Next Article in Journal
Application of Semipermeable Membranes in Glucose Biosensing
Previous Article in Journal
What Ion Flow along Ion Channels Can Tell us about Their Functional Activity
Article Menu

Export Article

Open AccessFeature PaperArticle
Membranes 2016, 6(4), 54; doi:10.3390/membranes6040054

Treated Seawater as a Magnesium Source for Phosphorous Recovery from Wastewater—A Feasibility and Cost Analysis

Department of Chemistry and Bioscience—Section for Chemistry, Aalborg University, Fredrik Bajers vej 7H, Aalborg Ø 9220, Denmark
*
Author to whom correspondence should be addressed.
Academic Editor: Bart Van der Bruggen
Received: 2 November 2016 / Revised: 5 December 2016 / Accepted: 6 December 2016 / Published: 13 December 2016
(This article belongs to the Special Issue Membrane Nanofiltration and Reverse Osmosis)
View Full-Text   |   Download PDF [3805 KB, uploaded 13 December 2016]   |  

Abstract

Conventional resources of phosphorous are at high risk of depletion in the near future due to current practices of its exploitation, thus new and improved exploration methodologies need to be developed to ensure phosphorous security. Today, some treatment plants recover phosphorous from municipal wastewater as struvite (MgNH4PO4·6H2O). Magnesium is often added to the wastewater as MgCl2·6H2O to facilitate the phosphorous recovery. However, the use of magnesium increases the costs of the process and is not aligned with sustainable development, therefore, alternative magnesium sources have to be found. The current study analyzes the feasibility of integrated membrane processes for magnesium recovery from seawater for utilization in the phosphorous recovery process. The integrated membrane systems consist of nanofiltration (NF), membrane distillation (MD), and membrane crystallization (MCr). The lowest associated cost is found for standalone NF treatment. However, the additional treatment with MD and MCr produces fresh water and salts like NaCl or potentially other valuable minerals at the expense of low-grade heat. View Full-Text
Keywords: resource recovery; integrated membrane systems; nanofiltration; membrane distillation; membrane crystallization resource recovery; integrated membrane systems; nanofiltration; membrane distillation; membrane crystallization
Figures

Figure 1a

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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

Quist-Jensen, C.A.; Koustrup Jørgensen, M.; Christensen, M.L. Treated Seawater as a Magnesium Source for Phosphorous Recovery from Wastewater—A Feasibility and Cost Analysis. Membranes 2016, 6, 54.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Membranes EISSN 2077-0375 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top