Search
WIT Press


Related Book

Environmental Exposure and Health

Edited By: M.M. ARAL, Georgia Institute of Technology, USA, C.A. Brebbia, Wessex Institute of Technology, UK, M.L. MASLIA, ATSDR/CDC, USA and T. SINKS, ATSDR/CDC, USA

Removal Of Emerging Trace Contaminants By Nanofiltration Membranes

Price

Free (open access)

Transaction

WIT Transactions on Ecology and the Environment

Volume

85

Pages

9

Published

2005

Size

335 kb

Paper DOI

10.2495/EEH050141

Copyright

WIT Press

Author(s)

A. Shah, E. McCallum, H. Hyung, C.-H. Huang & J.-H. Kim

Abstract

This study addresses the possibility for nanofiltration (NF) membrane processes to remove low levels of selected antibiotics and natural hormones from wastewaters and surface waters given changing water quality parameters such as pH and presence of natural organic matter (NOM). Preliminary experimental results suggest that adsorption of antibiotics onto the membrane surface is negligible. However, removal is greatly affected by changes in pH due to changes in electrostatic repulsion between charged antibiotics and membrane surfaces. On the contrary, the NF membranes showed a significant level of adsorption of 17β-estradiol (E2) during the initial stage of filtration. The adsorbed E2 was easily desorbed when the feed solution was replaced with clean reagent water. The level of hormone rejection was higher at increased pressure and recovery. 1 Introduction Hormones and antibiotics are groups of emerging contaminants that have been detected at low concentrations in drinking water sources influenced by domestic wastewater effluents [1-4]. Although concentrations of hormones in surface waters are typically less than several ng/L, hormones have a much higher endocrine disrupting potency than most other endocrine disrupting compounds (EDCs) such as pesticides that are present at higher concentrations [1, 5]. In addition, low levels of antibiotics in the environment may promote bacterial resistance as well as trigger long-term adverse health effects in humans [6, 7]. Because conventional treatment processes are ineffective at removing these trace contaminants, recent studies have suggested pressure-driven membrane processes such as nanofiltration (NF) as a promising alternative.

Keywords



Related Book

Environmental Exposure and Health

Edited By: M.M. ARAL, Georgia Institute of Technology, USA, C.A. Brebbia, Wessex Institute of Technology, UK, M.L. MASLIA, ATSDR/CDC, USA and T. SINKS, ATSDR/CDC, USA

Other papers in this volume

Warning (2) : foreach() argument must be of type array|object, null given [in /var/www/dce7ae55-385b-4ffa-8595-3ec5e61ff110/public_html/app/templates/Papers/view.php, line 364]

Keep me updated
Environmental Exposure and Health

View Book

Other papers in this volume

Stochastic Air Quality Analysis

Population Exposure To Atmospheric Pollutants: The Influence Of Urban Structure

Comparison Of Fine Particulate Matter And Ozone Levels In Zip Code Areas Of New York City With Different Child Asthma Burdens

Outdoor Measurements Of Airborne Emission Of Staphylococci From A Broiler Barn And Its Predictability By Dispersion Models

Relating Air Quality And Environmental Public Health Tracking Data

Standard Guide For Building Indoor Dispersion Analysis, Modeling And Health Effect Assessment

Multiple Chemical Sensitivity As A Result Of Exposure To Heterogeneous Air Pollutants

WIT Press, Ashurst Lodge, Ashurst, Southampton SO40 7AA, UK. Registered in England as a limited company No. 4741634

Copyright 2025 WIT Press All Rights Reserved - Prices are Subject to Change - Returns Policy - Privacy Policy - Site Map