+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Bioremediation of cadmium- and zinc-contaminated soil using Rhodobacter sphaeroides

Bioremediation of cadmium- and zinc-contaminated soil using Rhodobacter sphaeroides

Chemosphere 197: 33-41

Bioremediation using microorganisms is a promising technique to remediate soil contaminated with heavy metals. In this study, Rhodobacter sphaeroides was used to bioremediate soils contaminated with cadmium (Cd) and zinc (Zn). The study found that the treatment reduced the overall bioavailable fractions (e.g., exchangeable and carbonate bound phases) of Cd and Zn. More stable fractions (e.g., Fe-Mn oxide, organic bound, and residual phases (only for Zn)) increased after bioremediation. A wheat seedling experiment revealed that the phytoavailability of Cd was reduced after bioremediation using R. sphaeroides. After bioremediation, the exchangeable phases of Cd and Zn in soil were reduced by as much as 30.7% and 100.0%, respectively; the Cd levels in wheat leaf and root were reduced by as much as 62.3% and 47.2%, respectively. However, when the soils were contaminated with very high levels of Cd and Zn (Cd 54.97-65.33 mg kg-1; Zn 813.4-964.8 mg kg-1), bioremediation effects were not clear. The study also found that R. sphaeroides bioremediation in soil can enhance the Zn/Cd ratio in the harvested wheat leaf and root overall. This indicates potentially favorable application in agronomic practice and biofortification. Although remediation efficiency in highly contaminated soil was not significant, R. sphaeroides may be potentially and practically applied to the bioremediation of soils co-contaminated by Cd and Zn.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 052195066

Download citation: RISBibTeXText

PMID: 29331716

DOI: 10.1016/j.chemosphere.2018.01.017

Related references

Bioremediation of lead contaminated soil with Rhodobacter sphaeroides. Chemosphere 156: 228-235, 2016

Removal of cadmium and zinc from contaminated wastewater using Rhodobacter sphaeroides. Water Science and Technology 75(11-12): 2489-2498, 2017

Bioremediation of petroleum hydrocarbon contaminated soil by Rhodobacter sphaeroides biofertilizer and plants. Pakistan Journal of Pharmaceutical Sciences 28(5 Suppl): 1881-1886, 2015

Phytoavailability and geospeciation of cadmium in contaminated soil remediated by Rhodobacter sphaeroides. Chemosphere 88(6): 751-756, 2012

Bioremediation of cadmium by growing Rhodobacter sphaeroides: kinetic characteristic and mechanism studies. Bioresource Technology 99(16): 7716-7722, 2008

Bioremediation of cadmium by growing Rhodobacter sphaeroides kinetic characteristic and mechanism studies. Bioresource Technology: 16, 7716-7722, 2008

Zinc-biofortified wheat accumulates more cadmium in grains than standard wheat when grown on cadmium-contaminated soil regardless of soil and foliar zinc application. Science of the Total Environment 654: 402-408, 2019

A gene from the photosynthetic gene cluster of rhodobacter sphaeroides induces trans suppression of bacteriochlorophyll and carotenoid levels in rhodobacter sphaeroides and rhodobacter capsulatus. Current Microbiology 23(5): 259-264, 1991

Effect of elemental sulphur on uptake of cadmium, zinc, and sulphur by oilseed rape growing in soil contaminated with zinc and cadmium. Communications in Soil Science and Plant Analysis 35(19/20): 2905-2916, 2004

Influence of zinc supply on the phytotoxicity of cadmium in maize Zea mays L grown on cadmium-contaminated soil. 2012

Measured soil water concentrations of cadmium and zinc in plant pots and contaminated leaching outflows from contaminated soils. Water Air & Soil Pollution 102(1-2): 105-115, 1998

Comparison of phosphoribulokinase from rhodobacter sphaeroides and the rhodobacter sphaeroides gene product synthesized in escherichia coli. Abstracts of the Annual Meeting of the American Society for Microbiology 87: 223, 1987

Bioremediation of Cadmium-Contaminated Soil through Cultivation of Maize Inoculated with Plant Growth–Promoting Rhizobacteria. Bioremediation Journal 16(4): 204-211, 2012

Bioremediation of cadmium contaminated soil using symbiosis between leguminous plant and recombinant rhizobia with the MTL4 and the PCS genes. Chemosphere 66(9): 1670-1676, 2007

Cadmium Resistance Mechanism in Acidophilic and Alkalophilic Bacterial Isolates and their Application in Bioremediation of Metal-Contaminated Soil. Soil and Sediment Contamination 23(1): 1-17, 2014