MICROBIAL COMPOSITION OF NATURAL Fe OXYHYDROXIDES AND ITS INFLUENCE ON ARSENIC AND ANTIMONY SORPTION
Author:
Lalinska-Volekova Bronislava1, Majerova Hana2, Kautmanova Ivona1, Farago Tomas3ORCID, Szaboova Dana1, Brcekova Jana4
Affiliation:
1. SNM-Natural History Museum 2. Cancer Research Institute, Department of Tumor Immunology, Biomedical Research Center, Slovak Academy of Sciences 3. Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geochemistry 4. Comenius University in Bratislava, Faculty of Natural Sciences, Department of Mineralogy, Petrology and Economic Geology
Abstract
The presented paper represents a comprehensive analysis of hydrous ferric oxides (HFOs) precipitated from Fe rich drainage waters contaminated by arsenic and antimony. Ochre samples from three abandoned Sb deposits were collected in three different seasons and were characterized from the mineralogical, geochemical, and microbiological point of view. They were formed mainly by poorly crystallized 2-line ferrihydrite, with the content of arsenic in samples ranging from 0.7 wt.% to 13 wt.% and content of antimony ranging from 0.025 wt.% up to 1.2 wt.%. Next-generation sequencing approach with 16S RNA, 18S RNA and ITS markers was used to characterize bacterial, fungal, algal, metazoal and protozoal communities occurring in the HFOs. In the 16S RNA, the analysis dominated bacteria (96.2 %) were mainly Proteobacteria (68.8 %) and Bacteroidetes (10.2 %) and to less extent also Acidobacteria, Actinobacteria, Cyanobacteria, Firmicutes, Nitrosprae and Chloroflexi. Alpha and beta diversity analysis revealed that the bacterial communities of individual sites do not differ significantly, and only subtle seasonal changes were observed.
This study provides evidence of diverse microbial communities that exist in drainage waters and are highly important in the process of mobilization or immobilization of the potentially toxic elements.
Publisher
STEF92 Technology
Reference9 articles.
1. [1] Davis, J.A., Kent, D.B., 1990. Chapter 5. Surface complexation modelling in aqueous geochemistry. In: Hochella, M.F., White, A.F. (Eds.), Mineral-Water Interface Geochemistry. Reviews in Mineralogy23(1), pp. 177�260. 2. [2] Scheinost, A.C., Rossberg, A., Vantelon, D., Xifra, I.O., Kretzschmar, R., Leuz, A.K., Funke, H., Johnson, A., 2006. Quantitative antimony speciation in shooting-range soils by EXAFS spectroscopy. Geochim. Cosmochim. Acta 70 (13), 3299�3312. 3. [3] Majzlan, J., Lalinska, B., Chovan, M., Jurkovic, L., Milovska, S., Gottlicher, J., 2007. The formation, structure, and ageing of As-rich hydrous ferric oxide at the abandoned Sb deposit Pezinok (Slovakia). Geochim. Cosmochim. Acta 71 (17), 4206�4220. 4. [4] Zhang, J., Stanforth, R., 2005. Slow adsorption reaction between arsenic species and goethite (?-FeOOH). Diffusion or heterogeneous surface reaction control. Langmuir 21 (7), 2895�2901. 5. [5] Majzlan, J., Lalinska, B., Chovan, M., Bla?, U., Brecht, B., Gottlicher, J., Steininger, R., Hug, K., Ziegler, S., Gescher, J., 2011. A mineralogical, geochemical, and microbiological assessment of the antimony � and arsenic-rich neutral mine drainage tailings near pezinok,Slovakia. Am. Mineral. 96 (1), 1�13.
|
|