Destruction of decachlorobiphenyl using supercritical water oxidation

Zhen Fang; Sikun Xu; Ian S. Butler; Richard Lee Jr. Smith; Janusz A. Koziński

doi:10.1021/ef0499630

Destruction of decachlorobiphenyl using supercritical water oxidation

Zhen Fang, Sikun Xu, Ian S. Butler, Richard Lee Jr. Smith, Janusz A. Koziński

ENV - Frontier Science for Advanced Environment

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

A microreactor (50-nL), batch reactors (6-mL), and a flow reactor (11.3-mL) were used to study the oxidation of decachlorobiphenyl (10-CB) in supercritical water. In the microreactor experiments, it was found that complete dissolution of 10-CB occurred at excess O₂ (>93%) and that both hydrolysis and oxidation contributed to 10-CB destruction. In experiments performed with the batch reactors, at excess O₂, 99.2% and 100% 10-CB could be destroyed in SCW without and with Na₂CO₃, respectively. Addition of the neutralization agent Na₂CO₃ promoted the destruction rate and reduced reactor corrosion significantly. A reaction mechanism for 10-CB destruction was proposed and this was examined further in flow experiments, where we found that 100% destruction could be achieved.

Original language	English
Pages (from-to)	1257-1265
Number of pages	9
Journal	Energy and Fuels
Volume	18
Issue number	5
DOIs	https://doi.org/10.1021/ef0499630
Publication status	Published - 2004 Sep 1

ASJC Scopus subject areas

Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology

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abstract = "A microreactor (50-nL), batch reactors (6-mL), and a flow reactor (11.3-mL) were used to study the oxidation of decachlorobiphenyl (10-CB) in supercritical water. In the microreactor experiments, it was found that complete dissolution of 10-CB occurred at excess O2 (>93%) and that both hydrolysis and oxidation contributed to 10-CB destruction. In experiments performed with the batch reactors, at excess O2, 99.2% and 100% 10-CB could be destroyed in SCW without and with Na2CO3, respectively. Addition of the neutralization agent Na2CO3 promoted the destruction rate and reduced reactor corrosion significantly. A reaction mechanism for 10-CB destruction was proposed and this was examined further in flow experiments, where we found that 100% destruction could be achieved.",

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AU - Fang, Zhen

AU - Xu, Sikun

AU - Butler, Ian S.

AU - Smith, Richard Lee Jr.

AU - Koziński, Janusz A.

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N2 - A microreactor (50-nL), batch reactors (6-mL), and a flow reactor (11.3-mL) were used to study the oxidation of decachlorobiphenyl (10-CB) in supercritical water. In the microreactor experiments, it was found that complete dissolution of 10-CB occurred at excess O2 (>93%) and that both hydrolysis and oxidation contributed to 10-CB destruction. In experiments performed with the batch reactors, at excess O2, 99.2% and 100% 10-CB could be destroyed in SCW without and with Na2CO3, respectively. Addition of the neutralization agent Na2CO3 promoted the destruction rate and reduced reactor corrosion significantly. A reaction mechanism for 10-CB destruction was proposed and this was examined further in flow experiments, where we found that 100% destruction could be achieved.

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Destruction of decachlorobiphenyl using supercritical water oxidation

Abstract

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