Abstract

Nanoscale zero-Valent Iron (nZVI) particles were prepared in the presence of 20 kHz ultrasonic irradiation in order to enhance disparity and reactivity and simultaneously avoid agglomeration. Dechlorination of 3-chlorobiphenyl (3-Cl BP) by nZVI particles was investigated to understand its feasibility for an in situ remediation of contaminated groundwater. Experimental results showed that the induction of ultrasound during the preparation of nZVI further enhanced the removal efficiency of 3-Cl BP, meanwhile the Biphenyl (BP) formation rates increased obviously. The dechlorination rate was dependent on various factors including nZVI dosage, reaction temperature and initial pH values. The degradation of 3-Cl BP followed pseudo-first-order kinetics reaction.

Keywords:

3-Chlorobiphenyl (3-Cl BP), dechlorination, kinetics, nanoscale Zero-Valent Iron (nZVI), ultrasound,

References

Competing interests

The authors have no competing interests.

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The authors have no competing interests.