Electrically enhanced separation processes: the basis of in situ intermittent electrolytic membrane cleaning (IIEMC) and in situ electrolytic membrane restoration (IEMR)

1989 ◽  
Vol 40 (2) ◽  
pp. 219-229 ◽  
Author(s):  
W.Richard Bowen ◽  
Richard S. Kingdon ◽  
Hoze A.M. Sabuni
Keyword(s):  
Separation Processes ◽  
Membrane Cleaning ◽  
Electrically Enhanced

Biofilms: their structure, activity, and effect on membrane filtration

2005 ◽  
Vol 51 (6-7) ◽  
pp. 181-192 ◽  
Author(s):  
Z. Lewandowski ◽  
H. Beyenal
Keyword(s):  
Membrane Filtration ◽  
Membrane Separation ◽  
Separation Processes ◽  
Membrane Cleaning ◽  
Underlying Assumption ◽  
Structure Activity ◽  
Membrane Biofouling ◽  
Flux Decline ◽  
Cleaning Procedures ◽  
Near Future

The goal of this presentation is to identify biofouling mechanisms that cause undesirable effects to the membrane separation processes of flux decline and pressure drop. The underlying assumption of this presentation is that biofouling is unavoidable and that the operator cannot eliminate it entirely. This premise justifies research efforts toward understanding the mechanisms by which biofouling affects the membrane processes, rather than expecting that technology can entirely eliminate membrane biofouling in the near future. An improved understanding of biofouling mechanisms may lead to better membrane design, better membrane modules, and better membrane cleaning procedures.

In-situ combined dual-layer CNT/PVDF membrane for electrically-enhanced fouling resistance

2015 ◽  
Vol 491 ◽  
pp. 37-44 ◽  
Author(s):  
Shu Wang ◽  
Shuai Liang ◽  
Peng Liang ◽  
Xiaoyuan Zhang ◽  
Jianyu Sun ◽  
...  
Keyword(s):  
Fouling Resistance ◽  
Pvdf Membrane ◽  
Electrically Enhanced

In situ observation of phase separation processes in gelling alkoxy-derived silica system by light scattering method

1994 ◽  
Vol 3 (3) ◽  
pp. 169-188 ◽  
Author(s):  
Hironori Kaji ◽  
Kazuki Nakanishi ◽  
Naohiro Soga ◽  
Tadashi Inoue ◽  
Norio Nemoto
Keyword(s):  
Phase Separation ◽  
Light Scattering ◽  
In Situ Observation ◽  
Scattering Method ◽  
Separation Processes

In-situ utilization of membrane foulants (FeOx+MnOx) for the efficient membrane cleaning

2021 ◽  
pp. 118004
Author(s):  
Boda Li ◽  
Jun Ma ◽  
Wei Qiu ◽  
Wenqian Li ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Membrane Cleaning

scholarly journals Highly Water-Dispersible Graphene Nanosheets From Electrochemical Exfoliation of Graphite

2021 ◽  
Vol 9 ◽  
Author(s):  
Si-Woo Park ◽  
Byungkwon Jang ◽  
Han Kim ◽  
Jimin Lee ◽  
Ji Young Park ◽  
...  
Keyword(s):  
Graphene Nanosheets ◽  
Aqueous Dispersion ◽  
Stability Index ◽  
Optical Transmittance ◽  
Low Oxygen ◽  
Electrochemical Exfoliation ◽  
Separation Processes ◽  
Water Dispersible ◽  
Ph Buffer

The electrochemical exfoliation of graphite has been considered to be an effective approach for the mass production of high-quality graphene due to its easy, simple, and eco-friendly synthetic features. However, water dispersion of graphene produced in the electrochemical exfoliation method has also been a challenging issue because of the hydrophobic properties of the resulting graphene. In this study, we report the electrochemical exfoliation method of producing water-dispersible graphene that importantly contains the relatively low oxygen content of <10% without any assistant dispersing agents. Through the mild in situ sulfate functionalization of graphite under alkaline electrochemical conditions using a pH buffer, the highly water-dispersible graphene could be produced without any additional separation processes of sedimentation and/or centrifugation. We found the resulting graphene sheets to have high crystalline basal planes, lateral sizes of several μm, and a thickness of <5 nm. Furthermore, the high aqueous dispersion stability of as-prepared graphene could be demonstrated using a multi-light scattering technique, showing very little change in the optical transmittance and the terbiscan stability index over time.

A novel in situ membrane cleaning method using periodic electrolysis

2014 ◽  
Vol 471 ◽  
pp. 149-154 ◽  
Author(s):  
Raed Hashaikeh ◽  
Boor Singh Lalia ◽  
Victor Kochkodan ◽  
Nidal Hilal
Keyword(s):  
Membrane Cleaning ◽  
Cleaning Method
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