Factors Affecting Chemical and Biological Reduction of Hexavalent Chromium in Soil

Losi, M. E.; Amrhein, C.; Frankenberger, W. T.

doi:10.1897/1552-8618(1994)13[1727:facabr]2.0.co;2

Cited by 18 publications

(28 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduction of Cr (VI) to Cr (III) in soils has often been found to be rapid and reaching the maximum within a relatively short time (Ross et al, 1981). The supply of carbons and protons, and stimulation of microorganisms that are considered to be the major factors enhancing the reduction of Cr (VI) to Cr (III) (Losi et al, 1994;Bolan et al, 2003). The result corroborates with the findings of Bolan et al 2003.…”

Section: Resultssupporting

confidence: 88%

Poultry manure induce biotransformation of hexavalent chromium in soil

Rangasamy¹

2013

IOSR-JESTFT

View full text Add to dashboard Cite

Chromium (Cr) in the trivalent form (Cr III) is an important component of a balanced human and animal diet and its deficiency causes disturbance to the glucose and lipid metabolism in humans and animals. In contrast, hexavalent Cr (Cr VI) is a highly toxic carcinogen and may cause death to animals and humans if ingested in large doses. Recently, concern about Cr as an environmental pollutant has been escalating due to its build up to toxic levels in the environment as a result of various industrial and agricultural activities. In the present study, the hexavalent chromium was reduced into trivalent chromium from chromium contaminated (300 µg g-1) soil. In the presence of organic amendments (poultry manure) and microbial inoculants (Pseudomonas fluorescens and Trichoderma viride) the chromium (VI) reduction was observed in maximum in the poultry manure treatment (91%) whereas poultry manure with Pseudomonas fluorescens reduced the hexavalent chromium up to 90 %.

show abstract

Section: Resultssupporting

confidence: 88%

Poultry manure induce biotransformation of hexavalent chromium in soil

Rangasamy¹

2013

IOSR-JESTFT

View full text Add to dashboard Cite

show abstract

“…There is a conflicting effect on using mineralization of organic C in metal contaminated soils because of the stimulation and inhibition on respiration [59,60]. Results of under the canopy soils show that Cr(VI)could have effects on complex soil organic matter and render it less available by reducing Cr(VI) to Cr(III) [61,62]. Thus, under the canopy soil which had more organic C, there was less inhibition of CO 2 production rate than outside canopy soils.…”

Section: N and C Mineralizationmentioning

confidence: 99%

“…The opposite trend occurred with nonresidual fraction (sum of fraction I, II, III, IV, and V) which tended to decrease with time in the two soils ( The greater percentage of Cr in the residual fraction at 120 days of incubation ( Table 3) (40-65%) probably reflects the greater tendency of Cr to become unavailable once it is in the soil [63]. The residual and non-residual Cr suggest that the metal bioavailability does not only depend on its concentration but is also affected by the characteristics of the tannery sludge and soil components (such as Fe, Mn, oxides, or the quality of organic matter) into which it is sorbed [61].This will have an impact in the interaction between Cr and the biota [64].…”

Section: Cr Fractionationmentioning

confidence: 99%

Organic Waste as Fertilizer in Semi-Arid Soils and Restoration in Mine Sites

Barajas-Aceves¹

2016

Organic Fertilizers - From Basic Concepts to Applied Outcomes

View full text Add to dashboard Cite

The use of organic waste such as tannery sludge which has high organic matter, N and P content, as organic fertilizer is suitable for improving soil fertility in semi-arid soils and for remediation of abandoned mine sites. Retention of heavy metals on fractional processes of organic matter cannot be generalized, it depends on the chemical characterization of organic waste and soil. Addition of tannery sludge containing high concentrations of Cr and carbonates to semi-arid soils resulted in an increase in Cr loss in infiltration and runoff after 6 months of incubation followed by simulated rainfall. Under these characteristics, results suggest that tannery sludge represents a potential ha ls amended with organic compost. Chemical characteristics of organic waste such as nitrogen content, humified organic matter, pH, EC, CEC, ESP (interchangeable sodium percent), and SAR (sodium absorption ratio) are important properties to consider in organic matter amendment to semi-arid soils participating on the complexity and leaching of heavy metals and nutrients in the matrix of soil.

show abstract

“…The detoxification of chromium in soil is based on the fact that Cr(VI) is readily reduced to Cr(III) and immobilized in organic matter rich soils. The use of Cr(VI)contaminated groundwater to irrigate organic matter rich soil based on the mechanism of reduction and precipitation of Cr in the soil as Cr(III) [20,21]. In a study to examine the processes responsible for Cr(VI) reduction in soil, it was reported that organic matter content, bioactivity, and oxygen status were among the important factors [21].…”

Section: Chromium In the Environment: Factors Affecting Biological Rementioning

confidence: 99%

Use of Bio-Resources for Remediation of Soil Pollution

Pal¹,

Patra²,

Reza³

et al. 2010

View full text Add to dashboard Cite

In recent years, economic boom in fast developing countries has been witnessed with spectacular progress in industrialization and concurrent progress in modern agriculture. Such development is however not without any socio-political and environmental side effects. A major concern has been the environmental pollution. If the current unabated disposal of various forms of wastes to agricultural lands is continued, the inherent capacity of soil to support agricultural production and sustain other ecosystem services will be in peril. Heavy metals with soil residence times of thousands of years present numerous health hazards to higher organisms. They are also known to decrease plant growth, ground cover and have a negative impact on soil biodiversity. Inorganic and organic contaminants typically found in urban areas are heavy metals and petroleum derived products. The presence of both types of contaminants on the same site presents technical and economic challenges for decontamination strategies. In this article we have reviewed the developments to ameliorate the contaminated soils, with special emphasis on biological approaches, which have shown potential to low-cost remediation of soil pollution. Also the limitations of such approaches and direction of further research have been highlighted

show abstract

Factors Affecting Chemical and Biological Reduction of Hexavalent Chromium in Soil

Cited by 18 publications

References 0 publications

Poultry manure induce biotransformation of hexavalent chromium in soil

Poultry manure induce biotransformation of hexavalent chromium in soil

Organic Waste as Fertilizer in Semi-Arid Soils and Restoration in Mine Sites

Use of Bio-Resources for Remediation of Soil Pollution

Contact Info

Product

Resources

About