Preparation and characterization of a nigerian mesoporous clay-based membrane for uranium removal from underground water

Abubakar, Muazu; Tamin, Mohd Nasir; Saleh, Muneer Aziz; Uday, M. B.; Ahmad, Norhayati

doi:10.1016/j.ceramint.2016.02.031

Cited by 21 publications

(12 citation statements)

References 30 publications

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“…The transformation of clays at various temperatures is heating rate dependent; heating rate of 3-20°C/min is enough to cause the transformation of metakaolin to mullite without the formation of intermediate spinel phase (Castelein et al, 2001). The XRF chemical composition of the clay was found to be 48.86% SiO 2 , 37.83% Al 2 O 3 , 1.15% K 2 O, 0.27% Fe O 3 , 0.05wt% CaO, 0.04% TiO 2 , 0.04% MgO, 0.01% MnO, 0.01% P 2 O 5 and 11.81% LOI (Abubakar et al, 2016). Fig.…”

Section: Raw Materials Characterizationmentioning

confidence: 92%

Mesoporosity, thermochemical and probabilistic failure analysis of fired locally sourced kaolinitic clay

Abubakar

Basheer

Ahmad

2017

Journal of the Association of Arab Universities for Basic and A

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A dense and mesoporous ceramic from locally sourced Nigerian clay under fracturestrength test were produced and the reliability analysis of the fractured strength was conducted using a three-parameter Weibull probability distribution. The samples were prepared by addition of starch (0-20wt%), pressed at 60 MPa and fired at 1300°C. The as-received Nigerian clay, dense and porous ceramic were characterized using XRD, XRF, TGA/DTA, PSD, multi-point BET and FESEM. The fracture strength of the samples (33 each) was determined using a three-point bending test. The fracture strength data were analyzed using three-parameter Weibull probability distribution. From the characterization results, a mullite ceramic formed at a sintering temperature of 1300°C. The threshold strength for the three-parameter Weibull provides the strength below which the dense and the porous ceramic will not fail. The Weibull moduli of the ceramics at different starch compositions show that failure modes in these materials are not identical. The Weibull modulus increases with increase in percentage starch from 0% to 15%. However, the value decreases with 20% starch addition. Reliability analysis provides a detailed interpretation and assessment of the fracture strength of the porous ceramics.

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Section: Raw Materials Characterizationmentioning

confidence: 92%

Mesoporosity, thermochemical and probabilistic failure analysis of fired locally sourced kaolinitic clay

Abubakar

Basheer

Ahmad

2017

Journal of the Association of Arab Universities for Basic and A

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“…Low-cost membranes prepared from various naturally available or waste materials have also wide application in the water treatment process [15,171]. According to the publications so far, applications of low-cost membranes can be classified as follow: as a support layer for further membrane preparation [66,68,132,172], microfiltration of suspended solid particles [36], oil droplets [32], dye from textile industry [116], bacteria [11,49], humic acid [126], ultrafiltration of uranium and other heavy metals [20,35,66], see Figure 10.…”

Section: Application Areas Of Low-cost Inorganic Membranesmentioning

confidence: 99%

Materials and Applications for Low-Cost Ceramic Membranes

2019

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In water treatment applications, the use of ceramic membranes is associated with numerous advantages relative to polymer-based filtration systems. High-temperature stability, fouling resistance, and low maintenance requirements contribute to lower lifecycle costs in such systems. However, the high production costs of most commercially available ceramic membranes, stemming from raw materials and processing, are uneconomical for such systems in most water treatment applications. For this reason, there is a growing demand for new ceramic membranes based on low-cost raw materials and processes. The use of unrefined mineral feedstocks, clays, cement, sands, and ash as the basis for the fabrication of ceramic membranes offers a promising pathway towards the obtainment of effective filtration systems that can be economically implemented in large volumes. The design of effective ceramic filtration membranes based on low-cost raw materials and energy-efficient processes requires a balance of pore structure, mass flow, and robustness, all of which are highly dependent on the composition of materials used, the inclusion of various pore-forming and binding additives, and the thermal treatments to which membranes are subjected. In this review, we present recent developments in materials and processes for the fabrication of low-cost membranes from unrefined raw materials, including clays, zeolites, apatite, waste products, including fly ash and rice husk ash, and cement. We examine multiple aspects of materials design and address the challenges relating to their further development.

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“…Years later, BET analysis was employed to study the detailed pore structure of low-cost membranes from clay. For example, Abubakar et al, [14] studied the development of an inexpensive clay membrane from Nigeria; a mesoporous membrane with pore size in the range 5.116.5-6.59 nm was reported. In a similar work, Abubakar et al, [5] studied the effect of milling time on the performance of membranes from ball clay were mesoporous membranes with pore sizes in the range 23.56-38.86 nm.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Clay-Based Ceramic Membrane for Tannery Wastewater Treatment

Abubakar

Ahmad²

2023

ARASET

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In this work, a porous clay-based ceramic membrane was developed from locally sourced clay from Nigeria. The clay was ground and sieved through 100 μm size. The chemical, mineralogical, thermal and particle size properties of the clay were determined using XRF, XRD, TGA/DTA and PSD respectively. Starch composition from 10-25 wt% was added to the clay and thoroughly mixed with water. The dough was cast on a potter’s wheel. The produced membranes were fired at a temperature of 900 °C. The maturation properties of the fired clay were determined using bulk density and apparent porosity. Multi-point BET was used to determine the pore characteristics of the membranes. The flexural strength of the produced membrane was determined using a three-point bending test. The microstructure of the fired clay was recorded using FESEM. Membranes produced from the clay were used for the treatment of tannery wastewater. The XRF result shows that the clay contains high silica and alumina. Also, the XRD results show the clay contains many peaks of montmorillonite and other peaks of feldspar and quartz. The BET shows that the pore size of the membranes produced was in the mesoporous range. From water quality test, it shows that the locally sourced clay can be used to produce ceramic membranes for filtration and separation applications.

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Preparation and characterization of a nigerian mesoporous clay-based membrane for uranium removal from underground water

Cited by 21 publications

References 30 publications

Mesoporosity, thermochemical and probabilistic failure analysis of fired locally sourced kaolinitic clay

Mesoporosity, thermochemical and probabilistic failure analysis of fired locally sourced kaolinitic clay

Materials and Applications for Low-Cost Ceramic Membranes

Preparation and Characterization of a Clay-Based Ceramic Membrane for Tannery Wastewater Treatment

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