A recent study published in the Journal of the Taiwan Institute of Chemical Engineers explored the effectiveness of 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 derived from cow manure in removing organic dyes from wastewater. Researchers synthesized biochar at various pyrolysis temperatures (300, 500, 700, and 900 °C), discovering that biochar produced at 900 °C (CMBC900) exhibited superior adsorption capacities.

CMBC900 demonstrated the highest dye adsorption, with capacities of 200 mg/g for methylene blue (MB) and 147 mg/g for methyl orange (MO). This biochar maintained high efficiency even after ten adsorption-desorption cycles, highlighting its robustness and long-term potential as an adsorbent. The functional groups -COOH, C=O, and -OH played a crucial role in dye adsorption, as identified by Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS).

The study emphasizes the economic and environmental benefits of converting agricultural waste, like cow manure, into biochar. This process not only offers a sustainable solution for waste management but also addresses water pollution by effectively removing harmful dyes from wastewater. Given the challenges posed by industrial dye pollution, the use of biochar from cow manure presents a promising, eco-friendly method for water purification.

By developing functional porous materials for dye adsorption, this research supports sustainable agricultural practices and contributes positively to environmental management efforts. The findings highlight the potential of animal waste-derived biochar in providing an effective, economically viable solution for improving water quality.