Innovative Approach to Antibiotics Removal: Fe-Loaded Porous Hydrothermal Biochars

This study introduces Fe-loaded porous hydrothermal biochars (FeKHCs) synthesized through hydrothermal pretreatment, pyrolysis, and K2C2O4 activation for efficient antibiotics removal. FeKHC900, with superior properties, demonstrates remarkable tetracycline adsorption, offering a promising and sustainable solution to combat water contamination and contribute to global health.

February 24, 2024

1–2 minutes

Deng, Chen, et al (2024) A novel Fe-loaded porous hydrothermal 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 for removing tetracycline from wastewater: Performance, mechanism, and fixed-bed column. *Journal of Environmental Chemical Engineering*. https://doi.org/10.1016/j.jece.2024.112256

The global surge in animal antibiotic consumption poses a severe threat to environmental and human health. Addressing this, a groundbreaking study introduces a novel solution: Fe-loaded porous hydrothermal biochars (FeKHCs). With antibiotic residues reaching alarming levels in water sources, the study emphasizes the need for effective treatment methods.

The researchers successfully synthesized FeKHCs through a two-step process involving hydrothermal pretreatment and 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 at varying temperatures. The key factor in enhancing the biochar’s properties was the activation using K2C2O4, which favored micropore formation and significantly improved specific surface area (SSA) and porosityPorosity of biochar is a key factor in its effectiveness as a soil amendment and its ability to retain water and nutrients. Biochar’s porosity is influenced by feedstock type and pyrolysis temperature, and it plays a crucial role in microbial activity and overall soil health. Biochar More volume (Vtotal). FeKHC900, synthesized at 900 °C, exhibited exceptional characteristics with a high SSA of 1487.55 m2/g and Vtotal of 0.9951 cm3/g.

FeKHC900 demonstrated remarkable adsorption capabilities, particularly for removing tetracycline (TC) from wastewater. The adsorption mechanism was found to be dominated by π-π interactions and pore-filling, showcasing its effectiveness in treating antibiotics.

In addition to its exceptional adsorption capacity of 606.52 mg/g for TC, FeKHC900 displayed impressive dynamic adsorption performance in fixed-bed column experiments, reaching 425.93 mg/g. The biochar exhibited resilience to interference and selective adsorption ability under various conditions, making it a promising solution for practical use.

This study presents a simple yet effective strategy for fabricating Fe-loaded porous hydrothermal biochars as efficient adsorbents for antibiotics removal. With a focus on addressing the global antibiotic crisis, the FeKHCs offer a cost-effective and environmentally friendly solution. The findings open new possibilities for developing advanced technologies to combat antibiotic contamination in water sources, providing hope for a healthier and more sustainable future.