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Thermal cracking of waste printed wiring boards for mechanical recycling by using residual steam preprocessing

Yao CHEN, Jinhui LI, Huabo DUAN, Zhishi WANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 167-174 doi: 10.1007/s11783-011-0308-4

Abstract: Mechanical waste-processing methods, which combine crushing and separation processes for the recoveryof valuable materials, have been widely applied in waste printed wiring board (PWB) treatment.However, both the high impact toughness and the tensile and flexural strengths of whole PWB with a laminatedA thermal-crack method using residual steam as the heating medium has been developed to pre-treat wasteimpact, tensile and flexural strengths respectively, by 59.2%, 49.3% and 51.4%, compared to untreated PWB

Keywords： waste printed wiring board (PWB)     residue steam     thermal-crack     mechanical properties    

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Self-catalytic pyrolysis thermodynamics of waste printed circuit boards with co-existing metals

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1581-0

Abstract:

● The co-existing metals in WPCBs has positive catalytic influence in pyrolysis.

Keywords： Waste printed circuit board     Catalyst     Pyrolysis     Kinetics    

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Non-toxic, high selectivity process for the extraction of precious metals from waste printed circuit

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1723-z

Abstract:

● Au, Ag and Pd were recovered from WPCBs with high efficiencies.

Keywords： Thiosulfate     Printed circuit boards     Precious metals     Leaching     Hydrometallurgy    

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Copper recovery from waste printed circuit boards concentrated metal scraps by electrolysis

Xiaonan Liu, Qiuxia Tan, Yungui Li, Zhonghui Xu, Mengjun Chen

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0997-4

Abstract: Copper recovery is the core of waste printed circuit boards (WPCBs) treatment.Thus, electrolysis proposes a feasible and prospective approach for waste printed circuit boards recycle, even for e-waste, though more researches are needed for industrial application.

Keywords： Waste printed circuit boards (WPCBs)     Copper     Recovery rate     Purity     Electrolysis    

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Copper fractal growth during recycling from waste printed circuit boards by slurry electrolysis

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1405-7

Abstract:

• Copper fractal growth was observed during WPCBs recycling by slurry electrolysis.

Keywords： Dendritic copper     Fractal growth     WPCBs     Slurry electrolysis    

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A critical review on the recycling of copper and precious metals from waste printed circuit boards using

Zebing Wu, Wenyi Yuan, Jinhui Li, Xiaoyan Wang, Lili Liu, Jingwei Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0995-6

Abstract: In particular, waste printed circuit boards (PCBs) have become of global concern with regard to environmentalThere are many environmental threats owed to the disposal of electronic waste; off-gasses, such as dioxinsSuch waste PCBs contain precious metals which are of monetary value.worldwide for the recovery of precious metals (especially gold and silver) from ores, concentrates, and wastearticle reviews the recent trends and developments with regard to the recycling of precious metals from waste

Keywords： Waste PCBs     Precious metals     Hydrometallurgy     Recycling     Leaching     Recovery    

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A study for printed circuit board image registeration algorithm based on AOI

Guo Fenglin,Guan Shu′an,Kong Yan

Strategic Study of CAE 2012, Volume 14, Issue 11,   Pages 103-106

Abstract:

In the printed circuit board defect inspection based on AOI, there are

Keywords： PCB defect inspection     image registration     edge points sampling     registration strength    

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Real-world fuel consumption of light-duty passenger vehicles using on-board diagnostic (OBD) systems

Xuan Zheng, Sheng Lu, Liuhanzi Yang, Min Yan, Guangyi Xu, Xiaomeng Wu, Lixin Fu, Ye Wu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1212-6

Abstract: • Fuel consumption (FC) from LDPVs is measured using on-board diagnostic method (OBD). • The FC ofThe on-board diagnostic (OBD) approach, which is flexible and offers high-resolution data collection,

Keywords： Fuel consumption     Light-duty passenger vehicles     On-board diagnostic systems    

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Design on the board of spiral cooling tower

Huang Rui

Strategic Study of CAE 2008, Volume 10, Issue 11,   Pages 43-46

Abstract: spiral line on the central axial pipe, as well as the topologic shape in the plane for the curving boardAccording to the basic parameters of cooling tower, the critic parameters of spiral curving board canbe ascertainable, so as to accurately link up the tower board with the tower wall and the inner axial

Keywords： cooling tower     board     spiral curving board     topology    

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Design of a PCB stator coreless axial flux permanent magnet synchronous motor based on a novel topology Halbach array Regular Papers

Xiao-yuan WANG, Xiang LI, Chun-peng LI, Si-jia XU, Le-tao LING

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 3,   Pages 414-424 doi: 10.1631/FITEE.1700345

Abstract:

A novel topology Halbach permanent magnet array is proposed and applied to the design of a printedcircuit board (PCB) axial flux permanent magnet (AFPM) motor.

Keywords： Axial flux permanent magnet synchronous motor     Printed circuit board     Halbach permanent magnet array     Finite    

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Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths

Juan Carlos HERNANDEZ-CASTANEDA, Boon Keng LOK, Hongyu ZHENG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 303-318 doi: 10.1007/s11465-019-0562-x

Abstract: This study explores the feasibility of different laser systems to sinter screen-printed lines from nonconductiveThese materials are commonly used in manufacturing functional printed electronics for large-area applications

Keywords： laser sintering     copper nanoparticles     printed electronics    

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Printability and hardening performance of three-dimensionally-printed geopolymer based on lunar regolith

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0003-0

Abstract: The results show that heating the printed filaments with a water-to-binder ratio of 0.32 at 80 °C can

Keywords： geopolymer     lunar regolith simulant     3D printing     rheology     printability    

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Introduction to the Special Issue on Additive Manufacturing

Editorial Board of Special Issue on Additive Manufacturing

Engineering 2017, Volume 3, Issue 5, doi: 10.1016/J.ENG.2017.05.027

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Integrated approach to winery waste: waste generation and data consolidation

Margarida OLIVEIRA,Elizabeth DUARTE

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 168-176 doi: 10.1007/s11783-014-0693-6

Abstract: The winemaking process involves the generation of a significant amount of waste and wastewater.As each winery is unique in waste generation and disposal, plans for environmentally friendly waste managementthree years, in different wineries, throughout Portugal, in order to quantify and characterize the wasteThe results showed that solid waste and wastewater are mainly produced during the harvest period, corresponding

Keywords： waste management     wastewater reuse     winery wastewater    

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The road to sustainable use and waste management of plastics in Portugal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 1,   Pages 5-5 doi: 10.1007/s11783-021-1439-x

Abstract:

• Portugal recycles 34% of the 40 kg/hab year of plastic packaging waste

Keywords： Single-use plastics     Plastic packaging     Plastic waste     Waste management     Waste shipment     Lightweight    

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Title Author Date Type Operation

Thermal cracking of waste printed wiring boards for mechanical recycling by using residual steam preprocessing

Yao CHEN, Jinhui LI, Huabo DUAN, Zhishi WANG

Journal Article

Self-catalytic pyrolysis thermodynamics of waste printed circuit boards with co-existing metals

Journal Article

Non-toxic, high selectivity process for the extraction of precious metals from waste printed circuit

Journal Article

Copper recovery from waste printed circuit boards concentrated metal scraps by electrolysis

Xiaonan Liu, Qiuxia Tan, Yungui Li, Zhonghui Xu, Mengjun Chen

Journal Article

Copper fractal growth during recycling from waste printed circuit boards by slurry electrolysis

Journal Article

A critical review on the recycling of copper and precious metals from waste printed circuit boards using

Zebing Wu, Wenyi Yuan, Jinhui Li, Xiaoyan Wang, Lili Liu, Jingwei Wang

Journal Article

A study for printed circuit board image registeration algorithm based on AOI

Guo Fenglin,Guan Shu′an,Kong Yan

Journal Article

Real-world fuel consumption of light-duty passenger vehicles using on-board diagnostic (OBD) systems

Xuan Zheng, Sheng Lu, Liuhanzi Yang, Min Yan, Guangyi Xu, Xiaomeng Wu, Lixin Fu, Ye Wu

Journal Article

Design on the board of spiral cooling tower

Huang Rui

Journal Article

Design of a PCB stator coreless axial flux permanent magnet synchronous motor based on a novel topology Halbach array

Xiao-yuan WANG, Xiang LI, Chun-peng LI, Si-jia XU, Le-tao LING

Journal Article

Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths

Juan Carlos HERNANDEZ-CASTANEDA, Boon Keng LOK, Hongyu ZHENG

Journal Article

Printability and hardening performance of three-dimensionally-printed geopolymer based on lunar regolith

Journal Article

Introduction to the Special Issue on Additive Manufacturing

Editorial Board of Special Issue on Additive Manufacturing

Journal Article

Integrated approach to winery waste: waste generation and data consolidation

Margarida OLIVEIRA,Elizabeth DUARTE

Journal Article

The road to sustainable use and waste management of plastics in Portugal

Journal Article