Flexible electro-responsive in-situ polymer acid doped polyaniline membranes for permeation enhancement and membrane fouling removal

2019 ◽  
Vol 578 ◽  
pp. 263-272 ◽  
Author(s):  
Li Li Xu ◽  
Salman Shahid ◽  
Darrell Alec Patterson ◽  
Emma Anna Carolina Emanuelsson
Keyword(s):  
Membrane Fouling ◽  
Permeation Enhancement ◽  
Doped Polyaniline

In situ 3D characterization of membrane fouling by yeast suspensions using two-photon femtosecond near infrared non-linear optical imaging

2006 ◽  
Vol 280 (1-2) ◽  
pp. 124-133 ◽  
Author(s):  
David Hughes ◽  
Uday K. Tirlapur ◽  
Robert Field ◽  
Zhanfeng Cui
Keyword(s):  
Optical Imaging ◽  
Membrane Fouling ◽  
Near Infrared ◽  
Two Photon ◽  
Non Linear ◽  
Linear Optical

In situ Raman study of sulfonate-doped polyaniline

1999 ◽  
Vol 44 (12) ◽  
pp. 1989-1997 ◽  
Author(s):  
Marie-Claude Bernard ◽  
Susana Cordoba de Torresi ◽  
Anne Hugot-Le Goff
Keyword(s):  
In Situ Raman ◽  
Raman Study ◽  
Doped Polyaniline

In-situ ultrasound-assisted control of polymeric membrane fouling

Ultrasonics ◽  
2020 ◽  
Vol 108 ◽  
pp. 106206
Author(s):  
Heloisa W.D. Camara ◽  
Huu Doan ◽  
Ali Lohi
Keyword(s):  
Membrane Fouling ◽  
Polymeric Membrane ◽  
Ultrasound Assisted

scholarly journals Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 545 ◽  
Author(s):  
Rathmalgodage Thejani Nilusha ◽  
Tuo Wang ◽  
Hongyan Wang ◽  
Dawei Yu ◽  
Junya Zhang ◽  
...  
Keyword(s):  
Membrane Fouling ◽  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
Ceramic Membrane ◽  
Pure Water ◽  
Ex Situ ◽  
Stable Operation ◽  
Chemical Cleaning ◽  
Cake Layer

The cost-effective and stable operation of an anaerobic ceramic membrane bioreactor (AnCMBR) depends on operational strategies to minimize membrane fouling. A novel strategy for backwashing, filtration and relaxation was optimized for stable operation of a side stream tubular AnCMBR treating domestic wastewater at the ambient temperature. Two in situ backwashing schemes (once a day at 60 s/day, and twice a day at 60 s × 2/day) maintaining 55 min filtration and 5 min relaxation as a constant were compared. A flux level over 70% of the initial membrane flux was stabilized by in situ permeate backwashing irrespective of its frequency. The in situ backwashing by permeate once a day was better for energy saving, stable membrane filtration and less permeate consumption. Ex situ chemical cleaning after 60 days’ operation was carried out using pure water, sodium hypochlorite (NaOCl), and citric acid as the order. The dominant cake layer was effectively reduced by in situ backwashing, and the major organic foulants were fulvic acid-like substances and humic acid-like substances. Proteobacteria, Firmucutes, Epsilonbacteria and Bacteroides were the major microbes attached to the ceramic membrane fouling layer which were effectively removed by NaOCl.

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