Recovery of solar grade silicon from kerf loss slurry waste

Drouiche, Nadjib; Cuellar, Patricia; Kerkar, F.; Medjahed, Sidali; Boutouchent-Guerfi, N.; Hamou, Malek Ould

doi:10.1016/j.rser.2014.01.059

Cited by 87 publications

(43 citation statements)

References 21 publications

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“…Availability of higher grade polysilicon feedstock has been a challenge in the industry. Recently, silicon recovered from the kerf loss slurry waste has attracted incessant attention . Silicon obtained from kerf loss slurry can be a potential candidate as an anode for Li‐ion battery.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Lithium Phosphorus Oxynitride Protective Layer Thickness on Low‐Grade Composite Si‐Based Anodes for Lithium‐Ion Batteries

et al. 2018

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Composite materials containing Si as a component, are growing importance in the field of Li‐ion battery due to their extremely high theoretical capacity (3500 mAh g−1 at room temperature). However, the capacity of Si anode material decays dramatically because of serious volume variation during lithiation and delithiation process, which lead to deformation of Si electrode and resulted in poor cycle performance. In the present work, we have reported improved performance of modified Si electrode as an anode in Li‐ion battery. Si obtained from kerf‐loss slurry have been alloyed with Ni nanoparticles to improve its conductivity. A mechanistic study of the deposition of LiPON with respect to deposition pressure also presented. It is seen that LiPON layer serves as a protective layer with high ionic conductivity (1.38×10−6 S cm−1) to improve the electrochemical activity of Si−Ni electrode. The optimal 1st charge capacity of LiPON modified‐ Si−Ni composite was 915 mAh g−1 at a current density of 50 mA g−1 in a potential window of 1.2 V to 0.005 V. The charge capacity retained 56.2% of the initial cycle after 90th cycling measurement.

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Section: Introductionmentioning

confidence: 99%

Optimizing the Lithium Phosphorus Oxynitride Protective Layer Thickness on Low‐Grade Composite Si‐Based Anodes for Lithium‐Ion Batteries

et al. 2018

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“…As the rapid development of the photovoltaic solar cell industry with an expected annual growth ratio of 20% (Dong et al, 2011), there is a dramatically increasing demand for the solar-grade silicon, which is a dominant material for the photovoltaic solar cell (Drouiche et al, 2014;Sarti and Einhaus, 2002). The silicon wafers are produced from silicon ingots by a multi-wire slicing technology with silicon carbides as an abrasive and glycol-based solutions as a suspension agent (Möller, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Many methods have been proposed to separate silicon from Si/ SiC mixtures (Drouiche et al, 2014;Li et al, 2011), which include filtration (Zhang and Ciftja, 2008), centrifugation Liu et al, 2013), phase-transfer separation (Hsu et al, 2014;Xing et al, 2013), electrophoresis and gravitational setting (Tsai, 2011;Wu and Chen, 2009), pH adjustment (Huang Contents (Tomono et al, 2013), micropore membrane (Liu et al, 2014), flotation (Huang et al, 2010;Shibata et al, 2006), high temperature treatment (Wang et al, 2008) and supercritical water (Yoko and Oshima, 2013). These approaches can increase silicon content in the slurry to 90 wt%.…”

Section: Introductionmentioning

confidence: 99%

Phase separation of a microsized powder mixture of Si and SiC by Cu–Si alloying

Huang

Zhu

2015

Chemical Engineering Science

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“…During this cutting operation, kerf-loss silicon (Si) and metal fragments from the cutting wire are incorporated into the slurry, resulting in a large amount of waste [1]. This silicon cutting waste is usually disposed off by incineration or treated by a wastewater treatment facility, causing a non-negligible environmental impact [2].…”

Section: Introductionmentioning

confidence: 99%

Recovery of polyalkylene glycol from silicon cutting waste using centrifugation

Tsai

Shih

2014

Desalination and Water Treatment

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A great amount of slurry waste is formed during the cutting process from silicon ingot to wafers. More than 50% of this waste comes from cutting liquids. This study investigated centrifugation to recover polyalkylene glycol (PAG) cutting liquid with low turbidity (<100 NTU). The experimental results show that clean PAG liquids could be obtained by using water as a diluent. Because water with high chemical polarity and strong hydrogen bonding would destroy the adsorption of PAG molecules on particles, and weaken the steric stabilization, the particles are aggregated and then separated from liquids by centrifugation. After 50 wt.% water-assisted centrifugation at 3,253 G-force for 24 h, the solid content of the upper liquid decreased to 0.018 g/L, and the turbidity reduced to 7.2 nephelometric turbidity units (NTU). The obtained liquid was then vacuum distillated to remove water. The final recovered PAG with only 0.43 NTU could be reused in the cutting process.

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Recovery of solar grade silicon from kerf loss slurry waste

Cited by 87 publications

References 21 publications

Optimizing the Lithium Phosphorus Oxynitride Protective Layer Thickness on Low‐Grade Composite Si‐Based Anodes for Lithium‐Ion Batteries

Optimizing the Lithium Phosphorus Oxynitride Protective Layer Thickness on Low‐Grade Composite Si‐Based Anodes for Lithium‐Ion Batteries

Phase separation of a microsized powder mixture of Si and SiC by Cu–Si alloying

Recovery of polyalkylene glycol from silicon cutting waste using centrifugation

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