نتایج جستجو برای: nanofiltration membrane biological reactor nf

تعداد نتایج: 898357  

Journal: :Journal of the science of food and agriculture 2010
Laurent Picot Rozenn Ravallec Martine Fouchereau-Péron Laurent Vandanjon Pascal Jaouen Maryse Chaplain-Derouiniot Fabienne Guérard Aurélie Chabeaud Yves Legal Oscar Martinez Alvarez Jean-Pascal Bergé Jean-Marie Piot Irineu Batista Carla Pires Gudjon Thorkelsson Charles Delannoy Greta Jakobsen Inez Johansson Patrick Bourseau

BACKGROUND Numerous studies have demonstrated that in vitro controlled enzymatic hydrolysis of fish and shellfish proteins leads to bioactive peptides. Ultrafiltration (UF) and/or nanofiltration (NF) can be used to refine hydrolysates and also to fractionate them in order to obtain a peptide population enriched in selected sizes. This study was designed to highlight the impact of controlled UF ...

2016
Chun-Hai Wei Christiane Hoppe-Jones Gary Amy TorOve Leiknes

The removal of 15 organic micro-pollutants (OMPs) in synthetic municipal wastewater was investigated in a laboratory-scale mesophilic anaerobic membrane bioreactor (AnMBR) using ultrafiltration and AnMBR followed by nanofiltration (NF), where powdered activated carbon (PAC) was added to enhance OMPs removal. No significant effects of OMPs spiking and NF connection on bulk organics removal and b...

2000
Isabel C. Escobar Seungkwan Hong Andrew A. Randall

The main objective of this study was to evaluate the effectiveness of reverse osmosis (RO) and nanofiltration (NF), under various solution chemistries, on bacterial regrowth potential as quantified by assimilable organic carbon (AOC) and biodegradable dissolved organic carbon (BDOC). The bench-scale experiments, using tap groundwater spiked with acetate as organic carbon, revealed that AOC remo...

2018
Yonggang Wang Xu Wang Mingwei Li Jing Dong Changhong Sun Guanyi Chen

This study focuses on the application of combining membrane bioreactor (MBR) treatment with reverse osmosis (RO) or nanofiltration (NF) membrane treatment for removal of pharmaceuticals and personal care products (PPCPs) in municipal wastewater. Twenty-seven PPCPs were measured in real influent with lowest average concentration being trimethoprim (7.12 ng/L) and the highest being caffeine (18.4...

2014
Ahmad Rahimpour Mohsen Jahanshahi Majid Peyravi

The treatment of the yeast industry wastewater was investigated by nanofiltration (NF) membrane process on a pilot scale. Two wastewaters were used as feed: (i) dilute wastewater with COD 2000 mg/L and (ii) concentrate wastewater with COD 8000 mg/L. The permeate flux, COD retention, color and electrical conductivity (EC) removal were evaluated in relation to trans-membrane pressure and long-ter...

Journal: :Environmental technology 2012
Yasmina Bennani Kresimir Kosutić Emil Drazević Mirela Rozeć

Wastewater from the wood and pulp industry is of environmental concern. It contains high concentrations of organic and inorganic matter. In this work a combined method of coagulation, adsorption and nanofiltration/reverse osmosis (NF/RO) was investigated in the purification of biologically treated wastewater from wood processing. Coagulation with 0.8 g dm(-3) AlCl3 x 6H2O and adsorption on 2.5 ...

2017
Amine Mnif Imen Bejaoui Meral Mouelhi Béchir Hamrouni

Nanofiltration and reverse osmosis are investigated as a possible alternative to the conventional methods of Cr(VI) removal from model water and industrial effluent. The influences of feed concentration, water recovery, pH, and the coexisting anions were studied. The results have shown that retention rates of hexavalent chromium can reach 99.7% using nanofiltration membrane (NF-HL) and vary fro...

Journal: :Water environment research : a research publication of the Water Environment Federation 2007
Arlindo Canigo Gomes Isolina Cabral Gonçalves Maria Norberta de Pinho John Jefferson Porter

The filtration characteristics of simulated dyeing effluents containing Acid Orange 7, sodium sulfate, and a pH buffer made of acetic acid and sodium acetate is described using a commercially available nanofiltration membrane. The original membrane filtration properties were characterized with deionized water to provide a baseline of membrane performance. At high volumetric concentration of the...

Journal: :Journal of Membrane Science 2023

Nanofiltration (NF) is seen as a promising advanced treatment technology to deal with the increasing concentration of micropollutants (MPs) in water sources globally. To further improve successful implementation NF, an increased understanding membrane transport mechanisms important. One key aspect among these concerns influence solution composition on overall filtration performance. Although se...

2011
José F. Fernández Bernd Jastorff Reinhold Störmann Stefan Stolte Jorg Thöming

A frontier to be conquered in the field of membrane technology is related to the very limited scientific base for the rational and task-specific design of membranes. This is especially true for nanofiltration membranes with properties that are based on several solute-membrane interaction mechanisms. "Thinking in terms of Structure-Activity-Relationships" (T-SAR) is a methodology which applies a...

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