Metallurgical recovery of metals from electronic waste: A review

Kinetics of tetrabromobisphenol A (TBBPA) reactions with H2SO4, HNO3 and HCl: Implication for hydrometallurgy of electronic wastes

“…A linear regression of the natural logarithm of transformation rate constant of TBBPA (k 0 , obs ) and the reciprocal of absolute temperature, T, yielded an active energy (E a ) for the reaction of TBBPA in H 2 SO 4 . The E a value for the transformation of TBBPA in 80 wt% H 2 SO 4 was 22.2 kJ mol −1 (Supplementary data, Fig.…”

“…After mechanical/physical pretreatment, the fractions with non-ferrous metals and precious metals are further purified by pyrometallurgical and hydrometallurgical processes [3]. Hydrometallurgy presents several advantages for recovering precious metals over pyrometallurgy, such as higher recovery rate and lower capital cost [4][5][6], and it has been extensively applied for recovering precious metals from e-wastes in the past decade [6].…”

Synthesis of cuprous chloride and simultaneous recovery of Ag and Pd from waste printed circuit boards

“…Waste PCBs contain lots of valuable resources [6,7] together with plenty of hazardous materials [8,9], which are considered both an attractive secondary resource and an environmental contaminant [10]. Therefore, recycling of the Waste PCBs is an important subject not only from the treatment for waste but also from the recovery of valuable materials [1,11].…”

“…Copper and precious metals make up more than 95% of the value for waste PCBs [11,12]. Hence, recovery of those metals is the inherent motivity in waste PCBs disposal.…”

Synthesis and characterization of monoazathiacrown ethers as ionophores for polymeric membrane silver-selective electrodes

“…Their selectivities and coordination abilities with transition metal ions depend on ring cavity size, ligand rigidity, the nature of donor atoms and their disposition [10]. In recent years, many azathiacrown ethers have been synthesized and successfully utilized for highly selective binding with heavy metals in diversal processes such as ion transports through artificial and natural membranes, liquid-liquid phase-transfer reactions and isotope separations [11][12][13].…”