In response to the growing environmental and health hazards posed by antibiotics like Ciprofloxacin (CIP), researchers have developed a groundbreaking composite made from bamboo leaf-derived biochar and iron silicate (BL-FeSi), enhanced with peroxymonosulfate (PMS). This innovative approach not only adsorbs but also catalytically degrades antibiotics, offering a dual-function solution to water pollution.

Ciprofloxacin, a widely used antibiotic, presents significant removal challenges due to its robust bactericidal properties and persistence in aquatic environments. Conventional treatment methods fall short, especially since CIP’s nitrogen content can transform into more toxic substances through secondary reactions. Here, advanced oxidation processes (AOPs), particularly those involving PMS, emerge as effective alternatives capable of generating potent oxidizing radicals that swiftly break down contaminants.

The BL-FeSi composite capitalizes on the synergistic effects of biochar’s adsorptive qualities and the catalytic prowess of iron silicate. The introduction of H2 reduction improves the composite by increasing its Fe(II) content, thereby enhancing its ability to activate PMS and promote catalysis. Laboratory tests have shown remarkable results: a 97% to 100% removal rate of CIP, depending on the solution’s pHpH is a measure of how acidic or alkaline a substance is. A pH of 7 is neutral, while lower pH values indicate acidity and higher values indicate alkalinity. Biochars are normally alkaline and can influence soil pH, often increasing it, which can be beneficial More, with the composite demonstrating significant resilience against common inorganic ions and maintaining high catalytic activity over multiple cycles.

This method not only addresses the immediate challenge of antibiotic degradation but also paves the way for more widespread application in the removal of various organic pollutants. By blending adsorption and catalysis, the BL-FeSi composite represents a significant advancement in the treatment of antibiotic-laden wastewater, promising a more effective and sustainable approach to safeguarding public health and the environment.