CHARACTERISTICS, DISTRIBUTION, CORRELATION AND FORMATION TRENDS OF CHLOROBENZENS COMPOSITIONS IN INDUSTRIAL COMBINATION AND INDUSTRIAL PRODUCTION FURNACE

Nguyễn Thị Thu Thúy; Phí Thị Hương

doi:10.34238/tnu-jst.8262

CHARACTERISTICS, DISTRIBUTION, CORRELATION AND FORMATION TRENDS OF CHLOROBENZENS COMPOSITIONS IN INDUSTRIAL COMBINATION AND INDUSTRIAL PRODUCTION FURNACE

About this article

Received: 03/07/23 Revised: 25/07/23 Published: 25/07/23

Authors

1. Nguyen Thi Thu Thuy , TNU - University of Science
2. Phi Thi Huong, 1) TNU - University of Science, 2) Thai Binh Gifted High School

Abstract

In this study, to evaluate the concentrations and distribution characteristics of 07 chlorobenzenes (CBzs), we analyzed 25 samples including fly ash and bottom ash collected at 03 industrial production furnaces and 04 waste incinerators, on gas chromatography-mass spectrometry equipment. The average concentration of CBzs in industrial furnaces is from 0.723 to 34.2 ng/g and waste incinerators are 0.745 to 35.4 ng/g. The percentage distribution of CBzs in fly ash tends to be high with high chlorine compounds such as PeCB, HCB, TeCB, in bottom ash, low chlorine compounds such as 1,3-DCB, 1,2 ,4-TCB tends to account for a higher percentage. The study also correlates and predicts the mechanism of formation or dechlorination of CBzs compounds according to precursor formation and de novo mechanisms: 1,2/1,3-DCB → 1,2,4-TCB → 1,2,3,4-TeCB → PeCB → HCB. Information from research results contributes to additional information about unintentional emission sources, as well as the tendency to form in waste incinerators and industrial furnaces

Keywords

CBzs; Waste incineration; Industrial production furnace; Fly ash; Bottom ash

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DOI: https://doi.org/10.34238/tnu-jst.8262

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