Low content nano-polyrhodanine modified polysulfone membranes with superior properties and their performance for wastewater treatment

2017 ◽  
Vol 4 (10) ◽  
pp. 2043-2054 ◽  
Author(s):  
Sadegh Aghapour Aktij ◽  
Ahmad Rahimpour ◽  
Alberto Figoli
Keyword(s):  
Wastewater Treatment ◽  
Ultrafiltration Membranes ◽  
Membrane Performance ◽  
Polysulfone Membranes

In this study, PSf ultrafiltration membranes were modified with a low content of polyrhodanine (PRh) nanoparticles to improve the membrane performance for wastewater treatment.

Effect of the membrane potential on the performance of ultrafiltration membranes

1986 ◽  
Vol 51 (3) ◽  
pp. 539-544 ◽  
Author(s):  
Hans-Hartmut Schwarz ◽  
Vlastimil Kůdela ◽  
Jaromír Lukáš ◽  
Jiří Vacík ◽  
Volker Gröbe
Keyword(s):  
Membrane Potential ◽  
Concentration Polarization ◽  
Ultrafiltration Membranes ◽  
Membrane Cleaning ◽  
Gel Layer ◽  
Charged Membrane ◽  
Protein Molecules ◽  
Polysulfone Membranes ◽  
Pressure Driven

In the pressure driven process the performance of membranes for ultrafiltration can be changed by incorporating charged groups into the membranes. sulfonation of polysulfone membranes the membrane potential is varied. On interaction of the negatively charged membrane with positively or negatively charged protein molecules the formation of a concentration polarization gel layer proceeds at different rate. Thus, the performance of the membrane can be controlled by the membrane potential. The dependence of the performance on the potential is discussed and procedures for membrane cleaning are suggested.

scholarly journals Gravity-Driven Membrane Reactor for Decentralized Wastewater Treatment: Effect of Reactor Configuration and Cleaning Protocol

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 388
Author(s):  
Ihtisham Ul Haq Shami ◽  
Bing Wu
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Economic Feasibility ◽  
Reactor Configuration ◽  
Membrane Performance ◽  
Decentralized Wastewater Treatment ◽  
Water Head ◽  
Cake Layer ◽  
Gravity Driven ◽  
Cleaning Protocol

In this study, three gravity-driven membrane (GDM) reactors with flat sheet membrane modules and various biocarriers (synthetic fibers, lava stones, and sands) were operated for municipal wastewater treatment. The effects of water head, periodically cleaning protocol, and operation temperature on the GDM reactor performance were illustrated in terms of membrane performance and water quality. The results indicated that: (1) the cake layer fouling was predominant (>~85%), regardless of reactor configuration and operation conditions; (2) under lower water head, variable water head benefited in achieving higher permeate fluxes due to effective relaxation of the compacted cake layers; (3) the short-term chemical cleaning (30–60 min per 3–4 days) improved membrane performance, especially when additional physical shear force was implemented; (4) the lower temperature had negligible effect on the GDM reactors packed with Icelandic lava stones and sands. Furthermore, the wastewater treatment costs of the three GDM reactors were estimated, ranging between 0.31 and 0.37 EUR/m3, which was greatly lower than that of conventional membrane bioreactors under lower population scenarios. This sheds light on the technical and economic feasibility of biocarrier-facilitated GDM systems for decentralized wastewater treatment in Iceland.

Polysulfone membranes I. performance comparison of commercially available ultrafiltration membranes

Desalination ◽  
1992 ◽  
Vol 86 (1) ◽  
pp. 27-41 ◽  
Author(s):  
T.A. Tweddle ◽  
C. Striez ◽  
C.M. Tam ◽  
J.D. Hazlett
Keyword(s):  
Performance Comparison ◽  
Ultrafiltration Membranes ◽  
Polysulfone Membranes

Carwash wastewater treatment by micro and ultrafiltration membranes: Effects of geometry, pore size, pressure difference and feed flow rate in transport properties

2017 ◽  
Vol 17 ◽  
pp. 143-148 ◽  
Author(s):  
Alinne Clície Salgueiro Pinto ◽  
Luiza de Barros Grossi ◽  
Rafael Alvarenga Carvalho de Melo ◽  
Thalles Macedo de Assis ◽  
Vanessa Mendes Ribeiro ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Pore Size ◽  
Transport Properties ◽  
Flow Rate ◽  
Pressure Difference ◽  
Feed Flow Rate ◽  
Ultrafiltration Membranes

The use of Dean vortices in coiled hollow-fibre ultrafiltration membranes for water and wastewater treatment

Desalination ◽  
1998 ◽  
Vol 118 (1-3) ◽  
pp. 73-79 ◽  
Author(s):  
C. Guigui ◽  
P. Manno ◽  
P. Moulin ◽  
M.J. Clifton ◽  
J.C. Rouch ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Hollow Fibre ◽  
Ultrafiltration Membranes ◽  
Water And Wastewater Treatment ◽  
Dean Vortices ◽  
Water And Wastewater
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