Correction to: Environmental Science and Pollution Research

https://doi.org/10.1007/s11356-018-3522-9

The original publication of this paper contains an error.

Correct presentation of Equation 1 is presented in this paper.

$$ \mathrm{ER}\left(\%\right)=\left(1-\frac{\mathrm{Average}\ {\mathrm{EMC}}_{\mathrm{outlet}}}{\mathrm{Average}\ {\mathrm{EMC}}_{\mathrm{inlet}}}\right)\times 100 $$
(1)

The original article has been corrected.