Digitální knihovnaUPCE
 

Removal of Heavy Metal Ions from Aqueous Solutions by Nanofiltration

Konferenční objektpeer-reviewedpostprint
Náhled není k dispozici

Datum publikování

2016

Vedoucí práce

Oponent

Název časopisu

Název svazku

Vydavatel

AIDIC Servizi s.r.l

Abstrakt

This report presents the results of investigations on the removal of toxic Pb(II) ions from aqueous wastewaters by using two commercial thin-film composite polyamide NF membranes. The influence of the operational variables, i.e. the pressure applied, feed solution pH, and feed solution concentration, on the ability of the NF membranes to remove ions was evaluated. It has been found, for example, that the rejection of lead ions increases with the higher operational pressure, increasing also with higher metal concentration in feed. The solution pH is a parameter which had influenced to a greater extent the separation by the AFC 40 membrane. The maximum rejection of Pb(II) ions achieved above 80 % for AFC 40 and 98 % for AFC 80, respectively, proving that these NF membranes have real potential for efficient removal of metal ions from highly polluted wastewaters The results obtained are discussed in correlation with both the NF membrane properties (pore size and charge) and with the chemistry of the investigated solutions. The role of the steric and electrical interactions in the rejection mechanism of the NF membranes has been finally assessed. The Spiegler-Kedem model describes with high accuracy the experimental rejection data on the concentration range investigated, offering also information about the proper separation mechanism.

Rozsah stran

p. 379-384

ISSN

1974-9791

Trvalý odkaz na tento záznam

Projekt

Zdrojový dokument

International Conference on Nanotechnology Based Innovative Applications for the Environment

Vydavatelská verze

http://www.aidic.it/cet/16/47/064.pdf

Přístup k e-verzi

open access

Název akce

International Conference on Nanotechnology Based Innovative Applications for the Environment (20.03.2016 - 23.03.2016)

ISBN

978-88-95608-38-9

Studijní obor

Studijní program

Signatura tištěné verze

Umístění tištěné verze

Přístup k tištěné verzi

Klíčová slova

membranes, odstraňování, ionty těžkých kovů, membrány, nanofiltrace

Endorsement

Review

item.page.supplemented

item.page.referenced