This blog post delves into a recent study published in Cleaner Chemical Engineering by Tujjohra et al., which explores a sustainable method for converting textile industry waste cotton into biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More through pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More.

The research examines how varying pyrolysis temperatures (300-500°C) affect biochar yield, composition, and properties, seeking optimal conditions for carbon retention and energy efficiency. Results indicate that biochar yield decreases with rising temperature, from 50.5% at 300°C to 26.7% at 500°C, while fixed carbon content increases from 46.1% to 70.7% within the same temperature range. Higher temperatures also enhance the biochar’s calorific value and structural stability.

The study demonstrates that waste cotton can be transformed into biochar with significant energy potential and structural integrity through direct pyrolysis. The biochar produced at 500°C exhibits the highest fixed carbon content (70.7%) and calorific value (26.8 MJ/kg). This suggests that higher pyrolysis temperatures are more effective for producing biochar with enhanced fuel properties.

This research offers a pathway for sustainable valorization of textile waste, converting it into a valuable resource. The optimized biochar production process not only aids in waste management but also yields a product with potential applications in energy and environmental sectors.

Source: Tujjohra, F., Haque, M. E., Kader, M. A., & Rahman, M. M. (2025). Sustainable valorization of textile industry cotton waste through pyrolysis for biochar production. Cleaner Chemical Engineering, 11, 100161. https://doi.org/10.1016/j.clce.2025.100161