The removal of zinc from synthetic wastewaters by micellar-enhanced ultrafiltration: statistical design of experiments

Landaburu-Aguirre, Junkal; García, Verónica; Pongrácz, Éva; Keiski, Riitta L.

doi:10.1016/j.desal.2007.11.077

Cited by 146 publications

(43 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The Cr(VI) removal by these techniques is conducted by electrostatic interactions between the contaminant and the membrane surface or by the molecular size. Therefore, the porous size of the membranes is an important factor in preventing the dissolved metallic ions or the low molecular weight complexes from passing through the membrane (Landaburu-Aguirre et al 2009). The ionic exchange process uses natural or synthetic resins that have the specific capacity to exchange their ions with the heavy metals that are present in the wastewater (Kang et al 2007), but the last ones are commonly preferred due to their ability to eliminate almost all of the metallic ions (Alyüz and Veli 2009).…”

Section: Removal Techniques For Cr(vi)mentioning

confidence: 99%

Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

García-Hernández

Villarreal-Chiu

Garza-González

2017

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Contamination by hexavalent chromium has had a large impact on modern society and human health. This problem is a consequence of its great industrial applicability to several products and processes. Short-term exposure to hexavalent chromium can cause irritation, ulceration in skin and stomach and in addition to cancer, dermatitis, and damage to liver, renal circulation and nervous tissues, with even death being observed in response to long-term exposures. Many techniques have been used for the remediation of this pollutant, including physical and chemical approaches and, in more recent years, biological methods. Filamentous fungi isolated from contaminated sites exhibit a significant tolerance to heavy metal; hence, they are an important source of microbiota capable of eliminating hexavalent chromium from the environment. However, these microorganisms can do so in different ways, including biosorption, bioreduction, and bioaccumulation, among others. In this review, we explore several of the most documented mechanisms that have been described for fungi/hexavalent chromium interactions and their potential use in bioremediation.

show abstract

Section: Removal Techniques For Cr(vi)mentioning

confidence: 99%

Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

García-Hernández

Villarreal-Chiu

Garza-González

2017

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…In electrochemical treatment the high flow real plating wastewater (Bohdziewicz, 2000) The anionic-based resin was used in hydroxide form in the column and 100% removal of chromium (VI) was obtained. Other ion exchange resin, Ambersep 132 was used to recover chromic acid from synthetic plating solution in four steps (Landaburu-Aguirre et al, 2009) In the first step, ion-exchange resin captures the chromic acid, and in the second step, it is reacted with sodium hydroxide solution and transformed into sodium chromate In the third step, cationic ion-exchange resin was used to again transfer the sodium chromate into chromic acid, and in the final fourth step, the ion-exchange resin reacts with hydrochloric acid (HCL) to regenerate it again This fourth step is shown to be effective and also accomplished to provide continuous chromic acid. Solventimpregnated resin (SIR) with aliquot 336 is prepared by (Kabay) (Kabay, Arda, Saha, & Streat, 2003) and batch adsorption studies will be done.…”

Section: Electrocoagulation For Nickel (Ii)mentioning

confidence: 99%

Remediation techniques applied for aqueous system contaminated by toxic Chromium and Nickel ion

Kumar

Balouch

Pathan

et al. 2017

Geology, Ecology, and Landscapes

View full text Add to dashboard Cite

Heavy metals contamination in environment is a global problem. Environment is polluted by different toxic metals due to industrial sources and anthropogenic activities. Variety of methodologies has been applied for the purification of waste water. Thus, article mainly focuses on the current developments and applicability of various wastewater treatment techniques, i.e., adsorption, membrane filtration, ion exchange, electrochemical treatment and electrocoagulation. Also, development of new adsorbents especially selective adsorbent, i.e., ion imprinted polymeric materials for selective removal and pre-concentration of toxic Nickel (II) and Chromium (VI) ions has been discussed in detail.

show abstract

“…Among various existing processes there are: ion exchange 2 , the chemical precipitation 3 and ultrafiltration 4 . These methods are not always effective, and usuallyhave high cost and generate waste, thus, requiring a further stage of treatment.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the complex metal-clay obtained in the process of lead adsorption

et al. 2014

View full text Add to dashboard Cite

This study aims to characterize the complex metal-clay formed by adsorption of lead. In this work, the bentonite clay named Fluidgel was calcined at 750 °C and was used as adsorbent for lead removal. The characterization of this clay and complex metal-clay was carried out by X-ray diffraction (XRD), Fourier transformer infrared spectroscopy (FTIR), surface area (BET method), scanning electron microscopy (SEM) and chemical composition by energy dispersive X-ray (EDX). The removal of lead from aqueous solution was carried out in a fixed bed. Dynamic experiments were performed to evaluate the effect of flowrate on adsorption efficiency. The experiments were accomplished at room temperature, the clay adsorbent particle diameter was of 0.855 mm and the flow rate varied from 0.6 to 2 mL/min. The feed concentration of lead was about 0.24 mmol/L. Comparing the chemical compositions of the clays obtained by EDX before and after removal of the lead, it was concluded that the ion exchange process might be important to lead removal. From the semi-quantitative analysis of chemical composition in clays with and without adsorbed lead it was observed a reduction of the amount of Ca 2+ , K + cations and the disappearance of Na + cations, which was caused by cation exchange process.

show abstract

The removal of zinc from synthetic wastewaters by micellar-enhanced ultrafiltration: statistical design of experiments

Cited by 146 publications

References 23 publications

Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

Remediation techniques applied for aqueous system contaminated by toxic Chromium and Nickel ion

Characterization of the complex metal-clay obtained in the process of lead adsorption

Contact Info

Product

Resources

About