Application of a simple ceramic filter to membrane bioreactor

Hasan, Mahmudul; Shafiquzzaman, Md.; Azam, Md. Shafiul; Nakajima, Jun

doi:10.1016/j.desal.2011.03.062

Cited by 27 publications

(24 citation statements)

References 77 publications

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“…Numerous materials have been used as pore generators, starting by chemically pure substances (urea 6 ), going through processed substances (corn starch 11 ), and ending in natural products (poppy seeds 2 , rice bran 10 ), or even in wastes (sawdust 8 , fly ash 9,12 ). Starches are broadly employed as materials for generating porosity in ceramics as they produce pores during burning out around 500ºC [13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

“…The addition of a temperature sensitive component in order to create porosity in the support is applied in the manufacture of membranes based on advanced ceramics (alumina, titania, zirconia), and also of membranes based on traditional compositions 8 or local raw materials (clays 9,10 , perlite 11 ). Numerous materials have been used as pore generators, starting by chemically pure substances (urea 6 ), going through processed substances (corn starch 11 ), and ending in natural products (poppy seeds 2 , rice bran 10 ), or even in wastes (sawdust 8 , fly ash 9,12 ).…”

Section: Introductionmentioning

confidence: 99%

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Role of starch characteristics in the properties of low-cost ceramic membranes

Lorente-Ayza

Orts

Pérez-Herranz

et al. 2015

Journal of the European Ceramic Society

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Starch is used as porosity generator in membranes and other porous ceramics. There are different providers that offer a wide variety of starches, which produce distinct pore size distributions. A study was conducted to evaluate the effects of the characteristics of starches (impurities, particle size), obtained from potato, pea, maize and wheat, on the properties of microfiltration membranes formulated with traditional raw materials (the ceramic matrix was composed of quartz, albite and mullite). The results indicated that the pore size distribution and the permeability coefficient of the membrane can be controlled modifying only the particle size of starch. In this way, correlations were obtained between surface mean diameter of starch and membrane properties (characteristic pore diameters d 16 and d 50 , and permeability coefficient). Moreover, it is necessary to use a starch having a mean particle size greater than about 50 microns in order to obtain a significant change in the pore size distribution and an increase in the permeability of the membrane.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Role of starch characteristics in the properties of low-cost ceramic membranes

Lorente-Ayza

Orts

Pérez-Herranz

et al. 2015

Journal of the European Ceramic Society

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“…The pore size of the filter was measured to be 1-5µ m. The pore size of the filter was estimated by comparing the particle size distribution of turbid water (water with clay mixture) before and after the filtration with the ceramic filter. Manufacturing cost was estimated to be $0.2-0.3 US with an active filter area of 0.039 m 2 per filter [22]. …”

Section: Low Cost Ceramic Filtermentioning

confidence: 99%

“…Water 2018, 10, x FOR PEER REVIEW 3 of 15 study was adapted from our previous study [22]. The clay soil sample was dried, ground with a hammer, and sieved through a 0.5-mm sieve.…”

Section: Low Cost Ceramic Filtermentioning

confidence: 99%

“…In our previous study, a low-cost and simple ceramic filter made with locally available cheap materials (clay soil and rice bran) was developed for the treatment of groundwater [21]. Eventually, the ceramic filter was applied to a membrane bioreactor (MBR) process for high-strength wastewater and greywater treatment [22,23]. This ceramic filter, with a pore size of 1-5 µm, was foundto be successful in separating activated sludge flocculants as a commercial polymeric membrane in wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

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Application of a Low Cost Ceramic Filter for Recycling Sand Filter Backwash Water

Shafiquzzaman

Al-Mahmud

AlSaleem

et al. 2018

Water

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Abstract:The aim of this study is to examine the application of a low cost ceramic filter for the treatment of sand filter backwash water (SFBW). The treatment process is comprised of pre-coagulation of SFBW with aluminum sulfate (Alum) followed by continuous filtration usinga low cost ceramic filter at different trans-membrane pressures (TMPs). Jar test results showed that 20 mg/L of alum is the optimum dose for maximum removal of turbidity, Fe, and Mn from SFBW. The filter can be operated at a TMP between 0.6 and 3 kPa as well as a corresponding flux of 480-2000 L/m 2 /d without any flux declination. Significant removal, up to 99%, was observed forturbidity, iron (Fe), and manganese (Mn). The flux started to decline at 4.5 kPa TMP (corresponding flux 3280 L/m 2 /d), thus indicated fouling of the filter. The complete pore blocking model was found as the most appropriate model to explain the insight mechanism of flux decline. The optimum operating pressure and the permeate flux were found to be 3 kPa and 2000 L/m 2 /d, respectively. Treated SFBW by a low cost ceramic filter was found to be suitable to recycle back to the water treatment plant. The ceramic filtration process would be a low cost and efficient option to recycle the SFBW.

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Application of a Low Cost Ceramic Filter to a Membrane Bioreactor for Greywater Treatment

Hasan,

Shafiquzzaman,

Nakajima

et al. 2015

Water Environment Research

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The performance of a low cost and simple ceramic filter to a membrane bioreactor (MBR) process was evaluated for greywater treatment. The ceramic filter was submerged in an acrylic cylindrical column bioreactor. Synthetic greywater (prepared by shampoo, dish cleaner and laundry detergent) was fed continuously into the reactor. The filter effluent was obtained by gravitational pressure. The average flux performance was observed to be 11.5 LMH with an average hydraulic retention time of 1.7 days. Complete biodegradation of surfactant (methylene blue active substance removal: 99–100%) as well as high organic removal performance (biochemical oxygen demand: 97–100% and total organic carbon: >88%) was obtained. The consistency of flux (11.5 LMH) indicated that the filter can be operated for a long time without fouling. The application of this simple ceramic filter would make MBR technology cost‐effective in developing countries for greywater reclamation and reuse.

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Application of a simple ceramic filter to membrane bioreactor

Cited by 27 publications

References 77 publications

Role of starch characteristics in the properties of low-cost ceramic membranes

Role of starch characteristics in the properties of low-cost ceramic membranes

Application of a Low Cost Ceramic Filter for Recycling Sand Filter Backwash Water

Application of a Low Cost Ceramic Filter to a Membrane Bioreactor for Greywater Treatment

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