The article "Efficient Adsorption of Nitrogen and Phosphorus in Wastewater by Biochar" by Xichang Wu, Wenxuan Quan, Qi Chen, Wei Gong, and Anping Wang provides an overview of the preparation, modification methods, advancements, and factors influencing the adsorption of nitrogen and phosphorus by biochar. Biochar, a carbon-rich substance with a high specific surface area and porous structure, is effective in removing these nutrients from water, reducing environmental pollution. The preparation of biochar involves pyrolysis of biomass without chemical treatment, while modification methods include chemical, physical, and biological treatments to enhance its adsorption capacity. Chemical modifications, such as impregnation with FeCl3 or MgCl2, increase the surface area and functional groups, improving adsorption efficiency. Physical modifications, like ball milling and steam activation, also enhance adsorption by increasing surface area and pore volume. Biological modifications using microorganisms can further enhance adsorption efficiency. The adsorption of nitrogen and phosphorus by biochar is influenced by factors such as raw material, modification methods, pyrolysis conditions, pH, coexisting ions, reaction temperature, and dosage. The reusability of biochar is also discussed, highlighting its potential for multiple cycles of adsorption and desorption. The article concludes with future research directions, emphasizing the need to optimize biochar for efficient and sustainable nitrogen and phosphorus removal from wastewater.The article "Efficient Adsorption of Nitrogen and Phosphorus in Wastewater by Biochar" by Xichang Wu, Wenxuan Quan, Qi Chen, Wei Gong, and Anping Wang provides an overview of the preparation, modification methods, advancements, and factors influencing the adsorption of nitrogen and phosphorus by biochar. Biochar, a carbon-rich substance with a high specific surface area and porous structure, is effective in removing these nutrients from water, reducing environmental pollution. The preparation of biochar involves pyrolysis of biomass without chemical treatment, while modification methods include chemical, physical, and biological treatments to enhance its adsorption capacity. Chemical modifications, such as impregnation with FeCl3 or MgCl2, increase the surface area and functional groups, improving adsorption efficiency. Physical modifications, like ball milling and steam activation, also enhance adsorption by increasing surface area and pore volume. Biological modifications using microorganisms can further enhance adsorption efficiency. The adsorption of nitrogen and phosphorus by biochar is influenced by factors such as raw material, modification methods, pyrolysis conditions, pH, coexisting ions, reaction temperature, and dosage. The reusability of biochar is also discussed, highlighting its potential for multiple cycles of adsorption and desorption. The article concludes with future research directions, emphasizing the need to optimize biochar for efficient and sustainable nitrogen and phosphorus removal from wastewater.