Use of membranes for heavy metal cationic wastewater treatment: flotation and membrane filtration

Sudilovskiy, P. S.; Kagramanov, G. G.; Trushin, A. M.; Колесников, В. А.

doi:10.1007/s10098-007-0086-7

Cited by 33 publications

(8 citation statements)

References 20 publications

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“…Therefore, the removal of heavy metals from water is of great importance and has drawn tremendous attention. Up till now, numerous technologies have been developed to solve this problem, including chemical precipitation [7], ion exchange [8], adsorption [9], membrane filtration [10], electrochemical treatment [11], and so on. Besides, it is often the case that different techniques are combined for a better removal result [12,13].…”

Section: Introductionmentioning

confidence: 99%

Nanomaterials for the Removal of Heavy Metals from Wastewater

et al. 2019

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Removal of contaminants in wastewater, such as heavy metals, has become a severe problem in the world. Numerous technologies have been developed to deal with this problem. As an emerging technology, nanotechnology has been gaining increasing interest and many nanomaterials have been developed to remove heavy metals from polluted water, due to their excellent features resulting from the nanometer effect. In this work, novel nanomaterials, including carbon-based nanomaterials, zero-valent metal, metal-oxide based nanomaterials, and nanocomposites, and their applications for the removal of heavy metal ions from wastewater were systematically reviewed. Their efficiency, limitations, and advantages were compared and discussed. Furthermore, the promising perspective of nanomaterials in environmental applications was also discussed and potential directions for future work were suggested.

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Section: Introductionmentioning

confidence: 99%

Nanomaterials for the Removal of Heavy Metals from Wastewater

et al. 2019

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“…The ability of ceramic membranes to uniquely address the distinct need of frequent cleaning, high resistance to harsh operating environment and continuous flow conditions are some of their main advantages over other types of membranes or porous barriers [5]. In recent days, it is seen that tremendous attention is given towards membrane-based separation processes for application in different areas including water treatment, catalysis, industrial gas separation and many other biomedical applications [6][7][8][9][10][11][12][13][14][15][16][17][18]. Ceramic membranes can be regenerated for use over many cycles and can be applied to both aqueous and non-aqueous solution separations especially in petrochemical processing where organic membranes cannot be utilized [19].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of low cost flat ceramic membranes from easily available potters’ clay for dye separation

et al. 2019

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In the present day scenario, the crisis of safe drinking water is an extremely serious issue across many parts of the globe and needs efficient methods to overcome this problem. The effort made in this study is to develop a method to prepare a ceramic membrane with locally available cheap compositions such as potters' clay, stone dust and tea waste materials for efficient adsorptive dye removal from water. The preparation of ceramic membrane was carried out by a paste pressing method and sintered at an optimized temperature of 900 • C to obtain flat ceramic membranes of 42 mm in diameter and 3±0.5 mm thickness with good thermal and chemical stabilities with 52.51% porosity and average pore size of 0.49 μm. The membrane was capable of decolouring methylene blue and congo red from water with good efficiency and the used membrane was regenerated by calcining at 400 • C for 30 min without much loss of its efficiency. Development of newer advanced products with the available local resources may be another way to sustain the small scale industry and livelihood of the people around.

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“…The ultrafiltration method is used for the separation of smaller particles than 1000 Å, such as macromolecules or colloids. Nanofiltration and reverse osmosis membranes usually can separate ions and salts, but both need pressure to work [ 259 , 260 , 261 , 262 ].…”

Section: Chitosan-based Nanocomposite Polymeric Membranes: a Case Studymentioning

confidence: 99%

“…To detect contaminants and pollutants from water sources, nanocomposite polymeric membranes-based on chitosan were investigated. Chitosan-based biopolymers are very important because of their high content of amino and hydroxyl groups, good biocompatibility, biodegradability, nontoxicity, reactivity, good hydrophilicity, and cost-effectiveness, which make them essential in water treatment applications [ 188 , 261 , 262 , 276 ]. Chitosan presents hydroxyl and amine groups on its surface, the reason for their wide use in heavy metal removal from wastewaters [ 276 , 277 , 278 , 279 , 280 ]; however, it does have some inconvenience when it comes to its low stability, thermo-mechanical properties and, also, porosity [ 281 ].…”

Section: Chitosan-based Nanocomposite Polymeric Membranes: a Case Studymentioning

confidence: 99%

Chitosan-Based Nanocomposite Polymeric Membranes for Water Purification—A Review

et al. 2021

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During the past few years, researchers have focused their attention on developing innovative nanocomposite polymeric membranes with applications in water purification. Natural and synthetic polymers were considered, and it was proven that chitosan-based materials presented important features. This review presents an overview regarding diverse materials used in developing innovative chitosan-based nanocomposite polymeric membranes for water purification. The first part of the review presents a detailed introduction about chitosan, highlighting the fact that is a biocompatible, biodegradable, low-cost, nontoxic biopolymer, having unique structure and interesting properties, and also antibacterial and antioxidant activities, reasons for using it in water treatment applications. To use chitosan-based materials for developing nanocomposite polymeric membranes for wastewater purification applications must enhance their performance by using different materials. In the second part of the review, the performance’s features will be presented as a consequence of adding different nanoparticles, also showing the effect that those nanoparticles could bring on other polymeric membranes. Among these features, pollutant’s retention and enhancing thermo-mechanical properties will be mentioned. The focus of the third section of the review will illustrate chitosan-based nanocomposite as polymeric membranes for water purification. Over the last few years, researchers have demonstrated that adsorbent nanocomposite polymeric membranes are powerful, important, and potential instruments in separation or removal of pollutants, such as heavy metals, dyes, and other toxic compounds presented in water systems. Lastly, we conclude this review with a summary of the most important applications of chitosan-based nanocomposite polymeric membranes and their perspectives in water purification.

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Use of membranes for heavy metal cationic wastewater treatment: flotation and membrane filtration

Cited by 33 publications

References 20 publications

Nanomaterials for the Removal of Heavy Metals from Wastewater

Nanomaterials for the Removal of Heavy Metals from Wastewater

Preparation and characterization of low cost flat ceramic membranes from easily available potters’ clay for dye separation

Chitosan-Based Nanocomposite Polymeric Membranes for Water Purification—A Review

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