Development of a Simple, Effective Ceramic Filter for Arsenic Removal

Shafiquzzaman, Md.; Hasan, Mahmudul; Nakajima, Jun; Mishima, Iori

doi:10.2965/jwet.2011.333

Cited by 18 publications

(11 citation statements)

References 32 publications

(41 reference statements)

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“…The cylindrical shaped clay ceramic filter used in this study was manufactured using locally available clay soil and rice bran (see bottom right of Figure 1). The manufacturing process was adapted from our previous study [35]. Briefly, clay soil and rice bran were mixed at a ratio of 80:20 by weight.…”

Section: Clay Ceramic Filtermentioning

confidence: 99%

“…The filter was sun-dried for 48-72 h, followed by firing in a muffle furnace in a small-scale pottery kiln at 900 • C for 4-5 h. The hollow clay ceramic filter is open on one side, 10 cm high, and holds a thickness of 2 cm (Figure 1). The filter has a pore size of 1-5 µm, with an active surface area of 0.039 m 2 /filter [35].…”

Section: Clay Ceramic Filtermentioning

confidence: 99%

“…The feed rate was selected based on 1−10% of the total freshwater production of the WTP. The cost of the clay ceramic filter ($30/m 2 ) was taken from a previous study [35]. The lifespan of the clay ceramic filter was assumed to be 1 year.…”

Section: Econmomic Analysis Of the Ceramic Filtration Processmentioning

confidence: 99%

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Experimental Study for Sand Filter Backwash Water Management: Low-Cost Treatment for Recycling and Residual Sludge Utilization for Radium Removal

Shafiquzzaman

AlSaleem

Haider

et al. 2021

Water

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Management of backwash water (BW) generated from sand filtration of groundwater naturally contaminated with iron (Fe), manganese (Mn), and radium (Ra) remains a challenge worldwide. The present study investigated the effectiveness of a low-cost clay ceramic filter for BW recycling along with residual sludge utilization for Ra removal from BW. A 15 day continuous ceramic filtration process operated at a constant flux of 2000 L/m2/d (83 LMH) showed 99% removal of Fe, Mn, and turbidity. The treated BW was found suitable for recycling back to the sand filters. Subsequently, the residual sand filter backwash sludge (BS) was collected, characterized by scanning electron microscopy (SEM) and X-ray diffraction, and examined as a potential adsorbent to the Ra. Results showed that the sludge constituted heterogeneous basic elements, with higher percentages of iron and manganese oxides. The sludge can be classified as typical mesoporous and poorly crystalline minerals consisting primarily of quartz and Mn2O3. Over 60% of Ra from the initial 2.1 bq/L could be removed by sludge in 30 min at neutral pH. The adsorption kinetics of sludge described well by the pseudo-second order model and Ra adsorption on the sludge were mainly controlled by chemisorption rate-controlling steps, intraparticle diffusion, and external mass transfer processes. Treatment of BW by low-cost clay ceramic filters and the utilization the BS for Ra removal would be a sustainable sand filter BW management practice.

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Section: Clay Ceramic Filtermentioning

confidence: 99%

Section: Clay Ceramic Filtermentioning

confidence: 99%

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Experimental Study for Sand Filter Backwash Water Management: Low-Cost Treatment for Recycling and Residual Sludge Utilization for Radium Removal

Shafiquzzaman

AlSaleem

Haider

et al. 2021

Water

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“…The low-cost micropores ceramic filter used in this study was manufactured using locally available clay soil and rice bran. Details manufacturing process of the filter is described in the authors' previous study [39]. The final filter was cylindrical in shape (see Table 1 and Figure 1a), having pore size of 1-5 µm and the manufacturing cost was 0.2-0.3 US$/filter [39].…”

Section: Ceramic Filtermentioning

confidence: 99%

Evaluation of a Low-Cost Ceramic Filter for Sustainable Reuse of Urban Stormwater in Arid Environments

Shafiquzzaman

Haider

Ghazaw

et al. 2020

Water

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Sustainable reuse of urban stormwater is inevitable in the fight against water crises in arid regions. This research aimed to evaluate the effectiveness of a low-cost ceramic filtration process for reuse applications of urban stormwater. Stormwater was collected from a storage pond located in Buraydah (Qassim, Saudi Arabia) for laboratory experiments. The filtration tests were performed in a continuous mode with constant pressure using a low-cost ceramic filter made of clay soil and rice bran. The removal rates of the contaminants (heavy metals) as well as the turbidity, suspended solids, and nutrients of the stormwater were assessed. High removal efficiencies for turbidity (97.4%), suspended solids (97.0%), BOD 5 (78.4%), and COD (76.1%) were achieved while low removals were achieved for the nutrients: 19.7% for total nitrogen, 25.3% for nitrate, and 8.6% for phosphate. Removal efficiencies ranged between 36.2% and 99.9% for the heavy metals, i.e., iron, manganese, lead, zinc, nickel, copper, cadmium, selenium, and barium. Contaminant removal rates observed for the ceramic filter were also compared with the alum coagulation process operated in a continuous mode at an optimum alum dose of 50 mg/L. Similar removal behaviors for removal of turbidity, suspended solids, organics, nutrients, and heavy metals suggested that both ceramic filtration and alum coagulation can be effectively used for stormwater treatment. Effluent qualities of both the ceramic filter and alum coagulation met the standards, for recycling/reuse of wastewater, set by the Kingdom of Saudi Arabia and World Health Organization for unrestricted irrigation and toilet flushing. The study results revealed that ceramic filtration is a low-cost, energy efficient, and easy to maintain technology which can be complimentary to best management practices for stormwater.Urban stormwater runoff transports a wide range of pollutants (generated by anthropogenic and biogenic activities) into the receiving water bodies (i.e., retention ponds and natural drains) that exceed the maximum contamination limits set for recycling as well as groundwater recharge. Stormwater runoff can be polluted by organics, nutrients such as phosphorus and nitrogen, hydrocarbons, oils, and heavy metals originating from fertilizers, automobile emissions, agriculture, soil erosion, yard waste, and detergents [4][5][6]. Moreover, stormwater can be contaminated by intrusion of emerging pollutants from cross-contamination or overflows of municipal sewers [7,8].Physical, chemical, and microbiological characteristics of stormwater usually do not comply with the desired water quality standards either for non-potable water applications or artificial groundwater recharge [9][10][11]. Several low-impact design (LID) technologies including bioswales, constructed wetlands, vegetated filter strips, and media filters have been employed for stormwater management [12][13][14]. Some of the LID techniques such as bioswales, constructed wetlands, and vegetated filter strips simulate the use of natural sys...

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“…The simple ceramic filter was manufactured according to previous studies Shafiquzzaman et al, 2011). Soil from Bangladesh and rice bran were used as materials.…”

Section: Simple Ceramic Filtermentioning

confidence: 99%

Operational Factors in Membrane Bioreactors Using a Simple Ceramic Filter

Hasan

Nakajima

2014

J. of Wat. ^|^ Envir. Tech.

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To explore the cost reduction of water reclamation and reuse facilities in developing countries, a simple ceramic filter made of local materials, such as clay and rice bran, was used in a membrane bioreactor (MBR) process. The feasibility of applying suction filtration to an MBR with a simple ceramic filter was examined by a laboratory-scale experiment; successful results using gravity filtration were reported in a previous paper. The BOD removal performance was satisfactory and demonstrated the feasibility of reusing effluent water for many purposes. The MBR operation with a flux less than 0.2 m/d showed a lower risk of fouling; increasing the flux caused an increase in fouling risk. The suction filtration and gravity filtration results were compared using the total resistance of the filter (R) and the resistance change rate (dR/dt). The R and dR/dt values were estimated higher in the suction filtration compared to those in the gravity filtration. The high dR/dt seemed to cause the necessity of the filter cleaning. The gravity filtration was suggested to be a more advantageous operation than the suction filtration in MBR using the simple ceramic filter.

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Development of a Simple, Effective Ceramic Filter for Arsenic Removal

Cited by 18 publications

References 32 publications

Experimental Study for Sand Filter Backwash Water Management: Low-Cost Treatment for Recycling and Residual Sludge Utilization for Radium Removal

Experimental Study for Sand Filter Backwash Water Management: Low-Cost Treatment for Recycling and Residual Sludge Utilization for Radium Removal

Evaluation of a Low-Cost Ceramic Filter for Sustainable Reuse of Urban Stormwater in Arid Environments

Operational Factors in Membrane Bioreactors Using a Simple Ceramic Filter

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