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Table 1 Screening for a potent heavy metal removal bacterium able to resist different metal concentrations, expressed in parts per million

From: Heavy metal removal using a fixed bed bioreactor packed with a solid supporter

Heavy metal

Bacterial code

Heavy metal concentration (ppm)

10

50

100

Co2+

1

R

R

R

2

S

S

S

3

R

R

R

4

R

R

R

Mn2+

1

S

S

S

2

S

S

S

3

R

R

R

4

Var

Var

Var

Cu2+

1

R

R

R

2

S

S

S

3

R

R

S

4

S

S

S

Cd2+

1

R

R

S

2

S

S

S

3

R

S

S

4

R

R

S

Ni2+

1

R

R

R

2

S

S

S

3

R

R

S

4

R

R

R

Zn2+

1

R

R

R

2

S

S

S

3

R

R

R

4

R

R

R

Pb2+

1

R

R

R

2

S

S

S

3

R

R

S

4

R

R

S

Fe+3

1

R

R

R

2

S

S

S

3

R

R

R

4

R+

R+

R+

  1. R the bacterium was able to resist the tested metal concentration, S the bacterium was unable to resist the tested metal concentration, Var. moderate bacterial resistance, R+ high resistance towards the tested metal concentration