Variability in carbon isotope fractionation of trichloroethene during degradation by persulfate activated with zero-valent iron: Effects of inorganic anions

The Science of the Total Environment
Yunde LiuXiaoqian Li

Abstract

Stable carbon isotope analysis has the potential to be used for assessing the performance of in situ remediation of organic contaminants. Successful application of this isotope technique requires understanding the magnitude and variability in carbon isotope fractionation associated with the reactions under consideration. This study investigated the influence of inorganic anions (sulfate, bicarbonate, and chloride) on carbon isotope fractionation of trichloroethene (TCE) during its degradation by persulfate activated with zero-valent iron. The results demonstrated that the significant carbon isotope fractionation (enrichment factors ε ranging from -3.4±0.3 to -4.3±0.3‰) was independent on the zero-iron dosage, sulfate concentration, and bicarbonate concentration. However, the ε values (ranging from -7.0±0.4 to -13.6±1.2‰) were dependent on the chloride concentration, indicating that chloride could significantly affect carbon isotope fractionation during TCE degradation by persulfate activated with zero-valent iron. The dependence of ε values on chloride concentration, indicated that TCE degradation mechanisms may be different from the degradation mechanism caused by sulfate radical (SO4(-)). Ignoring the effect of chloride on ε ...Continue Reading

References

Aug 22, 2002·Environmental Science & Technology·Simon R Poulson, Hiroshi Naraoka
Apr 29, 2004·Environmental Science & Technology·Martin ElsnerRené P Schwarzenbach
Dec 22, 2004·Journal of Contaminant Hydrology·Rainer U MeckenstockHans H Richnow
Oct 6, 2005·Environmental Science & Technology·Martin ElsnerRene P Schwarzenbach
Oct 4, 2006·The Science of the Total Environment·Chenju LiangNihar Mohanty
Jul 14, 2007·Environmental Science & Technology·Patrick K H LeeLisa Alvarez-Cohen
Aug 19, 2007·Environmental Science & Technology·Thomas B HofstetterNeil C Sturchio
Aug 23, 2008·Water Research·Chenju LiangYan-Jyun Chen
Jan 30, 2009·Environmental Science & Technology·Richard L JohnsonReid O'Brien Johnson
May 18, 2010·The Science of the Total Environment·Seok-Young OhPei C Chiu
Jul 16, 2010·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Yang DengXingmao Ma
Jan 6, 2012·Chemosphere·Lars R BennedsenErik G Søgaard
Jul 21, 2012·The Science of the Total Environment·Massimo MarchesiSilvia Mancini
Jun 12, 2013·Journal of Hazardous Materials·Massimo MarchesiAlbert Soler

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.