Filtration characteristics of threaded microfiber water filters

Shemer, Hilla; Sagiv, Abraham; Holenberg, Marina; Maor, Adva Zach

doi:10.1016/j.desal.2017.07.009

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…These results revealed that the micronized calcite dissolution process would require a removal of the residual turbidity. This can be achieved by threaded microfiber filtration or ultrafiltration…”

Section: Results and Discussionmentioning

confidence: 99%

Modeling Remineralization of Desalinated Water by Micronized Calcite Dissolution

Hasson

Fine

Sagiv

et al. 2017

Environ. Sci. Technol.

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A widely used process for remineralization of desalinated water consists of dissolution of calcite particles by flow of acidified desalinated water through a bed packed with millimeter-size calcite particles. An alternative process consists of calcite dissolution by slurry flow of micron-size calcite particles with acidified desalinated water. The objective of this investigation is to provide theoretical models enabling design of remineralization by calcite slurry dissolution with carbonic and sulfuric acids. Extensive experimental results are presented displaying the effects of acid concentration, slurry feed concentration, and dissolution contact time. The experimental data are shown to be in agreement within less than 10% with theoretical predictions based on the simplifying assumption that the slurry consists of uniform particles represented by the surface mean diameter of the powder. Agreement between theory and experiment is improved by 1-8% by taking into account the powder size distribution. Apart from the practical value of this work in providing a hitherto lacking design tool for a novel technology. The paper has the merit of being among the very few publications providing experimental confirmation to the theory describing reaction kinetics in a segregated flow system.

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Section: Results and Discussionmentioning

confidence: 99%

Modeling Remineralization of Desalinated Water by Micronized Calcite Dissolution

Hasson

Fine

Sagiv

et al. 2017

Environ. Sci. Technol.

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“…A filter fabric with smaller pore sizes generally has lower air permeability due to reduced porosity. During filtration operation such fabric will be quickly clogged by the dust particles and thereby experiences shorter filtration cycles which will increase the energy cost of operating the baghouse due to frequent cleaning cycles [8]. Filter fabrics that can maintain high air permeability during filtration are inexpensive to maintain and tend to have longer lifetime as they are subjected to fewer cleaning cycles in a given period of time thereby minimizing the external forces that the fabrics are subjected to during cleaning phase [9].…”

Section: Introductionmentioning

confidence: 99%

Optimization of air permeability of spunlaced filter fabrics using the Box–Behnken experimental design

Maduna

Patnaik

Mvubu³

et al. 2019

Journal of Industrial Textiles

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One of the most important characteristics that a filter must possess is high air permeability. A good filter fabric must be able to capture the dust particles while maintaining a good airflow through it in order to reduce high pressure drop. Therefore, producing a filter fabric with the desired air permeability can be challenging as several process parameters such as fiber types, area weight and water jet pressure will interact with each other during spunlacing process and influence the fabric air permeability. To study the effects of these independent variables on the air permeability of three different types of spunlaced fabrics, the Box–Behnken design was used to model their effects. The fibers used were polyacrylonitrile, polyphenylene sulfide and blend of polyphenylene sulfide/polyimide. In addition, filtration properties of some of the filter samples were also evaluated. Based on the effects of the fiber types, area weight and water jet pressure on the fabric air permeability, the optimum conditions for achieving higher air permeability were fiber types (+1 level), area weight (0 level) and pressure (−1 level), respectively. The air permeability of the fabrics decreased with increasing water jet pressure for all fiber types and increasing area weight decreased the air permeability. It was observed that the independent variables had a significant effect on the air permeability. Filtration efficiency of the selected filters samples were ≥95%. Among the selected samples, polyphenylene sulfide/polyimide (440 g/m2) fabric has the lowest pressure drop whereas polyacrylonitrile (560 g/m2) has the highest pressure drop.

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A silsesquioxane-based flexible polyimide aerogel with high hydrophobicity and good adsorption for liquid pollutants in wastewater

Qiu

Sun

et al. 2020

J Mater Sci

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Filtration characteristics of threaded microfiber water filters

Cited by 7 publications

References 13 publications

Modeling Remineralization of Desalinated Water by Micronized Calcite Dissolution

Modeling Remineralization of Desalinated Water by Micronized Calcite Dissolution

Optimization of air permeability of spunlaced filter fabrics using the Box–Behnken experimental design

A silsesquioxane-based flexible polyimide aerogel with high hydrophobicity and good adsorption for liquid pollutants in wastewater

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