About the Authors

Tong Zhang

zhangt@hkucc.hku.hk

Affiliation Environmental Biotechnology Lab, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China

Xu-Xiang Zhang

Affiliation Environmental Biotechnology Lab, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China

Lin Ye

Affiliation Environmental Biotechnology Lab, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TZ X-XZ. Performed the experiments: X-XZ. Analyzed the data: X-XZ LY. Wrote the paper: TZ X-XZ LY.