Adsorptive Membranes for Heavy Metals Removal From Water

Adam, Mohd Ridhwan; Hubadillah, Siti Khadijah; Esham, Mohamad Izrin Mohamad; Othman, Mohd Hafiz Dzarfan; Rahman, Mukhlis A.; Ismail, Ahmad Fauzi

doi:10.1016/b978-0-12-812815-2.00012-0

Cited by 13 publications

(8 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Molecular sieving and filtration rejects any solutes larger than the membrane's pore size when water-containing solutes come into contact with the active layer of the membrane (Figure 8). Smaller solutes will pass through the active layer and into the support layer, which acts as an adsorption microsphere [19,102]. These solutes then react/bind to form a tight internal spherical complex, resulting in filtered water permeating from the adsorptive membrane that meets the requisite standards [103].…”

Section: Polymeric Membrane and Biopolymersmentioning

confidence: 99%

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Adeola

Nomngongo

2022

Polymers

View full text Add to dashboard Cite

Water pollution remains one of the greatest challenges in the modern era, and water treatment strategies have continually been improved to meet the increasing demand for safe water. In the last few decades, tremendous research has been carried out toward developing selective and efficient polymeric adsorbents and membranes. However, developing non-toxic, biocompatible, cost-effective, and efficient polymeric nanocomposites is still being explored. In polymer nanocomposites, nanofillers and/or nanoparticles are dispersed in polymeric matrices such as dendrimer, cellulose, resins, etc., to improve their mechanical, thermophysical, and physicochemical properties. Several techniques can be used to develop polymer nanocomposites, and the most prevalent methods include mixing, melt-mixing, in-situ polymerization, electrospinning, and selective laser sintering techniques. Emerging technologies for polymer nanocomposite development include selective laser sintering and microwave-assisted techniques, proffering solutions to aggregation challenges and other morphological defects. Available and emerging techniques aim to produce efficient, durable, and cost-effective polymer nanocomposites with uniform dispersion and minimal defects. Polymer nanocomposites are utilized as filtering membranes and adsorbents to remove chemical contaminants from aqueous media. This study covers the synthesis and usage of various polymeric nanocomposites in water treatment, as well as the major criteria that influence their performance, and highlights challenges and considerations for future research.

show abstract

Section: Polymeric Membrane and Biopolymersmentioning

confidence: 99%

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Adeola

Nomngongo

2022

Polymers

View full text Add to dashboard Cite

show abstract

“…The size of the tunnel gives them great mobility and therefore allows easy substitutions. 52 A first type of substitution consists of an exchange of Me 2+ , XO 4 3− or Y − ions by other ions of the same charge but of different size. 53 This type of substitution has the following consequences: It is known that, in general, the substitution of ions Me 2+ or XO 4 3− by ions of the same charge and of different size leads to a variation of the crystallographic parameters a and c in the same direction.…”

Section: Properties Of Apatitesmentioning

confidence: 99%

“…Metals concerned include nickel (Ni), lead (Pb), arsenic (As), chromium (Cr) and mercury (Hg). 4 These heavy metals are commonly found in everyday life and are classified as highly harmful metals. 5 Highly or excessive levels of heavy metals in aquatic environment or even small doses of very toxic metals such as mercury can cause major threat to livestock and human health.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Review—Application of Deficient Apatites Materials in Electrochemical Detection of Heavy Metals: Case of Mercury (II) in Seawater and Fish Samples

Lahrich

Mhammedi

2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

Contamination by metallic trace elements is considered a serious problem considering their toxicity and their cumulative power in the food chain. These heavy metals such as mercury (II) are thus monitored and recognized today as pollutants dangerous for humans and their environment. In this review, we look back at 10 years of our dedicated research, and summarize the main advances made in terms of exploitation of apatitic materials for the detection of heavy metals. Recent trends in the application of apatite compounds for electrochemical detection of heavy metals are shown. In this perspective, the present work focuses on the development of electrochemical sensors based on new deficient apatites materials. The proposed sensors revealed a high efficiency for the analysis of mercury ions with a stable and amplified signal. This latter has been optimized by varying the nature and content of the substituents in the gap apatite structure. The adsorption characteristics of these materials serve to trap inorganic micropollutant like mercury. Moreover, the modification of the surface properties of graphite carbon electrodes by newly lacunar apatites has served to control the quality of seawater and fish samples with satisfactory results.

show abstract

“…Among them, membrane processes have shown interesting results [11][12][13]. In terms of pore sizes, there are four types of membranes; microfiltration (MF) (0.05-1.0 µm), ultrafiltration (UF) (0.005-0.5 µm), nanofiltration (NF) (0.0005-0.01 µm), and reverse osmosis (RO) (0.0001-0.001 µm [14].…”

Section: Introductionmentioning

confidence: 99%

Membrane Processes Treatment and Possibility of Agriculture Reuse of Textile Effluents: Study Case in Tunisia

Mzahma

Duplay

Souguir

et al. 2023

Water

View full text Add to dashboard Cite

Several processes have been developed to treat the textile effluents. Membrane technologies are among the most reliable processes for purifying these effluents. However, due to high costs, only reduced quantities are being treated. The recycling practices of treated textile effluents (TTE) in agriculture have not been appropriately explored. This work evaluates the quality of waters treated by membrane processes and puts forward a scenario for optimizing TTEs in agriculture. Four types of TTE have been tested to irrigate Sesbania bispinosa plants: water from biological treatment (BT) and water from three membrane processes after BT (Ultrafiltration (UF), Nanofiltration (NF), and Reverse Osmosis (RO)). The results indicate that the NF and RO membranes have a high affinity to remove monovalent and multivalent ions. Indeed, the removal of SO42−, Na+, and Cl− by NF was 83, 61, and 55%, respectively. Thus, the RO reduces approximately 96% of these elements. Irrigation with NF and RO waters has no negative effect on the soil and Sesbania plants, contrary to BT and UF waters. It appears that the reuse of TTE resulting from BT is not a good alternative; however, by carrying out additional treatments by NF and RO, their reuses have been made possible. The achieved results are a proposal to simultaneously solve three major problems affecting most of the world’s population: (1) environmental pollution by reducing the discharge of untreated textile effluents and improving the quality of this discharged water; (2) the pressure on water resources in the agricultural sector by replacing a conventional resource with a non-conventional resource (TTE); and (3) the lack of fodder, especially in the summer, by opting for crops that adapt to the quality of these TTE.

show abstract

Adsorptive Membranes for Heavy Metals Removal From Water

Cited by 13 publications

References 78 publications

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Review—Application of Deficient Apatites Materials in Electrochemical Detection of Heavy Metals: Case of Mercury (II) in Seawater and Fish Samples

Membrane Processes Treatment and Possibility of Agriculture Reuse of Textile Effluents: Study Case in Tunisia

Contact Info

Product

Resources

About