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Abstract：
In this study, phosphoric acid activation was employed to synthesize nitrogen-doped mesoporous activated carbon (designated as MR1) from Lentinus edodes (shiitake mushroom) residue, while aiming to efficiently remove acetaminophen (APAP), carbamazepine (CBZ), and metronidazole (MNZ) from aqueous solutions. We characterized the physicochemical properties of the produced adsorbents using scanning electron microscopy (SEM), nitrogen adsorption isotherms, and X-ray photoelectron spectroscopy (XPS). MR1, MR2, and MR3 were prepared using phosphoric acid impregnation ratios of 1, 2, and 3 mL/g, respectively. Notably, MR1 exhibited a significant mesoporous structure with a volume of 0.825 cm3/g and a quaternary nitrogen content of 2.6%. This endowed MR1 with a high adsorption capacity for APAP, CBZ, and MNZ, positioning it as a promising candidate for water purification applications. The adsorption behavior of the contaminants followed the Freundlich isotherm model, suggesting a multilayer adsorption process. Notably, MR1 showed excellent durability and recyclability, maintaining 95% of its initial adsorption efficiency after five regeneration cycles and indicating its potential for sustainable use in water treatment processes.
摘要：
在这项研究中,磷酸活化用于从香菇（香菇）残留物中合成氮掺杂的中孔活性炭（称为MR1），同时旨在有效去除对乙酰氨基酚（APAP），卡马西平（CBZ），和甲硝唑(MNZ)来自水溶液。我们使用扫描电子显微镜（SEM）表征了所产生的吸附剂的物理化学性质，氮吸附等温线，和X射线光电子能谱(XPS)。使用1、2和3mL/g的磷酸浸渍比例制备MR1，MR2和MR3，分别。值得注意的是,MR1表现出显著的介孔结构,其体积为0.825cm3/g,季氮含量为2.6%。这赋予了MR1对APAP的高吸附能力，CBZ,和MNZ，将其定位为净水应用的有希望的候选者。污染物的吸附行为遵循Freundlich等温线模型，表明多层吸附过程。值得注意的是,MR1表现出优异的耐久性和可回收性，在五个再生循环后保持其初始吸附效率的95％，并表明其在水处理过程中可持续使用的潜力。
