在废水中通过Fe-Mn氧化物加载的污泥生物炭去除Cr (vi)
Chaoyang Yu1,2, Jinyan Yang1
1College of Architecture and Environment, Sichuan University Chengdu 610041 China yanyang@scu.edu.cn.
RSC advances
|April 15, 2024
概括
装有铁氧化物 (FMBC) 的泥生物炭有效地从废水中去除六价 (Cr(vi)). 这种吸附剂显示出高容量和良好的可重复使用性,表明其对环境修复的潜力.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理 处理水的方法
背景情况:
- 六价 (Cr(vi)) 是一种常见于工业废水中的有毒污染物.
- 需要有效和可持续的方法来从受污染的水源中去除Cr.
研究的目的:
- 为了制备含有Fe-Mn氧化物 (FMBC) 的污泥生物炭,以去除Cr.
- 调查Cr的FMBC的吸附性能和影响因素.
主要方法:
- 从污泥生物炭中制备FMBC.
- 批量吸附实验用于研究pH值,共存离子,接触时间,温度和初始Cr度的影响.
- 吸附动力学和异热模拟 (伪二次和兰木尔).
- 再生研究.再生研究.
主要成果:
- FMBC对Cr的吸附有很强的pH依赖性.
- 某些离子 (Pb2+,Cu2+,Ni2+,CO32-,SO42-,PO43-) 抑制了Cr的去除,而其他离子 (Na+,Mg2+,Ca2+,SiO32-,NO3-,Cl-) 没有显著的影响.
- 吸附遵循伪二次动力学和兰格穆尔异热模型.
- 最大Cr (vi) 吸附能力达到172.3毫克g-1.
- FMBC在处理电和矿物溶解废水方面表现良好.
- 在5个再生周期后,保持了高的去除效率.
结论:
- FMBC 是一个有前途的吸收剂,用于从废水中去除Cr.
- 吸附机制涉及Cr的吸附减少和再吸附.
- 由于其高容量和可重复使用性,FMBC显示出在废水处理中实际应用的潜力.
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