Effects of magnetic field on calcium carbonate precipitation: Ionic and particle mechanisms

Saksono, Nelson; Gozan, Misri; Bismo, Setijo; Krisanti, Elsa Anisa; Widaningrum, Roekmijati; Song, Seunghwan

doi:10.1007/s11814-008-0188-x

Cited by 26 publications

(9 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, the published data concerning the regarding the effect of water magnetic conditioners on water hardness is relatively few, rather confusing due to the often-contradictory results. Some researchers confirmed that the magnetic field affected water quality and reduced water hardness [11][12][13][14][15]. While others reported that the magnetic field has no effect on the hardness of water [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic treatment enhanced the growth of calcite, vaterite and aragonite crystals. Banejad and Abdosalehi [12] measured hardness of water after subjection to a magnetic field (0.05, 0.075 and 0.1 Tesla) with different flow rate (4 and 30 L/h). It was concluded that the magnetic field affected the water quality and that production of magnetic water reduces water hardness until 51 %.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Magnetic Treatment on Temporary Hardness of Groundwater

Alomari

2019

Asian J. Chem.

View full text Add to dashboard Cite

The magnetic treatment devices for water have been in use for scale prevention several decades ago. Although, the effect of magnetic treatment on the chemical and physical properties of water is not fully understood and needs to make a lot of research effort to be clarified. This work aims to investigate the effect of the magnetic treatment on the temporary hardness of the groundwater. A sample of groundwater was passed twice under the influence of perpendicular magnetic strength 0.5 Tesla with a flow rate of 10 L/h. The temporary and permanent hardness as well as scale formation test were measured before and after the magnetic treatment. The scale was analyzed by XRD and SEM techniques. The temporary hardness and the weight of scales were reduced after the magnetic treatment by 39.1 and 22.3 %, respectively. The decrease of temporary hardness after the magnetic treatment of groundwater may be attributed to that the magnetic field reduces both the dissolved CO2 content and surface tension, both of which reduce the amount of temporary hardness. The SEM micrographs illustrate that the magnetic treatment modified the shape and size of crystals of CaCO3 scales to prevent its adhesion to the substrate forming hard scales. The XRD patterns prove that the magnetic treatment of groundwater enhances the crystallization of amorphous CaCO3 favouring the formation of calcite.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Magnetic Treatment on Temporary Hardness of Groundwater

Alomari

2019

Asian J. Chem.

View full text Add to dashboard Cite

show abstract

“…The mechanisms, however, are not fully understood, and controversial results had been reported in the literatures [34][35][36]. Tai et al observed the lower growth rate of calcite in the presence of magnetic field under low pH and supersaturation conditions while the growth rate seemed to increase at high pH condition [34].…”

Section: Discussionmentioning

confidence: 99%

“…Tai et al observed the lower growth rate of calcite in the presence of magnetic field under low pH and supersaturation conditions while the growth rate seemed to increase at high pH condition [34]. Saksono et al conducted the magnetic treatment during the calcium carbonate precipitation process and found the number of calcite crystals increased but with decreased crystal size [35]. Earlier, the study by Evangelos Dalas et al [36] showed that the growth rate of calcite decreased only under a relatively strong magnetic field (> 5 T).…”

Section: Discussionmentioning

confidence: 99%

Occlusion of magnetic nanoparticles within calcium carbonate single crystals under external magnetic field

Zhang

Huang

Tao

et al. 2017

Pure and Applied Chemistry

View full text Add to dashboard Cite

This work studied the growth of calcium carbonate single crystals on top of the monolayer of Fe 3 O 4 @SiO 2 nanoparticles (NPs) with added external magnetic field. It showed that the occlusion process of the NPs into calcium carbonate single crystals varies as the force balance on the NPs shifts. Under no or weak magnetic field, the NPs are relatively mobile, the separation force from the substrate on NPs due to the growing calcium carbonate crystals is larger than the attraction force to the substrate by the magnetic field. The complete occlusion of the NPs into the single crystals is therefore observed. As the magnetic field strength increases, the balance shifts toward the attraction force. The mobility of NPs decreases and partial occlusion of the NPs into the single crystals is gradually observed. The findings in this study offer further insight into the occlusion process experienced by the NPs and also potential approach in engineering the force balance for the design and generation of composite materials that occlude foreign materials into their matrix.

show abstract

“…In many research, CaCO 3 precipitation was obtained by reaction of the Na 2 CO 3 and CaCl 2 solution. Two mechanisms have been developed to address magnetic field effects on calcium carbonate precipitation, viz., (1) a direct effect on dissolved ions and (2) a magnetic effect on particles [2]. They called the first mechanism as "ionic mechanism".…”

Section: Introductionmentioning

confidence: 99%

FORMATION OF CaCO3 PARTICLE AND CONDUCTIVITY OF Na2CO3 AND CaCl2 SOLUTION UNDER MAGNETIC FIELD ON DYNAMIC FLUID SYSTEM

Saksono¹,

Bismo²,

Widaningroem³

et al. 2011

MST

Self Cite

View full text Add to dashboard Cite

Hard water causes the CaCO 3 scale formation on the pipe walls and heat exchanger equipments in industrial or domestic water processes. A great number of experimental researches on the prevention of the CaCO 3 precipitation process by magnetic field have been carried out. In this research, Na 2 CO 3 and CaCl 2 solutions was magnetized in the circulated flow condition (dynamic fluid system). The velocity of fluid and the circulation time was modified to examine its influences to the magnetization process. CaCO 3 content was measured by titration method of EDTA complexometry. Conductivity test was conducted to find out hydrate ion bonding. The results showed that magnetization increased the CaCO 3 formation and the optimum process reaches for 10 minutes circulation on 0.554 m/s of flow rate. Magnetic field decreases the conductivities of Na 2 CO 3 and CaCl 2 solution, hence reduced the ion hydrate bonding. These results showed that magnetization on Na 2 CO 3 and CaCl 2 ionic solution was effective in controlling the CaCO 3 formation by increasing CaCO 3 precipitation.

show abstract

Effects of magnetic field on calcium carbonate precipitation: Ionic and particle mechanisms

Cited by 26 publications

References 21 publications

Effect of Magnetic Treatment on Temporary Hardness of Groundwater

Effect of Magnetic Treatment on Temporary Hardness of Groundwater

Occlusion of magnetic nanoparticles within calcium carbonate single crystals under external magnetic field

FORMATION OF CaCO3 PARTICLE AND CONDUCTIVITY OF Na2CO3 AND CaCl2 SOLUTION UNDER MAGNETIC FIELD ON DYNAMIC FLUID SYSTEM

Contact Info

Product

Resources

About