Activated carbon impregnated polysulfone hollow fiber membrane for cell immobilization and cometabolic biotransformation of 4-chlorophenol in the presence of phenol

2006 ◽  
Vol 276 (1-2) ◽  
pp. 81-90 ◽  
Author(s):  
Y LI ◽  
K LOH
Keyword(s):  
Activated Carbon ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Cell Immobilization ◽  
Fiber Membrane

Reuse of carwash wastewater with hollow fiber membrane aided by enhanced coagulation and activated carbon treatments

2007 ◽  
Vol 56 (12) ◽  
pp. 111-118 ◽  
Author(s):  
Tang Li ◽  
Tan Xue-jun ◽  
Cui Fu-yi ◽  
Zhou Qi ◽  
Yin Jun
Keyword(s):  
Activated Carbon ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Permeation Flux ◽  
Fiber Membrane ◽  
Enhanced Coagulation ◽  
Reuse Water ◽  
Gel Layer ◽  
Membrane Flux ◽  
Adsorption Treatment

The particles from carwash wastewater were separated by a hollow fiber membrane aided by a enhanced coagulation and activated carbon. This study demonstrated that the addition of KMnO4 to coagulant (PAC) could enhance the efficiency of coagulation, which helped reduce clogging of the ultrafiltration membrane and activated carbon. The existence of LAS can loosen the gel layer on the membrane and improve the flux. Adsorption of particles such as organic matter and oil is the main reason causing membrane flux decrease. When carwash wastewater was pretreated, the permeation flux of membrane showed a higher value. LAS, odour and colour are removed by GAC adsorption treatment at last. The COD, BOD, LAS and oil of reuse water was 33.4 mg/L, 4.8 mg/L, 0.06 mg/L and 0.95 mg/L, respectively.

scholarly journals Effect of the cross linkers’ concentration on the immobilization of recombinant Escherichia coli cells on hollow fiber membrane for excretion of cyclodextrin glucanotransferase (CGTase)

2017 ◽  
Vol 19 ◽  
pp. 154
Author(s):  
R CheMan ◽  
RM Illias ◽  
SZ Sulaiman ◽  
SK Abdul Mudalip ◽  
S Md Shaarani ◽  
...  
Keyword(s):  
Recombinant Protein ◽  
Hollow Fiber ◽  
Chemical Engineering ◽  
Immobilized Cells ◽  
Hollow Fiber Membrane ◽  
Cell Immobilization ◽  
High Specific Activity ◽  
Cell Lysis ◽  
Cyclodextrin Glucanotransferase ◽  
Fiber Membrane

<p>The excretion of recombinant proteins into the culture medium is a preferred approach over cytoplasmic expression because of the high specific activity and ease of purification. However, cell lysis is one of a major problem during the excretion of recombinant protein due to the pressure build up in the periplasmic space through overproduction of the expressed recombinant protein. Cell immobilization is a promising solution for the improvement of protein excretion with reduction in cell lysis. In this study, the effect of cross linkers concentrations on the process of cell immobilization for the cyclodextringlucanotransferase (CGTase) excretion and cell viability were investigated. The hollow fiber membrane was treated using different concentrations (0.3, 0.67 and 1%) of cross linkers namely glutaraldehyde (GA), poly-L-lysine (PLL) and polyethylenimine (PEI). The optimum concentration of cross linkers was found to be 0.3% with the high excretion of CGTase. Interestingly, the immobilized cell on the non-treated hollow fiber membrane showed up to 15% increment of CGTase excretion with 55% reduction of cell lysis, as compared to the immobilized cells on the treated hollow fiber membrane. It could be concluded that, the low concentration of cross linkers exhibited the highest CGTase excretion. Moreover, the non-treated hollow fiber membrane is a promising approach for attachment of cells to the membrane without requiring treatment with any chemicals for the production of recombinant enzyme.</p><p>Chemical Engineering Research Bulletin 19(2017) 154-159</p>

Simulation of Oxygen Permeability of Dual-phase Hollow Fiber Membrane

2012 ◽  
Vol 27 (9) ◽  
pp. 951-955
Author(s):  
Chun-Li YANG ◽  
Qi-Ming XU ◽  
Ming GONG ◽  
Wei LIU
Keyword(s):  
Hollow Fiber ◽  
Oxygen Permeability ◽  
Hollow Fiber Membrane ◽  
Dual Phase ◽  
Fiber Membrane
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