Download or read book Recovery of Heavy Metals from Chrome plating Rinse Wastewater by Reverse Osmosis written by Nagaretnam Keethanchali and published by . This book was released on 1999 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater produced by industries contains harmful and toxic metals which danger the receiving water. Chrome - plating rinse water which contains chromium is very toxic to the enviroment. Reverse osmosis is used with the tubular module B1 membrane to reduce the chromium, manganese, lead and copper to a reasonable level which is less harmful. Chromium (Cr) is reduced by 87.9% while Lead (Pb) is reduced by 94.3% followed by Manganese (Mn) by 85.7% and Copper (Cu) by 91.9%. the fluxrate increase with tranmembrane pressure from 43 l/m2. Hr at 40 bar 60 l/m2 with a TDS of 2689 mg/l. The permeate flux was directly proportional to the transmembrane pressure which follows the Resistance Model. This method is quite appropriate for Lead (Pb), copper (Cu) and chromium (Cr) reduction. Nowadays reverse osmosis is gaining interest in the industries which produce wastewater containing high concentration of heavy metals.
Download or read book Recovery of Heavy Metals from Electroplanting Rinse Wastewater by Reverse Osmosis written by Boon Yan See and published by . This book was released on 1996 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Pollution Control Alternatives written by Industrial Environmental Research Laboratory (Cincinnati, Ohio) and published by . This book was released on 1979 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical feasibility study on the chromium recovery from electroplating effluents written by Daniel Wiemken and published by diplom.de. This book was released on 2014-04-11 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inhaltsangabe:Introduction: Rapid industrialisation and growth in population over the past two hundred years exert an increasing pressure on natural resources and the environment. Billions of tons of controlled and scheduled waste are generated every year by the industrial sector worldwide which is often either pre-treated on-site or at a licensed contractor prior to disposal in landfills. This practice if continued is leading to resource depletion and creates a potentially harmful legacy for future generations. In order to move towards a more sustainable development as outlined in the Bruntland Report, waste reduction, reuse and recycling coupled with pollution prevention measures play an important part to slow down if not reverse this practice. Heavy metals such as cadmium, mercury, lead and chromium are not degradable or renewable like biomass hence if they are to be used in future processes reuse and recycling are the only options. At present, heavy metals are used in the chemical industry sector for applications ranging from batteries to catalysts and surface coatings, and can be found at various concentrations in gaseous, liquid or solid waste. Chromium is of particular interest owing to its legislative status and unique chemistry. Chromium exists in nature primarily in one of two oxidation states. There are other chemical oxidation states of chromium, which include 0, II, IV, and V, but they are considered transitory compared to more stable Cr(III) and Cr(VI) species. Hexavalent chromium is a strong oxidizer which can react with DNA causing mutation, while the trivalent, organically complex form is a dietary supplement to help with proper glucose metabolism, weight loss and muscle tone. Unlike many other metals, Cr(VI) can combine with oxygen to form water-soluble, negatively charged anions known as yellow chromate (CrO42-) or orange dichromate (Cr2O72-), which adsorb to positively charged sites in contrast to cationic metal species. Therefore, hexavalent chromium species are not strongly bonded in many soils under alkaline to slightly acidic conditions, for example. Thus, they can be very mobile in subsurface environment while other metals precipitated out and exert toxic effects on biological systems. Various well-established methods may be used to treat industrial effluents and contaminated water such as reduction and precipitation, reverse osmosis, evaporation, ion exchange and adsorption. While these processes are able to remove [...]
Download or read book Evaporative recovery of chromium plating rinse waters written by Leonard N. Elicker and published by . This book was released on 1978 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Metal Finishing Industry written by DIANE Publishing Company and published by DIANE Publishing. This book was released on 1975-07 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Membrane Handbook written by Winston Ho and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane processes have wide industrial ap This handbook reviews the published litera plications covering many existing and emerging ture, presents an in-depth description of com uses in the chemical, petrochemical, petroleum, mercialized membrane processes, and gives a state-of-the-art review of new membrane pro environmental, water treatment, pharmaceutic al, medical, food, dairy, beverage, paper, tex cess concepts under development. It is intended tile, and electronic industries. The existing ap to be a single source of underlying principles, membranes, membrane modules, process de plications include: (1) dialysis for the purifica tion of human blood (the artificial kidney), (2) sign, applications, and cost estimates. It is also electrodialysis for the desalination of brackish a first attempt to bridge the gap between the water to produce potable water, (3) reverse theory and practice. osmosis for the desalination of seawater, (4) There are several groups which may benefit ultrafiltration for the concentration of large pro from this handbook. It can be used as educa tein molecules from cheese, casein whey, and tional material for industrial personnel engaged milk, and (5) microfiltration for the sterilization in membrane separations. For scientists and of pharmaceutical and medical products, beer, engineers active in research and development in wine, and soft drinks. Since membrane pro synthetic membranes, it will serve as a single cesses generally have low capital investment, as source of reference for the entire field.
Download or read book Chromium in the Natural and Human Environments written by Jerome O. Nriagu and published by John Wiley & Sons. This book was released on 1988-03-31 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive chemical and biochemical treatment on the effects of chromium in the environment and in man. Such an integrated treatment of the chemical and biochemical aspects of chromium is novel and has not appeared in the published literature. Reviews the information on global cycling and environmental occurrence of chromium compounds, which defines the extent of the environmental and toxicological concern. The treatment of chromium chemistry provides the basis for toxicological models of chromium hypersensitivity, mutagenicity, carcinogenicity, and toxicokinetics. Chapters contain graphical representations of the voluminous mutagenicity and animal carcinogenicity data according to chromium compound type, and a tabular summary of all published epidemiological data, broken down according to industry. Also covers clinical patterns, prognosis, pathogenesis, prophylaxis, and environmental and biological monitoring.
Download or read book Second Conference on Advanced Pollution Control for the Metal Finishing Industry Presented at Orlando Hyatt House Kissimmee Fl February 5 7 1979 written by and published by . This book was released on 1979 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Aspects of the Metal Finishing Industry written by and published by . This book was released on 1989 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Project Summary written by Charles E. Schmidt and published by . This book was released on 1993 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fourth Conference on Advanced Pollution Control for the Metal Finishing Industry written by and published by . This book was released on 1983 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Cleaning Finishing and Coating written by and published by . This book was released on 1982 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Industrial Waste Treatment Handbook written by Frank Woodard and published by Elsevier. This book was released on 2001-09-11 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: All industries produce waste products that unless treated or mitigated in some way will be harmful to the human or natural environment. These waste products will generally need to be identified according to the industrial process in question, neutralized or rendered less harmful and finally disposed of into the surrounding land, air or watercourses. It is therefore of vital importance to every environmental, pollution or plant manager or engineer that these processes be fully understood and implemented or the cost to either the company or the environment can be catastrophic.With increasing government regulation of pollution, as well as willingness to levy punitive fines for transgressions, and the ever-present financial imperative to carry out these activities in the most efficient and cost-effective manner it is the responsibility of the professionals in question to ensure that they have the most up-to-date information available at their disposal. This book provides not only that, but the only available methodology for identifying which waste types are produced from which industrial processes, and how they can be treated. This unique feature makes this book one that every environmental, industrial and plant manager, engineer and consultant will want to have on their bookshelf. Essential aspect of, and requirement for, all manufacturing industryThe only up-to-date book on this subject area availableTakes a practical applications standpoint, not a theoretical approach
Download or read book Watts Nickel and Rinse Water Recovery Via an Advanced Reversed Osmosis System written by C. Schmidt and published by . This book was released on 1993 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International waste minimization approaches and policies to metal plating written by and published by . This book was released on 1996 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
