Emulsion-Templated, Magnetic, Hydrophilic–Oleophobic Composites for Controlled Water Removal

Langmuir ◽  
2022 ◽  
Author(s):  
Xiaomin Li ◽  
Tao Zhang ◽  
Jintao Lu ◽  
Zhiguang Xu ◽  
Yan Zhao
Keyword(s):  
Water Removal

Cellulose Acetate Reverse Osmosis Membrane Structure

1972 ◽  
Vol 30 ◽  
pp. 528-529
Author(s):  
H. K. Plummer ◽  
E. Eichen ◽  
C. D. Melvin
Keyword(s):  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Membrane Structure ◽  
Freeze Drying ◽  
Dense Layer ◽  
Water Removal ◽  
Reverse Osmosis Membrane ◽  
Correct Interpretation ◽  
Electron Image ◽  
Scanning Electron

Much of the work reported in the literature on cellulose acetate reverse osmosis membranes has raised new and important questions with regard to the dense or “active” layer of these membranes. Several thickness values and structures have been attributed to the dense layer. To ensure the correct interpretation of the cellulose acetate structure thirteen different preparative techniques have been used in this investigation. These thirteen methods included various combinations of water substitution, freeze drying, freeze sectioning, fracturing, embedding, and microtomy techniques with both transmission and scanning electron microscope observations.It was observed that several factors can cause a distortion of the structure during sample preparation. The most obvious problem of water removal can cause swelling, shrinking, and folds. Improper removal of embedding materials, when used, can cause a loss of electron image contrast and, or structure which could hinder interpretation.

Changes of some sewage sludge parameters prepared with an ultrasonic field

1997 ◽  
Vol 36 (11) ◽  
pp. 101-106 ◽  
Author(s):  
January Bien ◽  
Lidia Wolny
Keyword(s):  
Sewage Sludge ◽  
Microscopic Analysis ◽  
Chemical Compounds ◽  
Ultrasonic Field ◽  
Water Removal ◽  
Vacuum Filter ◽  
Additional Criterion ◽  
New Methods ◽  
Sludge Conditioning

Studies of sewage sludge conditioning by ultrasonic field concentrate on determination of the increase of water removal effect, which depends on kind of sludge and chemical compounds used in the dewatering process. An attempt was made to find new methods of sludge preparation before dewatering. Tests presented here focused on digested and difficult dewatered sludge. The sludge was dewatered on a vacuum filter after conditioning with polyelectrolytes and the ultrasonic field. The microscopic analysis was an additional criterion to evaluate changes in the sludge structure after preparation. The polyelectrolyte dose of 3 mg/g d.m. sonicated within 15 sec. resulted in the 50% decrease of sludge volume. Results presented confirmed our previous experiences, concerning the relation between conglomerates of sludge and the effect of dewatering.

Comparison of water removal methods from cement paste at early age

2021 ◽  
Author(s):  
Lenka Scheinherrová ◽  
Vojtěch Pommer ◽  
Eva Vejmelková ◽  
Robert Černý
Keyword(s):  
Cement Paste ◽  
Early Age ◽  
Water Removal

Options for Transpiration Water Removal in a Crop Growth System Under Zero Gravity Conditions

1991 ◽  
Author(s):  
C. C. Blackwell ◽  
M. Kliss ◽  
B. Yendler ◽  
B. Borchers ◽  
Boris S. Yendler ◽  
...  
Keyword(s):  
Crop Growth ◽  
Water Removal ◽  
Zero Gravity ◽  
Growth System
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