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Figure from:Green Processes for Electronic Waste Recycling: A Review

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Table 1 Physical processes for the E-waste recycling

Table 1 Physical processes for the E-waste recycling

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Thermal treatment of e-waste is carried out by either incineration or pyrolysis. Incineration is a method of throwing out waste by burning it [42]. It usually acts as an
Thermal treatment of e-waste is carried out by either incineration or pyrolysis. Incineration is a method of throwing out waste by burning it [42]. It usually acts as an
Fig. 1 Different categories of E-waste (color figure online) Landfill Disposal E-Waste Composition and Characteristics
Fig. 1 Different categories of E-waste (color figure online) Landfill Disposal E-Waste Composition and Characteristics
proper process depends on type of the material, its metal content, and volume. However, to extract valuables from E-waste, it must endure a basic process including collec- tion, breaking, and detaching, pretreatment, and final metal recovery as revealed in Fig. 3.
proper process depends on type of the material, its metal content, and volume. However, to extract valuables from E-waste, it must endure a basic process including collec- tion, breaking, and detaching, pretreatment, and final metal recovery as revealed in Fig. 3.
Table 2 Summary of green hydrometallurgical processes for the recovery of metals from E-waste
Table 2 Summary of green hydrometallurgical processes for the recovery of metals from E-waste
Table 2 (continued)
Table 2 (continued)
Table 3 The most used microorganisms for bioleaching E-waste indium under high-temperature condition by reducing atmosphere. The processing conditions were 1223 K and 1 Pa with 30 wt% carbon additions for 30 min. and the recovery rate of indium reached 90 wt%. Indium was also recovered from wasted LCD panels by chlorinated vac- uum-separation method [150]. In this method, a chlori- nating agent, ammonium chloride (NH4Cl), was used at temperature of 400 °C. The weight ratio of the used NH, Cl-to-glass powder was 1:2, and the optimal particle size was less than 0.13 mm. Purity of the recovered indium chloride reached 99.50%, and its recovery rate attained 98.02%. tmosphere. The processing conditions were 1223 K and
Table 3 The most used microorganisms for bioleaching E-waste indium under high-temperature condition by reducing atmosphere. The processing conditions were 1223 K and 1 Pa with 30 wt% carbon additions for 30 min. and the recovery rate of indium reached 90 wt%. Indium was also recovered from wasted LCD panels by chlorinated vac- uum-separation method [150]. In this method, a chlori- nating agent, ammonium chloride (NH4Cl), was used at temperature of 400 °C. The weight ratio of the used NH, Cl-to-glass powder was 1:2, and the optimal particle size was less than 0.13 mm. Purity of the recovered indium chloride reached 99.50%, and its recovery rate attained 98.02%. tmosphere. The processing conditions were 1223 K and