Some Aspects of Magnetic Filtration Theory for Removal of Fine Particles from Aqueous Suspensions

Sarıkaya, Musa; Abbasov, Teymuraz; Erdemoğlu, Murat

doi:10.1080/01932690500266829

Cited by 14 publications

(7 citation statements)

References 17 publications

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“…High-gradient magnetic separation (HGMS) is a commonly used term in magnetic separations [33][34][35][36][37][38][39][40][41][42][43][44][45]. An HGMS device comprises of a bed of magnetically susceptible wires placed inside an electromagnet, as shown in Fig.…”

Section: Magnetic Separation For Water Purificationmentioning

confidence: 99%

Water purification using magnetic assistance: A review

Ambashta

Sillanpää

2010

Journal of Hazardous Materials

881

331

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Section: Magnetic Separation For Water Purificationmentioning

confidence: 99%

Water purification using magnetic assistance: A review

Ambashta

Sillanpää

2010

Journal of Hazardous Materials

881

331

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“…Sarikaya et al have presented an excellent review of the design parameters (e.g., flow rate and strength of the applied field) for this type of particle separation in aqueous media. 25 An alternative to this technique is magnetic field-flow fractionation (MFFF). This method separates particles into various fractions due to the particles' individual magnetic moment.…”

Section: Introductionmentioning

confidence: 99%

Size Analysis of PDMS−Magnetite Nanoparticle Complexes: Experiment and Theory

et al. 2008

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Biocompatible, hydrophobic nanoparticles show great promise as biomaterials. This paper reports the synthesis, magnetic separation, and characterization of magnetite nanoparticles with polydimethylsiloxane (PDMS) adsorbed onto their surfaces. The particle size distributions were narrowed by employing a magnetic separation/fractionation technique to remove larger particles and aggregates from an original distribution. A probability averaging method that incorporates particle size distributions of the magnetite cores derived from TEM is proposed, together with implementation of a polymer brush model for calculating the thickness of the polymer surfactant, for predicting the sizes and size distributions of these complexes in suspension. The intensity, volume, and number average size distributions in solution were predicted, and the values were compared to sizes of the complexes measured by DLS. This approach provides a tool for a more precise characterization of the size distributions of polymer−nanoparticle complexes relative to previous methods that utilized only a mean (single) core particle size. The predicted sizes of the complexes in dispersion closely approximate measured values from DLS for particles with narrow size distributions. Agreement between the predicted and measured sizes improves as the particle size distribution becomes narrower.

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“…The effects of the operating parameters of magnetic filtration on the filter performance have been studied by many researchers. [17] Nevertheless, most researchers have focused on hard magnetic particles, such as magnetite or haematite, that were separated from water. The magnetic separation dates of soft flocs, which could be reformed or broken during HGMS, were rarely reported.…”

Section: Superconducting Magnetic Separationmentioning

confidence: 99%

Feasibility of turbidity removal by high-gradient superconducting magnetic separation

Zeng

Li²,

et al. 2015

Environmental Technology

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Several studies have focused on pollutant removal by magnetic seeding and high-gradient superconducting magnetic separation (HGSMS). However, few works reported the application of HGSMS for treating non-magnetic pollutants by an industrial large-scale system. The feasibility of turbidity removal by a 600 mm bore superconducting magnetic separation system was evaluated in this study. The processing parameters were evaluated by using a 102 mm bore superconducting magnetic separation system that was equipped with the same magnetic separation chamber that was used in the 600 mm bore system. The double-canister system was used to process water pollutants. Analytical grade magnetite was used as a magnetic seed and the turbidity of the simulated raw water was approximately 110 NTU, and the effects of polyaluminum chloride (PAC) and magnetic seeds on turbidity removal were evaluated. The use of more PAC and magnetic seeds had few advantages for the HGSMS at doses greater than 8 and 50 mg/l, respectively. A magnetic intensity of 5.0 T was beneficial for HGSMS, and increasing the flow rate through the steel wool matrix decreased the turbidity removal efficiency. In the breakthrough experiments, 90% of the turbidity was removed when 100 column volumes were not reached. The processing capacity of the 600 mm bore industry-scale superconducting magnetic separator for turbidity treatment was approximately 78.0 m(3)/h or 65.5 × 10(4) m(3)/a. The processing cost per ton of water for the 600 mm bore system was 0.1 $/t. Thus, the HGSMS separator could be used in the following special circumstances: (1) when adequate space is not available for traditional water treatment equipment, especially the sedimentation tank, and (2) when decentralized sewage treatment HGSMS systems are easier to transport and install.

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Some Aspects of Magnetic Filtration Theory for Removal of Fine Particles from Aqueous Suspensions

Cited by 14 publications

References 17 publications

Water purification using magnetic assistance: A review

Water purification using magnetic assistance: A review

Size Analysis of PDMS−Magnetite Nanoparticle Complexes: Experiment and Theory

Feasibility of turbidity removal by high-gradient superconducting magnetic separation

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