Log in

Relevant bibliographies by topics / CaO/CaCO3 cycle / Journal articles

To see the other types of publications on this topic, follow the link: CaO/CaCO3 cycle.

Journal articles on the topic 'CaO/CaCO3 cycle'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'CaO/CaCO3 cycle.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Toledo Arana, Javier, Juan José Torres, Diego F. Acevedo, Cristian O. Illanes, Nelio A. Ochoa, and Cecilia L. Pagliero. "One-Step Synthesis of CaO-ZnO Efficient Catalyst for Biodiesel Production." International Journal of Chemical Engineering 2019 (March 10, 2019): 1–7. http://dx.doi.org/10.1155/2019/1806017.

Full text

Abstract:

Biodiesel is the best candidate for fuel oil replacement, and to obtain it, heterogeneous catalysts offer large advantages: they can be separated from the product and reused. This work reviews a novel one-step synthesis of CaO-ZnO catalytic particles suitable for biodiesel production. The catalyst is synthesized using an original simple method that involves mixing of ZnO with CaCO3 and subsequent calcination. The CaO-ZnO microparticles obtained present an average size of 2 μm. This material shows the characteristic crystallographic cubic structure of CaO and the hexagonal phase of ZnO. The tem

APA, Harvard, Vancouver, ISO, and other styles

2

Abanades, Juan Carlos. "The maximum capture efficiency of CO2 using a carbonation/calcination cycle of CaO/CaCO3." Chemical Engineering Journal 90, no. 3 (2002): 303–6. http://dx.doi.org/10.1016/s1385-8947(02)00126-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Berstad, David, Rahul Anantharaman, and Kristin Jordal. "Post-combustion CO2 capture from a natural gas combined cycle by CaO/CaCO3 looping." International Journal of Greenhouse Gas Control 11 (November 2012): 25–33. http://dx.doi.org/10.1016/j.ijggc.2012.07.021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Wang, Iwei, Shihui Wang, and Zhenshan Li. "Utilizing Limestone Alone for Integrated CO2 Capture and Reverse Water-Gas Reaction in a Fixed Bed Reactor: Employing Mass and Gas Signal Analysis." Processes 12, no. 8 (2024): 1548. http://dx.doi.org/10.3390/pr12081548.

Full text

Abstract:

The integrated CO2 capture and utilization coupled with the reverse water-gas shift reaction (ICCU-RWGS) presents an alternative pathway for converting captured CO2 into CO in situ. This study investigates the effectiveness of three calcium-based materials (natural limestone, sol-gel CaCO3, and commercial CaCO3) as dual-functional materials (DFMs) for the ICCU-RWGS process at intermediate temperatures (650–750 °C). Our approach involves a fixed-bed reactor coupled with mass spectrometry and in situ Fourier transform infrared (FTIR) measurements to examine cyclic CO2 capture behavior, detailed

APA, Harvard, Vancouver, ISO, and other styles

5

Luisetto, Igor, Maria Rita Mancini, Livia Della Seta, et al. "CaO–CaZrO3 Mixed Oxides Prepared by Auto–Combustion for High Temperature CO2 Capture: The Effect of CaO Content on Cycle Stability." Metals 10, no. 6 (2020): 750. http://dx.doi.org/10.3390/met10060750.

Full text

Abstract:

Cycling high temperature CO2 capture using CaO–based solid sorbents, known as the calcium looping (CaL) process, is gaining considerable scientific and industrial interest due to the high theoretical sorbent capacity (0.78 gCO2/gCaO), the low specific cost, and the negligible environmental impact of the employed materials. In this work, we investigated the self–combustion synthesis of CaO–CaZrO3 sorbents with different CaO contents (40, 60, and 80 wt%) for use in the CaL process. CaZrO3 was used as a spacer to avoid CaO grains sintering at high temperature and to reduce the diffusional resista

APA, Harvard, Vancouver, ISO, and other styles

6

Aulia, Tia, Rico Aditia Prahmana, Prihadi Setyo Darmanto, Firman Bagja Juangsa, Raden Dewi Ghita Ghaida Permatasari, and Khoeril Walad. "Estimating the dimensions of integrated calciner and carbonator for calcium looping process in a 7500 TPD capacity of cement plant." Journal of Mechatronics, Electrical Power, and Vehicular Technology 15, no. 2 (2024): 117–25. https://doi.org/10.55981/j.mev.2024.1003.

Full text

Abstract:

The calciner in cement factories plays a crucial role, particularly in the decomposition of calcium carbonate (CaCO3) as primary raw materials into calcium oxide (CaO) and carbon dioxide (CO2), a significant contributor to greenhouse gas (GHG) emissions. Hence, an integrated system has been proposed, combining conventional cement plants with calcium looping (CaL) cycles to reduce CO2 emissions. CaL facilitates the capture of CO2 by CaO, forming CaCO3 as raw material for cement production. Given that CaL effectively reduces CO2 emissions, the integration process with conventional cement plants

APA, Harvard, Vancouver, ISO, and other styles

7

Hadiyanto, Hadiyanto, Sri Puji Lestari, and Widayat Widayat. "Preparation and Characterization of Anadara Granosa Shells and CaCO3 as Heterogeneous Catalyst for Biodiesel Production." Bulletin of Chemical Reaction Engineering & Catalysis 11, no. 1 (2016): 21. http://dx.doi.org/10.9767/bcrec.11.1.402.21-26.

Full text

Abstract:

<p>Nowadays, the use of homogenous catalyst has been gradually reduced for its operational reason. The homogenous catalyst leads in difficulty of separation after the process completed and the life cycle is shorter. Therefore, most of researches are introducing heterogenous catalyst for its substitution. This research was aimed to evaluate the use of shell of Anadara granosa and CaCO3 as source of CaO based catalyst through impregnation method. The preparation of the catalyst was started by decomposition of shells and CaCO3 at temperature of 800 oC for 3 hours, followed by impregnation a

APA, Harvard, Vancouver, ISO, and other styles

8

Widianingsih, Suci, Ika Yanti, Azlan Kamari, and Is Fatimah. "Thermal Conversion of Coral Waste and its Utilization as Low-Cost Catalyst for Biodiesel Production." Science and Technology Indonesia 9, no. 4 (2024): 866–75. http://dx.doi.org/10.26554/sti.2024.9.4.866-875.

Full text

Abstract:

This study investigates the thermal conversion of waste coral and its utilization as a heterogeneous catalyst for biodiesel production from soybean oil. In this work, waste coral is calcined at varied temperatures of 800, 900, and 1000°C, and the effect of the calcination temperature on the physicochemical character of the solid is evaluated through Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and basicity measurement. The results show that the higher temperature facilitates the conversion of CaCO3 of the aragonite and calcite phases in raw waste co

APA, Harvard, Vancouver, ISO, and other styles

9

Fedunik-Hofman, Bayon, and Donne. "Comparative Kinetic Analysis of CaCO3/CaO Reaction System for Energy Storage and Carbon Capture." Applied Sciences 9, no. 21 (2019): 4601. http://dx.doi.org/10.3390/app9214601.

Full text

Abstract:

The calcium carbonate looping cycle is an important reaction system for processes such as thermochemical energy storage and carbon capture technologies, which can be used to lower greenhouse gas emissions associated with the energy industry. Kinetic analysis of the reactions involved (calcination and carbonation) can be used to determine kinetic parameters (activation energy, pre-exponential factor, and the reaction model), which is useful to translate laboratory-scale studies to large-scale reactor conditions. A variety of methods are available and there is a lack of consensus on the kinetic

APA, Harvard, Vancouver, ISO, and other styles

10

Ávila, I., A. Mortari, A. M. Santos, and P. M. Crnkovic. "THE CALCIUM LOOPING CYCLE STUDY FOR CAPTURING CARBON DIOXIDE APPLIED TO THE ENERGY GENERATION." Revista de Engenharia Térmica 12, no. 2 (2013): 28. http://dx.doi.org/10.5380/reterm.v12i2.62041.

Full text

Abstract:

The calcium looping process (Ca-L) is a promising technology to reduce of the carbon dioxide (CO2) emissions when applied in energy generation systems. Ca-based materials (usually limestone) are used in this process as CO2 sorbents. Thus, the CO2 capture occurs by the reversible reaction between calcium oxide (CaO) and CO2, resulting in the calcium carbonate form (CaCO3). Compared to other technologies applied to carbon sequestration process, the Ca-L offers additional advantages such: the use of fluidized bed technology that is already well established; this process occurs at high temperature

APA, Harvard, Vancouver, ISO, and other styles

11

Zhang, Yongqing, Huawei Liu, Jia Lu, Qianghui Xu, and Chao Xu. "An integrated energy storage system coupling Ca(OH)2/CaO/CaCO3 thermochemical energy storage, supercritical CO2 cycle, and CO2 capture." Journal of Energy Storage 130 (September 2025): 117487. https://doi.org/10.1016/j.est.2025.117487.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Nikulshina, V., M. E. Gálvez, and A. Steinfeld. "Kinetic analysis of the carbonation reactions for the capture of CO2 from air via the Ca(OH)2–CaCO3–CaO solar thermochemical cycle." Chemical Engineering Journal 129, no. 1-3 (2007): 75–83. http://dx.doi.org/10.1016/j.cej.2006.11.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Moghtaderi, Behdad, Priscilla Tremain, and John Warner. "Pressurized Regenerative Calcium Cycle for Utility-Scale Energy Storage: A Techno-Economic Assessment." Processes 12, no. 8 (2024): 1778. http://dx.doi.org/10.3390/pr12081778.

Full text

Abstract:

The University of Newcastle (UON) and Jord International Pty Ltd. (Jord) have jointly developed a novel concept for the storage of energy from renewable and fossil fuel sources. The process, referred to as the pressurized regenerative calcium cycle (PRC2), relies on cyclic carbonation and calcination of CaO/CaCO3, in which low-cost electrical energy (i.e., off-peak, or excess generation from renewables) drives the calcination reaction and electricity is generated as required through the carbonation reaction. Initial proof-of-concept testing of the process was previously conducted within an exi

APA, Harvard, Vancouver, ISO, and other styles

14

Chafidz, Achmad. "Polypropylene/CaCO<sub>3</sub> Nanocomposites Fabricated Using Masterbatch: Effect of Nano-CaCO<sub>3</sub> Loadings and Re-Processing on the Melting Properties." Materials Science Forum 1067 (August 10, 2022): 73–78. http://dx.doi.org/10.4028/p-2u9f04.

Full text

Abstract:

Polypropylene filled calcium carbonate (CaCO3) nanocomposites were fabricated by employing melt blending/compounding method using masterbatch. To investigate the efffect of reprocessing on the melting properties of PP/CaCO3 nanocomposites, the melt compounding process was conducted twice (two cycles). The effect of nano-CaCO3 loadings (i.e. 5, 10 and 15 wt%) on the melting properties of PP/CaCO3 nanocomposites were also studied. The meling properties of the nanocomposites were analyzed by using a DSC (Differential Scanning Calorimetry). Additionally, the nanocomposites samples were also analyz

APA, Harvard, Vancouver, ISO, and other styles

15

Yang, Ying, Yingjie Li, Xianyao Yan, Jianli Zhao, and Chunxiao Zhang. "Development of Thermochemical Heat Storage Based on CaO/CaCO3 Cycles: A Review." Energies 14, no. 20 (2021): 6847. http://dx.doi.org/10.3390/en14206847.

Full text

Abstract:

Due to the inconsistency and intermittence of solar energy, concentrated solar power (CSP) cannot stably transmit energy to the grid. Heat storage can maximize the availability of CSP plants. Especially, thermochemical heat storage (TCHS) based on CaO/CaCO3 cycles has broad application prospects due to many advantages, such as high heat storage density, high exothermic temperature, low energy loss, low material price, and good coupling with CSP plants. This paper provided a comprehensive outlook on the integrated system of CaO/CaCO3 heat storage, advanced reactor design, heat storage condition

APA, Harvard, Vancouver, ISO, and other styles

16

Yuan, Yi, Yingjie Li, and Jianli Zhao. "Development on Thermochemical Energy Storage Based on CaO-Based Materials: A Review." Sustainability 10, no. 8 (2018): 2660. http://dx.doi.org/10.3390/su10082660.

Full text

Abstract:

The intermittent and inconsistent nature of some renewable energy, such as solar and wind, means the corresponding plants are unable to operate continuously. Thermochemical energy storage (TES) is an essential way to solve this problem. Due to the advantages of cheap price, high energy density, and ease to scaling, CaO-based material is thought as one of the most promising storage mediums for TES. In this paper, TES based on various cycles, such as CaO/CaCO3 cycles, CaO/Ca(OH)2 cycles, and coupling of CaO/Ca(OH)2 and CaO/CaCO3 cycles, were reviewed. The energy storage performances of CaO-based

APA, Harvard, Vancouver, ISO, and other styles

17

Xu, Yunfei, Yingjie Li, Chunxiao Zhang, et al. "High-Temperature Thermochemical Heat Storage Performance of CaO Honeycombs During CaO/CaCO₃ Cycles." Energy & Fuels 35, no. 20 (2021): 16882–93. http://dx.doi.org/10.1021/acs.energyfuels.1c02274.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Zhang, Donghao, and Wenbin Hu. "Improving Cycle Life of Zinc–Air Batteries with Calcium Ion Additive in Electrolyte or Separator." Nanomaterials 13, no. 12 (2023): 1864. http://dx.doi.org/10.3390/nano13121864.

Full text

Abstract:

The electrolyte carbonation and the resulting air electrode plugging are the primary factors limiting the cycle life of aqueous alkaline zinc–air batteries (ZABs). In this work, calcium ion (Ca2+) additives were introduced into the electrolyte and the separator to resolve the above issues. Galvanostatic charge–discharge cycle tests were carried out to verify the effect of Ca2+ on electrolyte carbonation. With the modified electrolyte and separator, the cycle life of ZABs was improved by 22.2% and 24.7%, respectively. Ca2+ was introduced into the ZAB system to preferentially react with CO32− ra

APA, Harvard, Vancouver, ISO, and other styles

19

Bian, Zhiguo, Yingjie Li, Yu Ren, Yi Fang, and Jianli Zhao. "Thermochemical heat storage performance of CaO particles under fluidization in coupled CaO/Ca(OH)2 cycles and CaO/CaCO3 cycles." Journal of Energy Storage 56 (December 2022): 106045. http://dx.doi.org/10.1016/j.est.2022.106045.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Noor Zuhaira, Abd Aziz, and Mohamed Rahmah. "Effect of Calcium Carbonate on Thermal Properties of CaCO₃/Kenaf/HDPE and CaCO₃/Rice Husk/HDPE Composites." Advanced Materials Research 812 (September 2013): 175–80. http://dx.doi.org/10.4028/www.scientific.net/amr.812.175.

Full text

Abstract:

In this research, the thermal properties of 30% filler loading of natural fibers with varying filler loadings of calcium carbonate (CaCO3) were studied. CaCO3 was compounded using twin-screw extruder with rice husk/high density polyethylene (HDPE) and kenaf/HDPE composites to produce composites. Compounded composites were prepared and tested for thermal properties. The thermal stability of the components was examined by thermogravimetric analysis (TGA) and differential scanning calorimetric (DSC) to identify the influence of CaCO3 filler loading on thermal properties of the composites. The cyc

APA, Harvard, Vancouver, ISO, and other styles

21

Koeve, W., O. Duteil, A. Oschlies, P. Kähler, and J. Segschneider. "Evaluating CaCO<sub>3</sub>-cycle modules in coupled global biogeochemical ocean models." Geoscientific Model Development Discussions 6, no. 4 (2013): 6117–55. http://dx.doi.org/10.5194/gmdd-6-6117-2013.

Full text

Abstract:

Abstract. The marine CaCO3 cycle is an important component of the oceanic carbon system and directly affects the cycling of natural and the uptake of anthropogenic carbon. In numerical models of the marine carbon cycle, the CaCO3 cycle component is often evaluated against the observed distribution of alkalinity. Alkalinity varies in response to the formation and remineralisation of CaCO3 and organic matter. However, it also has a large conservative component, which may strongly be affected by a deficient representation of ocean physics (circulation, evaporation, and precipitation) in models. H

APA, Harvard, Vancouver, ISO, and other styles

22

Zhang, Youhao, Yingjie Li, Yunfei Xu, et al. "CaO/CaCO3 thermochemical energy storage performance of MgO/ZnO co-doped CaO honeycomb in cycles." Journal of Energy Storage 66 (August 2023): 107447. http://dx.doi.org/10.1016/j.est.2023.107447.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Koeve, W., O. Duteil, A. Oschlies, P. Kähler, and J. Segschneider. "Methods to evaluate CaCO<sub>3</sub> cycle modules in coupled global biogeochemical ocean models." Geoscientific Model Development 7, no. 5 (2014): 2393–408. http://dx.doi.org/10.5194/gmd-7-2393-2014.

Full text

Abstract:

Abstract. The marine CaCO3 cycle is an important component of the oceanic carbon system and directly affects the cycling of natural and the uptake of anthropogenic carbon. In numerical models of the marine carbon cycle, the CaCO3 cycle component is often evaluated against the observed distribution of alkalinity. Alkalinity varies in response to the formation and remineralization of CaCO3 and organic matter. However, it also has a large conservative component, which may strongly be affected by a deficient representation of ocean physics (circulation, evaporation, and precipitation) in models. H

APA, Harvard, Vancouver, ISO, and other styles

24

Bai, Xiao Juan, Zhe Wu, and Nan Feng. "Degradation of ABS in ABS/CaCO₃ Composites during Reprocessing." Advanced Materials Research 455-456 (January 2012): 845–50. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.845.

Full text

Abstract:

Acrylonitrile-Butadiene-Styrene (ABS)/CaCO3 composites were reprocessed under normal conditions. The effects of reprocessing on the degradation of ABS were investigated by Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC). The mechanical properties of the reprocessed materials were measured. In this paper, a method to evaluate the degradation of ABS in ABS/CaCO3 composites by FTIR was described. The results show that within the range of the reprocessing cycles studied, as the number of reprocessing cycles increased, the impact strength of composite was sign

APA, Harvard, Vancouver, ISO, and other styles

25

Rodaev, Vyacheslav V., and Svetlana S. Razlivalova. "The Zr-Doped CaO CO2 Sorbent Fabricated by Wet High-Energy Milling." Energies 13, no. 16 (2020): 4110. http://dx.doi.org/10.3390/en13164110.

Full text

Abstract:

We fabricated the Zr-doped CaO sorbent for high-temperature CO2 capture by the wet high-energy co-milling of calcium carbonate and natural zirconium dioxide (baddeleyite) for the first time. The morphology of the material was examined by scanning electron microscopy, energy-dispersive X-ray analysis and X-ray diffraction. Its CO2 uptake capacity was determined using thermogravimetric analysis. After 50 carbonation–calcination cycles, the Zr-doped CaO sorbent characterized by a high enough CO2 uptake capacity of 8.6 mmol/g and unchanged microstructure due to CaZrO3 nanoparticles uniformly distr

APA, Harvard, Vancouver, ISO, and other styles

26

Huang, Xinran, Jiang Li, Mingxiao Su, Xiyun Jiao, Qiuming Wu, and Zhe Gu. "Exploration of Microbially Induced Carbonate Precipitation Technology for the Protection of Soil on Agricultural Drainage Ditch Slopes." Water 17, no. 13 (2025): 2010. https://doi.org/10.3390/w17132010.

Full text

Abstract:

Microbially induced carbonate precipitation (MICP) offers an eco-friendly approach to stabilize porous materials. This study evaluates its feasibility for protecting agricultural drainage ditch slopes through laboratory tests. Liquid experiments assessed calcium carbonate (CaCO3) precipitation rates under varying bacteria–cementation solution ratios (BCR), cementation solution concentrations (1–2 mol/L), and urease inhibitor (NBPT) contents (0–0.3%). Soil experiments further analyzed the effects of solidified layer thickness (4 cm vs. 8 cm) and curing cycles on soil stabilization. The results

APA, Harvard, Vancouver, ISO, and other styles

27

Li, Caili, Yingjie Li, Chunxiao Zhang, Yehui Dou, Yunfei Xu, and Jianli Zhao. "Thermochemical energy storage performance of papermaking soda residue during CaO-CaCO3 cycles." Journal of CO2 Utilization 62 (August 2022): 102072. http://dx.doi.org/10.1016/j.jcou.2022.102072.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Ramnarain, Vinavadini, Dris Ihiawakrim, and Ovidiu Ersen. "In-situ Analysis of the Lime Cycle (CaCO₃ – CaO - Ca(OH)₂ – CaCO₃) by Environmental TEM." Microscopy and Microanalysis 27, S2 (2021): 45–46. http://dx.doi.org/10.1017/s1431927621013222.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Batukaev, Abdul-Malik A., Anatoly P. Endovitsky, Andrey G. Andreev, et al. "Ion association in water solution of soil and vadose zone of chestnut saline solonetz as a driver of terrestrial carbon sink." Solid Earth 7, no. 2 (2016): 415–23. http://dx.doi.org/10.5194/se-7-415-2016.

Full text

Abstract:

Abstract. The assessment of soil and vadose zone as the drains for carbon sink and proper modeling of the effects and extremes of biogeochemical cycles in the terrestrial biosphere are the key components to understanding the carbon cycle, global climate system, and aquatic and terrestrial system uncertainties. Calcium carbonate equilibrium causes saturation of solution with CaCO3, and it determines its material composition, migration and accumulation of salts. In a solution electrically neutral ion pairs are formed: CaCO30, CaSO40, MgCO30, and MgSO40, as well as charged ion pairs CaHCO3+, MgHC

APA, Harvard, Vancouver, ISO, and other styles

30

Hlaing, Nwe Ni, Srimala Sreekantan, Radzali Othman, et al. "Novel Aragonite CaCO₃Adsorbents: Synthesis, Characterization and CO₂ Adsorption." Advanced Materials Research 911 (March 2014): 415–19. http://dx.doi.org/10.4028/www.scientific.net/amr.911.415.

Full text

Abstract:

In this paper, one dimensional nanorod CaCO3 adsorbents were synthesized via hydrothermal method by varying the amount of polyacrylamide (PAM). The XRD results indicated that all of the characteristic peaks of synthesized adsorbents were matched well with the aragonite CaCO3 phase. FE-SEM analysis showed one dimensional nanorod structures with diameter of 40 - 70 nm and lengths up to micrometer. TG results exhibited CaCO3 adsorbents synthesized with 0.4 and 0.6 g of polyacrylamide possessed high CO2 adsorption capacities for first carbonation/calcination cycle (0.86 and 0.79 g-CO2/g-sorbent) w

APA, Harvard, Vancouver, ISO, and other styles

31

Ma, Zhangke, Yingjie Li, Wan Zhang, Yuzhuo Wang, Jianli Zhao, and Zeyan Wang. "Energy storage and attrition performance of limestone under fluidization during CaO/CaCO3 cycles." Energy 207 (September 2020): 118291. http://dx.doi.org/10.1016/j.energy.2020.118291.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Gangstø, R., M. Gehlen, B. Schneider, L. Bopp, O. Aumont, and F. Joos. "Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO<sub>3</sub> dissolution." Biogeosciences 5, no. 4 (2008): 1057–72. http://dx.doi.org/10.5194/bg-5-1057-2008.

Full text

Abstract:

Abstract. The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO3 dissolution. Aragonite production is parameterized as a function of mesozooplankton biomass and aragonite saturation state of ambient waters. Observation-based estimates of marine carbonate production and dissolution are well reproduced by the model and about 60% of the combined CaCO3 water column dissolution from aragonite and calcite is simulated above 2000 m. In contrast, a calcite-only version yields a much smaller fraction. This suggests th

APA, Harvard, Vancouver, ISO, and other styles

33

Mohd Daud, Farah Diana, Nur Asyikin Kosen, Mudrikah Sofia Mahmud, Norshahida Sariffudin, and Hafizah Hanim Mohd Zaki. "Preparation of CaO-SiO₂ Adsorbent for Potential CO₂ Capture via Dry Mixing Method." Materials Science Forum 1025 (March 2021): 343–48. http://dx.doi.org/10.4028/www.scientific.net/msf.1025.343.

Full text

Abstract:

Calcium-looping technology is defined as one of the most desirable methods of carbon capture, utilization and storage (CCUS). However, because of sintering, rapid deactivation of CaO-sorbents is currently a major barrier to this technology. The stability of calcium based sorbent may be enhance by incorporating them with inert support materials such as MgO, Al2O2, ZrO2 and SiO2. For this study, calcium based sorbent has been incorporate with silica obtained from rice husk ash. CaO-SiO2 sorbents are prepared using physical dry mixing method which is much simpler compared to other available metho

APA, Harvard, Vancouver, ISO, and other styles

34

Li, Chien-Cheng, Ui-Ting Wu, and Hong-Ping Lin. "Cyclic performance of CaCO3@mSiO2 for CO2 capture in a calcium looping cycle." J. Mater. Chem. A 2, no. 22 (2014): 8252–57. http://dx.doi.org/10.1039/c4ta00516c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Gangstø, R., M. Gehlen, B. Schneider, L. Bopp, O. Aumont, and F. Joos. "Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO<sub>3</sub> dissolution." Biogeosciences Discussions 5, no. 2 (2008): 1655–87. http://dx.doi.org/10.5194/bgd-5-1655-2008.

Full text

Abstract:

Abstract. The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO3 dissolution. Aragonite production is parameterized as a function of mesozooplankton biomass and aragonite saturation state of ambient waters. Observation-based estimates of marine carbonate production and dissolution are well reproduced by the model and about 60% of the combined CaCO3 water column dissolution from aragonite and calcite is simulated above 2000 m. In contrast, a calcite-only version yields a much smaller fraction. This suggests th

APA, Harvard, Vancouver, ISO, and other styles

36

Rodaev, Vyacheslav V., Svetlana S. Razlivalova, Alexander I. Tyurin, and Vladimir M. Vasyukov. "Electrospun Zr-Doped CaO Sorbent for CO2 Capture." Nanomaterials 13, no. 4 (2023): 747. http://dx.doi.org/10.3390/nano13040747.

Full text

Abstract:

A Zr-doped CaO sorbent for high-temperature CO2 capture was fabricated using electrospinning. The nanofiber sorbent with an average filament diameter of about 160 nm is characterized by an initial CO2 uptake capacity of 12.1 mmol/g, a specific surface area of 79 m2/g, an indentation Young’s modulus of 520 MPa, and a hardness of 1.6 MPa. After 50 carbonation/decarbonation cycles, the sorbent has a decent CO2 uptake capacity of 9.7 mmol/g due to the uniform distribution of CaZrO3 in the CaO nanofibers to prevent CaO grain growth caused by CaCO3 sintering. It is revealed that the sorbent CO2 upta

APA, Harvard, Vancouver, ISO, and other styles

37

Florin, Nicholas H., and Andrew T. Harris. "Reactivity of CaO derived from nano-sized CaCO3 particles through multiple CO2 capture-and-release cycles." Chemical Engineering Science 64, no. 2 (2009): 187–91. http://dx.doi.org/10.1016/j.ces.2008.10.021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Smith, S. V., and J. P. Gattuso. "Linking the lithogenic, atmospheric, and biogenic cycles of silicate, carbonate, and organic carbon in the ocean." Biogeosciences Discussions 6, no. 4 (2009): 6579–99. http://dx.doi.org/10.5194/bgd-6-6579-2009.

Full text

Abstract:

Abstract. Geochemical theory describes long term cycling of atmospheric CO2 between the atmosphere and rocks at the Earth surface in terms of rock weathering and precipitation of sedimentary minerals. Chemical weathering of silicate rocks takes up atmospheric CO2, releases cations and HCO3− to water, and precipitates SiO2, while CaCO3 precipitation consumes Ca2+ and HCO3− and releases one mole of CO2 to the atmosphere for each mole of CaCO3 precipitated. At steady state, according to this theory, the CO2 uptake and release should equal one another. In contradiction to this theory, carbonate pr

APA, Harvard, Vancouver, ISO, and other styles

39

Evers, B. M., T. C. Ko, J. Li, and E. A. Thompson. "Cell cycle protein suppression and p21 induction in differentiating Caco-2 cells." American Journal of Physiology-Gastrointestinal and Liver Physiology 271, no. 4 (1996): G722—G727. http://dx.doi.org/10.1152/ajpgi.1996.271.4.g722.

Full text

Abstract:

Despite intensive efforts, the exact cellular mechanisms leading to gut differentiation and development remain largely undefined. The cyclins, the cyclin-dependent kinases (Cdks), and the Cdk inhibitors (e.g., p21 and p27) are proteins that are important for cell cycle progression, subsequent growth inhibition, and differentiation of various cell types. The purpose of our study was to better define the role of these cell cycle proteins in gut differentiation using the Caco-2 human cell line, which spontaneously differentiates to a small bowel phenotype, as demonstrated by induction of sucrase-

APA, Harvard, Vancouver, ISO, and other styles

40

Uc, Aliye, and Bradley E. Britigan. "Does Heme Oxygenase-1 Have a Role in Caco-2 Cell Cycle Progression?" Experimental Biology and Medicine 228, no. 5 (2003): 590–95. http://dx.doi.org/10.1177/15353702-0322805-52.

Full text

Abstract:

Intestinal epithelium undergoes a rapid self-renewal process characterized by the proliferation of the crypt cells, their differentiation into mature enterocytes as they migrate up to the villi, followed by their shedding as they become senescent villus enterocytes. The exact mechanism that regulates the intestinal epithelium renewal process is not well understood, but the differential expression of regulatory genes along the crypt-villus axis may have a role. Heme oxygenase-1 (HO-1) is involved in endothelial cell cycle progression, but its role in the intestinal epithelial cell turnover has

APA, Harvard, Vancouver, ISO, and other styles

41

Gralik, Guilherme, Alessandra Thomsen, Cristian Moraes, Fabiano Raupp-Pereira, and Dachamir Hotza. "Processing and characterization of CaTiO3 perovskite ceramics." Processing and Application of Ceramics 8, no. 2 (2014): 53–57. http://dx.doi.org/10.2298/pac1402053g.

Full text

Abstract:

Calcium titanate (CaTiO3) ceramics with perovskite structure were produced by solid state reaction. Calcium carbonate (CaCO3) and titanium dioxide (TiO2) were mixed (in molar ratios 1/1 and 3/2), and the obtained mixtures were calcined at 1150 ?C in successive thermal cycles. The obtained samples were characterized by differential thermal analysis, thermogravimetry, X-ray diffraction, measurement of particle size distribution and linear thermal shrinkage. XRD results indicated that the samples have perovskite CaTiO3 structure with small amount of secondary CaO and TiO2 phases, and their phase

APA, Harvard, Vancouver, ISO, and other styles

42

Hagedorn, Monica, and Andreas Ziegler. "Analysis of Ca2+ uptake into the smooth endoplasmic reticulum of permeabilised sternal epithelial cells during the moulting cycle of the terrestrial isopodPorcellio scaber." Journal of Experimental Biology 205, no. 13 (2002): 1935–42. http://dx.doi.org/10.1242/jeb.205.13.1935.

Full text

Abstract:

SUMMARYIn terrestrial isopods, large amounts of Ca2+ are transported across anterior sternal epithelial cells during moult-related deposition and resorption of CaCO3 deposits. Because of its toxicity and function as a second messenger, resting cytosolic Ca2+ levels must be maintained below critical concentrations during epithelial Ca2+transport, raising the possibility that organelles play a role during Ca2+ transit. We therefore studied the uptake of Ca2+into Ca2+-sequestering organelles by monitoring the formation of birefringent calcium oxalate crystals in permeabilised anterior and posteri

APA, Harvard, Vancouver, ISO, and other styles

43

Ray, Ramesh M., Shirley A. McCormack, and Leonard R. Johnson. "Polyamine depletion arrests growth of IEC-6 and Caco-2 cells by different mechanisms." American Journal of Physiology-Gastrointestinal and Liver Physiology 281, no. 1 (2001): G37—G43. http://dx.doi.org/10.1152/ajpgi.2001.281.1.g37.

Full text

Abstract:

The polyamines spermidine and spermine and their precursor, putrescine, are required for the growth and proliferation of eukaryotic cells. This study compares and contrasts growth arrest caused by polyamine depletion in the untransformed IEC-6 cell line with that in the p53-mutated colon cancer Caco-2 cell line. Cells were grown in the presence or absence of α-difluoromethylornithine (DFMO), a specific inhibitor of ornithine decarboxylase, the first rate-limiting enzyme in the synthesis of polyamines. Depletion of polyamines inhibited the growth of both cell lines equally and over the same tim

APA, Harvard, Vancouver, ISO, and other styles

44

Vincent, Julia, Béatrice Colin, Isabelle Lanneluc, et al. "La biocalcification bactérienne en milieu marin et ses applications." Matériaux & Techniques 110, no. 6 (2022): 606. http://dx.doi.org/10.1051/mattech/2023004.

Full text

Abstract:

La précipitation du carbonate de calcium (CaCO3) biologiquement induite en milieu marin joue un rôle important dans le cycle biogéochimique du carbone. Cette biocalcification est gouvernée par quatre facteurs clés : le taux de carbone inorganique dissous dont dépend le taux de carbonates (CO32−) dans le système, le taux d’ions calciques (Ca2+), le pH et la disponibilité des sites de nucléation c’est-à-dire des zones de cristallisation primaire de la phase solide du minéral. Les bactéries impliquées dans la biocalcification marine vont alors agir sur un ou plusieurs de ces facteurs. Ce processu

APA, Harvard, Vancouver, ISO, and other styles

45

Shi, Zhaowei, Cong Luo, Donglong Lai, et al. "A modified pore evolution particle model applied to CaCO3 decomposition and CaO sintering during calcium looping CO2 cycles." Separation and Purification Technology 355 (March 2025): 129733. http://dx.doi.org/10.1016/j.seppur.2024.129733.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Fang, Yi, Jianli Zhao, Chunxiao Zhang, and Yingjie Li. "Exothermic Performance of the Calcined Limestone Determined by Exothermic Temperature under Fluidization during CaCO3/CaO Energy Storage Cycles." Journal of Thermal Science 32, no. 5 (2023): 1784–96. http://dx.doi.org/10.1007/s11630-023-1865-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Sun, Hao, Yingjie Li, Zhiguo Bian, Xianyao Yan, Zeyan Wang, and Wenqiang Liu. "Thermochemical energy storage performances of Ca-based natural and waste materials under high pressure during CaO/CaCO3 cycles." Energy Conversion and Management 197 (October 2019): 111885. http://dx.doi.org/10.1016/j.enconman.2019.111885.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Daud, Farah Diana Mohd, Nurul Amirah Izzati Ahmad, Mudrikah Sofia Mahmud, Norshahida Sariffudin, and Hafizah Hanim Mohd Zaki. "Two-Step Synthesis of Ca-Based MgO Hybrid Adsorbent for Potential CO₂Capturing Application." Materials Science Forum 981 (March 2020): 369–74. http://dx.doi.org/10.4028/www.scientific.net/msf.981.369.

Full text

Abstract:

Carbon capture and storage (CCS) is one of the method in reducing carbon dioxide (CO2) emissions into the atmosphere. CO2 capturing using calcium oxide (CaO) solid sorbents has been considered as an advanced concept for CO2 capture and recovery. However, the adsorption capacity of CaO decreases during repeated adsorption/desorption cycles. The stability of Ca-based sorbents during cyclic runs can be achieved via the incorporation of inert support materials. Among the available inert materials, MgO is most promising for CO2 due to high stability and a high Tammann temperature. Most of Ca- based

APA, Harvard, Vancouver, ISO, and other styles

49

Wang, Zi, Wanjun Lin, Meina Shi та ін. "Involucrasin B Inhibits the Proliferation of Caco-2 Cells by Regulating the TGFβ/SMAD2-3-4 Pathway". Molecules 29, № 3 (2024): 686. http://dx.doi.org/10.3390/molecules29030686.

Full text

Abstract:

(1) Background: Colorectal cancer (CRC) is the third most common malignant tumor worldwide and the second most common cause of cancer death. However, effective anti-CRC drugs are still lacking in clinical settings. This article investigated the anti-proliferative effect of involucrasin B on CRC Caco-2 cells. (2) Methods: This study employed a sulforhodamine B (SRB) method, colony formation experiments, flow cytometry, FastFUCCI assay, dual luciferase assay, and Western blot analysis for the investigation. (3) Results: The SRB method and colony formation experiments showed that involucrasin B e

APA, Harvard, Vancouver, ISO, and other styles

50

WHEATLY, MICHELE G., and LORI A. IGNASZEWSKI. "Electrolyte and Gas Exchange during the Moulting Cycle of a Freshwater Crayfish." Journal of Experimental Biology 151, no. 1 (1990): 469–83. http://dx.doi.org/10.1242/jeb.151.1.469.

Full text

Abstract:

Whole-animal net electrolyte fluxes (Ca2+, apparent H+, titratable acidic equivalents, ammonia, Na+, Cl−, K+, Mg2+, phosphate and sulphate) and respiratory gas exchange were monitored throughout the moulting cycle in juvenile freshwater crayfish Procambarus clarkii (Girard) at 21 °C. Intermoult crayfish were essentially in ion balance. As crayfish approached ecdysis (−3 days, where t=0 is the day when the cuticle is shed), there was a net efflux of Ca2+ (−1000μmolkg−1 h−1) correlated with a corresponding uptake of acidic equivalents (or base output) of +2000μmolkg−1 h−1. Following ecdysis, bot

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!