Removal of Pb(II) from wastewater using Al2O3-NaA zeolite composite hollow fiber membranes synthesized from solid waste coal fly ash

Zhu, Li; Ji, Jiayou; Wang, Shulin; Xu, Chenxi; Yang, Kun; Xu, Man

doi:10.1016/j.chemosphere.2018.05.001

Cited by 45 publications

(14 citation statements)

References 37 publications

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“…Generally, membranes fabricated from fly ash have a pore size from 0.18 µm to 7.28 µm, see Table 3. When fly ash is combined with zeolites, it is possible to prepare nanofiltration membranes, as presented by Zhu et al [132], where pore sizes are nanoscale. Dong et al [118] and Zhu et al [123] both used very similar raw materials, preparation techniques, and sintering temperatures.…”

Section: Methodsmentioning

confidence: 99%

“…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%

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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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Section: Methodsmentioning

confidence: 99%

Section: Application Areas Of Low-cost Inorganic Membranesmentioning

confidence: 99%

Materials and Applications for Low-Cost Ceramic Membranes

2019

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“…Researchers have used Al 2 O 3 hollow fiber supports and coal fly ash, a byproduct of coal burning, to synthesize Al 2 O 3 -NaA zeolite membranes successfully. The Al 2 O 3 -NaA zeolite membrane has been used to treat wastewater containing lead ions (Pb(Ⅱ), 50 mg L −1 ) and possesses a Pb(Ⅱ) removal rate of 99.9% [108].…”

Section: Reverse Osmosis and Nanofiltration Membranesmentioning

confidence: 99%

A Review on Reverse Osmosis and Nanofiltration Membranes for Water Purification

et al. 2019

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Sustainable and affordable supply of clean, safe, and adequate water is one of the most challenging issues facing the world. Membrane separation technology is one of the most cost-effective and widely applied technologies for water purification. Polymeric membranes such as cellulose-based (CA) membranes and thin-film composite (TFC) membranes have dominated the industry since 1980. Although further development of polymeric membranes for better performance is laborious, the research findings and sustained progress in inorganic membrane development have grown fast and solve some remaining problems. In addition to conventional ceramic metal oxide membranes, membranes prepared by graphene oxide (GO), carbon nanotubes (CNTs), and mixed matrix materials (MMMs) have attracted enormous attention due to their desirable properties such as tunable pore structure, excellent chemical, mechanical, and thermal tolerance, good salt rejection and/or high water permeability. This review provides insight into synthesis approaches and structural properties of recent reverse osmosis (RO) and nanofiltration (NF) membranes which are used to retain dissolved species such as heavy metals, electrolytes, and inorganic salts in various aqueous solutions. A specific focus has been placed on introducing and comparing water purification performance of different classes of polymeric and ceramic membranes in related water treatment industries. Furthermore, the development challenges and research opportunities of organic and inorganic membranes are discussed and the further perspectives are analyzed.

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“…Lead can cause renal, gastrointestinal, and cardiovascular problems in humans. Various treatment techniques such as ion exchange [5], electrocoagulation [6], chemical precipitation [7], membrane separation [8], and adsorption [9] have been developed for removing lead from wastewater. However, adsorption is the most extensively used treatment technique because of its simplicity, effectiveness, and low cost [10].…”

Section: Introductionmentioning

confidence: 99%

Removal of Lead by Merlinoite Prepared from Sugarcane Bagasse Ash and Kaolin: Synthesis, Isotherm, Kinetic, and Thermodynamic Studies

et al. 2021

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This study introduces a merlinoite synthesized from sugarcane bagasse ash (SBA) and kaolin and evaluates its application as an adsorbent to remove lead from wastewater. The synthesis was performed via the hydrothermal method, and optimal conditions were determined. The adsorption of Pb by merlinoite was also optimized. Determination of the Pb2+ remaining in the aqueous solution was determined by atomic absorption spectroscopy (AAS). Adsorption isotherms were mainly studied using the Langmuir and Freundlich models. The Langmuir model showed the highest consistency for Pb adsorption on merlinoite, yielding a high correlation coefficient (R2) of 0.9997 and a maximum adsorption capacity (qmax) of 322.58 mg/g. The kinetics of the adsorption process were best described by a pseudo-second-order model. Thermodynamic studies carried out at different temperatures established that the adsorption reaction was spontaneous and endothermic. The results of this study show that merlinoite synthesized from kaolinite and SBA is an excellent candidate for utilization as a high-performance adsorbent for lead removal from wastewater.

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Removal of Pb(II) from wastewater using Al2O3-NaA zeolite composite hollow fiber membranes synthesized from solid waste coal fly ash

Cited by 45 publications

References 37 publications

Materials and Applications for Low-Cost Ceramic Membranes

Materials and Applications for Low-Cost Ceramic Membranes

A Review on Reverse Osmosis and Nanofiltration Membranes for Water Purification

Removal of Lead by Merlinoite Prepared from Sugarcane Bagasse Ash and Kaolin: Synthesis, Isotherm, Kinetic, and Thermodynamic Studies

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