The sample used in the study was supplied by a local recycling center in Rio de Janeiro, Brazil. Therefore, the present manuscript studies such alternative based on scanning electron microscopy characterization. Regarding pyrometallurgy, little is known about the low-temperature processing applied before fragmentation and subsequent component separation. Recently, it was observed that many extractive metallurgy alternatives had been considered to recover value from this type of waste. The production of electronic waste due to technological development, economic growth and increasing population has been rising fast, pushing for solutions before the environmental pressure achieves unprecedented levels.
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Issues are regarded as officially published after their release is announced to the table of contents alert mailing list.Here, we have summarized the principal mechanisms used to enhance the conversion efficiency of these materials, including energy filtering, modulation doping, phonon scattering, and magnetic effects. Recently, multiphase thermoelectric materials have offered higher conversion efficiencies than single-phase counterparts, providing exciting prospects to exploit the effects of secondary phases to improve the power factor and thermal conductivity of these compounds. Thermoelectric generators, which directly convert thermal energy to electricity and vice versa, have attracted a great deal of interest due to their applications in waste heat recovery and highly efficient cooling of next-generation integrated circuits.
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