Development of Electric Rust Preventive Machining Method – Optimization of Water Recycle System

2012 ◽  
Vol 523-524 ◽  
pp. 973-978 ◽  
Author(s):  
Naohiro Nishikawa ◽  
Yoshinori Sato ◽  
Fumika Andou ◽  
Takekazu Sawa ◽  
Yoshihiro Hagihara ◽  
...  
Keyword(s):  
Water Flow ◽  
High Speed ◽  
Surface Active Agent ◽  
Health Hazard ◽  
Active Agent ◽  
Test Liquid ◽  
Water Recycle ◽  
Sludge Particle ◽  
Flow Quantity ◽  
Adjustment Test

In production site, machining fluid (cutting oil, grinding fluid) is used. It contains several chemicals that are oil, surface active agent, and extreme pressure agent, anti rust agent and so on. Waste fluid disposal which is incineration etc. is necessary and arise huge cost and environmental load. In addition, workers health hazard is concerned for several chemicals while machining. In this investigation, new water machining method system (electric rust preventive machining method system) that uses only water as machining fluid for solving of conventional machining fluid problems is developed. In particularly, this paper mentions optimization of used machining water recycle on purification rate and refined water flow quantity in developed water recycle system. Therefore, high speed adjustment test liquid equipment is developed for stable experimental condition for evaluation. Test liquid turbidity is random for sludge particle and simple filter decreases this fluctuation. However, water recycle system is aimed for constant refined output despite fluctuation of input dirty water, and it is achieved. The optimized refined water flow quantity is 13.3 L/min at 1.0 MPa from viewpoint of purification on iron, turbidity, colour, conductivity and flow rate and purification load for reverse osmosis membrane.

Development of Electric Rust Preventive Machining Method - Improvement of Electric Rust Preventive Chip Sedimentation System

2012 ◽  
Vol 523-524 ◽  
pp. 979-984 ◽  
Author(s):  
Naohiro Nishikawa ◽  
Yoshinori Sato ◽  
Fumika Andou ◽  
Takekazu Sawa ◽  
Yoshihiro Hagihara ◽  
...  
Keyword(s):  
Tap Water ◽  
Surface Active Agent ◽  
Health Hazard ◽  
Active Agent ◽  
Life Time ◽  
Water Tank ◽  
Machining Performance ◽  
Water Recycle ◽  
Long Time ◽  
Filter Unit

The machining (cutting, grinding etc.) is conducted in manufacturing. Machining fluid (cutting oil, grinding fluid) that consists of oil, surface active agent, and extreme pressure agent, anti rust agent etc. is used. It improves machining performance, but it needs waste fluid disposal that is incineration or coagulative precipitation and so on. It causes huge cost and environmental load. Furthermore, it is afraid of workers health hazard for several chemicals while machining. Therefore, the electric rust preventive machining method system (water machining) is proposed and developed. This method uses only harmless water (tap water etc.) as machining fluid. In this paper, improvement of electric rust preventive chip sedimentation system that is part of water recycle system which is used for machining water purification and re-use. On long time (3 days) preservation of iron chip in water, decreasing of rust and turbidity is examined. Improved electric rust preventive chip sedimentation system is equipped simple circulation filter unit newly and its effectiveness is clarified. When many quantity of iron powder (3kg) likened to actual sludge is sunken in sedimentation water tank, if electric rust prevention and simple circulation filter activated, turbidity and colour would be decreased greatly. Therefore, it is expected that purification load of next part of filters is decreased and life-time of filter and system will be prolonged.

Physicochemical properties of PM-factor, a surface-active agent produced by Pseudomonas marginalis

1996 ◽  
Vol 42 (3) ◽  
pp. 243-251 ◽  
Author(s):  
G. Burd ◽  
O. P. Ward
Keyword(s):  
High Speed ◽  
Surface Active Agent ◽  
Gel Filtration ◽  
Active Agent ◽  
Aromatic Amino Acids ◽  
Polymyxin B ◽  
Culture Broth ◽  
Ultraviolet Absorption Spectrum ◽  
Emulsifying Activity ◽  
Surface Active

An extracellular surface-active agent, PM-factor, was obtained by high-speed centrifugation from the culture broth of Pseudomonas marginalis PD-14B. PM-factor exhibited emulsifying activity on a broad spectrum of hydrocarbon liquids, including aromatics, aliphatics, crude oil, and creosote. The factor appeared as ball-shaped particles of varying diameter when examined by electron microscopy (0.16–1.4 μm). Gel filtration chromatography demonstrated a high molecular mass of the factor (> 106 Da). The ultraviolet absorption spectrum manifested a peak in the region 200 nm rather in the region 260–280 nm. Amino acid analysis showed a very low amount of aromatic amino acids residues in the protein moiety of PM-factor. The presence of 3-deoxy-D-mannooctulosonic acid, heptose, hexosamine, phosphorus, and 3-hydroxy fatty acid indicated that PM-factor contained lipopolysaccharide. The emulsifying activity of PM-factor was inhibited strongly by mercuric chloride and moderately by EDTA. Polymyxin B, Ca2+, and Mg2+ markedly stimulated the factors emulsifying activity. Roles of the bioemulsifier in the functioning of P. marginalis as a plant pathogen and in bioremediation are discussed.Key words: bioemulsifier, Pseudomonas marginalis, polycyclic aromatic hydrocarbons, plant pathogenesis, bioremediation.

Adjunctive Use of a Surface-Active Agent in Extracorporeal Circulation

Circulation ◽  
1966 ◽  
Vol 33 (4s1) ◽  
Author(s):  
YOSHIMASA MIYAUCHI ◽  
TAKAYUKI INOUE ◽  
BRUCE C. PATON
Keyword(s):  
Extracorporeal Circulation ◽  
Surface Active Agent ◽  
Active Agent ◽  
Surface Active

scholarly journals Mathematical description of water flow quantity for microhydroelectric station

2020 ◽  
Vol 614 ◽  
pp. 012032
Author(s):  
D Kodirov ◽  
O Tursunov ◽  
S Khushiev ◽  
O Bozarov ◽  
G Tashkhodjaeva ◽  
...  
Keyword(s):  
Water Flow ◽  
Mathematical Description ◽  
Flow Quantity

Experimental Characterization of a Modified Airlift Pump

2014 ◽  
Author(s):  
Afshin Goharzadeh ◽  
Keegan Fernandes
Keyword(s):  
Water Flow ◽  
Flow Rate ◽  
High Speed ◽  
Water Flow Rate ◽  
High Speed Photography ◽  
Two Phase ◽  
Inner Diameter ◽  
Airlift Pump ◽  
Flow Map ◽  
Churn Flow

This paper presents an experimental investigation on a modified airlift pump. Experiments were undertaken as a function of air-water flow rate for two submergence ratios (ε=0.58 and 0.74), and two different riser geometries (i) straight pipe with a constant inner diameter of 19 mm and (ii) enlarged pipe with a sudden expanded diameter of 19 to 32 mm. These transparent vertical pipes, of 1 m length, were submerged in a transparent rectangular tank (0.45×0.45×1.1 m3). The compressed air was injected into the vertical pipe to lift the water from the reservoir. The flow map regime is established for both configurations and compared with previous studies. The two phase air-water flow structure at the expansion region is experimentally characterized. Pipeline geometry is found to have a significant influence on the output water flow rate. Using high speed photography and electrical conductivity probes, new flow regimes, such as “slug to churn” and “annular to churn” flow, are observed and their influence on the output water flow rate and efficiency are discussed. These experimental results provide fundamental insights into the physics of modified airlift pump.

The Study of Specific Materials Used by the Copper Wiring CMP of GLSI

2013 ◽  
Vol 307 ◽  
pp. 368-371
Author(s):  
Yu Ling Liu ◽  
Juan Wang ◽  
Bao Hong Gao
Keyword(s):  
High Speed ◽  
Chelating Agents ◽  
Active Agent ◽  
Copper Ion ◽  
Copper Film ◽  
Steel Corrosion ◽  
New Material ◽  
Ph Buffer ◽  
Materials Used ◽  
Acidic Oxides

In this paper, the multi-hydroxyl polyamines researched by ourselves are used in the slurry of the copper wiring CMP of GLSI, which makes the slurry alkalization. It also has the using as a pH adjusting agent, complexion agent of copper ion, multi- metal chelating agents, aminating agent of acidic oxides, pH buffer, stainless steel corrosion inhibitor, the active agent and pro-oxidant. It improves the property of slurry and solves many different of acidity slurry. The alkalinity slurry contained the multi-hydroxyl polyamines is environmental, inexpensive and composition- simplified. Without the toxic BTA which is must be used in the international and has side effect, the slurry can achieve the high speed and high flat. In the same time the low pressure and the little abrasive can be realized, which provide the new material for the removal of TSV copper film.

Surface Active Agent Phenomena in Dust Abatement

1952 ◽  
Vol 44 (10) ◽  
pp. 2389-2393 ◽  
Author(s):  
P. L. Walker ◽  
E. E. Petersen ◽  
C. C. Wright
Keyword(s):  
Surface Active Agent ◽  
Active Agent ◽  
Surface Active
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