Next Article in Journal
The Impact of Field Size on the Environment and Energy Crop Production Efficiency for a Sustainable Indigenous Bioenergy Supply Chain in the Republic of Ireland
Next Article in Special Issue
Water Management in a State-Centered Environment: Water Governance Analysis of Uzbekistan
Previous Article in Journal
Resource Allocation for Sustainable Urban Transit from a Transport Diversity Perspective
Previous Article in Special Issue
Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management
Article Menu

Export Article

Open AccessArticle
Sustainability 2009, 1(4), 978-993; doi:10.3390/su1040978

Membrane Processes Based on Complexation Reactions of Pollutants as Sustainable Wastewater Treatments

Department of Chemical Engineering and Materials, University of Calabria, Via P. Bucci, 44/A, I-87030 Rende (CS), Italy
*
Author to whom correspondence should be addressed.
Received: 12 October 2009 / Accepted: 30 October 2009 / Published: 4 November 2009
(This article belongs to the Special Issue Sustainable Water Management)
View Full-Text   |   Download PDF [142 KB, uploaded 24 February 2015]   |  

Abstract

Water is today considered to be a vital and limited resource due to industrial development and population growth. Developing appropriate water treatment techniques, to ensure a sustainable management, represents a key point in the worldwide strategies. By removing both organic and inorganic species using techniques based on coupling membrane processes and appropriate complexing agents to bind pollutants are very important alternatives to classical separation processes in water treatment. Supported Liquid Membrane (SLM) and Complexation Ultrafiltration (CP-UF) based processes meet the sustainability criteria because they require low amounts of energy compared to pressure driven membrane processes, low amounts of complexing agents and they allow recovery of water and some pollutants (e.g., metals). A more interesting process, on the application point of view, is the Stagnant Sandwich Liquid Membrane (SSwLM), introduced as SLM implementation. It has been studied in the separation of the drug gemfibrozil (GEM) and of copper(II) as organic and inorganic pollutants in water. Obtained results showed in both cases the higher efficiency of SSwLM with respect to the SLM system configuration. Indeed higher stability (335.5 vs. 23.5 hours for GEM; 182.7 vs. 49.2 for copper(II)) and higher fluxes (0.662 vs. 0.302 mmol·h-1·m-2 for GEM; 43.3 vs. 31.0 for copper(II)) were obtained by using the SSwLM. Concerning the CP-UF process, its feasibility was studied in the separation of metals from waters (e.g., from soil washing), giving particular attention to process sustainability such as water and polymer recycle, free metal and water recovery. The selectivity of the CP-UF process was also validated in the separate removal of copper(II) and nickel(II) both contained in synthetic and real aqueous effluents. Thus, complexation reactions involved in the SSwLM and the CP-UF processes play a key role to meet the sustainability criteria. View Full-Text
Keywords: wastewater treatment; Supported Liquid Membrane; Sandwich Liquid Membrane; Complexation-Ultrafiltration; sustainable water management wastewater treatment; Supported Liquid Membrane; Sandwich Liquid Membrane; Complexation-Ultrafiltration; sustainable water management
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Molinari, R.; Argurio, P.; Poerio, T. Membrane Processes Based on Complexation Reactions of Pollutants as Sustainable Wastewater Treatments. Sustainability 2009, 1, 978-993.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top