Download or read book Determination of Wastewater Acids from Chromium Plating and Electropolishing Solutions written by and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to provide calibration data for the online UV-visible, conductivity, and pH detectors associated with the environmental thrust project, which is part of the Benet Laboratories vessel plating program. The chemical literature provides offline laboratory detection of chromic acid from chromium plating wastewater solutions, as well as phosphoric and sulfuric acids from electropolishing wastewater solutions. The chemical literature lacks online detection and calibration data for these wastewater acids and this is essential for the reclamation of these three acids. Not only are these chemical resources wasted if they are not reclaimed, but the U.S. Army pays increasingly more to dispose of these hazardous materials. Specific methods are illustrated here that do provide online detection and calibration of these chromium plating and electropolishing wastewater acids. These methods consist of online UV-visible, conductivity, and pH detection. These data and their associated precisions are sufficient to adequately calibrate these three detectors associated with the environmental thrust project.
Download or read book Utilization of Ion Chromatography and Statistics to Determine Important Acids in Chromium Plating and Electropolishing Solutions written by and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inadequate monitoring of sulfuric and chromic acids in chromium plating solutions and phosphoric and sulfluric acids in electropolishing solutions can cause serious problems for the chromium plating industry, such as poor quality products, wasted human resources, and wasted electrical energy. Current instrumental analysis methods, both offline and online, for these acids either do not result in acceptable precisions or are time consuming. Two similar methods, which are improvements on existing ion chromatographical methods, are presented here that provides acceptable analysis and monitoring of these acids in this chromium plating process.
Download or read book Online Automatic Titration of Chromic Acid in Chromium Plating Solutions and Phosphoric and Sulfuric Acids in Electropolishing Solutions written by and published by . This book was released on 1991 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two increasingly important issues for the metal finishing industry are product quality and productivity. This industry is constantly looking for better online methods to monitor key chemical components in its metal finishing solutions. The analytical chemistry literature lacks an adequate online automatic titration method for the monitoring of chromic acid in chromium plating solutions and the monitoring of phosphoric and sulfuric acids in electropolishing solutions. Online automatic titration methods for each of these applications are given here based on previous manual titration methods. The identical experiment was conducted at two different companies who sell this type of instrument and included calibration, standardization and analysis. Although this work has a specific objective related to chromium plating and electropolishing solutions, the general method is applicable to most other types of metal finishing solution titrations. The optimum operating range of chromic acid in these chromium plating solutions is 240- 260 g/l while the optimum respective operating ranges of phosphoric and sulfuric acids are 640-730 g/l and 795 - 895 g/l. The resulting online automatic titration precisions for each application equal the present manual titration precisions from which these methods were derived.
Download or read book Laboratory Automatic Titration of Chromium Plating and Electropolishing Solutions written by and published by . This book was released on 2001 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two increasingly important issues for the metal finishing industry are product quality and productivity. This industry is constantly looking for better methods to monitor key chemical components in its metal finishing solutions. The analytical chemistry literature lacks an adequate automatic titration method for the monitoring of chromic acid in chromium plating solutions and the monitoring of phosphoric and sulfuric acids in electropolishing solutions. Automatic titration methods for each of these applications are given here based on previous manual titration methods. The identical experiment was conducted at three different companies who sell this type of instrument and included calibration, standardization and analysis. Although this work has a specific objective related to chromium plating and electropolishing solutions, the general method is applicable to most other types of metal finishing solution titrations. The optimum operating range of chromic acid in these chromium plating solutions is 240-260 g/l while the optimum respective operating ranges of phosphoric and sulfuric acids are 640-730 g/l and 795 - 895 g/l. The resulting automatic titration precisions for each application equal the present manual titration precisions from which these methods were derived.
Download or read book Chromium Plating and Electropolishing Solution Analyses by Online X Ray Fluorescence Spectroscopy written by and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two increasingly important issues for the chemical processing industry are product quality and productivity. Traditionally, offline chemical analysis has been used to monitor both. The main disadvantage of offline analysis is the loss of time due to sampling, bringing samples to a lab, and waiting for results. Obvious efficiencies can be realized by continuous online chemical monitoring. The initial investment is high, but the return on investment can be very efficient process performance. X-ray fluorescence spectroscopy (online and offline) is investigated and evaluated as a means to quantitatively analyze metal finishing solutions such as actual chromium plating and electroplating solutions for chromium, sulfur, phosphorus, and iron. The identical experenent was conducted at three different manufacturers of this type of instrument, and included calibration, standardization, and analysis. Although this work has a specific objective related to chromium plating and electropolishing liquid samples, much information is related to and provided for other types of samples. Chemical analysis by x-ray fluorescence spectroscopy is nondestructive, applicable to multiple process streams (liquid or solid), and requires no dilutions. In addition, calibration, standardization, and maintenance are minimal. For the specific metal finishing applications discussed, the resultant data do not suggest that this online monitoring technique is useful at this time, but future work may show this technique to be practical. (jg).
Download or read book Determination of Chromic Acid in Chromium Plating Solutions Using a Redox Titration and Indicator written by Samuel Sopok and published by . This book was released on 1989 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemical literature lacks a simple analytical method for adequately controlling chromic acid in chromium plating solutions during the plating process. In this report, a simple method for analyzing and controlling chromic acid during the plating process is presented. The optimum operating range of chromic acid is 240 to 260 g/l and the resulting precisions are in the range of 0 to 2.5 g/l, providing adequate control of these plating solutions supported by five years of testing. Keywords: Chemical analysis, Chromic acid, Chromium plating solutions, Redox titration, Redox indicator. (aw).
Download or read book Modern Electroplating written by Mordechay Schlesinger and published by John Wiley & Sons. This book was released on 2014-12-22 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive resource for electroplating, now completely up to date With advances in information-age technologies, the field of electroplating has seen dramatic growth in the decade since the previous edition of Modern Electroplating was published. This expanded new edition addresses these developments, providing a comprehensive, one-stop reference to the latest methods and applications of electroplating of metals, alloys, semiconductors, and conductive polymers. With special emphasis on electroplating and electrochemical plating in nanotechnologies, data storage, and medical applications, the Fifth Edition boasts vast amounts of new and revised material, unmatched in breadth and depth by any other book on the subject. It includes: Easily accessible, self-contained contributions by over thirty experts Five completely new chapters and hundreds of additional pages A cutting-edge look at applications in nanoelectronics Coverage of the formation of nanoclusters and quantum dots using scanning tunneling microscopy (STM) An important discussion of the physical properties of metal thin films Chapters devoted to methods, tools, control, and environmental issues And much more A must-have for anyone in electroplating, including technicians, platers, plating researchers, and metal finishers, Modern Electroplating, Fifth Edition is also an excellent reference for electrical engineers and researchers in the automotive, data storage, and medical industries.
Download or read book Determination of Sulfuric Acid in Chromium Plating Solutions Using Gravimetric Analysis written by and published by . This book was released on 1991 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of sulfuric acid in chromium plating solutions is studied in the presence of chromic acid. Cr(III) ions. and Fe(III) ions. The control of the concentration of these four chemical components is necessary to optimize the chromium plating process. In the absence of expensive chemical instrumentation. a gravimetric method suitable for this industrial application is developed in this report. This method uses chromic acid reduction and sulfate precipitation and is a modified version of the standard sulfate Precipitation analysis since it allows the presence of chromic acid. The optimum operating range of sulfuric acid is 2.40 to 3.10 all. and the resulting precisions are in the range of 0.24 to 0.31 g/1 providing marginal control of these plating solutions supported by seven years of testing.
Download or read book Code of Federal Regulations written by and published by . This book was released on 2004 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Code of Federal Regulations Title 40 Protection of Environment Parts 425 699 Revised as of written by U. S. Government Printing Office and published by . This book was released on 2009 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economic Analysis of the Proposed Effluent Guidelines written by A.T. Kearney, Inc and published by . This book was released on 1974 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Code of Federal Regulations Title 40 Protection of Environment PT 425 699 Revised as of July 1 2012 written by U S Office of the Federal Register and published by Government Printing Office. This book was released on 2012-09-28 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Code of Federal Regulations Title 40 Protection of Environment PT 425 699 Revised as of July 1 2011 written by U S Office of the Federal Register and published by Government Printing Office. This book was released on 2011-10 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Code of Federal Regulations of the United States of America written by and published by . This book was released on 2004 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Code of Federal Regulations is the codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.
Download or read book Code of Federal Regulations Title 40 Protection of Environment PT 425 699 Revised as of July 1 2010 written by Office of the Federal Register and published by Government Printing Office. This book was released on 2010-10 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electroplating Metal Finishing written by and published by . This book was released on 1949 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for Jan. 1954-Aug. 1955 include a section: Metal finishing abstracts, later issued separately.
Download or read book 2017 CFR Annual Print Title 40 Protection of Environment Parts 425 to 699 written by Office of The Federal Register and published by IntraWEB, LLC and Claitor's Law Publishing. This book was released on 2017-07-01 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt:
