Design of ceramic filters using Clay/Sawdust composites: Effect of pore network on the hydraulic permeability

Youmoue, Martine; Fongang, Rufin Theophile Tene; Sofack, J. C.; Kamseu, Elie; Melo, Uphie Chinje; Tonlé, Ignas Kenfack; Leonelli, Cristina; Rossignol, Sylvie

doi:10.1016/j.ceramint.2016.12.101

Cited by 20 publications

(11 citation statements)

References 19 publications

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“…10A) revealed that the water flow rate could be about 4 mL min −1 . The cumulated flowing volume increases with time confirming the effectiveness of the permeability of the sample [78,79].…”

Section: Application To the Filtration Of Methylene Blue Dyesupporting

confidence: 54%

Effect of silica and lignocellulosic additives on the formation and the distribution of meso and macropores in foam metakaolin-based geopolymer filters for dyes and wastewater filtration

et al. 2020

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This work investigates how silica and lignocellulose additives affect the production of metakaolin based-geopolymer foam filters. Lignocellulosic material from wood powder sawdust (S), silica from rice husk ash (RHA), calcined (Sa) and uncalcined (Sab) sand were separately used together with high amorphous silica fume (foaming agent) and integrated into the matrix (metakaolin and solution). The different geopolymer pastes were cured at 70 °C to enhance the pore formation. Results presented the geopolymer foams filter as sponge-like composites having 58-68% of porosity with 1-4 MPa of compressive strength. RHA and Sa lead to materials with more meso and macropores. Sawdust based-geopolymer (the hardest foam) containing channel pores predominated by coarse pores exhibited a flow rate of 4 mL min −1 . The absence of the bands of MB from FT-IR spectra and UV spectra (663 nm) of MB filtrate (totally blue discoloured) indicated that, geopolymers foams filters designed are suitable for dyes and wastewater filtration.

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Section: Application To the Filtration Of Methylene Blue Dyesupporting

confidence: 54%

Effect of silica and lignocellulosic additives on the formation and the distribution of meso and macropores in foam metakaolin-based geopolymer filters for dyes and wastewater filtration

et al. 2020

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“…Although clay does not create pore structure directly, Oyanedel-Craver and Smith 2008found that filters made from different clay sources showed varied porosity, hydraulic conductivity and bacterial removal efficiency. A recent study suggested that high content of sand-rich clay may contribute to the decrease of mean pore size of CWF and thus potentially influence filter flow rate and bacterial removal efficacy (Youmoue et al, 2017). Additionally, the inclusion of diatomaceous earth and MgO components in the CWFs were found to be beneficial for viral removal (Michen et al, 2012;Michen et al, 2013), suggesting that clay composition may also have some influence on filter performance.…”

Section: Critical Factors For Cwf Performancementioning

confidence: 99%

“…Pore size of CWFs is considered a critical parameter that can affect both flow rate and microbial removal efficiency (Soppe et al, 2015;Youmoue et al, 2017). CWFs were prepared using three combustible materials that include irregularly shaped rice husk, spherical/oval shaped starch and tubular shaped recycled paper fiber in our recent study (Yang et al, 2020).…”

Section: Flow Rate Versus Microbial Removal Efficiencymentioning

confidence: 99%

Ceramic water filter for point-of-use water treatment in developing countries: Principles, challenges and opportunities

Yang

Chitwood

et al. 2020

Front. Environ. Sci. Eng.

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Drinking water source contamination poses a great threat to human health in developing countries. Point-of-use (POU) water treatment techniques, which improve drinking water quality at the household level, offer an affordable and convenient way to obtain safe drinking water and thus can reduce the outbreaks of waterborne diseases. Ceramic water filters (CWFs), fabricated from locally sourced materials and manufactured by local labor, are one of the most socially acceptable POU water treatment technologies because of their effectiveness, low-cost and ease of use. This review concisely summarizes the critical factors that influence the performance of CWFs, including (1) CWF manufacturing process (raw material selection, firing process, silver impregnation), and (2) source water quality. Then, an in-depth discussion is presented with emphasis on key research efforts to address two major challenges of conventional CWFs, including (1) simultaneous increase of filter flow rate and bacterial removal efficiency, and (2) removal of various concerning pollutants, such as viruses and metal(loid)s. To promote the application of CWFs, future research directions can focus on: (1) investigation of pore size distribution and pore structure to achieve higher flow rates and effective pathogen removal by elucidating pathogen transport in porous ceramic and adjusting manufacture parameters; and (2) exploration of new surface modification approaches with enhanced interaction between a variety of contaminants and ceramic surfaces.

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“…Such filtration procedures have shown several flaws that were mandatory to be avoided for this purpose. Most studies have been done on permeable ceramic membranes where the permeability has been achieved by mixing a certain ratio of clay and starch (Youmoue et al, 2017). The disadvantage in such membranes made by mixing the regular materials is that the pore size cannot be controlled as desired and would rather have a fixed range of pore formation with other relevant variables given (Yakub et al, 2012).…”

Section: Unique Membrane Designedmentioning

confidence: 99%

“…One of the main issues in the existing ceramic permeable membranes is the variation of the pore sizes, the inconsistency throughout the surface (Youmoue et al, 2017). The challenge was to identify a pore-forming agent where its chemical reactivity and the reacting characteristics can be controlled as desired as the poreforming agents were found to be the cause of this inconsistency observed.…”

Section: Requirements In Specified Membranementioning

confidence: 99%

Growth Factors & Stem Cells Entrapment in Bio Compatible & Biodegradable Nano Particles to Prevent Early Degradation & Facilitate Gradual Release

Anuruddha¹,

Fernando²,

Saida³

et al. 2021

Preprint

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The use of growth factors and stem cells as the core treating agents is one step into creating a biocompatible Solid Lipid Nano Particles (SLNP) for treatments. Apart from obtaining these growth factors and stem cells from the patients, using the bi-product of the extraction process which is the lipid of the patient for the production of the SLNP assures the final product to be biocompatible and of a unique structure. The use of autologous cells and proteins from the patients makes the entire process medically ethical and more viable for treatment procedures. This article, thus discusses on the experimental process of developing such SLNP and the introduction of the relevant medical contraption designed uniquely for the procedure inclusive of a specified membrane.

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Design of ceramic filters using Clay/Sawdust composites: Effect of pore network on the hydraulic permeability

Cited by 20 publications

References 19 publications

Effect of silica and lignocellulosic additives on the formation and the distribution of meso and macropores in foam metakaolin-based geopolymer filters for dyes and wastewater filtration

Effect of silica and lignocellulosic additives on the formation and the distribution of meso and macropores in foam metakaolin-based geopolymer filters for dyes and wastewater filtration

Ceramic water filter for point-of-use water treatment in developing countries: Principles, challenges and opportunities

Growth Factors & Stem Cells Entrapment in Bio Compatible & Biodegradable Nano Particles to Prevent Early Degradation & Facilitate Gradual Release

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Design of ceramic filters using Clay/Sawdust composites: Effect of pore network on the hydraulic permeability

Cited by 20 publications

References 19 publications

Effect of silica and lignocellulosic additives on the formation and the distribution of meso and macropores in foam metakaolin-based geopolymer filters for dyes and wastewater filtration

Effect of silica and lignocellulosic additives on the formation and the distribution of meso and macropores in foam metakaolin-based geopolymer filters for dyes and wastewater filtration

Ceramic water filter for point-of-use water treatment in developing countries: Principles, challenges and opportunities

Growth Factors &amp; Stem Cells Entrapment in Bio Compatible &amp; Biodegradable Nano Particles to Prevent Early Degradation &amp; Facilitate Gradual Release

Contact Info

Product

Resources

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Growth Factors & Stem Cells Entrapment in Bio Compatible & Biodegradable Nano Particles to Prevent Early Degradation & Facilitate Gradual Release