A recent study published in Separation and Purification Technology presents a promising method for enhancing phosphate recycling from wastewater using biochar. The research focuses on fabricating porous magnesium oxide nanofiber-functionalized biochar (PMgNF-BC) from waste biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More and magnesite. This material, developed via a scalable and straightforward process, exhibits improved phosphate adsorption and regeneration capabilities, making it a potential solution for sustainable phosphorus recycling.

Phosphorus is an essential nutrient but also a pollutant when released into the environment in excessive amounts, causing issues like algal blooms. Given the non-renewable nature of phosphorus and its increasing demand, particularly in industries such as electric vehicle batteries, efficient recycling methods are crucial. Current techniques like chemical crystallization, biological treatment, and membrane separation have limitations, such as high costs, low efficiency, and secondary pollution.

PMgNF-BC addresses these challenges by offering high phosphate adsorption capacity (up to 725.43 mg/g at 318.15 K) and excellent regeneration performance, retaining 84.2% efficiency after eight cycles. The material’s porous structure and stable MgO nanofibers prevent the typical aggregation problems seen in other biochar adsorbents. This study highlights PMgNF-BC’s potential to improve phosphate recycling efficiency, with applications in wastewater treatment and agriculture as a magnesium-phosphate fertilizer. The use of waste biomass and magnesite makes this approach both cost-effective and environmentally friendly.