Recent advances in the recycling of homogeneous catalysts using membrane separation

2011 ◽  
Vol 13 (9) ◽  
pp. 2247 ◽  
Author(s):  
Michèle Janssen ◽  
Christian Müller ◽  
Dieter Vogt
Keyword(s):  
Membrane Separation ◽  
Homogeneous Catalysts ◽  
Recent Advances

ChemInform Abstract: Recent Advances in the Recycling of Homogeneous Catalysts Using Membrane Separation

ChemInform ◽  
2011 ◽  
Vol 42 (52) ◽  
pp. no-no ◽  
Author(s):  
Michele Janssen ◽  
Christian Mueller ◽  
Dieter Vogt
Keyword(s):  
Membrane Separation ◽  
Homogeneous Catalysts ◽  
Recent Advances

scholarly journals Contemporary Techniques for Remediating Endocrine-Disrupting Compounds in Various Water Sources: Advances in Treatment Methods and Their Limitations

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3229
Author(s):  
Kamil Kayode Katibi ◽  
Khairul Faezah Yunos ◽  
Hasfalina Che Man ◽  
Ahmad Zaharin Aris ◽  
Mohd Zuhair Mohd Nor ◽  
...  
Keyword(s):  
Membrane Separation ◽  
Endocrine Disrupting Compounds ◽  
Aquatic Life ◽  
Treatment Methods ◽  
Treatment Processes ◽  
Recent Advances ◽  
Endocrine Disrupting ◽  
Research Findings ◽  
Negative Impacts ◽  
Membrane Treatment

Over the years, the persistent occurrence of superfluous endocrine-disrupting compounds (EDCs) (sub µg L−1) in water has led to serious health disorders in human and aquatic lives, as well as undermined the water quality. At present, there are no generally accepted regulatory discharge limits for the EDCs to avert their possible negative impacts. Moreover, the conventional treatment processes have reportedly failed to remove the persistent EDC pollutants, and this has led researchers to develop alternative treatment methods. Comprehensive information on the recent advances in the existing novel treatment processes and their peculiar limitations is still lacking. In this regard, the various treatment methods for the removal of EDCs are critically studied and reported in this paper. Initially, the occurrences of the EDCs and their attributed effects on humans, aquatic life, and wildlife are systematically reviewed, as well as the applied treatments. The most noticeable advances in the treatment methods include adsorption, catalytic degradation, ozonation, membrane separation, and advanced oxidation processes (AOP), as well as hybrid processes. The recent advances in the treatment technologies available for the elimination of EDCs from various water resources alongside with their associated drawbacks are discussed critically. Besides, the application of hybrid adsorption–membrane treatment using several novel nano-precursors is carefully reviewed. The operating factors influencing the EDCs’ remediations via adsorption is also briefly examined. Interestingly, research findings have indicated that some of the contemporary techniques could achieve more than 99% EDCs removal.

scholarly journals Recent Advances in Molecularly Imprinted Membranes for Sample Treatment and Separation

Separations ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 69
Author(s):  
Sagrario Torres-Cartas ◽  
Mónica Catalá-Icardo ◽  
Susana Meseguer-Lloret ◽  
Ernesto F. Simó-Alfonso ◽  
José Manuel Herrero-Martínez
Keyword(s):  
Membrane Separation ◽  
Sample Treatment ◽  
Short Introduction ◽  
Separation Processes ◽  
Future Directions ◽  
Molecularly Imprinted ◽  
Extraction And Separation ◽  
Recent Advances ◽  
Key Aspects ◽  
Separation Field

This review describes the recent advances from the past five years concerning the development and applications of molecularly imprinted membranes (MIMs) in the field of sample treatment and separation processes. After a short introduction, where the importance of these materials is highlighted, a description of key aspects of membrane separation followed by the strategies of preparation of these materials is described. The review continues with several analytical applications of these MIMs for sample preparation as well as for separation purposes covering pharmaceutical, food, and environmental areas. Finally, a discussion focused on possible future directions of these materials in extraction and separation field is also given.

Recent advances on electroactive CNT-based membranes for environmental applications: The perfect match of electrochemistry and membrane separation

2020 ◽  
Vol 31 (10) ◽  
pp. 2539-2548 ◽  
Author(s):  
Yanbiao Liu ◽  
Fuqiang Liu ◽  
Ning Ding ◽  
Xuemei Hu ◽  
Chensi Shen ◽  
...  
Keyword(s):  
Membrane Separation ◽  
Perfect Match ◽  
Environmental Applications ◽  
Recent Advances

Recent Advances in High Dispersion Spectroscopy of Globular Cluster Stars

1988 ◽  
Vol 132 ◽  
pp. 525-530
Author(s):  
Raffaele G. Gratton
Keyword(s):  
Globular Cluster ◽  
Globular Clusters ◽  
High Dispersion ◽  
Photographic Material ◽  
Recent Advances ◽  
Metal Abundances ◽  
Ccd Detectors ◽  
Major Progress

The use CCD detectors has allowed a major progress in abundance derivations for globular cluster stars in the last years. Abundances deduced from high dispersion spectra now correlates well with other abundance indicators. I discuss some problems concerning the derivation of accurate metal abundances for globular clusters using high dispersion spectra from both the old photographic and the most recent CCD data. The discrepant low abundances found by Cohen (1980), from photographic material for M71 giants, are found to be due to the use of too high microturbulences.

Chelation-assisted transition metal-catalysed C–H chalcogenylations

2020 ◽  
Vol 7 (8) ◽  
pp. 1022-1060 ◽  
Author(s):  
Wenbo Ma ◽  
Nikolaos Kaplaneris ◽  
Xinyue Fang ◽  
Linghui Gu ◽  
Ruhuai Mei ◽  
...  
Keyword(s):  
Transition Metal ◽  
Recent Advances ◽  
Site Selectivity ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

This review summarizes recent advances in C–S and C–Se formations via transition metal-catalyzed C–H functionalization utilizing directing groups to control the site-selectivity.

Nucleosome dynamics

2006 ◽  
Vol 73 ◽  
pp. 109-119 ◽  
Author(s):  
Chris Stockdale ◽  
Michael Bruno ◽  
Helder Ferreira ◽  
Elisa Garcia-Wilson ◽  
Nicola Wiechens ◽  
...  
Keyword(s):  
High Resolution ◽  
Chromatin Structure ◽  
Current Knowledge ◽  
Dynamic Properties ◽  
Structure And Dynamics ◽  
Nucleosome Dynamics ◽  
Sharp Focus ◽  
Recent Advances ◽  
Insight Into ◽  
Chromatin Structure And Dynamics

In the 30 years since the discovery of the nucleosome, our picture of it has come into sharp focus. The recent high-resolution structures have provided a wealth of insight into the function of the nucleosome, but they are inherently static. Our current knowledge of how nucleosomes can be reconfigured dynamically is at a much earlier stage. Here, recent advances in the understanding of chromatin structure and dynamics are highlighted. The ways in which different modes of nucleosome reconfiguration are likely to influence each other are discussed, and some of the factors likely to regulate the dynamic properties of nucleosomes are considered.

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