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Polyethylene over magnetite-multiwalled carbon nanotubes for kerosene removal from water
Chemosphere ( IF 8.8 ) Pub Date : 2021-09-22 , DOI: 10.1016/j.chemosphere.2021.132310
Thamer Adnan Abdullah 1 , Tatjana Juzsakova 2 , Hadeel Mansoor 3 , Ali Dawood Salman 4 , Rashed Taleb Rasheed 5 , Sana Abdulhadi Hafad 6 , Muhammad Ali Mallah 7 , Endre Domokos 2 , Nguyen Xuan Cuong 8 , Ashok Kumar Nadda 9 , S Woong Chang 10 , Phuoc-Cuong Le 11 , D Duc Nguyen 12
Affiliation  

In this study, a nano-adsorbent was prepared for kerosene removal from water. Multiwalled carbon nanotubes (MWCNTs) were functionalized with concentrated HNO3 (nitric acid). Subsequently, Fe3O4 (magnetite) nanoparticles were deposited on the MWCNTs to prepare a magnetite/MWCNTs (Fe-MWCNTs) nanocomposite. Then, polyethylene was added to the Fe-MWCNTs to fabricate a polyethylene/magnetite/MWCNTs (PE/Fe-MWCNTs) novel nanocomposite. The nano-adsorbent was characterized using BET, FTIR, Raman, XRD, TEM, and SEM. A kerosene–water model mixture was used for adsorption tests. Several parameters: adsorption time, adsorbent dose, solution pH, solution temperature, and kerosene concentration in the kerosene-water model mixture, were analyzed during adsorption experiments. After each batch experiment, kerosene concentration was determined using high-performance liquid chromatography (HPLC). Magnetic field was used to remove the adsorbent after each experiment. The kerosene adsorption capacity and removal efficiency of the PE/Fe-MWCNTs nanocomposite (3560 mg/g and 71.2 %, respectively) were higher than those of Fe-MWCNTs, ox-MWCNTs, and fresh MWCNTs (3154 mg/g and 63.1 %, 2204 mg/g and 44.0 %, and 2092 mg/g and 41.8 %, respectively). Kerosene adsorption followed a pseudo-second-order kinetic model (R2 = 0.999) and the Langmuir isotherm model, suggesting that adsorption was uniform and homogenous process.



中文翻译:

磁铁矿-多壁碳纳米管上的聚乙烯用于从水中去除煤油

在这项研究中,制备了一种用于从水中去除煤油的纳米吸附剂。多壁碳纳米管 (MWCNT) 用浓 HNO 3(硝酸)功能化。随后,Fe 3 O 4(磁铁矿)纳米颗粒沉积在多壁碳纳米管上以制备磁铁矿/多壁碳纳米管(铁-多壁碳纳米管)纳米复合材料。然后,将聚乙烯添加到 Fe-MWCNTs 中以制造聚乙烯/磁铁矿/MWCNTs(PE/Fe-MWCNTs)新型纳米复合材料。使用 BET、FTIR、拉曼、XRD、TEM 和 SEM 表征纳米吸附剂。煤油-水模型混合物用于吸附测试。在吸附实验中分析了几个参数:吸附时间、吸附剂剂量、溶液 pH 值、溶液温度和煤油-水模型混合物中的煤油浓度。在每批实验之后,使用高效液相色谱法 (HPLC) 测定煤油浓度。每次实验后用磁场去除吸附剂。PE/Fe-MWCNTs 纳米复合材料的煤油吸附能力和去除效率(分别为 3560 mg/g 和 71.2%)高于 Fe-MWCNTs、ox-MWCNTs 和新鲜 MWCNTs(3154 mg/g 和 63.1%) ,分别为 2204 mg/g 和 44.0%,以及 2092 mg/g 和 41.8%)。煤油吸附遵循准二级动力学模型 (R2  = 0.999) 和 Langmuir 等温线模型,表明吸附是均匀和均质的过程。

更新日期:2021-09-22
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