This study explored the adsorption of representative non-steroidal anti-inflammatory drugs (NSAIDs), acetaminophen (AP), ibuprofen (IB), and salicylic acid (SA) by biochars. The sorption kinetics were fitted with six commonly used kinetic models, and the isotherm data was well described by both Langmuir and Freundlich models. Biochars of longer pyrolysis time showed better performance with the Langmuir maximum sorption capacities for AP, IB, and SA of 196 mg/g, 132 mg/g, and 48.8 mg/g, respectively. Variation in temperature hardly affected the adsorption performances, while the influence of pH exhibited pronounced dependency on physicochemical properties of both NSAIDs and biochars. Eighteen ball-milled (BM) biochars were then produced under different ball-milling conditions and examined for NSAIDs removal. Compared with unmilled biochars, BM-biochars produced under optimum conditions showed higher removal efficiencies. Electrostatic interaction and pore width of biochars greatly affected the NSAIDs adsorption onto biochars.

这项研究探索了生物炭对代表性非甾体抗炎药（NSAIDs），对乙酰氨基酚（AP），布洛芬（IB）和水杨酸（SA）的吸附。用六个常用的动力学模型拟合吸附动力学，Langmuir和Freundlich模型都很好地描述了等温线数据。更长的热解时间的生物炭表现出更好的性能，Langmuir对AP，IB和SA的最大吸附能力分别为196 mg / g，132 mg / g和48.8 mg / g。温度的变化几乎不会影响吸附性能，而pH值的影响对NSAIDs和生物炭的理化性质表现出明显的依赖性。然后在不同的球磨条件下生产了18个球磨（BM）生物炭，并检查了NSAID的去除情况。与未磨碎的生物炭相比，在最佳条件下生产的BM生物炭显示出更高的去除效率。生物炭的静电相互作用和孔宽度极大地影响了NSAIDs吸附到生物炭上。