Enhanced As(Ш) removal from aqueous solutions by recyclable Cu@MNM composite membranes via synergistic oxidation and absorption.

08:00 EDT 1st October 2019 | BioPortfolio

Summary of "Enhanced As(Ш) removal from aqueous solutions by recyclable Cu@MNM composite membranes via synergistic oxidation and absorption."

Arsenic contamination threatens the safety of drinking water in many parts of the world, especially As (Ш), which is more toxic and more difficult to remove than As (Ⅴ). Hence, in terms of environmental protection and sustainable development, it is very important to remove As (Ш) from the environment to reduce the damage to ecosystems and human health. Since there is no effective method for removing As (Ш), it is essential to oxidize As (Ш) into easily removable As (Ⅴ) to achieve effective separation. Herein, a novel copper-coated MnO nanowires membrane (Cu@MNM) which combines the oxidation properties of MnO and the catalytic and absorption properties of nanoscale Cu (NSCu), was developed based on in situ chemical deposition NSCu on the surface of ultralong MnO nanowires. The as-prepared Cu@MNM shows excellent arsenic separation properties with the maximum rejection rate of 96%. The results of pH studies indicate that acidic conditions promote the separation of As (Ш) by Cu@MNM, while alkaline conditions are inhibitory due to deprotonation of Cu@MNM surface enhances electrostatic repulsion. The results of the interfering ions show that the phosphate ions have a strong inhibitory effect on arsenic separation. In addition, Cu@MNM has been shown to be remarkably recyclable and can still achieve a separation efficiency of 60% after five cycles. Therefore, the prepared Cu@MNM with the high arsenic retention efficiency and excellent recycling capabilities has the potential to become an excellent candidate for practical application in arsenic separation.


Journal Details

This article was published in the following journal.

Name: Water research
ISSN: 1879-2448
Pages: 115147


DeepDyve research library

PubMed Articles [11720 Associated PubMed Articles listed on BioPortfolio]

Synthesis of super hydrophilic cellulose-alpha zirconium phosphate ion exchange membrane via surface coating for the removal of heavy metals from wastewater.

In this study, commercial cellulose membranes were surface coated with alpha‑zirconium phosphate nanoparticles (α-ZrP-n) to study their impact on the overall removal efficiency of heavy metals from...

Enhanced covalent p-phenylenediamine crosslinked graphene oxide membranes: Towards superior contaminant removal from wastewaters and improved membrane reusability.

The increasing depletion of freshwater necessitates the re-use and purification of wastewaters. Among the existing separation membrane materials, graphene oxide (GO) is a promising candidate, owing to...

TiO photocatalysis under natural solar radiation for the degradation of the carbapenem antibiotics imipenem and meropenem in aqueous solutions at pilot plant scale.

This paper deals with the removal of two last-resort antibiotics, namely imipenem and meropenem, in aqueous solutions employing heterogeneous photocatalysis with TiO under natural solar radiation at p...

A review of graphene-based nanomaterials for removal of antibiotics from aqueous environments.

Antibiotics as emerging pharmaceutical pollutants have seriously not only threatened human life and animal health security, but also caused environmental pollution. It has drawn enormous attention and...

Halide-induced dissolution of lead(IV) oxide in frozen solution.

The dark dissolution behavior of plattnerite (ß-PbO) was investigated in frozen solutions containing halide ions and compared with those in aqueous solution. The amount of dissolved lead in the froze...

Clinical Trials [3782 Associated Clinical Trials listed on BioPortfolio]

Removal Versus Retention of Cerclage in Preterm Premature Rupture of Membranes (PPROM)

The purpose of this study is to determine whether retention of cervical cerclage after PPROM improves latency (without a significant increase in chorioamnionitis) and lessens neonatal morb...

A Study on the Effects of Dextrose Solutions on the Course of Labor

The purpose is to determine in term nulliparas with singletons that present in active labor (3-5 cm) or with ruptured membranes whether the administration of dextrose solutions to normal s...

A Study Comparing Shared Solutions® Plus MS Center Support Versus Shared Solutions® Alone

To compare the effectiveness of a 90-day Copaxone® adherence enhancement program for a sample of MS patients who are at high risk of nonadherence and receive support from Shared Solutions...

Clinical Investigation of the F-Composite 2 System in Direct Filling Therapy

The objective of this study is to evaluate the clinical performance of the new restorative F-Composite 2 system for Class I and Class II cavities that need to be restored in permanent teet...

PRO-MComplete for Determination of Rupture of Fetal Membranes

Premature rupture of membranes refers to the rupture of the fetal membranes prior to the onset of labor. Premature rupture of membranes is associated with a number of neonatal and maternal...

Medical and Biotech [MESH] Definitions

An increase in MITOCHONDRIAL VOLUME due to an influx of fluid; it occurs in hypotonic solutions due to osmotic pressure and in isotonic solutions as a result of altered permeability of the membranes of respiring mitochondria.

Sterile solutions, essentially free from foreign particles and suitably compounded and dispensed, for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS. (From Dorland, 27th ed)

Local antibacterial that probably acts by releasing formaldehyde in aqueous solutions. It is used for irrigation of infected body cavities - bladder, peritoneum, etc. and as a spray for burns.

A strong oxidizing agent used in aqueous solution as a ripening agent, bleach, and topical anti-infective. It is relatively unstable and solutions deteriorate over time unless stabilized by the addition of acetanilide or similar organic materials.

An anionic surfactant, usually a mixture of sodium alkyl sulfates, mainly the lauryl; lowers surface tension of aqueous solutions; used as fat emulsifier, wetting agent, detergent in cosmetics, pharmaceuticals and toothpastes; also as research tool in protein biochemistry.

Quick Search

DeepDyve research library

Relevant Topic

Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...

Searches Linking to this Article