Lost circulation in fractured strata during drilling incurs additional costs and leads to difficulties in promoting drilling safety and efficiency. Plugging-while-drilling is a feasible means to address lost circulation in fractured formations. The particle size distribution (PSD) of plugging particles is determined empirically; therefore, it is often not matched with the fracture sealing ...
Bacterial application in a sand column was carried out to determine the ability of the bacteria to retain calcite/vaterite on the sand column and evaluate its calcium carbonate deposition potential. In order to accomplish this, 60-cc syringes with silica sand that was 0.40–0.60 mm in diameter were used.
Calcite market size was valued at over USD 12.4 billion in 2023 and is estimated to register a CAGR of over 5.1% between 2024 & 2032 owing to increasing demand in construction. ... The construction sector within the calcite industry holds significant promise due to the myriad applications of calcite and the vital role of calcite-based building ...
6. Industrial Applications: Calcite's chemical properties make it valuable in various industrial applications. It is a key ingredient in the production of cement, where it acts as a flux to lower the melting temperature of the raw …
Purpose Ferrihydrite (Fh) and calcite were used as reactive capping layers for a eutrophic lake. The effectiveness of Fh and/or calcite capping for demobilizing phosphorus (P) in the sediment from the overlying water was tested, and the responses of carbon (C), nitrogen (N), and iron (Fe) to different capping treatments were analyzed as well. Materials and methods …
Microbially Induced Calcite Precipitation (MICP) through ureolytic bacteria has been considered as the most straightforward and energy-efficient process for engineering applications. In this paper, the potential of utilizing the …
Here we present a theoretical Density Functional Theory approach to obtain both elastic and photoelastic properties of calcite, considering realistic experimental conditions …
Geomaterials often require enhancement of their engineering properties to meet the design requirements in civil engineering applications. However, most ground improvement techniques are energy-intensive and environmentally invasive (DeJong et al., 2006).Recently, the microbially induced calcite precipitation (MICP) process has demonstrated its efficacy in …
Calcite is abundant, cost-effective, and ecofriendly and can be applied to soil for phosphate release. The alkaline nature of calcite provides a suitable pH range for the recovery of other nutrients (Zhang et al., 2012). Thus far, researchers have used either calcite alone or biochar embedded with metal ions as adsorbents.
The injection of carbon dioxide into geological formations, referred to as geo-sequestration, emerges as a promising approach to mitigate environmental impact. However, the success of CO2 geo-sequestration projects hinges on the wettability of rock/CO2/brine. This study examines wettability alteration in sandstone and carbonate reservoir rocks and their …
The highest Mgcontents in Mg-calcite are present in inclusions within Ti-clinohumite and diopside (X MgCO3 = 0.024 -0.072). Such Mg-calcite inclusions can be used to estimate minimum peak ...
Slickenfibres (Type I in Figs. 2 and 3 a and b), although a sometimes-misplaced term (in terms of being used more broadly for calcite fault plane precipitation), are generally one of the most desirable forms of fault precipitates in that it provides clear kinematic information such as the azimuth of slip and in many cases the sense of shear. . Slickenfibre calcite is a form of …
Calcite is harder than dolomite Dolomite has a white streak, whereas calcite has a dark gray streak Dolomite effervesces with direct application of HCI, whereas calcite only effervesces with HCl when it is powdered. Commodities are useful materials in the production of a variety of goods.
Calcite from the early, main and late ore-forming stages yielded low intercept ages of 11.80 ± 0.4 Ma, 10.9 ± 0.3 Ma and 10.6 ± 0.2 Ma, respectively, which constrain the Uragen …
RESUMO: The coexistence of calcite and dolomite in metamorphic rocks allows the application of a geothermometric method where the range of immiscibility between both minerals in the system CaCO 3 ...
The kinetics of fluoride sorption by calcite in the presence of metal ions (Co, Mn, Cd and Ba) have been investigated and modelled using the intra-particle diffusion (IPD), pseudo …
Calcite is a widespread mineral, recognized for its distinct crystalline form and vast availability. It's not only an integral part of many geological formations but also plays a crucial role in various …
Calcite and dolomite are both carbonate rocks with similar crystal structures. They are common minerals in strata and are abundant in nature. Both can be ground and widely used in many fields, but their composition and uses are very different. ... 【Application fields】: building materials, chemicals, metallurgy, coatings, papermaking, rubber ...
The solubility product (K sp) of calcite is very low (3.3 × 10 −9 mol L −1 at 25 °C), and for precipitation of calcite supersaturation of Ca 2+ and CO 3 2− must exist. Since calcite has very low K sp, supersaturation can be achieved by simply mixing Ca 2+ and CO 3 2− together in moderate concentrations.
In 1992, Ferris and Stehmeier [30] introduced the application of MICP for hydraulic control of geoformations by publishing a U.S. Patent titled "Bacteriogenic mineral plugging" (U.S. Patent 5143,155, September 1, 1992). This marked the beginning of using MICP for various applications such as (i) well closure, (ii) manipulating subsurface flow paths to enhance oil …
Dhami et al. studied the application of bacterial calcite on these ash bricks (FA and RHA) and found it to be very effective in reducing permeability and decreasing water absorption leading to enhanced durability of ash bricks. Challenges and issues. The field of biomineralization includes a multidisciplinary research involving experts from ...
Study with Quizlet and memorize flashcards containing terms like What physical property of minerals describes how they will break along a plane of weakness in a crystal lattice?, A mineral scratches a knife blade but does not scratch a streak plate. What is the hardness of the mineral?, You need to determine the specific gravity of a sample. After putting the sample on a lab …
Application of the calcite and dolomite Raman pressure sensors should be made on condition that no phase transitions or breakdown reactions occur under high P - T conditions, with errors of ±50 MPa and ± 5% at …
Conclusion: Foliar application of processed calcite particles alleviated most of the adverse effects of water stress on grapevine photosynthesis. This was associated with enhanced g s in the whole plant canopy. Significance and impact of the study: In the context of climate change, grapevine will most likely experience long periods of drought ...
Facile synthesis of calcite 1D nanoparticles with different Mg 2+-doping amount.. In water, nanorods doped with Mg 2+ 37,000 ppm or higher were thermally very stable.. In air, nanorods doped with Mg 2+ 10,000 ppm or higher were thermally very stable.. STEM observations revealed that Mg-calcite nanoclusters cover the nanorod surfaces.
Calcite is a rock-forming mineral with a chemical formula of CaCO3. It is extremely common and found throughout the world in sedimentary, metamorphic, and igneous rocks. Some geologists consider it to be a "ubiquitous mineral" - one that is found everywhere. …
Purpose Soil loss by rainfall is a serious problem in civil and environmental engineering. In this study, microbially induced calcite precipitation (MICP) was applied to reduce rainfall-induced soil loss. Furthermore, the effects of particle size and organic matter content were investigated. Materials and methods A mixture of Sporosarcina pasteurii, 450 …
reached in its application. This typically results in the less effective calcite inhibition, and subsequent calcite deposition in the wellbore, and in some cases may also result in the degradation products blocking the downhole capillary tubing used to deliver the antiscalant chemical inside the wellbore.
Calcite uses will be primarily in construction materials to help create buildings, roads, walls, and other good building materials. The uses of calcite have also found their way into the building of cosmetic type structures. …
In recent years, the research and applications of organic depressants of calcium-containing minerals have been widely reported [15,16].Jiao et al. studied the effect of polymer polysaccharide pectin in the separation of scheelite and calcite [].At pH values of 7–9, pectin could strongly depress calcite but has little depressive effect on scheelite.
Application of the calcite and dolomite Raman pressure sensors should be made on condition that no phase transitions or breakdown reactions occur under high P-T conditions, with errors of ±50 MPa and ± 5% at pressures below and above 1.0 GPa, respectively.
Soil through the Application of Microbially Induced Calcite Precipitation Anthony Smith1, Martin Pritchard 1, Alan Edmondson2, Shafakat Bashir1
With the aims to (1) re-evaluate the application of blocky calcite veins without identifiable syn-kinematic features in dating deformation and (2) re-construct the tectonic–fault–fluid evolutionary history of the Tabei Uplift, Tarim Basin, this study starts with the widespread blocky calcite veins in the Ordovician of the Tabei Uplift. ...
