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Magnetoactive Compound Based on Humic Acid and Magnetite as a Sorbent for Heavy Metals
Russian Journal of Applied Chemistry ( IF 0.9 ) Pub Date : 2020-10-22 , DOI: 10.1134/s1070427220090086
A. Kh. Zhakina , O. V. Arnt , Ye. P. Vassilets , V. Ya. Shur , A. S. Volegov

Abstract

In the process of in situ synthesis using ultrasound, a magnetoactive sorbent based on humic acid and magnetite was produced for the extraction of heavy metals from industrial wastewater by magnetic solid-phase extraction. When exposed to ultrasound, substances are dispersed, which results in an increase in the specific surface area of the studied sorbent and the opening of inaccessible pores on its surface. Humic acid, which is part of the magnetoactive sorbent, is a stabilizer of the size of magnetite nanoparticles. The composition and sorption properties of a magnetoactive compound with respect to heavy metal ions Pb(II), Cu(II), Zn(II), Sr(II), Fe(III), and Al(III) were investigated. The dependence of the sorption value of the studied metal ions on the temperature and pH of the waste water was examined, the sorption capacity of the magnetoactive compound and the degree of waste water purification were determined. It was found that the maximum extraction of metal ions Pb(II), Cu(II), Al(III), Zn(II), Sr(II), Fe(III) from wastewater occurs at 25°C and pH 6.5, after additional sorption post-treatment, the content of Pb(II), Cu(II) and Zn(II) ions decreases by more than 15 times, and of Al(III), Pb(II), and Fe(III) ions, more than 12 times. The maximum degree of water purification from metal ions Pb(II), Cu(II), Al(III), Zn(II), Sr(II), and Fe(III) is 98.8, 83.1, 81.5, 78.1, 69.5, and 42.5%, respectively.



中文翻译:

基于腐殖酸和磁铁矿的重金属吸附剂

摘要

原位的过程通过超声合成,生产了一种基于腐殖酸和磁铁矿的磁活性吸附剂,用于通过磁性固相萃取从工业废水中萃取重金属。当暴露于超声波下时,物质会分散,这会导致所研究吸附剂的比表面积增加,并在其表面上形成难以接近的孔。腐殖酸是磁活性吸附剂的一部分,是磁铁矿纳米颗粒大小的稳定剂。研究了磁活性化合物对重金属离子Pb(II),Cu(II),Zn(II),Sr(II),Fe(III)和Al(III)的组成和吸附性能。检查了所研究的金属离子的吸附值对废水温度和pH的依赖性,测定磁活性化合物的吸附能力和废水净化程度。结果发现,废水中金属离子Pb(II),Cu(II),Al(III),Zn(II),Sr(II),Fe(III)的最大提取发生在25°C和pH 6.5的条件下,经过额外的吸附后处理,Pb(II),Cu(II)和Zn(II)离子的含量降低了15倍以上,Al(III),Pb(II)和Fe(III)离子的含量降低了,超过12次。从金属离子Pb(II),Cu(II),Al(III),Zn(II),Sr(II)和Fe(III)净化水的最大程度为98.8、83.1、81.5、78.1、69.5,和42.5%。Pb(II),Cu(II)和Zn(II)离子的含量降低了15倍以上,而Al(III),Pb(II)和Fe(III)离子的含量降低了12倍以上。从金属离子Pb(II),Cu(II),Al(III),Zn(II),Sr(II)和Fe(III)净化水的最大程度为98.8、83.1、81.5、78.1、69.5,和42.5%。Pb(II),Cu(II)和Zn(II)离子的含量降低了15倍以上,而Al(III),Pb(II)和Fe(III)离子的含量降低了12倍以上。从金属离子Pb(II),Cu(II),Al(III),Zn(II),Sr(II)和Fe(III)净化水的最大程度为98.8、83.1、81.5、78.1、69.5,和42.5%。

更新日期:2020-10-30
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