Surface modification of Carbon-Based Nanoadsorbents for the Advanced Wastewater Treatment

2021 ◽  
pp. 130148
Author(s):  
Ayesha Gul ◽  
Nader Ghaffari Khaligh ◽  
Nurhidayatullaili Muhd Julkapli
Keyword(s):  
Wastewater Treatment ◽  
Surface Modification ◽  
Advanced Wastewater Treatment ◽  
Carbon Based

Applications of Carbon‐Based Nanomaterials for Wastewater Treatment

2021 ◽  
pp. 87-133
Author(s):  
Ramesh K. Guduru ◽  
Anurag A. Gupta ◽  
Parwathi Pillai ◽  
Swapnil Dharaskar
Keyword(s):  
Wastewater Treatment ◽  
Carbon Based Nanomaterials ◽  
Carbon Based

scholarly journals Continuous transformation of chiral pharmaceuticals in enzymatic membrane bioreactors for advanced wastewater treatment

2017 ◽  
Vol 76 (7) ◽  
pp. 1816-1826 ◽  
Author(s):  
Luong N. Nguyen ◽  
Faisal I. Hai ◽  
James A. McDonald ◽  
Stuart J. Khan ◽  
William E. Price ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Redox Mediator ◽  
Membrane Bioreactors ◽  
Continuous Transformation ◽  
Chiral Inversion ◽  
Enantiomeric Analysis ◽  
Chiral Pharmaceuticals ◽  
Advanced Wastewater Treatment ◽  
Enzymatic Membrane

This study demonstrates continuous enantiomeric inversion and further biotransformation of chiral profens including ibuprofen, naproxen and ketoprofen by an enzymatic membrane bioreactor (EMBR) dosed with laccase. The EMBR showed non-enantioselective transformations, with high and consistent transformation of both (R)- and (S)-ibuprofen (93 ± 6%, n= 10), but lower removals of both enantiomers of naproxen (46 ± 16%, n= 10) and ketoprofen (48 ± 17%, n= 10). Enantiomeric analysis revealed a bidirectional but uneven inversion of the profens, for example 14% inversion of (R)- to (S)- compared to 4% from (S)- to (R)-naproxen. With redox-mediator addition, the enzymatic chiral inversion of both (R)- and (S)-profens remained unchanged, although the overall conversion became enantioselective; except for (S)-naproxen, the addition of redox mediator promoted the degradation of (R)-profens only.

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