What is it about?
This study explored the use of Luffa cylindrica, a natural and eco-friendly material, to remove azo dyes from water. In large-scale tests, it removed 63% of dye from a 2-liter solution using a 10 g/L dose, with a maximum adsorption capacity of 25.25 mg/g. The dye could be easily desorbed (95.8%) using a mild alkaline solution, making the material reusable. The adsorption followed pseudo-second-order kinetics and fit the Langmuir isotherm model, with performance significantly affected by contact time and dye concentration. The study highlights the potential of Luffa cylindrica as a low-cost, sustainable solution for water purification.
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Why is it important?
This study highlights the potential of Luffa cylindrica as a sustainable and cost-effective adsorbent for removing azo dyes from water. In large-scale tests, it achieved 63% dye removal from a 2-liter solution using a 10 g/L dose, with a maximum adsorption capacity of 25.25 mg/g. The material demonstrated easy dye desorption (95.8%) with a mild alkaline solution, allowing for reuse. The adsorption process followed pseudo-second-order kinetics and fit the Langmuir isotherm model, with performance influenced by contact time and dye concentration. Overall, the findings support Luffa cylindrica as a promising eco-friendly solution for water purification.
Perspectives
In the future, Luffa cylindrica could be developed into an affordable and scalable water treatment solution for industrial and municipal wastewater systems, particularly in regions where access to advanced purification technologies is limited. Its natural abundance, low cost, and reusability make it an attractive option for sustainable dye removal in textile industry effluents. Additionally, further research could explore its modification or combination with other materials to enhance adsorption capacity and selectivity, potentially broadening its application to remove a wider range of pollutants beyond azo dyes.
Professor Rosenberg J Romero
Universidad Autonoma del Estado de Morelos
Read the Original
This page is a summary of: Removal of Azo Dyes from Water on a Large Scale Using a Low-Cost and Eco-Friendly Adsorbent, Sustainability, May 2025, MDPI AG,
DOI: 10.3390/su17114816.
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