Efficient and rapid removal of EDTA-chelated Pb(II) by the Fe(III)/flue gas desulfurization gypsum (FGDG) system.

07:00 EST 31st January 2019 | BioPortfolio

Summary of "Efficient and rapid removal of EDTA-chelated Pb(II) by the Fe(III)/flue gas desulfurization gypsum (FGDG) system."

This study introduces the application of the Fe(III)/flue gas desulfurization gypsum (FGDG) system to remove EDTA-chelated Pb(II). Systematic experiments were conducted to explore the possibility of removing EDTA-chelated Pb(II) and the crucial factors of the removal process, as well as to determine the underlying removal mechanism. The results showed that the removal reaction was a quick process, with the removal rate exceeding 90% after 1 min. The system removed 97.35% of EDTA-chelated Pb(II), reducing its concentration from 700 mg/L to 18.81 mg/L. EDTA-chelated Pb(II) can be most effectively removed at pH 2. This system had a high removal rate from 50 mg/L to 1000 mg/L of EDTA-chelated Pb(II), particularly at 700 mg/L when the removal rate reached 97.35%. When the molar ratio of Fe(III)/Pb(II) was greater or smaller than 1:1, an inhibitory effect on removal was observed. TOC and UV-Vis analyses indicated that ferric ions replaced lead ions, resulting in the conversion of the EDTA-chelated Pb(II) to EDTA-chelated Fe(III). Surface structure, crystalline phase and elemental distribution were analyzed to explore the transformation of substances. The results indicated that FGDG coprecipitated with free lead ions to form lead sulfate. Overall, the rapid and efficient removal performance with cost-effective characteristics makes the Fe(III)/FGDG system a potentially attractive method for the removal of EDTA-chelated Pb(II)in wastewater.


Journal Details

This article was published in the following journal.

Name: Journal of colloid and interface science
ISSN: 1095-7103
Pages: 379-386


DeepDyve research library

PubMed Articles [11005 Associated PubMed Articles listed on BioPortfolio]

Efficient utilisation of flue gas desulfurization gypsum as a potential material for fluoride removal.

This study introduces the use of a waste by-product from wet limestone flue gas desulfurization as a potential material for fluoride removal. Systematic laboratory-scale experiments were tested to ide...

A novel sulfate removal process by ettringite precipitation with aluminum recovery: Kinetics and a pilot-scale study.

A novel sulfate removal process via ettringite precipitation was developed by dissolving ettringite and recycling Al under low pH condition. Effects of solid to liquid ratios, pH and temperature on et...

A potential source for PM: Analysis of fine particle generation mechanism in Wet Flue Gas Desulfurization System by modeling drying and breakage of slurry droplet.

Aerosol particulate matter with dynamic diameter smaller than 2.5 μm (PM) is the main cause for haze pollution in China. As a dominant precursor of PM, SO emitted from industrial process is now str...

Effect of impure components in flue gas desulfurization (FGD) gypsum on the generation of polymorph CaCO during carbonation reaction.

As one of the typical solid-wastes, FGD gypsum usually occupies land and causes resource waste and environmental pollution. Its high content of CaSO·2HO shows highly potential in synthesizing CaCO by...

Highly efficient absorption of nitric oxide by Ru(edta) aqueous solutions at low concentrations.

In this paper, Ru(edta) was used as a highly efficient absorbent for the removal of NO due to its desirable properties of high NO affinity and oxygen insensitivity. The effects of the Ru(edta) concent...

Clinical Trials [2895 Associated Clinical Trials listed on BioPortfolio]

Evaluation of Bacterial and Fungal Contamination During Propofol Continuous Infusion

The purpose of this study is to verify the existence of bacterial and/or fungal contamination during different technics of propofol with or without EDTA continuous infusion in patients und...

Determining Normal Values of BNP Levels for the Minicare BNP IVD Assay.

Main objective is to determine normal values for BNP levels for the Minicare BNP using K2-EDTA venous whole blood and K2-EDTA plasma samples from healthy subjects. K2-EDTA whole blood and...

Simvastatin Gel With Perforated Resorbable Membranes in Treatment of Intrabony Defects in Chronic Periodontitis

Modified perforated membrane (MPM) is considered as a modality that could enable participation of periosteal cells and gingival stem cells which could improve the outcomes of guided tissue...

Comparison of Antibacterial Efficacy of Three Final Irrigants

This study was conducted to determine the antibacterial affect of three different solutions used as final irrigant during endodontic therapy. The investigator's objective was to compare th...

Oximetry Guided Versus Traditional Rapid Deflation Technique for Achieving Hemostasis After Radial Procedures

After performing a radial angiography/percutaneous coronary intervention (CAG/PCI), the sheath is removed and a compression device is used to achieve hemostasis. Recent studies have indica...

Medical and Biotech [MESH] Definitions

Complex of iron atoms chelated with carbonyl ions.

A calcium salt that is used for a variety of purposes including: building materials, as a desiccant, in dentistry as an impression material, cast, or die, and in medicine for immobilizing casts and as a tablet excipient. It exists in various forms and states of hydration. Plaster of Paris is a mixture of powdered and heat-treated gypsum.

An enzyme the catalyzes the degradation of insulin, glucagon and other polypeptides. It is inhibited by bacitracin, chelating agents EDTA and 1,10-phenanthroline, and by thiol-blocking reagents such as N-ethylmaleimide, but not phosphoramidon. (Eur J Biochem 1994;223:1-5) EC

Surgical removal of an obstructing clot or foreign material which has been transported from a distant vessel by the bloodstream. Removal of a clot at its original site is called THROMBECTOMY.

Removal of an implanted therapeutic or prosthetic device.

Quick Search


DeepDyve research library

Searches Linking to this Article