Reuse of carwash water with a cellulose acetate ultrafiltration membrane aided by flocculation and activated carbon treatments

Desalination ◽  
2004 ◽  
Vol 169 (3) ◽  
pp. 257-267 ◽  
Author(s):  
T HAMADA ◽  
Y MIYAZAKI
Keyword(s):  
Activated Carbon ◽  
Cellulose Acetate ◽  
Ultrafiltration Membrane

Distribution and Transformation of Molecular Weight of Organic Matters in a Canal Water Treatment Procedure

2012 ◽  
Vol 610-613 ◽  
pp. 2483-2487
Author(s):  
Xiao Dan Zhao ◽  
Chun Hua Wu ◽  
Zhen Zhou
Keyword(s):  
Molecular Weight ◽  
Activated Carbon ◽  
Water Treatment ◽  
Removal Rate ◽  
Ultrafiltration Membrane ◽  
Raw Water ◽  
Canal Water ◽  
Treatment Procedure ◽  
Organic Matters ◽  
Membrane Method

Distribution and transformation of molecular weight of organic matters in canal raw water, primary coagulated water, secondary coagulated water, enhanced coagulated water and water filtered by activated carbon were monitored by ultrafiltration membrane method. The results show that organics on the fraction of molecular weight less than 2kDa has the largest ratio in total organics of outlets of coagulation and activated carbon tank. Removal rate of total organics is about 73% by secondary coagulation, but which of micromolecule organics of molecular weight less than 2kDa is only 10%, which can be removed by activated carbon more than 80%.

Natural organic matter fouling using a cellulose acetate copolymer ultrafiltration membrane

2009 ◽  
Vol 1 (1-3) ◽  
pp. 150-156 ◽  
Author(s):  
Cesar García ◽  
Eduardo Rogel-Hernández ◽  
Shui Wai Lin ◽  
Heriberto Espinoza-Gómez
Keyword(s):  
Organic Matter ◽  
Cellulose Acetate ◽  
Natural Organic Matter ◽  
Ultrafiltration Membrane ◽  
Acetate Copolymer

scholarly journals Composition Studies on Tobacco XXXIII Changes in Smoke Composition and Filtration by Artificial Alteration of Smoke pH: Pyridine and Nicotine

1969 ◽  
Vol 5 (1) ◽  
pp. 13-17
Author(s):  
R. L. Stedman ◽  
L. Lakritz ◽  
E. D. Strange
Keyword(s):  
Activated Carbon ◽  
Formic Acid ◽  
Cellulose Acetate ◽  
Composition Studies ◽  
Wide Range ◽  
Highly Effective ◽  
Kinetics Of ◽  
Basic Strength

AbstractUsing selected additives, the pH of smoke from U.S. commercial cigarettes (5.6) can be altered over a wide range (4.1-8.2). The volatility of the additive is of greater importance in changing smoke pH than the acidic or basic strength of the additive. The activated carbon in multiple carbon-cellulose acetate filters is highly effective in removing pyridine selectively from the smoke of blended commercial cigarettes. The degree of this selectivity is markedly reduced on lowering the smoke pH to 4.1 by adding formic acid to cigarettes. On raising the pH of smoke to 8.2 by adding dipropylamine to cigarettes, the selectivity for pyridine is less than in smoke of unaltered pH and more than in smoke of pH 4.1. Some selectivity of nicotine removal is observed in the alkaline smoke using cellulose acetate filters with or without carbon. The use of formic acid to depress pH appears to alter the kinetics of nicotine pyrolysis, resulting in a changed nicotine : pyridine ratio.

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