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从废水中有效地去除 (VI) 基的磁性多壁碳纳米管与深度环氧溶剂相结合

Lina Wang¹, Yun Zhu², Lei Ma²

¹School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China; Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming, 650504, PR China.

|July 1, 2024

概括

磁性多壁碳纳米管有效地从废水中去除超过95%的有毒六价 (Cr(VI)). 绿色溶剂可实现高脱吸率,允许在水处理应用中重复使用吸附剂.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

工业废水中的六价 (Cr(VI)) 对健康构成重大风险,包括癌症.
有效的吸附剂对于快速有效地从污染水中去除重金属至关重要.
开发具有高表面积和活跃地点的新材料对于先进的废水处理至关重要.

研究的目的:

合成和表征磁性多壁碳纳米管 (MMWCNTs) 作为有效的Cr6吸附剂.
通过响应表面方法来优化Cr(VI) 除去的吸附参数.
用绿色溶剂研究MMWCNTs的脱和再生能力.

主要方法:

通过对多壁碳纳米管涂抹磁性纳米颗粒来合成MMWCNTs.
使用FTIR,XRD,TG,VSM,BET和EDS进行表征.
通过响应表面方法来优化吸附剂剂量,接触时间和温度;吸附动力学和异温研究;使用深溶解剂 (DES) 进行脱吸.

主要成果:

MMWCNTs的颗粒大小约为30nm,表面活性点和介质孔丰富.
优化条件实现了超过95%的Cr(VI) 清除率.
吸附遵循准二次动力学和弗洛伊德利希等热;使用DES的脱吸率超过90%;在五个周期后保持高容量.

结论:

新型MMWCNTs是从废水中去除Cr (VI) 的高效吸附剂.
深度浸泡溶剂 (DES) 提供了一种高效的绿色方法,用于吸附剂的吸收和再生.
与DES相结合的MMWCNT显示出可持续工业废水处理的巨大潜力.

关键词:

吸附方式吸附方式吸附方式这就是Cr (VI) 的意思.深层欧性溶剂深层欧性溶剂磁性复合材料磁性复合材料多壁碳纳米管多壁碳纳米管.

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