Efficient separation and recovery of valuable gallium and indium …
Considering gallium-based liquid metal (G-LM) waste as a kind of hazardous waste, it may pose a serious threat to the surrounding environment and human health if it improperly disposed.Meanwhile, gallium and indium are its main metal elements with high recovery value. Here, a scheme for the acid-leaching resin separation and purification of Ga and In was …
Selective isolation of gallium and indium from waste …
With the expanded installation and decommission of photovoltaic modules, the recovery of critical metals involved, such as gallium (Ga) and indium (In), is becoming an important issue. Liquid–liquid extraction, as a conventional recovery method, is always accompanied by serious emulsification, poor phase-separation, and huge volatile organic ...
Sorbent selection for the recovery of gallium and indium …
Sorption experiments with both metals in solution showed a competitive effect between gallium and indium for the sorption sites of the chabazite, showing more affinity …
(PDF) Recovery of Indium and Gallium from Spent IGZO …
The remaining mixture consisted of 96.1% gallium and 0.2% indium; hence, the recovery rate of gallium was 96.1% and its purity was 99.6%, calculated by dividing the weight of gallium by the weight of the mixture.
Recovery of indium by solvent extraction with crown ether …
Indium is located in the IIIA column of the periodic table of elements, initially discovered by Reich and Richter in 1863 in sphalerite ores (Alfantazi and Moskalyk, 2003).Indium and its compounds are widely used in a variety of industrial fields such as coatings, electrical components, semiconductors, and solders in the forms of indium metal, alloys and indium tin oxide (ITO), …
Sorbent selection for the recovery of gallium and indium
Gallium and indium, metals present in light-emitting diode (LED) lighting technology, can be effectively recovered from aqueous solutions by sorption. For this purpose, carbonaceous materials, such as activated carbon, or low-cost biosorbents as beer bagasse, spent coffee grounds or peanut shells, and a low-cost zeolite as chabazite, were characterized …
High-yield recycling and recovery of copper, indium, and gallium …
The recovery rates of indium and gallium were 97.74% and 97.41%, respectively. Lastly, 99.83% of the copper in the filtrate was recovered via solvent extraction. The selective separation and ...
Recovery method for copper-indium-gallium-selenium …
Provided is a recovery method for a copper-indium-gallium-selenium material, mainly comprising the steps of sulfuric acid aeration leaching at a high temperature, reducing selenium with sodium sulfite, separating copper by extracting, separating indium and gallium with an alkali, replacing indium, electrolyzing gallium, etc. In the recovery method for a copper …
Metal recovery from copper indium gallium selenide solar …
The purities of gallium, indium and copper in the recovery product produced by thermal chlorination at different temperatures are shown in Fig. 6. At the heating temperature of 300 °C, the purity of gallium was only 67.21 %. At 340 °C, the recovery rates of gallium and indium were 95.73 % and 45.78 %, respectively (Fig. 5). However, because ...
A review of the current progress in recycling technologies for gallium
Gu et al. [127] developed a recycling process to recover gallium, indium, and zinc from a semiconductor material (indium, gallium, zinc oxide - IGZO) used in flat panel displays. It is important to highlight that IGZO material is the new thin-film transistor used in organic light-emitting devices (OLED). The process proposed consists of acid ...
Mechanism of positive bias stress-assisted recovery in amorphous-indium
Mechanism of positive bias stress-assisted recovery in amorphous-indium-gallium-zinc-oxide thin-film transistors from negative bias under illumination stress Jae Gwang Um; Jae Gwang Um Department of Information Display, Kyung Hee University, Advanced Display Research Center
CN103184338A
The invention provides a recovery method of a copper indium gallium selenide thin-film solar panel. The method comprises the steps that: the copper indium gallium selenide thin-film solar panel is crushed into pieces; the pieces are soaked by using a H2SO4+H2O2 system, such that a soaking liquid is obtained; the soaking liquid is filtered, such that a first leachate is obtained; …
Clean and efficient recovery of gallium–indium alloy from …
The leaching of semiconductors (GaN, GaAs and InAs) and LEDs in a nonvolatile tribromide ionic liquid and the selective recovery of gallium, indium and arsenic from this …
High-yield recycling and recovery of copper, indium, and gallium …
High-yield recycling and recovery of copper, indium, and gallium from waste copper indium gallium selenide thin-film solar panels. Author links open overlay panel Fan-Wei Liu a b 1, Tzu-Min Cheng a ... respectively, in copper indium gallium sulfur selenide, which is a common compound used in CIGS-based commercial solar cell products [[42], [43 ...
Indium Gallium Recovery
The recovery of indium, gallium, and germanium from EoL products primarily involves hydrometallurgical and biohydrometallurgical methods, which outcompete pyrometallurgical approaches in terms of performance. A review of the current progress in …
Recovery of Gallium, Indium, and Arsenic from …
Leaching of semiconductors (GaN, GaAs, and InAs) and light-emitting diodes (LEDs) in a nonvolatile tribromide ionic liquid, and the selective recovery of gallium, indium, and arsenic from this ionic liquid were …
Recovery of gallium (and indium) from spent LEDs: Strong …
This study carried out the adapted pre-treatment and characterization of spent surface mounted device (SMD) light emitting diodes (LEDs) followed by the recovery of gallium (Ga) and indium (In) by strong acids leaching and selective leaching with desferrioxamine E (DFOE). The pre-treated spent SMD LED powder fraction (<500 μm) contained the highest …
(PDF) Recycling and recovery of spent copper—indium—gallium…
Copper—indium—gallium—diselenide (CIGS) is a fast-evolving commercial solar cell. The firm demand for global carbon reduction and the rise of potential environmental threats necessitate ...
Separation and Recovery of Gallium and Indium from …
The separation and recovery of gallium and indium from zinc refinery residue, using liquid−liquid extraction, has been investigated. The major components with the exception of zinc can be removed by extraction with tri-n-butyl phosphate at low aqueous acidity, and gallium and indium can be separated from the remaining major component, zinc, by extraction with …
Recovery of Gallium, Indium and Arsenic from …
GaN, GaAs and InAs in tribromide ILs and the selective recovery of gallium, indium and arsenic from this IL are investigated. Most experiments are carried out with the ionic liquid tributyldecylphosphonium bromide, [P 44410][Br 3]. Besides the pure semiconductor compounds, real LEDs are investigated as well.
Recovery of Gallium, Indium, and Arsenic from …
Leaching of semiconductors (GaN, GaAs, and InAs) and light-emitting diodes (LEDs) in a nonvolatile tribromide ionic liquid, and the selective recovery of gallium, indium, and arsenic from this ionic liquid were investigated. To prevent the formation of the highly toxic arsine (AsH3), usually formed when leaching metal arsenides with acids, the hydrophobic trihalide …
Clean and efficient recovery of gallium–indium alloy from gallium …
The leaching of semiconductors (GaN, GaAs and InAs) and LEDs in a nonvolatile tribromide ionic liquid and the selective recovery of gallium, indium and arsenic from this ionic liquid was investigated.
Mechanism of positive bias stress-assisted recovery in …
We have analyzed the effect of applying positive bias stress (PBS) to amorphous-indium-gallium-zinc-oxide (a-IGZO) thin-film transistors (TFTs) immediately after applying …
Separations and recovery of indium and gallium using …
There are no primary sources of indium and gallium. Indium is generally found in low concentrations in some sulfide ores of zinc, copper and lead, from which it is obtained as a by-product. Gallium is mostly associated with aluminum, zinc, and germanium. Both metals are extensively used in the manufacture of semiconductor devices.
Method for recovery of copper, indium, gallium, and selenium
A method for the recovery of copper, indium, gallium, and selenium is provided. The method includes steps of using a mixed solution containing a hydrochloric acid and hydrogen peroxide to dissolve the copper, indium, gallium, and selenium. After using the hydrazine to separate the selenium out, the copper is reduced by indium metal. Later, a combination of a supported …
Indium Recovery
INDIUM: Indium recovery, the extraction of indium metal from various indium-contained products or processes, re-introduces over 50% of the indium volume used per year. ... Indium Compounds; Gallium Compounds; Germanium Compounds; 3D EZ Release™ Print Plate; Metals. Bar Solder; Indium;
Indium Recycling: Recovering a Vital Resource for the Future …
Indium is a critical element in today's technological landscape. It plays a vital role in various applications, from flat-panel displays and touchscreens to solar panels and semiconductors. However, indium is a finite resource, and with the ever-increasing demand for these technologies, responsible recycling becomes essential.The Importance of IndiumIndium is a …
Recycling of Spent Indium–Gallium–Zinc Oxide …
A facile electrochemical method was used for the first-time recovery of an In–Ga–Zn alloy from a spent indium–gallium–zinc oxide (IGZO). In this work, the molar ratio of In, Ga, and Zn in the alloy is almost the same as …
Efficient separation and recovery of valuable gallium and …
The method of separating and recovering gallium and indium with CL-P204 extraction resin has the characteristics of high recovery rate, less pollution, simple operation …
Clean and efficient recovery of gallium–indium alloy from …
First, low-temperature vacuum distillation was used to recover 98.23 % of Zn under optimal conditions (1–5 Pa; 773 K; 60 min). Then, the Ga–In alloy was recovered through high …