Treatability Studies of Pharmaceutical Industry Waste Water Using Low Molecular Weight Crab Shell Chitosan

2016 ◽  
Vol 4 (1) ◽  
pp. 28-32 ◽  
Author(s):  
M. Geetha Devi ◽  
Mohammed Abdullah Nasser Al-Shukaili ◽  
Syed Murtuza Ali
Keyword(s):  
Waste Water ◽  
Molecular Weight ◽  
Pharmaceutical Industry ◽  
Low Molecular Weight ◽  
Crab Shell ◽  
Industry Waste

Treatment of textile mill effluent using low molecular weight crab shell chitosan

2014 ◽  
Vol 56 (6) ◽  
pp. 1458-1464 ◽  
Author(s):  
M. Geetha Devi ◽  
Rahma Salim Al-kindi ◽  
G. Chandrasekar ◽  
Murtuza Ali Syed ◽  
S. Feroz
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight ◽  
Crab Shell ◽  
Textile Mill

Base-free preparation of low molecular weight chitin from crab shell

2018 ◽  
Vol 190 ◽  
pp. 148-155 ◽  
Author(s):  
Jie Zhang ◽  
Mi Feng ◽  
Xingmei Lu ◽  
Chunyan Shi ◽  
Xiaoqian Li ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight ◽  
Crab Shell

Improved Sludge Dewatering by Dual Polymer Conditioning

1993 ◽  
Vol 28 (1) ◽  
pp. 53-57 ◽  
Author(s):  
P. R. Senthilnathan ◽  
Roger G. Sigler
Keyword(s):  
Molecular Weight ◽  
Pharmaceutical Industry ◽  
Activated Sludge ◽  
High Molecular Weight ◽  
Full Scale ◽  
Screening Methods ◽  
Low Molecular Weight ◽  
Sludge Dewatering ◽  
Sludge Cake ◽  
Solids Content

Dual polymer conditioning enhanced the dewatering characteristics of aerobically digested activated sludge from a pharmaceutical industry. The solids content of the dewatered sludge cake, from a belt filter, increased from 8-11% range to 11-14% range due to dual polymer conditioning. In addition, dual polymer conditioning improved the compressibility of the sludge cake, reduced blinding of the belt filter media, and enhanced solids capture by the belt filter. Initially, bench scale studies were conducted to screen suitable polymers for conditioning. From these studies, two polymers, namely, Calgon Catfloc 8964 (a low molecular weight, high cationic charge) and Calgon WT2476I (a high molecular weight, high cationic charge) were chosen for full scale experiments. This paper reports the details of the polymer screening methods, dual polymer conditioning procedures, and the results of the full scale trials.

In vitro and in vivo safety evaluation of low molecular weight chitosans prepared by hydrolyzing crab shell chitosans with bamboo shoots chitosanase

2014 ◽  
Vol 71 ◽  
pp. 10-16 ◽  
Author(s):  
Ya-Min Chang ◽  
Yu-Jing Lee ◽  
Junn-Wang Liao ◽  
Jyun-Kai Jhan ◽  
Chen-Tien Chang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Safety Evaluation ◽  
Low Molecular Weight ◽  
Crab Shell ◽  
Bamboo Shoots

A high-performance oil-free backing pump for electron microscopes

1978 ◽  
Vol 36 (1) ◽  
pp. 110-111
Author(s):  
G.K.W. Balkau ◽  
E. Bez ◽  
J.L. Farrant
Keyword(s):  
Molecular Weight ◽  
Electron Microscope ◽  
Hot Spots ◽  
High Performance ◽  
Carbonaceous Material ◽  
Contamination Rate ◽  
Low Molecular Weight ◽  
Principal Source ◽  
Rotary Pumps ◽  
Electron Microscopes

The earliest account of the contamination of electron microscope specimens by the deposition of carbonaceous material during electron irradiation was published in 1947 by Watson who was then working in Canada. It was soon established that this carbonaceous material is formed from organic vapours, and it is now recognized that the principal source is the oil-sealed rotary pumps which provide the backing vacuum. It has been shown that the organic vapours consist of low molecular weight fragments of oil molecules which have been degraded at hot spots produced by friction between the vanes and the surfaces on which they slide. As satisfactory oil-free pumps are unavailable, it is standard electron microscope practice to reduce the partial pressure of organic vapours in the microscope in the vicinity of the specimen by using liquid-nitrogen cooled anti-contamination devices. Traps of this type are sufficient to reduce the contamination rate to about 0.1 Å per min, which is tolerable for many investigations.

Low-molecular-weight heparin in the prevention and treatment of thromboembolic disorders

1998 ◽  
Vol 1 (5) ◽  
pp. 166-174 ◽  
Author(s):  
Evelyn R Hermes De Santis ◽  
Betsy S Laumeister ◽  
Vidhu Bansal ◽  
Vandana Kataria ◽  
Preeti Loomba ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight Heparin ◽  
Low Molecular Weight ◽  
Prevention And Treatment
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