Hidden values in kerf slurry waste recovery of high purity silicon

Drouiche, Nadjib; Cuellar, Patricia; Kerkar, F.; Medjahed, Sidali; Ouslimane, Tarik; Hamou, Malek Ould

doi:10.1016/j.rser.2015.07.114

Cited by 50 publications

(16 citation statements)

References 17 publications

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“…Since the Middle Ages people have used the tidal water farms; nevertheless, tidal power engineering has not received wide development and is still represented by several experimental power plants. The largest tidal power plant in the world is the French Rance with a capacity of 240 MW that was launched in 1966 [13,14]. Other examples of such plants in operation are the Annapolis in Canada with a capacity of 20 MW, Jiangxia in China with a capacity of 3.2 MW and Uldolmok in South Korea.…”

Section: Global Trends In Renewable Energy Deploymentmentioning

confidence: 99%

The role of science, technology and innovation in increasing the share of renewable energy worldwide

Tarasova

2021

E3S Web Conf.

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A number of countries in the emerging markets are becoming leaders in manufacturing solar photovoltaic products. Thus, global companies are urged to compete in all stages of the supply chain for producing most of the installed solar modules around the world. Meanwhile, production costs are at record lows. The decisions made in the emerging markets will affect the course for the solar and wind industry and their role towards de-carbonization of global energy systems in the near future. Renewable energy is set of miscellaneous natural resources, which preserves non-renewable sources for further use in other sectors of the economy, and saves green energy for future eras. The way a country employs its potential in renewables will safeguard the country’s energy security and the stability of electricity prices. Renewable energy is eco-friendly, as its operation does not produce any waste, or discharge pollutants into the atmosphere or water bodies. Our paper discusses the latest achievements of various scientific areas and industries, as well as it lists specific recommendations for national sustainable actions plans. These recommendations might be useful for policy-makers, working in adopting the transformation of their country’s energy systems.

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Section: Global Trends In Renewable Energy Deploymentmentioning

confidence: 99%

The role of science, technology and innovation in increasing the share of renewable energy worldwide

Tarasova

2021

E3S Web Conf.

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“…PCW is a by‐product of silicon wafer slicing for solar cell fabrication, and primarily consists of 40.0–61.5% Si and 20.5–27.5% SiC and is only a quarter of the price of metal silicon. [ 18,19 ] Therefore, when PCW is used as a reductant for the prereduction of vanadium slag, the process includes the advantages of carbothermal and silicothermic reduction, [ 20 ] and is a promising method to solve the abovementioned problems. In addition, the viscosity of the slag influences the kinetic conditions [ 21,22 ] and the separation of hot metal.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Viscosity and Structure Property of Vanadium Slag during Iron‐Extracting Reduction Process

Zhang

Chen

Wang

et al. 2020

steel research int.

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Photovoltaic cutting waste (PCW) is a promising prereductant to enrich vanadium and to extract iron present in vanadium slag. To understand the kinetic conditions during the reduction and separation of Fe from vanadium slag when using PCW as a reductant, the evolution of the viscosity with decreasing FeO contents is measured. The composition and structure of the melt are analyzed using X‐ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectroscopy. The results show that the slag comprises a solid–liquid mixture system during the entire prereduction at 1873 K. At this temperature, as the FeO/SiO2 mass ratio decreases from 2.18 to 0.30, the solid–liquid ratio of the slag decreases from 21.5% to 1.9%, and the viscosity of the slag increases from 0.12 to 0.47 Pa s, indicating that the silicate structure of the melt significantly affects the slag viscosity, while the effect of the spinel phase is limited. The transition of the dominant silicate structure from FeO to SiO2 results in a significant decrease in the amount of the simple unit Q0 as well as the occurrence of the more complex structural unit Q3, suggesting a significant enhancement of the degree of polymerization in the vanadium slag.

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“…In general, Si sludge from single-crystal ingot is consisted of kerf-loss crystalline Si and some impurities like lubricant oil and metal debris from the wire saw. When the sludge is recycled the impurities need to be removed through complex and expensive procedures 3,4 . To reduce such loss of Si, several studies have tried to recycle Si from the sludge 3–9 .…”

Section: Introductionmentioning

confidence: 99%

Possibility of Recycling SiOx Particles Collected at Silicon Ingot Production Process as an Anode Material for Lithium Ion Batteries

Kim

Yang

et al. 2019

Sci Rep

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Recently, some studies have utilized silicon (Si) as an anode material of lithium ion battery by recycling Si from the slurry of wafer slicing dust. The filtration of Si particles condensed from Si vapors that were exhausted from the ingot growing furnace could propose another method of Si recycling. In this study, we investigated the possibility of using such collected silicon oxides (SiOx) particles as an anode material. After collecting SiOx particles, FE-SEM, TEM, EDS, XRD, XPS analysis, and charge/discharge test were carried out to investigate characteristics and usability of these particles. FE-SEM and FE-TEM images showed that these particles mainly consisted of spherical primary particles with a diameter of 10 nm or less. Agglomerates of these primary particles were larger than 300 nm in diameter. In TEM image and EDS analysis, crystalline particles were observed along with amorphous particles. As a result of XRD analysis, amorphous silica (SiO2) and crystalline Si were observed. Charge/discharge tests were carried out to determine the feasibility of using these particles as an anode material for lithium ion batteries. A cycle efficiency of 40.6% was obtained in the test in which the total number of charge/discharge cycle was 100 under the condition of C-rate 0.2 for the first three times and C-rate 1.0 for the remaining 97 times. Results showed that these collected particles could be used as an anode material for lithium ion batteries.

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Hidden values in kerf slurry waste recovery of high purity silicon

Cited by 50 publications

References 17 publications

The role of science, technology and innovation in increasing the share of renewable energy worldwide

The role of science, technology and innovation in increasing the share of renewable energy worldwide

Evolution of Viscosity and Structure Property of Vanadium Slag during Iron‐Extracting Reduction Process

Possibility of Recycling SiOx Particles Collected at Silicon Ingot Production Process as an Anode Material for Lithium Ion Batteries

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