Retentions of bisphenol A and norfloxacin by three different ultrafiltration membranes in regard to drinking water treatment

Natural organic matter (NOM) plays a significant role in the fouling of ultrafiltration membranes in drinking water treatment processes. For a better understanding of the interaction between fractional components of NOM and polysulfone (PS) ultrafiltration membranes used for drinking water treatment, fouling and especially the physically irreversible fouling of natural organic matter were investigated. Resin fractionation, fluorescence excitation–emission matrix (EEM) spectroscopy, fourier transform infrared spectroscopy (FTIR), contact angle and a scanning electron microscope (SEM) were employed to identify the potential foulants. The results showed that humic acid and fulvic acid of small size were likely to permeate the membrane, while the hydrophobic fraction of humic and fulvic acid and aromatic proteins tended to be rejected and retained. Organic compounds such as proteins, humic substances, and polysaccharide-like materials, were all detected in the fouling layer. The physically irreversible fouling of the PS membrane seemed to be mainly attributed to the hydrophobic fraction of humic substances.

Download Full-text

Modification of poly(vinylidene fluoride) ultrafiltration membranes with poly(vinyl alcohol) for fouling control in drinking water treatment

Water Research ◽

10.1016/j.watres.2009.08.008 ◽

2009 ◽

Vol 43 (18) ◽

pp. 4559-4568 ◽

Cited By ~ 151

Author(s):

Jennifer R. Du ◽

Sigrid Peldszus ◽

Peter M. Huck ◽

Xianshe Feng

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Vinyl Alcohol ◽

Vinylidene Fluoride ◽

Drinking Water Treatment ◽

Poly Vinyl Alcohol ◽

Ultrafiltration Membranes ◽

Fouling Control ◽

Poly Vinylidene Fluoride

Download Full-text

Direct drinking water treatment by spiral-wound ultrafiltration membranes

Desalination ◽

10.1016/j.desal.2007.11.014 ◽

2008 ◽

Vol 230 (1-3) ◽

pp. 41-50 ◽

Cited By ~ 17

Author(s):

J.C. Mierzwa ◽

I. Hespanhol ◽

M.C.C. da Silva ◽

L.D.B. Rodrigues ◽

C.F. Giorgi

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Drinking Water Treatment ◽

Ultrafiltration Membranes ◽

Spiral Wound

Download Full-text

A comparison of organic matters responsible for immersed ultrafiltration membranes fouling in drinking water treatment

Asia-Pacific Journal of Chemical Engineering ◽

10.1002/apj.1665 ◽

2012 ◽

Vol 8 (3) ◽

pp. 339-345 ◽

Cited By ~ 1

Author(s):

Lu Qi ◽

Hong-chen Wang ◽

Xiang Zheng ◽

Guang-ming Zhang ◽

Guang-hui Yu ◽

...

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Drinking Water Treatment ◽

Ultrafiltration Membranes ◽

Organic Matters

Download Full-text

Treatment of spent filter backwash water from drinking water treatment with immersed ultrafiltration membranes

Desalination and Water Treatment ◽

10.1080/19443994.2013.774142 ◽

2013 ◽

Vol 51 (25-27) ◽

pp. 4901-4906 ◽

Cited By ~ 2

Author(s):

Josip Ćurko ◽

Ivan Mijatović ◽

Dean Rumora ◽

Vlado Crnek ◽

Marin Matošić ◽

...

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Drinking Water Treatment ◽

Ultrafiltration Membranes ◽

Filter Backwash Water

Download Full-text

Behaviour of bisphenol A (BPA), 4-nonylphenol (4-NP) and 4-nonylphenol ethoxylates (4-NP1EO, 4-NP2EO) in oxidative water treatment processes

Water Science & Technology ◽

10.2166/wst.2004.0321 ◽

2004 ◽

Vol 50 (5) ◽

pp. 141-147 ◽

Cited By ~ 34

Author(s):

K. Lenz ◽

V. Beck ◽

M. Fuerhacker

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Bisphenol A ◽

Estrogenic Activity ◽

Detection Limits ◽

Drinking Water Treatment ◽

Treatment Processes ◽

Estrogenic Potential ◽

Removal Efficiencies ◽

Study Laboratory

Endocrine disrupting chemicals (EDCs) such as natural and synthetic hormones or industrial chemicals can adversely affect the endocrine system at very low concentrations. As such substances can be present in raw water used for drinking-water production, they potentially pose a health risk to humans. In this study laboratory tests were performed to determine removal efficiencies of selected oxidative drinking water treatment processes, namely ozonation (1.4 mg/l O3) and chlorination, using sodium hypochlorite (0.5 mg/l NaClO) and chlorine dioxide (0.4-0.6 mg/l ClO2) under conditions applied in technical plants. 500-300,000 ng/l of bisphenol A (BPA), 4-nonylphenol (4-NP) and 4-nonylphenol-n-ethoxylates (NPnEO) were selected for investigations and measured by HPLC/FLD and HPLC/MS. To investigate possible oxidation by-products, adsorbable organic halogens (AOX) were determined and estrogenic activities were assessed with the help of an estrogen receptor binding assay (YES). Ozonation and chlorination with ClO2 removed both 4-NP and BPA below detection limits, corresponding with AOX and estrogenic activity. Concerning NPnEO ozonation removed NP1EO and NP2EO up to 28% and 30%, respectively, whereas ClO2 showed high removal efficiencies, eliminating >94% and 92%, respectively. NaClO removed 4-NP and BPA below detection limits, but estrogenic activities increased and AOX could be measured. NP1EO and NP2EO were only marginally reduced corresponding to the slight decrease of estrogenic potential.

Download Full-text

Fouling behavior of polyethersulfone ultrafiltration membranes functionalized with sol–gel formed ZnO nanoparticles

RSC Advances ◽

10.1039/c5ra05783c ◽

2015 ◽

Vol 5 (63) ◽

pp. 50711-50719 ◽

Cited By ~ 31

Author(s):

Xin Li ◽

Jiansheng Li ◽

Bart Van der Bruggen ◽

Xiuyun Sun ◽

Jinyou Shen ◽

...

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Zno Nanoparticles ◽

Potential Application ◽

Sol Gel ◽

Wastewater Reuse ◽

Drinking Water Treatment ◽

Ultrafiltration Membranes ◽

Pes Membrane

The addition of sol–gel formed ZnO nanoparticles endows the PES membrane with an improved antifouling performance, which expands the potential application of UF membrane in drinking water treatment and wastewater reuse.

Download Full-text