Adsorptivity and mechanism investigation for auramine on sugarcane leaf-based activated carbon prepared with Ni(NO3)2/NH4H2PO4 as an activator
MATERIALS TODAY SUSTAINABILITY(2024)
摘要
Water pollution causes serious harm to aquatic plants and human health, which is an urgent problem in the world. In this paper, sugarcane leaf-based activated carbon (PSLAC and NiPSLAC) was prepared with sugarcane leaves as raw material and NH4H2PO4 and Ni(NO3)(2)/NH4H2PO4 as activators, respectively, which was applied to the adsorption of auramine in dyeing wastewater. At the same time, the water consumption of the sample preparation process was studied. X-ray diffraction (XRD), scanning electron microscope (SEM), thermogravimetric analysis (TG-DTG), fourier transform infrared spectrometer (FTIR), and Brunauer-Emmett-Teller (BET) were used to investigate the physicochemical properties of the samples. The water consumption of the NiPSLAC sample during the preparation process was 213.15 mL/g, which was 4.93%, 91.05%, 89.09%, 85.58%, and 54.18% of the NH4H2PO4, NaOH, KOH, K2CO3, and H3PO4 activated samples, respectively. The specific surface area and pore volume of the NiPSLAC sample were 1386.20 m(2)/g and 1.53 cm(3)/g, which were 410.57 m(2)/g and 0.46 cm(3)/g higher than the PSLAC sample, respectively. Compared with the PSLAC sample, the NiPSLAC sample had a higher graphitization degree and richer surface functional groups. Therefore, the NiPSLAC sample showed a higher adsorption capacity for auramine, reaching 164 mg/g, which was 1.12 times that of PSLAC, and the pseudo-second-order kinetic model and the Langmuir isotherm model could describe the adsorption process. This study provides a novel and advanced idea for developing a high-quality adsorbent for the removal of dyeing wastewater.
更多查看译文
关键词
Sugarcane leaf-based activated carbon,Ni(NO3)(2)/NH4H2PO4,Auramine,Adsorption
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要