intensive heating stage. Professor Bhattacharyya pointed out that by omitting this step, the production process becomes more sustainable and economically viable, reducing production costs and the environmental footprint associated with manufacturing.
The researchers estimate that the manufacturing cost of this ceramic adsorbent ranges from 25 to 50 Indian rupees per kilogram. According to nedispatch.in, the combination of low production costs, high pollutant removal efficiency, and sustainable raw materials is expected to drive broader adoption of this technology across multiple industrial sectors, particularly among small and medium-sized enterprises seeking cost-effective environmental compliance solutions.
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