Selective calcium removal. 0c11233 Corpus ID: 221219282; Selective Pseudocapacitive Deionization of Calcium Ion in Copper Hexacyanoferrate. Calculation of Daily Solids Production Rates 4. 2002). After selective removal to soft dentin, the test group received a universal adhesive (n=38), whereas the control group indirect pulp protection with Calcium hydroxide (n=38). In this study, we developed a simple yet highly effective method to achieve calcium-selective removal in an electrosorption process by coating the cathode with a calcium-selective nanocomposite (CSN) layer using an aqueous Particularly in the deeper cavity, excessive removal of tooth structure would tend to increase the risk of a pulpal exposure, resulting in irreversible damage to the odontoblastic palisade and death of primary odontoblasts. 5 V. 2019. Molinari R, Avci AH, Curcio E, Domene DS, Villa González C, Gallart JJE, Argurio P. In recent years, the selective removal of specific ions from the feed solution has become a critical issue in many industrial processes, Semantic Scholar extracted view of "Selective removal of calcium from sulfate solutions containing magnesium and nickel using aqueous two phase systems (ATPS)" by L. 1021/acsami. This paper has addressed the techno-economic feasibility regarding the selective removal of sodium (Na) and calcium (Ca) from low-rank sub-bituminous coal, aiming to reduce the ash slagging and fouling propensity in the pulverized coal-fired boilers. In addition, Adorna et al. Their physicochemical properties of the synthesized composite beads were characterized using various techniques, including FESEM, EDX, FTIR, and TGA. 3H 2 O) and its composite with alginate gel polymer have been studied by the batch and column methods. Calculation of Daily Chemical Requirements IX. WATRES. 445 - 453 View PDF View This critical review discusses the most fundamental aspects of selective phosphate removal processes and highlights gains from the latest developments of phosphate-selective After calcite removal, brucite is selectively precipitated using pristine graphite cathode and anode at an applied potential of 3. Selective Calcium Removal at Near-Ambient Temperature in a Multimineral Recovery Selective caries removal (to firm or soft dentine): Caries is removed to dentine that is hard on probing in the periphery of the lesion, and to dentine which appears softened and still cuttable Sodium carbonate can be used to selectively remove calcium ions from brine but is associated with drawbacks, including low calcium removal efficiency, slow settling of the After calcite removal, brucite is selectively precipitated using pristine graphite cathode and anode at an applied potential of 3. Calculate the required lime dosage as Cao, and sketch the In the qualitative evaluation, the control groups presented a higher risk of pulp exposure in relation to the selective removal. 25 was found to mitigate silica scaling effectively via formation of calcium-silicate-hydrate phases (C-S-H phases). At 5 years, The selective caries removal is increasingly spreading in daily clinical practice because this minimally invasive technique treats deep carious lesion and decreases the risk of Selective, stepwise, or nonselective removal of carious tissue: which technique offers lower risk for the treatment of dental caries in permanent teeth? A systematic review and In permanent teeth, selective carious tissue removal should be performed, as this technique results in lower numbers of pulp complications, such as pulp exposure, as compared with We found that the PEDOT:PSS coatings significantly enhanced the preferential permeability of Ca 2+ over Na + relative to unmodified electrodes and produced a preferential Selective caries excavation disrupts the carious biofilm ecology while simultaneously minimising over-preparation of tooth structure and injury to the dentine-pulp Selective caries removal (to firm or soft dentine): Caries is removed to dentine that is hard on probing in the periphery of the lesion, and to dentine which appears softened and still cuttable Evidence favoring selective caries removal suggests the advantages of preserving tooth vitality, avoiding pulpal damage, and, consequently, needing to be referred for Selective removal of chromium from laterite residue with high content of iron by the co-operation of phosphoric acid and In order to recover chromium, calcium hydroxide was utilized to Removal of calcium ions from water by selective electrosorption using target-ion specific nanocomposite electrode Water Res. to remove only calcium) (b) carbonate hardness removal, and (c) total hardness removal. Chem. By assessing spectral characteristics, the modified DECT algorithm allows for a selective removal of calcium independent of blooming. Because sulfate in CaF 2 resources causes Abstract. The suitability of using polyethyleneimine (PEI) for selective removal of calcium and magnesium salts by an ultrafiltration process was studied in terms of optimum polymer loading at reasonable Removal of heavy metal ions from wastewater is of prime importance for a clean environment and human health. In an attempt to evaluate the application range of this separation method, batch scale tests (bottom/top phase weight = 1) were carried out using synthetic test solutions at two Zeng, Ling, Li, Luo, Sui and Guan used 0. What is the finished water hardness? (10 marks) Catt 63 mg/l ++ Mg 15 mg/1 W. Request PDF | Simultaneous selective removal of cesium and cobalt from water using calcium alginate-zinc ferrocyanide-Cyanex 272 composite beads | Composite beads consisting of Ca alginate mixed Recently, selective phosphorus removal from aqueous solution has been a highly desirable strategy to combat eutrophication due to the increasingly stringent phosphorous emission standards. Selective calcium and magnesium removal can be implemented using a bioelectrochemical cell (BEC) that consists of two chambers with an anion exchange Question: Consider the softening by selective calcium carbonate removal of a raw water with a bar graph as drawn below. 5 years follow up), predominantly related to a lower risk of pulpal exposure. Calcium hydroxide nanorods with dosage of 2 g/L were adopted for fluoride precipitation in acidic electroplating industrial wastewater containing 75 mg/L In addition, higher calcium removal efficiency was reported for carbon cloth placed over composite electrodes because of the higher wettability of carbon cloth [58]. The insights from this review DOI: 10. 8, 9 Selective caries removal, on the other hand, arrests carious lesion activity while simultaneously reducing the risk of pulpal exposure and preserving the Selective removal in one session seemed to be a good management option. Recently, titanium metal production by molten salt electrolysis using CaCl2 as molten salt and TiO2 or rutile (94 to 96 pct TiO2) as feedstock has been drawing attention. 3, shows extent of calcium sulfite removal under 5 atm CO 2 pressure and 100 cm 3 /g to be comparable to residue treated with stoichiometric excess of acid. In the meta-analysis, the selective carious tissue Conventional SO2 scrubbing agents, namely calcium oxide and zeolites, are often used to remove SO2 using a strong or irreversible adsorption-based process. 2 mg/L Ca 2+ and 2. 7. Modern removal technologies including air-abrasion, These were then managed using calcium hydroxide-based direct pulp capping procedures. However, In this paper, MgO loaded biochar (MBC) was synthesized by co-pyrolysis of soybean straw and MgCl2·6H2O for selective remove Pb and Cd from calcium-rich wastewater. Calculate the lime and soda ash dosage needed (in mg/L as CaCO3) (a) for selective calcium removal (i. The uptake properties of Cs+ for ammonium molybdophosphate (AMP, (NH 4) 3 PMo 12 O 40. 7 kJ/mol compared to other inorganic Complete removal of carious tissue or non-selective caries removal is no longer recommended due to the increased risk of pulp exposure and unnecessary weakening of the tooth [Duncan et al. @article{Leong2021ElectrochemicallyAL, title={Electrochemically activated layered manganese oxide for selective removal of calcium and magnesium ions in hybrid capacitive deionization}, author={Zhi Yi Leong and Jintao Zhang and Sareh Vafakhah and Meng Ding and Lu Guo and Hui Ying Yang}, journal={Desalination}, year= {2021 The present study investigated the removal of calcium from sulfate solutions containing magnesium and nickel using aqueous two phase systems (ATPS) at room temperature. 05. Santos et al. , 2012, Dávila-Pulido and Uribe-Salas, Calcium removal ef ciency ranged from about 92% to 98. 16 Mg 2+, with high fluoride removal of 95. 5%, while magnesium was totally removed by precipitation, thanks to the very high pH values achieved ( > 13). Abstract. Technologies capable of selective removal of target contaminants from water are highly desirable to achieve “fit-for-purpose” treatment. In this study, we developed a simple yet highly effective method to achieve calcium-selective removal in an electrosorption process by coating the cathode with a calcium-selective nanocomposite (CSN) layer using an aqueous phase process. This study also reveals the importance of Selective removal is considered the best management option in the short term (with 1. In this work, two fumarate-based metal-organic frameworks (MOFs) were synthesized for the selective removal of Therefore, this paper reviews the possibility of selective HCl removal from calcium- and sodium-based sorbents in acidic gases and the removal mechanism, which provides a reference value for subsequent studies. This study also reveals the importance of Request PDF | Sulfonated polymer coating enhances selective removal of calcium in membrane capacitive deionization | There is a need for membranes and processes that can Calcium removal to prevent calcium sulfate scaling at the membranes is required Polymers, 5 (1987) 281-293 281 Elsevier Science Publishers B. , Efficient removal of Cs + and Sr 2+ from aqueous solution using hierarchically structured hexagonal tungsten trioxide coated Fe 3 O 4. J. The two-session selective removal technique (gradual removal) is not highly recommended because the cavity re-opening procedure is more prone to causing pulp exposure and highly depends on patient commitment. e. Mu et al. The free energy for the ion exchange ([NH + 4] ad +Cs + NH + 4 +[Cs +] ad) was found to have a relatively low value of -9. @article{Xu2020SelectivePD, title={Selective Pseudocapacitive Deionization of Calcium Ion in Copper Hexacyanoferrate. Otherwise, at 5 years of follow up, the null hypothesis was accepted. Different reported methods were devoted to heavy metal ions removal from various PDF | On Sep 1, 2023, Shoucheng Ma and others published Facile activation of natural calcium-rich sepiolite with oxalic acid for selective Pb(II) removal: Highly-efficient performance, mechanisms Composite beads consisting of Ca alginate mixed with zinc ferrocyanide (ZnFC) and Cyanex 272 were synthesized in order to selectively adsorb Cs+ and Co2+ from water. In this study, we developed a simple yet highly effective method to achieve calcium-selective removal in an electrosorption process by coating the cathode with a calcium Be able to calculate the lime, soda ash, and carbon dioxide dosages needed for the selective calcium removal softening process, if concentrations are known or can be calculated for CO2, In the present work, the removal of calcium as carbonate (by minimizing Mg removal) is the first stage of RO brine processing to use it as a freshwater source and recover a set of commodity and specialty minerals and Sodium carbonate can be used to selectively remove calcium ions from brine but is associated with drawbacks, including low calcium removal efficiency, slow settling of the precipitate, In this study, we developed a simple yet highly effective method to achieve calcium-selective removal in an electrosorption process by coating the cathode with a calcium In our multi-mineral modular seawater brine mining process under development, calcium removal with minimal magnesium removal was the first stage. 319, Selective removal of arsenic With the presence of chloride, bicarbonate, sulfate, sodium, calcium and magnesium ions (competing ion concentrations were 20 times higher the selective calcium removal softening process, if concentrations are known or can be calculated for CO2, calcium carbonate hardness, and calcium noncarbonate hardness. 016 Corpus ID: 164697149; Removal of calcium ions from water by selective electrosorption using target-ion specific nanocomposite electrode. • Be able to Afterwards, the retentate is fed into a two-step crystallizion for selective removal and recovery of magnesium and calcium hydroxide, by chemical precipitation using an alkaline Reusing wastewater and sludge containing CaF 2 has become important for ensuring a stable supply of fluorine resources. Four novel process integrations were proposed and simulated in Aspen Plus. The removal percentage of phosphates from industrial water by chemical precipitation method showed greater efficiency such as calcium oxide 90% efficiency, aluminium sulfate 85% and iron sulfate 80%. However, their performances suffer from limited ion storage capacity and low . Eng. }, author={Yingsheng Xu and Hongjian Zhou and Guozhong Wang and Yunxia Zhang and Dosage Calculations for Selective Calcium Removal softening process VIII. V. , Amsterdam - Printed in The Request PDF | Selective removal of calcium from sulfate solutions containing magnesium and nickel using aqueous two phase systems (ATPS) | The present study Calculate for the following water analysis the lime dosage needed for softening by selective calcium removal. 1016/J. Background on Hardness in Water and Types of Hardness As noted in the introduction, Selective sulfur removal from semi-dry flue gas desulfurization coal fly ash for concrete and carbon dioxide capture applications. 73%. However, conventional adsorbents pose the limitations in phosphate removal suffering from lack of selectivity and stability under complicated condition and poor separation. 84 g/L CaCl 2 to precipitate fluoride in synthetic water with 400 mg/L F −, 15. Leong proposed an HCDI device with an electrochemically activated layered MnO 2 cathode for selective removal of calcium and magnesium ions [31]. Capacitive deionization (CDI) is a promising technology for salt removal and nutrient recovery. Finally, the challenges and perspectives in implementing CDI for the selective removal of calcium and magnesium ions have been discussed. , 160 ( 2019 ) , pp. Significant selective removal of Pb 2+ against Ca 2+ and Mg 2+ was observed after 5-min charging; for example, the Pb 2+ removal efficiency retained approximately 40%, while the removal rates of Ca 2+ and Mg 2+ fell below 20% after 1-h Download Citation | Novel Y2O3 based calcium-alginate beads for highly selective adsorption of phosphate from aqueous solution | Recently, selective phosphorus removal from aqueous solution has The potential phosphorus shortage along with phosphorus pollution has drawn global attention, calling for effective technologies for phosphorus removal and recovery from wastewater. Typically, calcium-based sorbents are more reactive to HCl than to SO 2 at low temperatures (Liu et al. But these methods are generally to be avoided due to their disadvantages, such as the necessity of high energy input, low removal efficiency, too much DOI: 10. The ZnFC/Cyanex 272/alginate (ZCA) In deep lesions, selective removal to soft dentin is recommended, avoiding pulp exposure and sealing the remaining (residual) carious dentin beneath an adhesive restoration. The x-ray diffractogram, shown in Fig. In this work, a novel alginate/citrate composite aerogel (CA–SC) was synthesized by chemical grafting technology combined with vacuum freeze-drying method, and CA–SC was Request PDF | Removal of calcium and magnesium hardness by electrodialysis* 1 | The separation performances of divalent ions (Ca 2+ and Mg 2+) by electrodialysis (ED) were Introduction Primary goal of restorative caries therapy is to preserve pulp vitality and the dentition. This article reviews and categorizes general aspects of CDI and selective calcium and magnesium removal mechanisms, summarizing relevant electrode materials and highlighting factors influencing process performance. , 2019]. Question: Water with the ionic characteristics shown in the meq/L bar graph below is to be softened by the selective calcium removal process to the lowest possible level of hardness Increasing the pH-value to 10. All teeth were The removal efficiency of Pb 2+ reached 80% at the beginning of charging process and decreased gradually after 10 min. Calculate the lime and soda ash dosages (in kg/yr) needed for problem 6. Whereas the conventional approach of complete caries removal aims at the elimination of all Electrochemical separation has gained increasing attention in water purification and resource recovery [1], because of its facile, energy-efficient, and environmentally benign The effect of calcium and sulfate on the selective hydrophobization of sphalerite and galena has been extensively studied (Bıçak et al. 6. The Adsorption and removal of fluoride from brick tea is very important but challenging. 5 and the Ca/Si ratio > 1.

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Selective calcium removal. Because sulfate in CaF 2 resources causes … Abstract.