Iron Oxides Minimize Arsenic Mobility in Soil Material Saturated with Saline Wastewater

Journal of Environmental Quality
Madhubhashini B GalkaduwaStacy L Hutchinson

Abstract

The soil material in constructed wetlands is effective in retaining Se from flue-gas desulfurization (FGD) wastewater (WW), but reducing conditions can enhance native-soil As mobility. A laboratory-based soil column experiment was performed to assess the effectiveness of ferrihydrite (Fh) in minimizing the mobility of native-soil As in water-saturated soil material. A saline FGD WW mixture (i.e., influent) was delivered to columns of untreated and Fh-treated soil for 60 d. One untreated column and one Fh-treated column were then subjected to drying, followed by an additional 30 d of influent delivery. Although the influent was low in As (∼1 μg L) and the soil As level was normal, the total dissolved As concentration of effluent from the untreated columns increased with time, from ∼1 μg L to a maximum of ∼27 μg L. In contrast, effluent from the Fh-treated columns remained low in As (i.e., <5 μg L). The strong correlation between total dissolved Fe and As in the effluent suggested that reductive dissolution of native-soil Fe minerals was responsible for releasing As into solution. Results from X-ray absorption spectroscopy showed newly precipitated Fe minerals in the Fh-treated soil, and the remaining As was mainly As(V) species ...Continue Reading

References

Oct 6, 1998·Nature·R NicksonM Rahman
Jul 17, 2001·Environmental Science & Technology·M BergW Giger
Mar 2, 2002·Environmental Science & Technology·P E KneeboneJ G Hering
Mar 29, 2002·Environmental Science & Technology·Bruce A ManningDonald L Suarez
May 8, 2002·Environmental Science & Technology·Shawn G BennerScott Fendorf
Oct 4, 2003·Environmental Science & Technology·Suvasis Dixit, Janet G Hering
Mar 5, 2004·Environmental Science & Technology·Yoshio TakahashiKouichi Yuita
Sep 10, 2004·Proceedings of the National Academy of Sciences of the United States of America·Peggy A O'DayNelson Rivera
Jun 22, 2005·Journal of Synchrotron Radiation·B Ravel, M Newville
Oct 22, 2005·The Science of the Total Environment·Amlan GhoshWendell Ela
Dec 17, 2005·Proceedings of the National Academy of Sciences of the United States of America·Matthew L PolizzottoScott Fendorf
Dec 6, 2006·Environmental Science & Technology·Benjamin D KocarScott Fendorf
Feb 28, 2007·Journal of Hazardous Materials·Dinesh Mohan, Charles U Pittman
Apr 17, 2007·The Science of the Total Environment·Prosun BhattacharyaG Panaullah
May 26, 2007·Science·F Marc MichelJohn B Parise
Aug 6, 2008·Environmental Science & Technology·Katharine J Tufano, Scott Fendorf
Dec 17, 2008·Environmental Science & Technology·Katharine J TufanoScott Fendorf
Dec 1, 2009·Environmental Science & Technology·Samantha L Saalfield, Benjamin C Bostick
Dec 7, 2010·Environmental Science & Technology·Soumya DasJoseph Essilfie-Dughan
May 10, 2011·Chemosphere·Katherine Lizama AGuangzhi Sun
Mar 19, 2014·Applied and Environmental Microbiology·Regina LohmayerBritta Planer-Friedrich
Aug 29, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Pengfei Qi, Thomas Pichler
Oct 22, 2014·BMJ : British Medical Journal·Philip Sedgwick
Oct 28, 2014·Environmental Science & Technology·Edward D BurtonBenjamin D Kocar
Sep 4, 2015·Biotechnology and Bioengineering·Lucia Rodriguez-FreireJames A Field
Nov 24, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jose M ParedezStacy L Hutchinson

❮ 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.