Recycling of Electroplating Wastes without Formation of Galvanic Sludges

2018 ◽  
Vol 22 (12) ◽  
pp. 19-21
Author(s):  
А.А. Pashayan ◽  
D.А. Karmanov
Keyword(s):  
Heavy Metals ◽  
Chemical Processes ◽  
Economic Consequences ◽  
Sludge Formation ◽  
Steel Rolling ◽  
Rolling Mills ◽  
Galvanic Sludge ◽  
Complex Approach ◽  
Sludge Accumulation

The reasons and eco-economic consequences of galvanic sludge accumulation in environment have been considered. The economic futility of recycling of galvanic sludges has been shown. It has been established that recycling of chrome-containing wastes together with waste pickle liquors of steel-rolling mills enables to fully regenerate all components of the above wastes without sludge formation. The chemical processes for regenerative recycling of spent alkaline copper solutions of all kinds have been described. Deacidification of some acid electroplating wastes permits to extract oxides of nonferrous and heavy metals. Employment of the developed technologies in common will allow recycling all kinds of electroplating wastes and electrolytes without formation of sludges. Such a complex approach has some undisputable ecologic and economic advantages.

scholarly journals Characterization and evaluation of heavy metal tolerance of bacterial species from soil of waste area near Riyan steel rolling mills, Muzaffarnagar, India

2010 ◽  
Vol 2 (1) ◽  
pp. 88-92 ◽  
Author(s):  
Satyajeet Khare ◽  
Niaz Ahmed ◽  
Shailja Pant ◽  
Ram Das
Keyword(s):  
Heavy Metals ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Bacillus Subtilis ◽  
Bacterial Species ◽  
Waste Area ◽  
Great Resistance ◽  
Steel Rolling ◽  
Rolling Mills ◽  
And Staphylococcus Aureus

The present study observed a variety of microorganisms from the soil of the waste area near Riyan Steel Rolling Mills , Muzaffarnagar. Among the microorganisms, 10 isolates of Bacillus subtilis, Pseudomonas aeruginosa and Staphylococcus aureus showed great potential against detrimental heavy metals like Hg, Pb, Zn. Out of these 10 isolates, only 2 isolates of Bacillus subtilis (N1A2, N1P2), one isolates of P. aeruginosa N1A4 and one isolates of S. aureus A1N3 showed tremendous tolerance against various heavy metals. Bacillus subtilis N1A2 showed15x109 cfu/ml in 100μg/ml of HgCl2 whereas B. subtilis N1P2 showed 15x109 cfu/ml in 400μg/ml of zinc acetatate. Similarily Pseudomonas aeruginosa N1A4 showed 11x109 cfu/ml in 150μg/ml of lead acetate. Staphylococcus aureus A1N3 showed great resistance towards 450μg/ml of zinc sulphate and maintain their growth up to 7x109 cfu/ml. strains were identified as Bacillus subtilis, Pseudomonas aeruginosa and Staphylococcus aureus on the basis of their morphological, physiological and biochemical and compared with their standard MTCC strains.

Energy Based Control of Hydraulic Actuators in Steel Rolling Mills

2004 ◽  
Vol 37 (15) ◽  
pp. 29-34 ◽  
Author(s):  
Gemot Grabmair ◽  
Kurt Schlacher ◽  
Georg KeintzeP
Keyword(s):  
Steel Rolling ◽  
Rolling Mills ◽  
Hydraulic Actuators

Neural Network Control for Steel Rolling Mills

1995 ◽  
pp. 280-286 ◽  
Author(s):  
Thomas Martinetz ◽  
Peter Protzel ◽  
Otto Gramckow ◽  
Günter Sörgel
Keyword(s):  
Neural Network ◽  
Network Control ◽  
Neural Network Control ◽  
Steel Rolling ◽  
Rolling Mills

Design and control of digital DC drives in steel rolling mills

2016 ◽  
Author(s):  
Doppllapudi Rajesh ◽  
Donthamseeti Ravikumar ◽  
S. K. Bharadwaj ◽  
Betha Karthik Sri Vastav
Keyword(s):  
Steel Rolling ◽  
Rolling Mills ◽  
And Control

A genetic-based hybrid intelligent controller for looper tension in steel rolling mills

2007 ◽  
Vol 2 (3) ◽  
pp. 219 ◽  
Author(s):  
S. Thangavel ◽  
V. Palanisamy ◽  
K. Duraiswamy ◽  
S. Chenthur Pandian
Keyword(s):  
Steel Rolling ◽  
Rolling Mills ◽  
Intelligent Controller
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