Background

Currently, water polluted to antibiotics such as ciprofloxacin (CIP) has been a main concern for the ecosystem and environment. Hence, the removal of these emerging contaminants is essential.

Method

In this research, a hybrid process including magnetic carbon nanomaterial/NiFe₂O₄ promoted atmospheric non-thermal dielectric barrier discharge plasma jet (APJ) as an environmentally friendly hybrid system was evaluated for eliminating CIP from polluted synthetic effluent. Multi walled carbon nanotubes (MWCNTs), activated carbon formed using charcoal (ChAC), and the walnut shell was applied as the carbonous source. Besides, to solve the separation problem, the charcoal, as optimum sample, was magnetized with NiFe₂O₄ (ChAC/NiFe₂O₄) using the treatment solvothermal route. Characterizations of all carbon materials were carried out by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller and Barrett-Joyner-Halenda and vibrating-sample magnetometer analyses.

Finding

The degradation amount for 80 mg/L CIP gained 48.8, 80.8, and 98.1% over APJ system + walnut shell, MWCNTs, and ChAC, respectively, after 90 min at 15 kV_p-p output voltage and 0.05 g/L of catalyst loading. The results showed the ChAC/NiFe₂O₄ (87.2%) had less removal than ChAC (98.1%), but it has magnetic properties that can facilitate the separation problem.

中文翻译：

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磁性碳纳米材料/NiFe2O4协同催化降解环丙沙星促进冷大气压等离子体射流：木炭、多壁碳纳米管和核桃壳的影响

背景

目前，受到环丙沙星（CIP）等抗生素污染的水体已成为生态系统和环境的主要关注点。因此，去除这些新出现的污染物至关重要。

方法

在这项研究中，包括磁性碳纳米材料/NiFe ₂ O ₄促进大气非热介质阻挡放电等离子体射流 (APJ) 的混合工艺作为一种环境友好的混合系统被评估用于消除污染合成流出物中的 CIP。多壁碳纳米管 (MWCNTs)、使用木炭形成的活性炭 (ChAC) 和核桃壳用作碳源。此外，为了解决分离问题，作为最佳样品的木炭用NiFe ₂ O ₄ (ChAC/NiFe ₂ O ₄) 使用处理溶剂热法。通过 X 射线衍射、场发射扫描电子显微镜、透射电子显微镜、Brunauer-Emmett-Teller 和 Barrett-Joyner-Halenda 以及振动样品磁力计分析对所有碳材料进行了表征。

发现

_{在 15 kV p-p}输出电压和 0.05 g/L 催化剂负载条件下90 分钟后，80 mg/L CIP 的降解量分别比 APJ 系统 + 核桃壳、MWCNT 和 ChAC 分别提高了 48.8、80.8 和 98.1% 。结果表明，ChAC/NiFe ₂ O ₄ (87.2%) 的去除率低于 ChAC (98.1%)，但它具有可以促进分离问题的磁性。