What is used to remove calcium ions from hard water?
Answers from top 8 papers
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| Papers (8) | Insight |
|---|---|
| Calcium hydride is most effective for the removal of water. | |
136 Citations | The most effective application of this process to remove the heavy metal ions from wastewaters takes place when concentration of the surfactants (both ionic and nonionic ones) is equal to the critical concentration of micelle formation and/or it is lower than that. |
48 Citations | This precipitate has a pumping effect on the calcium ions, destabilizing the gel |
| SmearClear was the most effective agent for the removal of calcium ions from the root canal. | |
| It is suitable for removal of calcium and magnesium ions to supply soft water. | |
126 Citations | Ion exchange is the most appropriate technology to remove boron selectively from desalinated seawater. |
18 Citations | These results indicate that the cross linked calcium alginate beads have potential for removing cobalt ions from industrial waste water. |
22 Citations | The obtained products showed an excellent ability to remove heavy metal ions in water treatment. |
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How to remove hard water?5 answersHard water can be removed using various methods. One method involves using a remove hard device that includes reaction units, sedimentation tanks, pressure filters, and medicine systems. Another method involves reducing the hardness of mine water by adding coagulants, alga microorganisms, and flocculants, and then filtering the water. Additionally, a hard water purifying device can be used, which includes cation and anion permselective separating plates, water pumps, and direct current power sources. In the special automobile field, a water drainage car equipped with hydraulic control devices and hydraulic pressure immersible pumps can be used to remove water. These methods provide effective ways to remove hard water and improve water quality.
How to reduce hard water?5 answersHard water can be reduced through various methods. One approach is the use of a reduce membrane reactor, which involves the addition of lime, sodium sulphate, and sodium carbonate to the water, followed by nanofiltration membrane separation to produce softened water. Another method is the use of ion exchange and reverse osmosis water softeners, which remove scale buildup in pipes by exchanging ions or filtering water through a membrane. Additionally, a hard water-softening method utilizes a cation exchange resin bed and a regeneration process to regenerate the resin and prevent hardness leakage. An electromagnetic hard water softening device can also be employed, which uses an electromagnetic field to condense small calcium carbonate crystals into larger ones, reducing deposition and scaling. Finally, treating water with two different metal surfaces, electrically insulated from each other, can help reduce scaling by allowing current flow through the water.
How do we remove F from a compound by using CaCO3?5 answersTo remove F from a compound using CaCO3, several methods have been investigated. One approach is to use Ca–Al–CO3 layered double hydroxides (LDHs) as an adsorbent. Another method involves adding a water-soluble Ca compound, such as slaked lime or calcium chloride, and then a water-soluble Al-salt to the compound. The pH of the compound is adjusted above 10.5 to ensure perfect dissociation of Al from F, and then the pH is neutralized with a mineral acid. This results in the formation of aluminum hydroxide, which adsorbs calcium fluoride and precipitates. Additionally, fluoride can be removed by adding a Ca salt to produce a finely-divided precipitate of CaF2, and then adding an Al salt to adsorb the precipitate onto Al(OH)3 flocs. These flocs can be removed from the solution by flotation or filtration.
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