2 edition of Waste minimization assessment for a manufacturer of printed circuit boards found in the catalog.
Waste minimization assessment for a manufacturer of printed circuit boards
F. William Kirsch
by U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory in Cincinnati, OH
Written in English
|Statement||F. William Kirsch and Gwen P. Looby.|
|Series||Environmental research brief, Environmental research brief|
|Contributions||Looby, Gwen P., Risk Reduction Engineering Laboratory (U.S.)|
|The Physical Object|
|Pagination||6 p. :|
The objective of the method was to prove the concept of a novel waste PCBs recycling process which uses inert, stable molten salts as the direct heat transfer fluid and, simultaneously, uses this molten salt to separate the metal products in either liquid (solder, zinc, tin, lead, etc.) or solid (copper, gold, steel, palladium, etc.) form at the operating temperatures of – ° by: Article Case study: Printed Circuit Board Manufacturing. Aspocomp Ltd. is a Finnish leader in the manufacture of printed circuit boards (PCB), thick film hybrid circuits and mechanical assemblies for the electronics industry. Its main customers are E.
A Printed Circuit Board, (PCB), is used to mechanically support and electrically connect electronic components. It uses conductive pathways, tracks or signal traces etched from copper sheets which are then laminated onto a non-conductive substrate. 1 Printed circuit boards manufacturing Basic board materials o Alternative board materials o Properties of laminates o Track resistance Patterning (photolithography, screen printing) Plating Etching Solder mask Surface finishing: ENIG,HASL, Immersion silver, Immersion tin, Organic board coatings Colours and letters: mandatory partsFile Size: 1MB.
printed circuit boards are so diverse and varied that you can barely list them. In the following presentation: “Cost drivers in manufacturing of PCBs“ I like to indicate and classify the most important PCB features with related process steps and manufacturing methods in the production of PCBs, sorted by their impact on cost. General. Ground up into a powder, printed circuit boards from these products could sponge up another type of pollution—toxic heavy metals in water (Environ. Sci. Sci. Technol. , DOI: /es).
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Waste minimization assessment for a manufacturer of prototype printed circuit boards. Cincinnati, OH: U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory,  (OCoLC) Material Type: Government publication, National government publication, Internet resource: Document Type: Book, Internet Resource.
Get this from a library. Waste minimization assessment for a manufacturer producing printed circuit boards. [Harry W Edwards; Michael Kostrzewa; Phylissa.
&EPA United States Environmental Protection Agency Risk Reduction Engineering Laboratory Cincinnati OH Research and Development EPA//S/ May ENVIRONMENTAL RESEARCH BRIEF Waste Minimization Assessment for a Printed Circuit Board Manufacturer Gwen P.
Looby and F. William Kirsch* Abstract The U.S. Environmental Protection Agency (EPA) has funded a pilot project. Waste minimization options for printed circuit board manufacturers (Section Three); Waste Minimization Assessment Guidelines and Worksheets (Section Four) An Appendix, containing: Case studies of waste generation and waste minimization practices of three printed circuit board manufacturers; - Where to get help: additional sources of Size: 1MB.
This Process Waste Assessment was conducted on the Prototype Printed Wiring Laboratory to identify waste generating processes with the goal of minimizing hazardous wastes.
The primary focus was on the hazardous chemical waste streams generated by the printed circuit board processing line and the associated chemical baths. Volume 2 Number Waste minimization - a case study: J. Sage and H.
Schnitzer Table 1 Process steps and waste streams of printed circuit board manufacture Process step Main waste streams Solid Liquid Gas Mechanical board preparation Surface cleaning Through-hole plating Pattern printing and masking Developing, etching and resist-stripping Cited by: 2.
The WMAC team at the University of Tennessee performed an assessment at a plant manufacturing printed circuit boards for television sets--approximately million sq ft of finished boards. Waste minimization assessment worksheets are contained with in this guide to be of use to shop managers and engineers, or consultants in formulating a waste minimization strategy for a particular plant.
PRINTED CIRCUIT BOARD MANUFACTURING INDUSTRY PROFILE Manufacturers of printed circuit boards (PC boards) are included as part of the. Recycling of waste printed circuit boards: A review of current technologies and treatment status in China. Author links open overlay panel Kui Huang Jie Guo Zhenming Xu.
Show more. less pollution, minimization of the volume of chemical and/or biological sludge to be handled and high efficiency in detoxifying effluents. However, the known Cited by: Printed Circuit Board Recycling Methods 1. Introduction to Printed Circuit Boards The Printed Circuit Board (PCB1) manufacturing process is very complicated, involving many special chemicals and valuable materials.
These materials discharge into the environment in the. retardant chemicals used in printed circuit boards (PCBs). Section. through Section provide general background regarding potential exposure pathways that can occur during different life-cycle stages, discuss factors that affect exposure potential in an industrial setting.
With the development of technologies and the change of consumer attitudes, the amount of waste electrical and electronic equipment (WEEE) is increasing annually. As the core part of WEEE, the waste printed circuit board (WPCB) is a dangerous waste but at the same time a rich resource for various kinds of materials.
In this work, various WPCB treatment methods as well as WPCB recycling Cited by: Shredded circuit boards being recycled are excluded from the definition of solid waste when recycled provided they are stored in containers sufficient to prevent a release to the environment prior to recovery and are free of mercury switches, mercury relays, nickel-cadmium batteries, and lithium batteries (40 CFR §(a)(14)).
The waste printed circuit board (PCB), which is the core and valuable component of e-waste, is a dangerous toxic waste, but at the same time a rich resource for various kinds of metallic and. Waste-minimization assessment for a manufacturer of printed-circuit boards.
Environmental research brief. Waste Minimization Assessment Centers (WMACs) were established at selected universities and procedures were adapted from the EPA Waste Minimization Opportunity Assessment Manual (EPA///, July ).
Purchase Toxic Waste Minimization in the Printed Circuit Board Industry - 1st Edition. Print Book & E-Book. ISBN As the foundation for almost all electronic products, the printed circuit board (PCB) recycling issue has received much attention from the government, enterprises, and communities.
In order to develop environmentally friendly recycling processes of PCB, the advantages and disadvantages of the existing PCB recycling process are analyzed by: Waste printed circuit board recycling techniques and product utilization.
Hadi P(1), Xu M(1), Lin CS(2), Hui CW(1), McKay G(3). Author information: (1)Chemical and Biomolecular Engineering Department, Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong Special Administrative by: The term “chelating agent”, as used in the printed circuit board industry, has a much broader definition than the definition in text books.
The PCB industry uses the term chelate to mean any agent that will form a compound with a heavy metal ion that is not precipitated in a conventional pH adjust/precipitation waste water treatment facility. ORIGINAL PAPER Recovery of valuable metal concentrate from waste printed circuit boards by a physical beneﬁciation technology J.
He • C. Duan • Y. He • H. Zhang Received: 11 March /Accepted: 11 August /Published online: 22 August. Printed circuit boards (PCBs) can be found in any piece of electrical or electronic equipment: nearly all electronic items, including calculators and remote control units, contain large circuit boards; an increasing number of white goods, as washing machines contains circuit boards for example in electronic by: This paper an presents analysis of metals in waste of printed circuit boards (PCB) covering types of PCB, segregated from PC computers, mobile phones, and mixed.
The presented data identifies metals and other substances found in PCB waste based on elemental and technical analysis of PCBs. PCB.Printed Circuit Boards (PCBs) are an integral part of any electronic equipment.
The growth of e-waste as end-of-life electronic equipments at an exponential rate is producing large quantities of discarded PCBs. In India, current recycling and processing of PCBs is managed almost entirely by the informal sector or the unskilled labor (95%). The crude recycling activities cause irreversible Cited by: 9.