摘要
      人类通过暴露于水中的药物污染物而面临抗生素耐药性基因（ARGs）和抗微生物耐药性（AMR）的重大风险，因此迫切需要具有成本效益的环境解决方案来缓解这场危机。本研究介绍了铁改性泥炭和磁铁矿松树皮作为高效、低成本和绿色的生物吸附剂，用于吸附废水中的药物污染物。将从地下水处理污泥中提取的铁改性的泥炭生物质溶于酸中以制备铁改性泥炭生物吸附剂，并将作为林业副产品的松树皮与铁盐（Fe3+：Fe2+＝2∶1）混合以获得磁铁矿生物吸附剂。与甲氧苄啶相比，左氧氟沙星的吸附几乎不受pH的影响。在180分钟的接触时间后，抗生素对两种生物吸附剂的去除效率达到平衡。铁改性泥炭对抗生素和磁铁矿松树皮的最大吸附量分别为153.0 mg/g和184.1 mg/L。基于傅立叶变换红外光谱（FTIR）分析，提出了可能的抗生素吸附机理。用实际废水进行的实验表明，甲氧苄啶的去除率为56.6–84.3%（剂量：3 g/L）。此外，生物吸附剂还去除了多种其他药物。
Abstract
Humans are at significant risk of antibiotic resistance genes (ARGs) and antimicrobial resistance (AMR) via exposure to pharmaceutical contaminants in water, so there is a strong need for cost-effective environmental solutions to mitigate this crisis. This study introduces iron-modified peat and magnetite-pine bark as efficient, low-cost and green biosorbents for the adsorption of pharmaceutical contaminants from wastewater. Peat biomass, modified by iron extracted from a groundwater treatment sludge was dissolved in acid to prepare the iron-modified peat biosorbent, and pine (Pinus sylvestris) bark as a forest industry by-product was mixed with iron salts (Fe3+: Fe2+ = 2:1) to obtain the magnetite biosorbent. The adsorption of levofloxacin was little influenced by pH compared to trimethoprim. The equilibrium removal efficiency of antibiotics over both biosorbents was reached after 180 min contact time. The maximum adsorption capacity over iron-modified peat was about 200 mg/g for both antibiotics and over magnetite-pine bark 153.0 mg/g for levofloxacin and 184.1 mg/L for trimethoprim. Possible antibiotic adsorption mechanisms were proposed based on the Fourier transform infrared spectroscopy (FTIR) analysis. Experiments with real wastewater effluent revealed trimethoprim removal of 56.6–84.3% (dosage: 3 g/L). Moreover, a variety of other pharmaceuticals were removed by the biosorbents.

https://www.sciencedirect.com/science/article/pii/S0926669023002558