CN110071316B - Heat regeneration ammonia battery formed by waste printed electronic circuit board and treatment method - Google Patents
Heat regeneration ammonia battery formed by waste printed electronic circuit board and treatment method Download PDFInfo
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- CN110071316B CN110071316B CN201910346000.XA CN201910346000A CN110071316B CN 110071316 B CN110071316 B CN 110071316B CN 201910346000 A CN201910346000 A CN 201910346000A CN 110071316 B CN110071316 B CN 110071316B
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- copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9041—Metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/182—Regeneration by thermal means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Abstract
The invention discloses a heat regeneration ammonia battery formed by waste printed electronic circuit boards and a processing method; a thermal regeneration ammonia battery formed by using a waste printed electronic circuit board comprises a cathode chamber, an anion exchange membrane and an anode chamber, wherein a cathode copper foam electrode and a cathode electrolyte are arranged in the cathode chamber, and an anode electrode and an anode electrolyte are arranged in the anode chamber; the method is characterized in that: the anode electrode is composed of a waste printed electronic circuit board, all copper-clad wires on the printed electronic circuit board are communicated through an external short circuit line, meanwhile, one copper-clad wire is connected with one end of an external load through a flow deflector, and the other end of the external load is connected with the cathode foam copper electrode; the invention can be widely applied to the fields of energy, environmental protection and the like.
Description
Technical Field
The invention relates to a heat regeneration ammonia battery, in particular to a heat regeneration ammonia battery formed by utilizing a waste printed electronic circuit board and a treatment method.
Background
A Thermal Regeneration Ammonia Battery (TRAB) is a novel electrochemical system electricity generation technology capable of converting chemical energy into electric energy by utilizing low-temperature waste heat, and mainly comprises a battery electricity generation part and a thermal regeneration and gas-liquid separation part.
In the electricity generation part of the battery, the thermal regeneration ammonia battery is based on a thermoelectric chemical reaction, the cathode adopts metal which does not react with copper ions dissolved in a solution as an electrode, and the anode generally adopts metal copper as an electrode. The negative electrode and the positive electrode are separated by an anion exchange membrane, the negative electrode and the positive electrode form a potential difference due to different ammonia concentrations, and can react at the positive electrode to generate a metal ammonia complex and electrons, the metal ammonia complex and the electrons are connected with an external resistor, the electrons are conducted to the surface of the negative electrode through an external circuit, and the anions in the solution are transmitted through the anion exchange membrane to form a loop to generate current.
And a thermal regeneration and gas-liquid separation part, wherein the anolyte reacted in the power generation part of the battery is introduced into a distillation tower, and is heated by low-temperature waste heat to carry out gas-liquid separation, so that high-concentration copper ion solution and ammonia gas are separated, the ammonia gas enters the anode of the next battery to be used as an anode reactant, and the copper ion solution enters the cathode of the next battery to be used as catholyte for recycling. The thermal regeneration ammonia battery technology has the characteristics of mild reaction conditions, simple structure, strong expansibility, lower cost, environmental friendliness and the like.
Printed Circuit Boards (PCBs) are the basis of the electronic industry and indispensable parts in various electronic products, about 200 kg of copper is contained in one ton of waste Circuit boards, and the recycling of the copper resources has important significance for sustainable development in China.
Disclosure of Invention
The invention aims to provide a heat regeneration ammonia battery formed by utilizing a waste printed electronic circuit board and a treatment method.
In order to solve the above technical problem, a first technical solution of the present invention is:
a thermal regeneration ammonia battery formed by using a waste printed electronic circuit board comprises a cathode chamber, an anion exchange membrane and an anode chamber, wherein a cathode copper foam electrode and a cathode electrolyte are arranged in the cathode chamber, and an anode electrode and an anode electrolyte are arranged in the anode chamber; the method is characterized in that: the anode electrode is composed of a waste printed electronic circuit board, all copper-clad wires on the printed electronic circuit board are communicated through an external short circuit line, meanwhile, one or more copper-clad wires are connected with one end of an external load through a flow deflector, and the other end of the external load is connected with the cathode foam copper electrode.
According to the preferable scheme of the thermal regeneration ammonia battery formed by utilizing the waste printed electronic circuit board, the catholyte is a mixed solution of copper sulfate and ammonium sulfate, and the anolyte is ammonium sulfate.
According to the preferred embodiment of the heat regeneration ammonia battery formed by the waste printed electronic circuit board, a cathode side end plate and an anode side end plate (10) are respectively arranged at the outer sides of the cathode chamber and the anode chamber.
The second technical scheme of the invention is a method for treating a waste printed electronic circuit board by using a heat regeneration ammonia battery, which is characterized by comprising the following steps: the method comprises the following steps:
firstly, preprocessing a waste printed electronic circuit board: connecting all copper-clad wires on the waste printed electronic circuit board through an external short circuit line; and then soaking the printed electronic circuit board in a dissolving agent capable of removing the green oil on the surface of the copper-clad wire so as to remove the green oil on the surface of the copper-clad wire and expose the copper wire on the printed electronic circuit board.
Secondly, establishing a heat regeneration ammonia battery: the thermal regeneration ammonia battery comprises an anode chamber, an anion exchange membrane and a cathode chamber, wherein the cathode chamber and the anode chamber are respectively provided with a cathode electrolyte input and output hole and an anode electrolyte input and output hole.
Thirdly, placing the pretreated printed electronic circuit board in an anode chamber; one or more copper-coated wires on the printed electronic circuit board are connected with one end of an external load through a flow deflector, and the other end of the external load is connected with a cathode foam copper electrode; a cathode copper foam electrode was placed in the cathode chamber.
Fourthly, adding the catholyte and the anolyte into the cathode chamber and the anode chamber through a catholyte input and output hole and an anolyte input and output hole respectively; and adding ammonia water or blowing ammonia gas into the cathode chamber, wherein the copper-clad wire on the printed electronic circuit board is corroded by the ammonia water to generate a complex reaction, and electrons and copper tetraammine ions are generated. The generated electrons are transferred to the cathode through an external circuit, combined with copper ions in the catholyte and deposited on the surface of the cathode electrode, and anions in the catholyte and the anolyte migrate through an anion exchange membrane to form stable current; and when the copper-clad wire on the printed electronic circuit board is corroded, the reaction is finished, and the battery stops working.
According to the preferable scheme of the method for treating the waste printed electronic circuit board by using the thermal regeneration ammonia battery, the catholyte is a mixed solution of copper sulfate and ammonium sulfate, and the anolyte is ammonium sulfate.
According to the preferable scheme of the method for treating the waste printed electronic circuit board by utilizing the thermal regeneration ammonia battery, the reacted anolyte is introduced into a distillation tower, ammonia gas and mixed solution of copper sulfate and ammonium sulfate with higher concentration are distilled out, the mixed solution can be continuously introduced into a cathode chamber of the thermal regeneration ammonia battery to be used as catholyte, and the separated ammonia gas is introduced into an anode chamber of the battery to be used as reactant to participate in the reaction in the anode again.
A cathode side end plate and an anode side end plate are respectively arranged outside the cathode chamber and the anode chamber.
The principle of the invention is as follows:
the invention connects all copper-clad wires on the printed electronic circuit board through an external short circuit line, so that the whole circuit board forms a conductive whole, ammonia in electrolyte reacts with copper on the printed electronic circuit board after pretreatment on the anode side, copper tetraammine ions are generated in anolyte, electrons reach a cathode foamy copper electrode along an external circuit, and the copper ions in the catholyte obtain electrons on the foamy copper cathode electrode to be reduced into copper simple substances on the cathode side, thereby forming a complete discharge loop.
The invention increases the specific surface area of the electrode: the foam metal porous medium electrode has a large specific surface area, the battery performance is favorably improved, and meanwhile, the three-dimensional electrode structure is easy to meet the amplification requirement of the electrochemical reaction system in the future.
The invention reduces the internal resistance of the battery: the anion exchange membrane which is larger than the anode electrode of the printed electronic circuit board is adopted, and the compact flat plate type structure enables the anode, the anion exchange membrane and the cathode electrode of the printed electronic circuit board to be tightly connected, so that the internal resistance of the battery is smaller, and the simple and compact flat plate type structure is beneficial to simultaneously processing more circuit boards in the future.
The heat regeneration ammonia battery formed by utilizing the waste printed electronic circuit board and the processing method have the beneficial effects that: the invention connects all copper-clad wires on the printed electronic circuit board through the external short circuit line, so that the whole circuit board forms a conductive whole to form the anode.
Drawings
FIG. 1 is a schematic view showing the structure of a thermally regenerated ammonia cell according to the present invention, which is constructed by using a waste printed circuit board.
Fig. 2 is a schematic structural view of the waste printed electronic circuit board of the present invention after pretreatment.
FIG. 3 is a graph showing the power generation performance of the heat-regenerating ammonia battery constructed in example 1.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Referring to fig. 1 and 2, example 1: a thermal regeneration ammonia battery formed by using a waste printed electronic circuit board comprises a cathode chamber 7, an anion exchange membrane 3 and an anode chamber 8, wherein a cathode electrolyte of a cathode foamy copper electrode 1 is arranged in the cathode chamber 7, and an anode electrode 2 and an anode electrolyte are arranged in the anode chamber 8; the anode electrode 2 is composed of a waste printed electronic circuit board 11, a plurality of copper-clad wires are arranged on the waste printed electronic circuit board, green oil on the upper surfaces of all the copper-clad wires is removed, the exposed copper-clad wires 12 are communicated through an external short-circuit line 13, and the copper wire of one exposed copper-clad wire and the other exposed copper-clad wire can be connected in series through the external short-circuit line 13 or can be connected in parallel; then a 40-mesh stainless steel screen is used for wrapping the circuit board exposed out of the copper wire, and finally the anode electrode 2 is formed; meanwhile, one or more copper-clad wires are connected with one end of an external load 4 through a flow deflector 14, and the other end of the external load 4 is connected with the cathode foam copper electrode 1.
The catholyte is a mixed solution of copper sulfate and ammonium sulfate, and the anolyte is an ammonium sulfate solution. The voltage and current of the external load 4 are collected by the data collector 5 and output to the computer 6 for displaying data. The battery power generation performance is shown in fig. 3.
A cathode side end plate 9 and an anode side end plate 10 are provided outside the cathode chamber 7 and the anode chamber 8, respectively.
The external resistor 4 is a direct current resistance box with a resistance value range of 0-1111111.10 omega, a minimum progress value of 0.01 omega and a precision of 0.1 percent, and a cathode electrode and an anode electrode are connected with the outer side of the battery through leads; a cathode side end plate 9 and an anode side end plate 10 are used to hold the cathode and anode electrodes and the cathode and anode chambers.
first, preprocessing a waste printed electronic circuit board 11: soaking the printed electronic circuit board in a dissolving agent capable of removing the green oil on the surface of the copper-clad wire to remove the green oil on the surface of the copper-clad wire and expose the copper wire on the printed electronic circuit board; the series connection or the parallel connection can be adopted.
Secondly, establishing a heat regeneration ammonia battery: the thermal regeneration ammonia battery comprises an anode chamber 8, an anion exchange membrane 3 and a cathode chamber 7, wherein the cathode chamber and the anode chamber are respectively provided with a catholyte input/output hole and an anolyte input/output hole.
Thirdly, all the copper-clad wires on the treated waste printed electronic circuit board 11 are communicated through an external short-circuit line 13, and the copper wire of one exposed copper-clad wire and the other exposed copper-clad wire can be connected in series through the external short-circuit line 13 or can be connected in parallel; then a 40-mesh stainless steel screen is used for wrapping the circuit board exposed by the copper wires to finally form an anode electrode 2, one or more copper-clad wires on the printed electronic circuit board are connected with one end of an external load 4 through a flow deflector 14, and the other end of the external load 4 is connected with a cathode foamy copper electrode 1; placing the anode electrode 2 in the anode chamber 8; a cathode copper foam electrode 1 is placed in the cathode chamber.
Fourthly, adding the catholyte and the anolyte into the cathode chamber and the anode chamber through a catholyte input and output hole and an anolyte input and output hole respectively; and ammonia water is added into the cathode chamber 7 or ammonia gas is blown into the cathode chamber, copper-clad wires on the printed electronic circuit board are corroded by the ammonia water to generate complex reaction, and electrons and copper tetraammine ions are generated. The generated electrons are transferred to the cathode through an external circuit, combined with copper ions in the catholyte and deposited on the surface of the cathode electrode, and anions in the catholyte and the anolyte migrate through the anion exchange membrane 3 to form stable current; and when the copper-clad wire on the printed electronic circuit board is corroded, the reaction is finished, and the battery stops working.
Fifth, the method comprises the following steps: and introducing the reacted anolyte into a distillation tower, distilling out ammonia gas and a mixed solution of copper sulfate and ammonium sulfate, continuously introducing the mixed solution into a cathode chamber of the thermal regeneration ammonia battery to be used as catholyte, and introducing the separated ammonia gas into an anode chamber of the battery to be used as a reactant to participate in the reaction in the anode again.
The catholyte is a mixed solution of copper sulfate and ammonium sulfate, and the anolyte is ammonium sulfate.
A cathode side end plate 9 and an anode side end plate 10 are provided outside the cathode chamber 7 and the anode chamber 8, respectively.
The external resistor 4 is a direct current resistance box with a resistance value range of 0-1111111.10 omega, a minimum progress value of 0.01 omega and a precision of 0.1 percent, and a cathode electrode and an anode electrode are connected with the outer side of the battery through leads; a cathode side end plate 9 and an anode side end plate 10 are used to hold the cathode and anode electrodes and the cathode and anode chambers.
The middle of the invention is separated by anion exchange membrane AEM. The cathode and the anode respectively adopt a foam copper electrode and a pretreated printed circuit board electrode, and the cathode supporting electrolyte is Cu (SO)4)2And (NH)4)2SO4The mixed solution of (2) and (NH) as the anode supporting electrolyte4)2SO4。
When ammonia water is added into the anode or ammonia gas is blown into the anode, the anode of the printed electronic circuit board is corroded by the ammonia water to generate complexationElectrons and tetraammine copper ions should be generated. The generated electrons are transferred to the cathode and Cu in the catholyte through an external circuit2+Combined, and deposited on the surface of the cathode electrode. Anions in the cathode electrolyte and the anode electrolyte are transferred through AEM to form ionic current, so that the integrity of a circuit is ensured, and meanwhile, the solution in the battery keeps neutral. The reactions occurring at the cathode and anode are as follows:
and (3) anode reaction:
Cu(s)+4NH3(aq)—Cu(NH3)4 2+(aq)+2e-
E0＝-0.040V
and (3) cathode reaction:
Cu2+(aq)+2e-—Cu(s)
E0＝+0.340V
therefore, under the standard working condition, a theoretical potential difference of about 0.380V is generated between the cathode and the anode, and the directional movement of electrons in an external circuit forms current. The battery has good continuity, and the battery can stop working only when the copper on the anode of the printed electronic circuit board is consumed almost under the precondition that the ammonia in the anolyte and the copper ions in the catholyte are sufficient. In the reaction process, ammonia in the anolyte is gradually consumed to reduce the concentration, the concentration of the copper tetraammine ions is continuously increased, and Cu in the catholyte2+The concentration is continuously reduced, the generated copper simple substance is attached to the surface of a cathode foam copper electrode, then, the reacted anolyte is introduced into a distillation tower, ammonia gas and mixed solution of copper sulfate and ammonium sulfate are separated by low-temperature waste heat distillation, the mixed solution is introduced into a cathode cavity of a thermal regeneration ammonia battery to be used as catholyte, and the ammonia gas is introduced into an anode cavity to participate in anode reaction. Therefore, the recycling of ammonia gas is formed, and the copper in the circuit board is recovered and purified. When the method is adopted, the dissolution rate of copper on the copper-clad wire of the anode circuit board electrode can reach more than 90 percent, the efficiency of converting copper ions in the cathode electrolyte into copper simple substances to deposit on the cathode electrode can reach about 85 percent, and the recovery rate of copper in the electronic circuit board to be reduced and deposited on the cathode electrode can reach 70 percent by single battery discharge.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A thermal regeneration ammonia battery formed by using a waste printed electronic circuit board comprises a cathode chamber (7), an anion exchange membrane (3) and an anode chamber (8), wherein a cathode foamed copper electrode (1) and a cathode electrolyte are arranged in the cathode chamber (7), and an anode electrode (2) and an anode electrolyte are arranged in the anode chamber (8); the method is characterized in that: the anode electrode (2) is composed of a waste printed electronic circuit board, and green oil on the upper surface of all copper-clad wires on the printed electronic circuit board is removed so as to expose copper wires on the printed electronic circuit board; all copper-clad wires on the printed electronic circuit board are communicated through an external short circuit line, so that the whole circuit board forms a conductive whole to form an anode; meanwhile, one or more copper-coated wires are connected with one end of an external load (4) through a flow deflector, and the other end of the external load (4) is connected with the cathode foam copper electrode (1).
2. The thermally regenerative ammonia battery using waste printed electronic circuit boards as claimed in claim 1, wherein: the catholyte is a mixed solution of copper sulfate and ammonium sulfate, and the anolyte is ammonium sulfate.
3. The thermally regenerative ammonia battery using waste printed electronic circuit boards as claimed in claim 1, wherein: a cathode side end plate (9) and an anode side end plate (10) are respectively arranged on the outer sides of the cathode chamber (7) and the anode chamber (8).
4. The method for treating the waste printed electronic circuit board by utilizing the heat regeneration ammonia battery is characterized by comprising the following steps of: the method comprises the following steps:
firstly, preprocessing a waste printed electronic circuit board: connecting all copper-clad wires on the waste printed electronic circuit board through an external short circuit line; soaking the printed electronic circuit board in a dissolving agent capable of removing the green oil on the surface of the copper-clad wire to remove the green oil on the surface of the copper-clad wire and expose the copper wire on the printed electronic circuit board;
secondly, establishing a heat regeneration ammonia battery: the thermal regeneration ammonia battery comprises an anode chamber, an anion exchange membrane and a cathode chamber, wherein the cathode chamber and the anode chamber are respectively provided with a cathode electrolyte input and output hole and an anode electrolyte input and output hole;
thirdly, placing the pretreated printed electronic circuit board in an anode chamber (8); one or more copper-coated wires on the printed electronic circuit board are connected with one end of an external load (4) through a flow deflector, and the other end of the external load (4) is connected with a cathode foam copper electrode (1); the cathode foam copper electrode (1) is placed in the cathode chamber;
fourthly, adding the catholyte and the anolyte into the cathode chamber and the anode chamber through a catholyte input and output hole and an anolyte input and output hole respectively; ammonia water is added into the cathode chamber (7) or ammonia gas is blown into the cathode chamber, copper-clad wires on the printed electronic circuit board are corroded by the ammonia water to generate a complex reaction, and electrons and copper tetraammide ions are generated; the generated electrons are transferred to the cathode through an external circuit, combined with copper ions in the catholyte and deposited on the surface of the cathode electrode, and anions in the catholyte and the anolyte migrate through the anion exchange membrane (3) to form stable current; and when the copper-clad wire on the printed electronic circuit board is corroded, the reaction is finished, and the battery stops working.
5. The method of treating waste printed electronic circuit boards with thermally regenerated ammonia batteries as claimed in claim 4, wherein: the catholyte is a mixed solution of copper sulfate and ammonium sulfate, and the anolyte is ammonium sulfate.
6. The method for treating the waste printed electronic circuit board using the heat regenerative ammonia battery according to claim 5, wherein: the method further comprises the following steps:
fifth, the method comprises the following steps: and introducing the reacted anolyte into a distillation tower, distilling out ammonia gas and a mixed solution of copper sulfate and ammonium sulfate, continuously introducing the mixed solution into a cathode chamber of the thermal regeneration ammonia battery to be used as catholyte, and introducing the separated ammonia gas into an anode chamber of the battery to be used as a reactant to participate in the reaction in the anode again.
7. The method for treating the waste printed electronic circuit board using the thermally regenerated ammonia battery as set forth in claim 4 or 5 or 6, wherein: a cathode side end plate (9) and an anode side end plate (10) are respectively arranged on the outer sides of the cathode chamber (7) and the anode chamber (8).
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| CN103388160B (en) * | 2013-07-19 | 2016-05-25 | 北京科技大学 | Method by the molten copper-electro-deposition of waste printed circuit board coupling legal system for superfine cupper powder |
| WO2016057894A1 (en) * | 2014-10-10 | 2016-04-14 | The Penn State Research Foundation | Ammonia-based thermoelectrochemical systems and methods |
| CN104388987A (en) * | 2014-12-01 | 2015-03-04 | 西南科技大学 | Method for preparing copper powder from metal powder of waste printed circuit boards by means of electrolysis |
| JP2017027918A (en) * | 2015-07-28 | 2017-02-02 | 東洋紡株式会社 | Electrode material for redox flow battery |
| CN105762396B (en) * | 2016-03-03 | 2018-03-23 | 重庆大学 | A kind of flat hot recycling ammonia battery using foam metal electrode |
| CN106711487A (en) * | 2017-03-31 | 2017-05-24 | 重庆大学 | Film-free heat regenerative ammonia cell and manufacturing method |
| CN108183253B (en) * | 2017-12-27 | 2020-09-01 | 重庆大学 | Thermal regeneration ammonia battery with ammonia gas self-breathing structure and preparation method |
| CN109022795B (en) * | 2018-07-24 | 2019-12-31 | 上海第二工业大学 | Method for removing components on waste printed circuit board by alkaline electrochemistry and special device thereof |
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| CN102292415A (en) * | 2008-11-25 | 2011-12-21 | 文策尔·伯格曼 | Method for producing synthesis gas and/or liquid raw materials and/or energy storage media from waste and/or biomass |
| CN109160884A (en) * | 2018-07-26 | 2019-01-08 | 昆明理工大学 | The recovery method of copper ion and application in a kind of acid copper printed plate board etching waste liquor |
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