In response to growing concerns over water pollution, especially from pharmaceuticals like sulfamethoxazole (SMX), a new study explores an innovative solution. SMX, a widely-used antibiotic, is difficult to eliminate from wastewater using conventional methods, posing risks to ecosystems and public health. Researchers from various institutions have developed a biosurfactant-modified sludge biochar (OBC) to enhance the removal of SMX from contaminated water.

The biochar is derived from sewage sludge 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 and modified with an eco-friendly biosurfactant. This modification improves the biochar’s physical and chemical properties, significantly enhancing its adsorption capacity. In lab experiments, the modified biochar achieved a maximum SMX adsorption capacity of 43.61 mg/g. The study examined how various factors, such as 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 levels and the concentration of SMX, affected the adsorption process.

Characterization techniques, including Fourier transform infrared spectroscopy, revealed that biosurfactant modification altered the biochar’s surface structure, improving its adsorption efficiency. Both physisorption and chemisorption mechanisms were involved in the process.

This research presents a promising, cost-effective, and environmentally friendly approach to addressing pharmaceutical pollution in water, with potential applications for other contaminants. The study underscores the importance of developing sustainable adsorbents to tackle water pollution in a rapidly urbanizing world.