Characterization of Mullite Ceramic Membranes and their Application in the Removal Escherichia Coli

Biron, Dionisio da Silva; Bortoluz, Jordana; Zeni, Mára; Bergmann, Carlos Pérez; Santos, Venina dos

doi:10.1590/1980-5373-mr-2015-0301

Cited by 13 publications

(8 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ceramic membranes were used in waste water technology and succesfull and possible applications cover all industries where media fillered, likely: chemical industry, metal industry (surface engineering), textiles (pupl and paper industry), food and beverages, recycling and environment [1]. Membrane application as the filtering of bacteria [2] and water treatment [3].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Porous Ceramic Membranes for Micro-Filtration from Clay/CuZn Using Extrusion Methods

Amin

Subri

2018

MATEC Web Conf.

View full text Add to dashboard Cite

In this study, fabrication and characterization of ceramic membranes preparation was carried out. Porous ceramic membranes were fabricated by extrusion process from different percentage composition of CuZn on (80 wt% Clay, 10 wt% TiO2, 5 wt% Carbon and 5 wt% PVA). The fabricated membranes were sintered at 900°C for 1 hour in an electrical box furnace with heating rate 1oC/min and holding time for 1 hour. Apparent density and porosity were determined by standar methods for ceramic materials. Phase composition of the ceramic support was established by X-Ray Diffraction analysis. SEM studies of the membranes added at different CuZn were carried out.

show abstract

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Porous Ceramic Membranes for Micro-Filtration from Clay/CuZn Using Extrusion Methods

Amin

Subri

2018

MATEC Web Conf.

View full text Add to dashboard Cite

show abstract

“…The membranes prepared with less than 10% of limestone exhibited total rejection of both E. coli and S. aureus , which results from the membrane structure but also from the low driving force used in the experiments (gravity filtration). Indeed, Biron et al observed a decreasing E. coli rejection from 98% down to 66% when increasing the transmembrane pressure applied through mullite ceramic membranes from 50 to 200 kPa [ 68 ].…”

Section: Resultsmentioning

confidence: 99%

New Low-Cost Ceramic Microfiltration Membranes for Bacteria Removal

et al. 2022

View full text Add to dashboard Cite

Safe water provision in low-income countries is constrained by limited financial resources, and the problem is worsened during natural disasters. Thus, there is a need to develop efficient low-cost technologies for point-of-use water treatment. This work reports on the development of new ceramic microfiltration membranes made from mixtures of inexpensive raw materials available locally (kaolin, bentonite and limestone) and their efficiency in rejecting bacteria such as Escherichia coli and Staphylococcus aureus. Thermogravimetric analysis, differential scanning calorimetry, Fourier-transform infrared spectroscopy, X-ray diffraction, mercury intrusion porosimetry, flexural strength and water uptake were used to characterize the raw materials and membranes. The addition of limestone in the membrane fabrication increased the pore size, the porosity and, thus, the permeability of the membranes but at the expense of the rejection performance. Among the different compositions studied, the membrane made of 83% kaolin, 10% bentonite and 7% limestone showed the best performance compromise with water permeability of 566 L·h−1·m−2·bar−1 and 100% rejection of both Escherichia coli and Staphylococcus aureus. These new low-cost microfiltration membranes are expected to have potential applications in water treatment and household applications.

show abstract

“…Since average pore diameter is 0.46 µm these filters are macroporous [19] and designed for the studied ceramic filters. The dV/d function is widely used for determination of diameter, which occurs in the penetration of the maximal mercury [18] . This figure shows that there is a predominant presence of pores with diameters of 0.02 to 21.2 µm, illustrated by the…”

Section: Pore Diameter Distributionmentioning

confidence: 99%

Identification of an Appropriate Formulation for Domestic Water Ceramic Filters from Soukamna Clay (Cameroon)

Nguiamba

Yanu

Belibi

et al. 2021

j. of met. mater. res.

View full text Add to dashboard Cite

This paper deals with the formulation of ceramic filters having the porosity adapted to domestic potable water treatment. The filters were made from clays and rice husk obtained from the Far North region of Cameroon (Logone Valley). Nine formulations were investigated to choose those that might have the porosity standing between 35 and 50% (the ideal porosity adapted for water treatment) [1]. The nine formulations investigated were as follow: clay:rice husk mixture weight ratio 0.7:0.3; 0.8:0.2 and 0.9:0.1 with the particle size of 100:100 microns. The sintering temperatures of 900°C, 950°C and 1000°C were applied for each of the mixtures. The results showed that only filters with weight ratio 0.7:0.3 sintered at 900°C, 950°C and 1000°C had porosity between 35 and 50% with values of 39.41±0.96; 40.15±1.59; 40.14±1.31 respectively. Mechanical strength, permeability and iron leaching behavior were investigated for these three formulations. The formulation 0.7:0.3 with sintering temperature of 1000°C had the higher permeability and was the more stable for iron leaching so it is the more adapted for water treatment in terms of flow rate and iron leaching behavior, pore size distribution showed that these filters were macroporous and designed for microfiltration with average pore diameter of 0.46µm.

show abstract

Characterization of Mullite Ceramic Membranes and their Application in the Removal Escherichia Coli

Cited by 13 publications

References 22 publications

Preparation and Characterization of Porous Ceramic Membranes for Micro-Filtration from Clay/CuZn Using Extrusion Methods

Preparation and Characterization of Porous Ceramic Membranes for Micro-Filtration from Clay/CuZn Using Extrusion Methods

New Low-Cost Ceramic Microfiltration Membranes for Bacteria Removal

Identification of an Appropriate Formulation for Domestic Water Ceramic Filters from Soukamna Clay (Cameroon)

Contact Info

Product

Resources

About