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Table 4 Comparison of leaching efficiency, conditions and capacity in bioleaching of copper from PCBs

From: Bioleaching of copper from waste printed circuit boards by bacteria-free cultural supernatant of iron–sulfur-oxidizing bacteria

References Leaching efficiency (%) Conditions Capacity (gCu/L h)
Zhu et al. (2011) 96.8 12 g/L PCBs concentrates with 83.8% copper in 45 h 0.2235
Yang et al. (2009) 98.59 15 g/L PCBs with 25.06% copper in 24 h 0.1566
Nie et al. (2015) 96 12 g/L PCBs concentrates with 63.37% copper in 7 days 0.0452
Xiang et al. (2010) 95 20 g/L PCBs with 23.10% copper in 5 days 0.0385
Rodrigues et al. (2015) 85 25 g/L PCBs with 28.50% copper in 8 days 0.0371
Wang et al. (2009) 99.9 7.8 g/L PCBs with 37.10% copper in 9 days 0.0111
Current work 93.4 100 g/L PCBs concentrates with 65.0% copper in 9 days 0.3006