Microbial Domains and Their Role in the Formation of Minerals

Abdullah, Shorish Mustafa; Kolo, Kamal; Konhauser, Kurt O.; Pirouei, Mohammad

doi:10.1007/978-3-030-80807-5_1

Cited by 3 publications

(4 citation statements)

References 240 publications

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“…On the other hand, some metals may be toxic to microbes after the interaction between the microbe and minerals, such as Cs, Ai, cd, and Hg when they accumulate in high concentration in the absence of metabolizing activities for these metals. Thus, the interaction leads to the complete biogeochemical cycles of the elements due to the process of transformations (immobilization and mobilization) (Violante et al, 2008;Abdullah et al, 2022).…”

Section: Microbe Mineral Interactionsmentioning

confidence: 99%

Bacterial and Fungal-Mineral Interactions and their Application in Bioremediation – A Review

Muksy¹,

Kolo²,

Gorony³

2023

J. Ecol. Eng.

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Geomicrobiology is an interdisciplinary field of research that studies the role of microorganisms during the geological process from the inception of the earth and their perspective on the future of the earth. Scientists focused on microbe mineral interactions in various processes such as bioweathering, transformation, and the formation of biominerals to better understand the role of microbes in geological processes. Those processes are part of the geochemical cycles of elements, some of which are essential nutrients for life and others are toxic to life. Microorganisms, especially fungi and bacteria, as well as their exudates, are the major agents of geomicrobiology due to their important geological activities, which have a role in the bioweathering of rocks and minerals. Mobilization and immobilization of metals as well as the formation of new biominerals occur because of these activities and their fast growth. They are well known to be used in different strategies of bioremediation and they are genetically engineered to become more specific in removing and dissolving pollutants in the environment. The goal of the review was to outline the role of bacteria and fungi in bioremediation as well as in important geological processes, such as mineral alteration, bioweathering and biomineralization.

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Section: Microbe Mineral Interactionsmentioning

confidence: 99%

Bacterial and Fungal-Mineral Interactions and their Application in Bioremediation – A Review

Muksy¹,

Kolo²,

Gorony³

2023

J. Ecol. Eng.

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“…in Table (1); all runs were conducted in duplicate, and the data were averaged. A set of control experiments were carried out under the same conditions without bacteria.…”

Section: X-ray Diffraction (Xrd Analysis)mentioning

confidence: 99%

“…Figure (1) shows the differences in the final yield of CaCO 3 precipitated by the three bacterial strains in comparison to their consortium. It was found that the consortium precipitated more CaCO 3 than each strain separately.…”

Section: Microbially Induced Calcium Carbonate Precipitation (Miccp)mentioning

confidence: 99%

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Factors Affecting Calcite Bio-precipitation via Urea Hydrolyzing Bacterial Consortium

Abdelgalil

2022

Advances in Environmental and Life Sciences

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Microbially induced calcite precipitation (MICP) refers to the biomineralization process involving the synthesizing of calcium carbonate by microorganisms. The production of urease by urea-hydrolyzing bacteria, which results in carbonate precipitation, is affected by environmental factors including calcium concentration, bacterial concentration, pH and temperature. This study aims to investigate some factors affecting calcite bio-precipitation via the urea-hydrolyzing consortium. A consortium of three ureasepositive, calcite-precipitating strains of Bacillus was selected. XRD analysis of the precipitant confirmed the polymorph type. The studied factors included bacterial cell count, pH, temperature, urea concentration, and calcium concentration. In order to identify the optimum range of each studied factor, the dry weight of the precipitated calcite was measured for all investigated ranges of the studied factors after two weeks of incubation gravimetrically. A multi-level factorial experiment was designed to investigate the impact of interaction between different levels of factors using the statistical software package MINITAB 17. Three main factors were selected, bacterial cell count, urea and calcium concentration. The fourth run, among twelve runs of a multi-level designed experiment, which had the following concentrations (0.3 M urea, 15 g/l CaCl 2 .H 2 O, and low bacterial inoculum (10 5 CFU/50ml)), precipitated 0.43 g of calcite, while the rest of the runs precipitated lower dry weights. It was found that there was no significant increase in the precipitated calcite weight for the performed runs. According to the analysis of factorial design results, the effect of urea concentration as a factor on precipitation rate in the current study was found to be more effective than other studied factors.

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Mineralogical and geochemical features of the Sirna Mn‐Fe deposit in the Kurdistan region, northeastern Iraq: Unveiling the formation of a Mn‐Fe silica gel plume via serpentinization hydrothermal mechanisms

Mohammad,

Latif,

Pirouei

et al. 2024

Resource Geology

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The study probes the mineralogical and geochemical features of manganese‐iron deposits located in the Sirna area, which is a part of the late Cretaceous Walash Group in the Zagros suture zone, situated in the Kurdistan region of northeastern Iraq. Our investigation comprised field surveys, examination of ore petrography, besides using x‐ray diffraction, SEM‐EDS analysis, x‐ray fluorescence analyses, and inductively coupled plasma mass spectrometry techniques conducted on a set of representative samples. A significant Mn‐Fe ovoidal ore body, extending across 25 meters in diameter, protrudes between the lower strata of soft gray shale and the upper strata of massive limestone within the Walash group. The deposit exhibits a distinct separation into three layers: a lower horizon characterized by abundance of oxide of silicon, an upper horizon enriched in manganese oxide, and a transition layer dominated by hematite (Fe2O3). From a geochemical perspective, there is a gradual decrease in Fe2O3 and SiO2 from the lower to the upper part of the deposit, while MnO, BaO, and SO3 demonstrate a gradual increase. The co‐association of Mn‐Fe‐mineralization in a small restricted tabular ore body suggests that they are genetically related. Within the Sirna manganese‐iron deposit, the prevalent manganese and iron mineral phases are braunite, hollandite, and hematite. Concurrently, the gangue minerals in this deposit encompass cryptocrystalline spheroidal quartz, barite, calcite, and apatite. The Sirna Mn‐Fe deposit exhibits geochemical characteristics such as elevated levels of MnO (reaching up to 68 wt.%) and significant Fe2O3 content (up to 45 wt.%) in the upper manganese and transitional iron horizons, respectively. The Co/Zn ratio (0.28), Ce/La ratio (1.78), low levels of transitional elements (Co + Ni + Cu <0.01 wt.%), and varying concentrations of Ba (up to 6.9 wt.%) suggest that the Siran Mn‐Fe deposit is likely originated from a manganese‐iron silica gel plume that separated from hydrothermal fluids linked to serpentinization. This process is thought to have occurred in the mantle wedge along subduction zone, typically within an arc tectonic environment. Moreover, the presence of remnants of micro‐organisms such as EPS layers, different types of filaments, which are densely covered by biominerals, are important evidence of microbial effect in the mineralization of Mn‐Fe in the study area.

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Microbial Domains and Their Role in the Formation of Minerals

Cited by 3 publications

References 240 publications

Bacterial and Fungal-Mineral Interactions and their Application in Bioremediation – A Review

Bacterial and Fungal-Mineral Interactions and their Application in Bioremediation – A Review

Factors Affecting Calcite Bio-precipitation via Urea Hydrolyzing Bacterial Consortium

Mineralogical and geochemical features of the Sirna Mn‐Fe deposit in the Kurdistan region, northeastern Iraq: Unveiling the formation of a Mn‐Fe silica gel plume via serpentinization hydrothermal mechanisms

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