Thermodynamic prediction and experimental investigation of short-term dynamic membrane formation in dynamic membrane bioreactors: Effects of sludge properties

2019 ◽  
Vol 77 ◽  
pp. 85-96 ◽  
Author(s):  
Zhenzhen Yu ◽  
Yisong Hu ◽  
Mawuli Dzakpasu ◽  
Xiaochang C. Wang
Keyword(s):  
Experimental Investigation ◽  
Membrane Bioreactors ◽  
Short Term ◽  
Dynamic Membrane ◽  
Membrane Formation ◽  
Thermodynamic Prediction ◽  
Sludge Properties

scholarly journals Experimental investigation of the short-term creep recovery of hardened cement paste at micrometre length scale

2021 ◽  
Vol 149 ◽  
pp. 106562
Author(s):  
Yidong Gan ◽  
Matthieu Vandamme ◽  
Yu Chen ◽  
Erik Schlangen ◽  
Klaas van Breugel ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Cement Paste ◽  
Creep Recovery ◽  
Hardened Cement ◽  
Length Scale ◽  
Hardened Cement Paste ◽  
Short Term ◽  
Term Creep ◽  
Short Term Creep

Effect of activated sludge properties and membrane operation conditions on fouling characteristics in membrane bioreactors

Chemosphere ◽  
2006 ◽  
Vol 63 (10) ◽  
pp. 1699-1708 ◽  
Author(s):  
Hyeok Choi ◽  
Kai Zhang ◽  
Dionysios D. Dionysiou ◽  
Daniel B. Oerther ◽  
George A. Sorial
Keyword(s):  
Activated Sludge ◽  
Membrane Bioreactors ◽  
Operation Conditions ◽  
Sludge Properties ◽  
Fouling Characteristics

The importance of measuring the sludge filterability at an MBR – introduction of a new method

2012 ◽  
Vol 66 (1) ◽  
pp. 9-14 ◽  
Author(s):  
C. Thiemig
Keyword(s):  
Membrane Fouling ◽  
Reliable Method ◽  
Membrane Bioreactors ◽  
New Method ◽  
Strong Impact ◽  
Laboratory Equipment ◽  
Filtration Performance ◽  
Sludge Properties ◽  
Operational Aspects ◽  
General Method

Sludge properties have a strong impact on the operational aspects of membrane bioreactors (MBRs). Poor sludge properties cause stronger membrane fouling and reduce the filtration performance of MBRs. Up to now there is no general method used to measure the fouling or filtration relevant sludge properties in MBRs. The aim of this work was to develop a simple but reliable method to supply operators a tool to monitor the important sludge properties for their application and to compare this method with existing techniques. Through extensive research a new method called the sludge filtration index (SFI) has been developed to indicate the appropriate sludge parameters for MBR systems in a cheap and easy manner. The SFI can be measured with simple laboratory equipment and offers operators a powerful tool to monitor the conditions of their sludge, independent of the membrane conditions.

scholarly journals Alpha-1 Antitrypsin and Monocytes

2015 ◽  
Vol 25 (2) ◽  
pp. 32-35
Author(s):  
Danielius Serapinas
Keyword(s):  
Experimental Investigation ◽  
Biological Activity ◽  
Proteinase Inhibitor ◽  
Serine Proteases ◽  
Serine Proteinase ◽  
Serine Proteinase Inhibitor ◽  
Short Term ◽  
Dual Effect ◽  
Soluble Cd14 ◽  
Alpha 1 Antitrypsin

Alpha-1 antitrypsin (AAT) is the main circulating serine proteinase inhibitor. A number of studies suggest that AAT can also exhibit biological activity independent of inhibition of serine proteases. The aim of the study was to make experimental investigation of AAT influence on monocytes stimulated by bacterial endotoxyn . AAT affects monocyte responses to LPS by regulating soluble CD14 release. Here we show that a short-term monocyte exposure to AAT leads to an increase of CD14 levels (p0.05). In parallel, a short-term cell exposure to AAT significantly enhances TNFα release. However, AAT was found to have a dual effect on LPS-induced TNFα release. Probably a rapid increase in AAT concentrations during various inflammatory and infectious conditions may enhance the magnitude of monocyte responses to endotoxin and subsequently accelerate resolution of the inflammatory reaction.

Identification of activated sludge properties affecting membrane fouling in submerged membrane bioreactors

2006 ◽  
Vol 51 (1) ◽  
pp. 95-103 ◽  
Author(s):  
Fangang Meng ◽  
Hanmin Zhang ◽  
Fenglin Yang ◽  
Shoutong Zhang ◽  
Yansong Li ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Membrane Fouling ◽  
Membrane Bioreactors ◽  
Sludge Properties

Biofouling control and sludge properties promotion through quorum quenching in membrane bioreactors at two aeration intensities

2018 ◽  
Vol 40 (7) ◽  
pp. 1067-1075 ◽  
Author(s):  
Jinhui Huang ◽  
Jianxin Zhou ◽  
Guangming Zeng ◽  
Yanling Gu ◽  
Yi Hu ◽  
...  
Keyword(s):  
Quorum Quenching ◽  
Membrane Bioreactors ◽  
Sludge Properties ◽  
Biofouling Control
Sign in / Sign up

Export Citation Format

Share Document