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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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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: Moreover, heavy metals will dissolve, and release into the ground water from the landfill sites.Such waste PCBs contain precious metals which are of monetary value.Hydrometallurgy is a successful technique used worldwide for the recovery of precious metals (especiallyThis article reviews the recent trends and developments with regard to the recycling of precious metals

Keywords： Waste PCBs     Precious metals     Hydrometallurgy     Recycling     Leaching     Recovery    

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Recovery of rare and precious metals from urban mines—A review

Mengmeng Wang, Quanyin Tan, Joseph F. Chiang, Jinhui Li

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0963-1

Abstract: The recovery of rare and precious metals (RPMs) from urban mines has attracted increasing attention fromHydrometallurgical processing is effective and easy to operate, with high selectivity of target metals

Keywords： Rare and precious metals (RPMs)     Distribution characteristics     Recycling technology     Emerging technology    

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Study of the Behaviour of Precious Metals in Metallurgy Processes in Terms of Atomic Structure

Chen Jing

Strategic Study of CAE 1999, Volume 1, Issue 2,   Pages 34-40

Abstract:

The differences of chemical characteristics of Fe, Co, Ni, Cu 3d and other eight precious metal elementsin M group and Ⅷ group, together with that of precious metal elements of Ru, Rh, Pd, Ag 4d and Os, IrFrom the practice of extraction metallurgy of precious metals from copper-sulphide nickel ores, the paperdiscussed the behaviour of precious metal elements in thermometallurgical processes such as baking-reduction

Keywords： atomic structure     precious metals     extractive metallurgy    

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Relationship Between Physical Properties of Precious Metals and Atomic Structure

Chen Jing

Strategic Study of CAE 2000, Volume 2, Issue 7,   Pages 66-73

Abstract:

Through arranging the physical properties of the eight precious metals in accordance with their positions

Keywords： precious metals     physical properties     atomic structure    

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Discussion on the Micro-mechanism of Precious Metals Trapped inPyro-metallurgical Processes by Base Metals

Chen Jing

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 11-16

Abstract:

The micro-mechanism of precious metals trapped in pyro-metallurgicalprocesses by base metals or their mattes were discussed in present paper .It was forwarded that the reasonsfor trace amount of precious metals trapped into base metals or matteswere that the melted slag phasesthe metal atoms.And because the electrons in the metal phases can move freely among the atoms, the preciousThe properties of the matte are in fact similar with that of metal at their melted state, therefore precious

Keywords： pyro-metallurgy；matte smelting；trapping；precious metals    

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Improvement potential of today’s WEEE recycling performance: The case of LCD TVs in Belgium

Paul Vanegas, Jef R. Peeters, Dirk Cattrysse, Wim Dewulf, Joost R. Duflou

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-1000-0

Abstract: The analysis shows that while recycling performance for ferrous metals and aluminium are relatively high; there is substantial room to better close the material loops for precious metals (PM) and plastics.

Keywords： Recycling     Waste of electrical and electronic equipment (WEEE)     Material flow analysis     LCD TVs     Preciousmetals     Plastics    

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Exploration of the oxygen transport behavior in non-precious metal catalyst-based cathode catalyst layer

Shiqu CHEN, Silei XIANG, Zehao TAN, Huiyuan LI, Xiaohui YAN, Jiewei YIN, Shuiyun SHEN, Junliang ZHANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 123-133 doi: 10.1007/s11708-022-0849-1

Abstract: Although non-precious metal catalysts (NPMCs) show appreciable activity and stability in the oxygen reduction

Keywords： proton exchange membrane fuel cells (PEMFCs)     non-precious metal catalyst (NPMC)     cathode catalyst layer    

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ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 437-447 doi: 10.15302/J-FASE-2023507

Abstract:

● Content of heavy metals in hydrochar varies considerably, from 50%

Keywords： heavy metals     dairy manure     hydrochar     hydrothermal carbonization     waste management    

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Effect of lime on speciation of heavy metals during composting of water hyacinth

Jiwan SINGH,Ajay S. KALAMDHAD

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 93-102 doi: 10.1007/s11783-014-0704-7

Abstract: However, the major disadvantage of water hyacinth composting is the high content of heavy metals in thelime sludge significantly reduced most bioavailable fractions (exchangeable and carbonate) of heavy metalsTessier sequential extraction method was employed to investigate the changes in speciation of heavy metalsEffects of physicochemical parameters such as temperature, pH and organic matter on speciation of heavy metalsAddition of lime was very effective for reduction of bioavailability of heavy metals during composting

Keywords： composting     lime     heavy metals     bioavailability factor     speciation    

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Emerging roles of liquid metals in carbon neutrality

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 393-396 doi: 10.1007/s11708-022-0829-5

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Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1475-6

Abstract:

• The concentrations of 13 heavy metals in Taihu Lake were analyzed.

Keywords： Heavy metals     Human health ambient water quality criteria     Taihu Lake     Health risk assessment     Contribution    

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Predicting non-carcinogenic hazard quotients of heavy metals in pepper (

Marzieh Mokarram, Hamid Reza Pourghasemi, Huichun Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1331-0

Abstract: Abstract • There was significant absorption of heavy metals by the pepper in contaminated soils. • TheGiven the tendency of heavy metals to accumulate in soil and plants, the purpose of this study was toFor this purpose, we measured the uptake of the four heavy metals by peppers grown in the heavy metalElectromagnetic waves were also applied for analyzing the responses of the target plants to various heavy metalsTherefore, in future studies, instead of examining the amount of heavy metals in plants by chemical analysis

Keywords： Heavy metals     Plants     Target Hazard Quotient (THQ)     Principal Component Analysis (PCA)     Random search     Electromagnetic    

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Re-evaluation of several heavy metals removal by natural limestones

Ali SDIRI,Samir BOUAZIZ

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 418-432 doi: 10.1007/s11705-014-1455-5

Abstract: Different treatment technologies have been efficiently applied to remove heavy metals from wastewaterOn the other hand, heavy metals are the most threatening groundwater contaminants because of their toxicityThe removal of toxic metals may include different mechanisms (e.g., physisorption, chemisorptions, precipitationSorption of toxic metals (e.g., Pb, Cu, Cd, Zn, Cr, Hg, etc.) onto natural limestone involved precipitation

Keywords： limestone     heavy metals     sorption     wastewater     passive treatment technology    

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Title Author Date Type Operation

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

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

Recovery of rare and precious metals from urban mines—A review

Mengmeng Wang, Quanyin Tan, Joseph F. Chiang, Jinhui Li

Journal Article

Study of the Behaviour of Precious Metals in Metallurgy Processes in Terms of Atomic Structure

Chen Jing

Journal Article

Relationship Between Physical Properties of Precious Metals and Atomic Structure

Chen Jing

Journal Article

Discussion on the Micro-mechanism of Precious Metals Trapped inPyro-metallurgical Processes by Base Metals

Chen Jing

Journal Article

Striving for Great Cause and Fruitful Reform-Kunming Precious Metals Research Institute

null

Journal Article

Improvement potential of today’s WEEE recycling performance: The case of LCD TVs in Belgium

Paul Vanegas, Jef R. Peeters, Dirk Cattrysse, Wim Dewulf, Joost R. Duflou

Journal Article

Exploration of the oxygen transport behavior in non-precious metal catalyst-based cathode catalyst layer

Shiqu CHEN, Silei XIANG, Zehao TAN, Huiyuan LI, Xiaohui YAN, Jiewei YIN, Shuiyun SHEN, Junliang ZHANG

Journal Article

ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Journal Article

Effect of lime on speciation of heavy metals during composting of water hyacinth

Jiwan SINGH,Ajay S. KALAMDHAD

Journal Article

Emerging roles of liquid metals in carbon neutrality

Journal Article

Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

Journal Article

Predicting non-carcinogenic hazard quotients of heavy metals in pepper (

Marzieh Mokarram, Hamid Reza Pourghasemi, Huichun Zhang

Journal Article

Re-evaluation of several heavy metals removal by natural limestones

Ali SDIRI,Samir BOUAZIZ

Journal Article