Heavy Metal Cationic Wastewater Treatment with Membrane Methods

Kagramanov, G. G.; Farnosova, E. N.; Kandelaki, G. I.

doi:10.1007/978-90-481-3497-7_15

Cited by 7 publications

(5 citation statements)

References 8 publications

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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%

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

confidence: 99%

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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“…Enterprises that use the hydrometallurgical process of processing of nonferrous metal ores are characterized by high profitability of production of the target commercial products, so hydrometallurgy is quite widespread. However, such enterprises are a source of heavy metal pollution of wastewater, which, in most cases, is discharged directly into open water bodies [1]. Extraction of various metals and wastewater treatment is one of the most important tasks of the metallurgical industry, for which sorption methods using inorganic natural and synthetic mineral sorbents are widely used [2,3].…”

Section: Introductionmentioning

confidence: 99%

Development of composition and study of sorbent properties based on saponite

Zubkova

Pyagay

Pankratieva

et al. 2023

PMI

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The development of a comprehensive approach to preventing the pollution of natural objects is necessary due to the high requirements of environmental legislation for the discharge of industrial wastewater. Adsorbents are used in various industries to extract heavy metals from wastewater. In this study the possibility of using saponite clay as a raw material for the production of sorbent for the extraction of copper ions Cu2+ from industrial wastewater is considered, a recipe and technology of sorbent production are developed, and its chemical composition is established. It has been established that the optimum temperature for heat treatment of the sorbent and corresponds to 550 ºC, since at this temperature saponite extrudates acquire strength (strength 34.1 kg/mm2) and textural properties (specific surface area of pellets 22.803 m2/g), allowing them to be used as sorbents. The kinetics of molecular adsorption was studied using model solutions of copper (II) sulfate. The extraction efficiency of copper (II) ions from the model solutions is 93 %. Extraction efficiency of copper (II) ions from copper plating wastewater reaches 94 %. SEM results confirm the presence of metal on the sorbent surface.

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“…The paper [14] proposes a method for wastewater treatment from heavy metal cations, based on the use of slag formed during the complex processing of steel, which has a complex chemical composition and is characterized by a highly developed surface and the presence of a large number of microcracks, pores, and active centers, which determine the sorption properties. slag.…”

Section: Introductionmentioning

confidence: 99%

Purification of wastewater from heavy metal ions using nanostructured adsorbents

Konyratbekova,

Shopanbek,

Nurzhanova

et al. 2023

KIMS/CUMR/MShKP

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The activities of industrial enterprises in ferrous and non-ferrous metallurgy and other industries lead to environmental pollution with wastewater containing harmful substances that, even in small quantities, have a rather serious negative impact on human health and the state of the biosphere. There are a large number of natural sorbents used to solve water treatment problems. Among inorganic sorption materials, zeolites are widely used in practice. These natural materials have thermal and radiation stability and high selectivity. The purpose of this article is to study the sorption capacity of zeolites modified with nanostructured rare metals in several ways, with different options for activating the matrix to improve sorption properties with respect to ions of heavy and non-ferrous metals. Based on the experiments conducted, it was proven that zeolites modified with vanadium and titanium nanocompounds are highly effective in removing heavy metal ions from wastewater. The resulting composition on a zeolite matrix creates a highly dispersed solid phase of nanoparticles in the form of a sol-gel. Such systems have an excess of energy, which leads to increased reactivity and adsorbing properties. It is obvious that the activation of zeolites makes it possible to obtain a wider range of active centers of different nature. This determines the varied use of zeolites in the technological system for treating wastewater from heavy and non-ferrous metal ions, which will make it possible to achieve MPC standards.

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Heavy Metal Cationic Wastewater Treatment with Membrane Methods

Cited by 7 publications

References 8 publications

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

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

Development of composition and study of sorbent properties based on saponite

Purification of wastewater from heavy metal ions using nanostructured adsorbents

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