Reduction of chromium toxicity by applying various soil amendments in artificially contaminated soil
Journal Title: Journal of Advances in Environmental Health Research (JAEHR) - Year 2014, Vol 2, Issue 4
Abstract
Six soil amendments including municipal solid waste compost (MSWC), coal fly ash (CFA), rice husk biochar prepared at 300°C (B300) and 600°C (B600), zerovalent iron (Fe0), and zerovalent manganese (Mn0) were evaluated to determine their ability to reduce mobility of chromium (Cr) in a Cr-spiked soil. The Cr-spiked soil samples were separately incubated with selected amendments at 2 and 5% [weight by weight (W/W)] for 90 days at 25°C. The efficacy of amendment treatments was evaluated using desorption kinetic experiment and sequential extraction producer. Results showed that applications of various amendments had significant effects on desorption and chemical forms of Cr. Addition of amendments considerably decreased mobility factor (except for CFA5%) of Cr compared to the control treatment. The addition of Fe0, MSWC, and B300 to soil significantly decreased Cr release, compared to other amendments. The lowest Cr desorption was achieved by Fe0 at 5%. Application of B600 and CFA increased soil pH and caused the oxidation of Cr(III) to Cr(VI). Based on the obtained highest values of coefficient of determination (R2) and lowest values of standard error (SE) of the estimate, the two first-order reaction model could be best fitted for describing Cr release in soil samples. In general, from the practical view, Fe0, MSWC, and B300 treatments are effective in Cr immobilization, while application of Fe0 at 5% was the best treatment for stabilization of Cr. Therefore, these treatments can be recommended for the immobilization of Cr from polluted soil.
Authors and Affiliations
Mahboub Saffari, Najafali Karimian, Abdolmajid Ronaghi, Jafar Yasrebi, Razai Ghasemi- Fasea
Keywords
Related Articles
- EP ID EP420138
- DOI 10.22102/JAEHR.2014.40176
- Views 137
- Downloads 0
Effect of waterborne copper oxide nanoparticles and copper ions on guppy (Poecilia reticulata): Bioaccumulation and histopathology
The aim of the present study was to investigate the effect of copper oxide nanoparticles (CuO-NPs) and copper ions (Cu++) on guppy (Poecilia reticulata), in order to assess Cu uptake in the gill, and histopathology of gi...
Macroinvertebrate diversity indices: A quantitative bioassessment of ecological health status of an oxbow lake in Eastern India
Aquatic macroinvertebrates, which play a significant role in the food chain of an ecosystem, are used in fresh water quality assessment to identify the environmental stress resulting from a variety of anthropogenic distu...
Assessment of Pb, Cd, and Zn in Isfahan’s air dust during 2015-2017 (A case study: North, West, and East Stations of Isfahan)
The present study aimed to measure the heavy metals existing in Isfahan’s dust at three stations during 2015-2017. This study was carried out in three stations located at north and northwest, west and southwest, and east...
The study of azo dye removal from liquid medium by modified clay
In this batch study, montmorillonite was modified by a cationic surfactant [hexadecyltrimethylammonium bromide (HDTMA-MMT)] and used as sorbent to remove bromocresol green (BCG) from aqueous solutions. The effect of seve...
Fabrication, characterization, and microscopic imaging of Fe2O3-modified electrospun nanofibers
This study explored the fabrication, characterization, and microscopic imaging of highly porous electrospun nanofibers based on pure and Fe2O3 nanoparticle modified polyacrylonitrile (PAN) fibers. The desired electrospin...