Plasma technology for processing of waste printed circuit boards for metals recovery

2016 ◽  
Vol 1 (7) ◽  
pp. 22-28
Author(s):  
JAKUB WINIARSKI
Keyword(s):  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Plasma Technology ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Metals Recovery

scholarly journals Composites of Styrene-Butadiene Block-Copolymer Reinforced with Waste Printed Circuit Boards (WPCB)

2020 ◽  
Vol 57 (1) ◽  
pp. 92-99
Author(s):  
Paul Ghioca ◽  
Ramona Marina Grigorescu ◽  
Lorena Iancu ◽  
Rodica-Mariana Ion ◽  
Madalina-Elena David ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Printed Circuit Boards ◽  
Rapid Development ◽  
Mechanical Analysis ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Metals Recovery ◽  
Shoe Soles ◽  
Styrene Butadiene

In recent years, the rapid development of electronic equipment led to millions of tons of waste printed circuit boards (WPCB) generated in the entire world rising important concerns regarding its recycling. Besides the metals recovery, intensively studied, the reuse of the nonmetals is especially difficult. In this study, the non-metallic fraction from the waste of printed circuit boards is used as reinforcing filler of a styrene-butadiene block-copolymer. The composites were characterized by mechanical and dynamo-mechanical analysis and thermo-gravimetry. The study aimed the reintroduction into the economic circuit of WPCB as composites suitable for the production of shoe soles injected directly on the footwear faces and as bitumen modifiers for road coverings.

Progress in the Preparation of Composites Based on the Nonmetallic Fractions Recycled from Waste Printed Circuit Boards

2010 ◽  
Vol 160-162 ◽  
pp. 518-523 ◽  
Author(s):  
Wei Qiao Liu ◽  
Xing Xing Wang ◽  
Wei Ning Lei ◽  
Tong Ming Shang ◽  
Quan Fa Zhou
Keyword(s):  
Renewable Resources ◽  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Research Directions ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Inorganic Composites ◽  
Metals Recovery ◽  
Waste Pcbs ◽  
Properties Of Composites

From the use of renewable resources and environmental protection, recycling of waste printed circuit boards (PCBs) receives wide concerns as the amounts of scrap PCBs increases dramatically. However, the recycle technology for waste PCBs in China is still immature. Previous studies focused on metals recovery, but resource utilization for nonmetallic fractions (NMFs) is relatively fewer. In this paper, the physical properties of the recovered nonmetallic powder is briefly introduced. The preparation of composites including organic and inorganic composites through the recycling NMFs was reviewed. In addition, the research directions of preparation of composites based on recycling NMFs were put forward. Firstly, the study on the reaction mechanism of composites preparation should be strengthened to explore the reasons why the additional quantity and particle size of NMFs powder have effects on the properties of composites. Secondly, a suitable coupling agent should be chosen to improve the the interface compatibility between the NMFs and matrix.

Metals recovery from dust derived from recycling line of waste printed circuit boards

2017 ◽  
Vol 165 ◽  
pp. 452-457 ◽  
Author(s):  
Fangfang Wang ◽  
Yuemin Zhao ◽  
Tao Zhang ◽  
Guangwen Zhang ◽  
Xing Yang ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Metals Recovery

scholarly journals Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards

Metals ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 441 ◽  
Author(s):  
Željko Kamberović ◽  
Milisav Ranitović ◽  
Marija Korać ◽  
Zoran Andjić ◽  
Nataša Gajić ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Hydrometallurgical Process ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Metals Recovery

LEACHING OF METALS FROM WASTE PRINTED CIRCUIT BOARDS (WPCBs) USING SULFURIC AND NITRIC ACIDS

2014 ◽  
Vol 13 (10) ◽  
pp. 2601-2607 ◽  
Author(s):  
Jae-chun Lee ◽  
Manoj Kumar ◽  
Min-Seuk Kim ◽  
Jinki Jeong ◽  
Kyoungkeun Yoo
Keyword(s):  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards

scholarly journals Effective Recovery Process of Copper from Waste Printed Circuit Boards Utilizing Recycling of Leachate

JOM ◽  
2020 ◽  
Author(s):  
Joona Rajahalme ◽  
Siiri Perämäki ◽  
Roshan Budhathoki ◽  
Ari Väisänen
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
Printed Circuit Boards ◽  
Sulfuric Acid Concentration ◽  
Recovery Process ◽  
Copper Recovery ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Acid Consumption

AbstractThis study presents an optimized leaching and electrowinning process for the recovery of copper from waste printed circuit boards including studies of chemical consumption and recirculation of leachate. Optimization of leaching was performed using response surface methodology in diluted sulfuric acid and hydrogen peroxide media. Optimum leaching conditions for copper were found by using 3.6 mol L−1 sulfuric acid, 6 vol.% hydrogen peroxide, pulp density of 75 g L−1 with 186 min leaching time at 20°C resulting in complete leaching of copper followed by over 92% recovery and purity of 99.9% in the electrowinning. Study of chemical consumption showed total decomposition of hydrogen peroxide during leaching, while changes in sulfuric acid concentration were minor. During recirculation of the leachate with up to 5 cycles, copper recovery and product purity remained at high levels while acid consumption was reduced by 60%.

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