Microbial Remediation of Metals in Soils

Hietala, Katie A.; Roane, Timberley M.

doi:10.1007/978-3-540-89621-0_11

Cited by 13 publications

(8 citation statements)

References 107 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, although challenges exist, organic polluted sites can be effectively restored through bioremediation strategies. On the other hand, the removal of metal ion pollutants is a particularly difficult task because metals cannot be degraded; only their chemical speciation can be changed (Hietala & Roane, 2009). Hence, bacteria‐based organic pollutant bioremediation approaches require that microorganisms are active in the presence of the target contaminant, as well as other co‐contaminants such as toxic metals (Sandrin & Hoffman, 2007; Hietala & Roane, 2009).…”

Section: Introductionmentioning

confidence: 99%

Tolerance of Pseudomonas pseudoalcaligenes KF707 to metals, polychlorobiphenyls and chlorobenzoates: effects on chemotaxis-, biofilm- and planktonic-grown cells

Tremaroli

Suzzi

Fedi

et al. 2010

FEMS Microbiology Ecology

View full text Add to dashboard Cite

Pseudomonas pseudoalcaligenes KF707 is a polychlorinated biphenyls (PCBs) degrader, also tolerant to several toxic metals and metalloids. The work presented here examines for the first time the chemotactic response of P. pseudoalcaligenes KF707 to biphenyl and intermediates of the PCB biodegradation pathway in the presence and absence of metals. Chemotaxis analyses showed that biphenyl, benzoic acid and chlorobenzoic acids acted as chemoattractants for KF707 cells and that metal cations such as Ni(2+) and Cu(2+) strongly affected the chemotactic response. Toxicity profiles of various metals on KF707 cells grown on succinate or biphenyl as planktonic and biofilm were determined both in the presence and in the absence of PCBs. Notably, KF707 cells from both biofilms and planktonic cultures were tolerant to high amounts (up to 0.5 g L(-1)) of Aroclor 1242, a commercial mixture of PCBs. Together, the data show that KF707 cells are chemotactic and can form a biofilm in the presence of Aroclor 1242 and specific metals. These findings provide new perspectives on the effectiveness of using PCB-degrading bacterial strains in bioremediation strategies of metal-co-contaminated sites.

show abstract

Section: Introductionmentioning

confidence: 99%

Tolerance of Pseudomonas pseudoalcaligenes KF707 to metals, polychlorobiphenyls and chlorobenzoates: effects on chemotaxis-, biofilm- and planktonic-grown cells

Tremaroli

Suzzi

Fedi

et al. 2010

FEMS Microbiology Ecology

View full text Add to dashboard Cite

show abstract

“…organic acids, siderophores), biosurfactants, biomass production and oxidation/reduction reactions. (Zhuang et al 2007 ;Wei et al 2003 ;Watts and Lloyd 2012 ;Sivaruban et al 2014 ;Barea et al 2005 ;Khan 2005 ;Hietala and Roane 2009 ;Juwarkar et al 2011 ;Pacwa-Plociniczak et al 2011 ;Jing et al 2014 ).…”

Section: Contaminated Soilsmentioning

confidence: 93%

“…Therefore, a promising, alternative approach to chemical amendments could be the application of microbemediated processes which is also being commonly referred to as 'microbial remediation'. In this process, microbial metabolites/activities in the soil alter the mobility and bioavailability of heavy metals (Hietala and Roane 2009 ;Rajendran et al 2003 ;Monachese et al 2012 ;Umrania 2006 ;Wenzel 2009 ;Rajkumar et al 2010 ;Miransari 2011 ;Yang et al 2012 ;Zhu et al 2015 ). It has thus been proposed as an alternative method to remediate heavy metals from soil since it does not affect soil health and fertility (Zhuang et al 2007 ;Sessitsch et al 2013 ).…”

Section: Contaminated Soilsmentioning

confidence: 96%

Remediation of Heavy Metal-Contaminated Agricultural Soils Using Microbes

Singh

Mishra

et al. 2016

Microbial Inoculants in Sustainable Agricultural Productivity

View full text Add to dashboard Cite

Heavy metals are widely spread and accumulated in soil due to various inappropriate human activities, because of which metal pollution in soil has become one of the most serious environmental problems today. In this chapter, various microbial remediation mechanisms to remediate heavy metal-contaminated soils have been described. Microbial remediation, an emerging cost-effective, renewable, nonintrusive and aesthetically pleasing technology, uses the remarkable ability of microbes to remove and transform heavy metals from contaminated soils. The very limited understanding pertaining to heavy metal removal and transformation is hindering its effective application. Due to its great potential as a viable alternative to conventional contaminated soil remediation techniques, microbial remediation is currently being looked upon as an exciting area of basic and applied research.

show abstract

“…Heavy metals mainly exist in the forms of Me 2+ , MeSO 4 , and MeCl -at pH<7, while MeHCO 3 + and MeCO 3 are dominant at pH>7 (Hietala & Roane, 2009). In the study of Sandrin & Maier (2002), the ionic cadmium (Cd 2+ ) concentration at pH 4 was 44 mg/L while it decreased to 4 mg/L at pH 7.…”

Section: Metal-microbe Interaction and Metal Speciationmentioning

confidence: 99%

“…Metal bioavailability is also influenced by redox potential. High redox potential (800 to 0 mV) favors metal solubility while low redox potential (0 to -400 mV) immobilises metal in precipitated forms (Hietala & Roane, 2009). Microbial bioremediation affects the fate of heavy metals.…”

Section: Metal-microbe Interaction and Metal Speciationmentioning

confidence: 99%