来自离子液活性核桃碳的高性能吸附剂:吸附和再生的研究
Liu Yang1, Wang Yungang1, Liu Tao1
1Key Laboratory of Thermo Fluid Science and Engineering (Ministry of Education), Xi'an Jiaotong University Xi'an 710049 Shannxi China ygwang1986@xjtu.edu.c.
RSC advances
|July 31, 2023
概括
离子激活剂将核桃转化为高性能活性炭,用于清除西普洛素. 与传统方法相比,这种新型活性炭显示出优越的吸附和再生能力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 吸附科学 吸附科学
背景情况:
- 核桃是一种丰富的纤维素类废物材料.
- 传统的活性炭生产通常涉及强化学品或高能量投入.
- 从水中有效地去除药物污染物,如西普洛素,是一个重大的环境挑战.
研究的目的:
- 用离子激活剂从核桃中制备活性炭的研究.
- 为了比较离子活性炭与物理或化学活性炭的吸附性能,用于清除西普洛素.
- 评估开发的活性炭的孔隙结构,表面积和再生潜力.
主要方法:
- 用离子激活剂对核桃进行处理,以产生活性炭.
- 福利埃变换红外光谱法 (FTIR) 和布鲁纳uer-Emmett-Teller (BET) 分析用于表征.
- 为了评估清除效率和比较不同活性碳,进行了西普罗素吸附实验.
- 进行了再生循环,以评估离子活性炭的可重复使用性.
主要成果:
- 通过KOH湿活化制备的活性炭显示出高特异性表面积 (1787.06 m2/g).
- 五种不同的离子活性碳表现出1302.01到2214.06m2/g的特定表面积,微孔体积从0.47到0.93cm3/g.
- 离子活性炭的吸附能力明显高于物理或化学活性炭.
- 离子活性炭D在40°C时实现了近100%的西普洛克萨辛去除,并且可以在10个周期内再生.
结论:
- 核桃的离子激活产生具有优越孔隙结构和吸附能力的活性碳.
- 用离子激活碳的性能优于用物理/化学方法制成的碳来去除西普洛素.
- 这些新型的离子活性碳显示出作为净化水的高效和可重复使用的吸附剂的巨大希望.
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