尼日利亚杰巴金矿尾矿的理化性质、重金属组成和金属抗性微生物

IF 2.2 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Geomicrobiology Journal Pub Date : 2023-04-06 DOI:10.1080/01490451.2023.2196278

A. El-Imam, F. B. Auta, H. Okoro, M. Orosun, Ahmad M. Olabode, Adeola R. Bamidele

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引用次数: 0

摘要

摘要尾矿是一种独特的微生物来源，具有独特的特性。本研究旨在确定一个活跃的手工金矿不同位置的土壤和水的化学成分，以及与尾矿相关的微生物。测定了尾矿土壤和水的理化性质、HM的种类及其致癌和非致癌作用。然后使用补充有金属的营养琼脂分离重金属抗性细菌（HMRB）。结果表明，土壤和水样的pH值和温度在6.2-6.6和29-30之间 °C。一个位置的癌症风险估计增加寿命（ILCR）为7.9E − 6为最高。检测到的重金属包括砷（As）、汞（Hg）、镉（Cd）和铅（Pb）。分离出21个HMRB，它们被推定为葡萄球菌属、芽孢杆菌属、耐盐盐盐球菌、嗜色葡萄球菌、纤维营养性芽孢杆菌、残留芽孢杆菌、球孢芽孢杆菌和链球菌属。对16S RNA基因序列的分析显示，分离物MS2与溶瘤无尿杆菌具有98.01%的相似性。HMs的存在和水平说明了手工金矿工人承受癌症和非癌症影响的高风险。可以进一步分析分离的HMRB，以确定该位点可能的生物修复。

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Physicochemical Properties, Heavy Metal Composition, and Metal Resistant Microorganisms Associated with Gold Mine Tailings in Jebba, Nigeria

Abstract Mine tailings are a source of unique microorganisms with novel characteristics. This study aims to determine the chemical composition of the soil and water from different locations of an active artisanal gold mine and the microorganisms associated with the mine tailings. The physiochemical analysis of tailings soil and water, HM species, and their carcinogenic and non-carcinogenic effects were determined. Heavy metal resistant bacteria (HMRB) were then isolated using nutrient agar supplemented with metals. The results showed that pH and temperature of the soil and water samples ranged between 6.2- 6.6 and 29–30 °C respectively. The estimated incremental lifetime cancer risk (ILCR) from one location was 7.9E − 6 was the highest. The HMs detected includes Arsenic (As), Mercury (Hg), Cadmium (Cd), and Lead (Pb). Twenty-one HMRB were isolated and they are putatively identified as Staphylococcus spp., Bacillus sp., Salinicoccus halodurans, Staphylococcus chromogenes, Paenibacillus cellulositrophicus, Paenibacillus residui, Sporosarcina globispora, and Streptococcus sp. Analysis of the 16S RNA genes sequences revealed that isolate MS2 has 98.01% similarity to Aneurinibacillus aneurinilyticus. The presence and levels of HMs elucidates the high risk of cancerous and non-cancerous effects borne by artisan gold miners. The isolated HMRB can be further analyzed for possible bioremediation of the site.

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来源期刊

Geomicrobiology Journal 环境科学-地球科学综合

CiteScore

4.80

自引率

8.70%

发文量

审稿时长

3.3 months

期刊介绍： Geomicrobiology Journal is a unified vehicle for research and review articles in geomicrobiology and microbial biogeochemistry. One or two special issues devoted to specific geomicrobiological topics are published each year. General articles deal with microbial transformations of geologically important minerals and elements, including those that occur in marine and freshwater environments, soils, mineral deposits and rock formations, and the environmental biogeochemical impact of these transformations. In this context, the functions of Bacteria and Archaea, yeasts, filamentous fungi, micro-algae, protists, and their viruses as geochemical agents are examined. Articles may stress the nature of specific geologically important microorganisms and their activities, or the environmental and geological consequences of geomicrobiological activity. The Journal covers an array of topics such as: microbial weathering; microbial roles in the formation and degradation of specific minerals; mineralization of organic matter; petroleum microbiology; subsurface microbiology; biofilm form and function, and other interfacial phenomena of geological importance; biogeochemical cycling of elements; isotopic fractionation; paleomicrobiology. Applied topics such as bioleaching microbiology, geomicrobiological prospecting, and groundwater pollution microbiology are addressed. New methods and techniques applied in geomicrobiological studies are also considered.