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DOI	10.1016/j.chemosphere.2022.133585
	Interaction behaviors of Cr(VI) at biotite-water interface in the presence of HA: Batch, XRD and XPS investigations
	Luo, Dongxia; Geng, Rongyue; Zhang, Youxian; Li, Ping; Liang, Jianjun; Fan, Qiaohui; Qiang, Shirong
通讯作者	Zhang, YX (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China. ; Qiang, SR (通讯作者)，Lanzhou Univ, Sch Basic Med Sci, Inst Physiol, Key Lab Preclin Study New Drugs Gansu Prov, Lanzhou 730000, Peoples R China.
发表日期	2022
ISSN	0045-6535
EISSN	1879-1298
卷号	293
英文摘要	The interaction behaviors of heavy metals and micaceous minerals are extremely important to understand the environmental behaviors of heavy metals. In this work, the interaction behaviors of Cr(VI) and biotite in the presence and absence of HA were studied combining batch and spectroscopic approaches. Batch experiments showed that biotite had the ability to remove Cr(VI) from the water and the removal markedly increased with decreasing pH. However, sorption of total Cr onto biotite increased with increasing pH (2.0-4.0), whilst quickly decreased above pH similar to 4.0. It was worth noting that redox process of Cr(VI) to Cr(III), caused by structural Fe(II) on biotite, was another important factor for the high removal of Cr(VI) in a pH range of 2.0-4.0. Ionic strength also influenced Cr(VI) removal that Cr(VI) removal became higher with increasing ion strength. The presence of HA did not show obvious macroscopic effect on Cr(VI) removal, however, HA could cover biotite surface, and promote the sorption of total Cr onto biotite and attenuate the reduction effect caused by Fe(II) on biotite. Spectroscopic approaches, like FT-IR, XRD and XPS further confirmed the existence of Cr(III) on biotite interacting with Cr(VI) and the reduction of Cr(VI) to Cr(III) was drove by the Fe(II) dissolving from biotite to Fe(III). Further, sorption effect and reduction effect competitively contributed to the Cr(VI) removal by biotite, and reduction effect played a more important role at lower pH.
关键词	NI(II) SORPTION MECHANISM HUMIC-ACID EFFICIENT REMOVAL ADSORPTION PH TH(IV)IONS NANOCOMPOSITE DESORPTION KAOLINITE
英文关键词	Biotite; Cr(VI); Sorption; Reduction; HA
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000759669400007
来源期刊	CHEMOSPHERE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254891
作者单位	[Luo, Dongxia; Zhang, Youxian] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China; [Qiang, Shirong] Lanzhou Univ, Sch Basic Med Sci, Inst Physiol, Key Lab Preclin Study New Drugs Gansu Prov, Lanzhou 730000, Peoples R China; [Luo, Dongxia; Geng, Rongyue; Li, Ping; Liang, Jianjun; Fan, Qiaohui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Luo, Dongxia] Gansu Anal & Res Ctr, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Luo, Dongxia,Geng, Rongyue,Zhang, Youxian,et al. Interaction behaviors of Cr(VI) at biotite-water interface in the presence of HA: Batch, XRD and XPS investigations[J]. 中国科学院西北生态环境资源研究院,2022,293.
APA	Luo, Dongxia.,Geng, Rongyue.,Zhang, Youxian.,Li, Ping.,Liang, Jianjun.,...&Qiang, Shirong.(2022).Interaction behaviors of Cr(VI) at biotite-water interface in the presence of HA: Batch, XRD and XPS investigations.CHEMOSPHERE,293.
MLA	Luo, Dongxia,et al."Interaction behaviors of Cr(VI) at biotite-water interface in the presence of HA: Batch, XRD and XPS investigations".CHEMOSPHERE 293(2022).