Almufarij Rasmiah S, Abdulkhair Babiker Y, Salih Mutaz, Alhamdan Nujud M
Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 90905, Riyadh 11623, Saudi Arabia.
Nanomaterials (Basel). 2022 Oct 15;12(20):3617. doi: 10.3390/nano12203617.
Pharmaceutical pollution has pervaded many water resources all over the globe. The propagation of this health threat drew the researchers' concern in seeking an efficient solution. This study introduced toilet paper waste as a precursor for carbon nanoparticles (CRNPs). The TEM results showed a particle size range of 30.2 nm to 48.1 nm, the BET surface area was 283 m g, and the XRD pattern indicated cubical-graphite crystals. The synthesized CRNPs were tested for removing tigecycline (TGCN), chlortetracycline (CTCN), oxytetracycline (OTCN), and doxycycline (DXCN) via the batch process. The adsorption equilibrium time for TGCN, DXCN, CTCN, and OTCN was 60 min, and the concentration influence revealed an adsorption capacity of 172.5, 200.1, 202.4, and 200.0 mg g respectively. The sorption of the four drugs followed the PSFO, and the LFDM models indicated their high sorption affinity to the CRNPs. The adsorption of the four drugs fitted the multilayer FIM that supported the high-affinity claim. The removals of the four drugs were exothermic and spontaneous physisorption. The fabricated CRNPs possessed an excellent remediation efficiency for contaminated SW and GW; therefore, CRNPs are suggested for water remediation as low-cost sorbent.
药物污染已遍布全球许多水资源。这种对健康的威胁的扩散引起了研究人员对寻求有效解决方案的关注。本研究引入厕纸废料作为碳纳米颗粒（CRNPs）的前驱体。透射电子显微镜（TEM）结果显示粒径范围为30.2纳米至48.1纳米，比表面积（BET）为283平方米/克，X射线衍射（XRD）图谱表明为立方晶系石墨晶体。通过分批处理测试了合成的CRNPs对替加环素（TGCN）、金霉素（CTCN）、土霉素（OTCN）和强力霉素（DXCN）的去除效果。TGCN、DXCN、CTCN和OTCN的吸附平衡时间为60分钟，浓度影响显示吸附容量分别为172.5、200.1、202.4和200.0毫克/克。四种药物的吸附遵循伪二级动力学模型（PSFO），朗缪尔-弗伦德利希动力学模型（LFDM）表明它们对CRNPs具有高吸附亲和力。四种药物的吸附符合多层弗伦德利希等温线模型（FIM），支持了高亲和力的说法。四种药物的去除是放热的自发物理吸附。制备的CRNPs对受污染的地表水（SW）和地下水（GW）具有优异的修复效率；因此，建议将CRNPs作为低成本吸附剂用于水修复。
