Haloacetic acid removal by sequential zero-valent iron reduction and biologically active carbon degradation

Shun Tang; Xiao mao Wang; Hong Wei Yang; Yuefeng F. Xie

doi:10.1016/j.chemosphere.2012.09.046

Haloacetic acid removal by sequential zero-valent iron reduction and biologically active carbon degradation

Shun Tang, Xiao mao Wang, Hong Wei Yang, Yuefeng F. Xie

School of Science, Engineering & Technology (Harrisburg)

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

39 Scopus citations

Abstract

An innovative haloacetic acid (HAA) removal process was developed. The process consisted of a zero-valent iron (Fe⁰) column followed by a biologically active carbon (BAC) column that were efficient in degrading tri- and di-HAAs, and mono- and di-HAAs, respectively. The merit of the process was demonstrated by its performance in removing trichloroacetic acid (TCAA). An empty bed contact time of 10min achieved nearly complete removal of 1.2μM TCAA and its subsequent products, dichloroacetic acid (DCAA) and monochloroacetic acid (MCAA). HAA removal was a result of chemical dehalogenation and biodegradation rather than physical adsorption. Preliminary kinetic analyses were conducted and the pseudo-first-order rate constants were estimated at ambient conditions for Fe⁰ reduction of TCAA and biodegradation of DCAA and MCAA by BAC. This innovative process is highly promising in removing HAAs from drinking water, swimming pool water, and domestic or industrial wastewater.

Original language	English (US)
Pages (from-to)	1563-1567
Number of pages	5
Journal	Chemosphere
Volume	90
Issue number	4
DOIs	https://doi.org/10.1016/j.chemosphere.2012.09.046
State	Published - Jan 2013

All Science Journal Classification (ASJC) codes

Environmental Engineering
Environmental Chemistry
General Chemistry
Pollution
Health, Toxicology and Mutagenesis

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10.1016/j.chemosphere.2012.09.046

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title = "Haloacetic acid removal by sequential zero-valent iron reduction and biologically active carbon degradation",

abstract = "An innovative haloacetic acid (HAA) removal process was developed. The process consisted of a zero-valent iron (Fe0) column followed by a biologically active carbon (BAC) column that were efficient in degrading tri- and di-HAAs, and mono- and di-HAAs, respectively. The merit of the process was demonstrated by its performance in removing trichloroacetic acid (TCAA). An empty bed contact time of 10min achieved nearly complete removal of 1.2μM TCAA and its subsequent products, dichloroacetic acid (DCAA) and monochloroacetic acid (MCAA). HAA removal was a result of chemical dehalogenation and biodegradation rather than physical adsorption. Preliminary kinetic analyses were conducted and the pseudo-first-order rate constants were estimated at ambient conditions for Fe0 reduction of TCAA and biodegradation of DCAA and MCAA by BAC. This innovative process is highly promising in removing HAAs from drinking water, swimming pool water, and domestic or industrial wastewater.",

author = "Shun Tang and Wang, {Xiao mao} and Yang, {Hong Wei} and Xie, {Yuefeng F.}",

note = "Funding Information: The authors wish to acknowledge the financial support from State Key Laboratory of Environmental Simulation and Pollution Control (11Z01ESPCT).",

year = "2013",

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doi = "10.1016/j.chemosphere.2012.09.046",

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AU - Tang, Shun

AU - Wang, Xiao mao

AU - Yang, Hong Wei

AU - Xie, Yuefeng F.

N1 - Funding Information: The authors wish to acknowledge the financial support from State Key Laboratory of Environmental Simulation and Pollution Control (11Z01ESPCT).

PY - 2013/1

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N2 - An innovative haloacetic acid (HAA) removal process was developed. The process consisted of a zero-valent iron (Fe0) column followed by a biologically active carbon (BAC) column that were efficient in degrading tri- and di-HAAs, and mono- and di-HAAs, respectively. The merit of the process was demonstrated by its performance in removing trichloroacetic acid (TCAA). An empty bed contact time of 10min achieved nearly complete removal of 1.2μM TCAA and its subsequent products, dichloroacetic acid (DCAA) and monochloroacetic acid (MCAA). HAA removal was a result of chemical dehalogenation and biodegradation rather than physical adsorption. Preliminary kinetic analyses were conducted and the pseudo-first-order rate constants were estimated at ambient conditions for Fe0 reduction of TCAA and biodegradation of DCAA and MCAA by BAC. This innovative process is highly promising in removing HAAs from drinking water, swimming pool water, and domestic or industrial wastewater.

AB - An innovative haloacetic acid (HAA) removal process was developed. The process consisted of a zero-valent iron (Fe0) column followed by a biologically active carbon (BAC) column that were efficient in degrading tri- and di-HAAs, and mono- and di-HAAs, respectively. The merit of the process was demonstrated by its performance in removing trichloroacetic acid (TCAA). An empty bed contact time of 10min achieved nearly complete removal of 1.2μM TCAA and its subsequent products, dichloroacetic acid (DCAA) and monochloroacetic acid (MCAA). HAA removal was a result of chemical dehalogenation and biodegradation rather than physical adsorption. Preliminary kinetic analyses were conducted and the pseudo-first-order rate constants were estimated at ambient conditions for Fe0 reduction of TCAA and biodegradation of DCAA and MCAA by BAC. This innovative process is highly promising in removing HAAs from drinking water, swimming pool water, and domestic or industrial wastewater.

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Haloacetic acid removal by sequential zero-valent iron reduction and biologically active carbon degradation

Abstract

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