The role of bacteria in the heavy metals removal and growth of Sedum alfredii Hance in an aqueous medium

Xiong, Jibing; He, Zhenli; Liu, Dan; Mahmood, Qaisar; Yang, Xiaoe

doi:10.1016/j.chemosphere.2007.06.028

Cited by 36 publications

(16 citation statements)

References 23 publications

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“…In this race bacteria, algae, fungi, actinomycetes, yeast, activated sludge and various other biopolymers have been well recognized for heavy metal removal directly or indirectly [4,[6][7][8][9][10][11][12]. In this context the role of algae is known for a few decades, but has received increased attention only in recent years because of its potential for application in environmental protection or recovery of precious or strategic metals [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Pb2+ and Zn2+ by Non-Living Biomass of Spirulina sp.

et al. 2010

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Removal of heavy metals (Pb 2? , Zn 2? ) from aqueous solution by dried biomass of Spirulina sp. was investigated. Spirulina rapidly adsorbed appreciable amount of lead and zinc from the aqueous solutions within 15 min of initial contact with the metal solution and exhibited high sequestration of lead and zinc at low equilibrium concentrations. The specific adsorption of both Pb 2? and Zn 2?increased at low concentration and decreased when biomass concentration exceeded 0.1 g l -1 . The binding of lead followed Freundlich model of kinetics where as zinc supported Langmuir isotherm for adsorption with their r 2 values of 0.9659 and 0.8723 respectively. The adsorption was strongly pH dependent as the maximum lead biosorption occurred at pH 4 and 10 whereas Zn 2? adsorption was at pH 8 and 10.

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Section: Introductionmentioning

confidence: 99%

Biosorption of Pb2+ and Zn2+ by Non-Living Biomass of Spirulina sp.

et al. 2010

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“…in the shoots of B. napus. Xiong et al (2008) observed significant increase in the uptake of Zn, Cd, and Pb by Sedum alfredii by rhizosphere microorganisms.…”

Section: Microbial Assisted Phytoremediationmentioning

confidence: 83%

A comparison of technologies for remediation of heavy metal contaminated soils

Khalid

Shahid

Niazi

et al. 2017

Journal of Geochemical Exploration

950

349

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, et al.. A comparison of technologies for remediation of heavy metal contaminated soils. Journal of Geochemical Exploration, Elsevier, 2016Elsevier, , 182, pp.247 -268. 10.1016Elsevier, /j.gexplo.2016 Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@listes-diff.inp-toulouse.fr a b s t r a c tSoil contamination with persistent and potentially (eco)toxic heavy metal(loid)s is ubiquitous around the globe. Concentration of these heavy metal(loid)s in soil has increased drastically over the last three decades, thus posing risk to the environment and human health. Some technologies have long been in use to remediate the hazardous heavy metal(loid)s. Conventional remediation methods for heavy metal(loid)s are generally based on physical, chemical and biological approaches, which may be used in combination with one another to clean-up heavy metal(loid) contaminated soils to an acceptable and safe level. This review summarizes the soil contamination by heavy metal(loid)s at a global scale, accumulation of heavy metal(loid)s in vegetables to toxic levels and their regulatory guidelines in soil. In this review, we also elucidate and compare the pool of available technologies that are currently being applied for remediation of heavy metal(loid) contaminated soils, as well as the economic aspect of soil remediation for different techniques. This review article includes an assessment of the contemporary status of technology deployment and recommendations for future remediation research. Finally, the molecular and genetic basis of heavy metal(loid) (hyper)accumulation and tolerance in microbes and plants is also discussed. It is proposed that for effective and economic remediation of soil, a better understanding of remediation procedures and the various options available at the different stages of remediation is highly necessary.

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“…Once absorbed, these metal ions could be translocated to the aerial parts of the plants. Xiong et al (2008) investigated the possible role of the rhizospheric bacteria in heavy metal removal by Sedum alfredii Hance, from zinc-, cadmium-, copper-and leadcontaminated environment using antibiotic. The results indicated that in the uptake of nitrogen and phosphorus by S. alfredii, rhizospheric bacteria might have played an important role and resulted into an improved photosynthesis which ultimately increases the chlorophyll content in the leaves and plant biomass.…”

Section: Plant Chromium Contentmentioning

confidence: 99%

“…For the antibiotic treatment, ampicillin was selected because of following reasons: (a) It has the ability to inhibit both Gram-positive and Gram-negative bacteria, (b) its property to interfere with synthesis of bacterial cell wall and c) expected minimal effect on plant physiology (de Souza et al 1999). The amount of antibiotic ampicillin [0.1 mg mL -1 ampicillin (de Souza et al 1999)] was administered according to Xiong et al (2008).…”

Section: The Hydroponics Experimentsmentioning

confidence: 99%

“…The presence of antibiotics in the growth medium may have adverse effects on the metal uptake by the hyperaccumulator plants (Xiong et al 2008). Arundo donax L. commonly called as giant reed has been recently recognized as a useful bioresource to remediate metals from contaminated soils and water (Mirza et al 2011;Kausar et al 2012;Sabeen et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Chromium uptake by giant reed under rhizobacterial inhibition

Shaheen

Mahmood

Pervez

et al. 2016

Int. J. Environ. Sci. Technol.

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The role of rhizospheric microbes of giant reed (Arundo donax L.) in Cr uptake from hydroponic culture was investigated. The control group was exposed to Cr in range of 25-100 mg L -1 containing a control itself (with no metal addition). The experimental group received same Cr treatments, but in addition was exposed to antibiotic treatment in order to inhibit rhizospheric bacteria. The range of Cr accumulated in the roots was 3-7.65 mg L -1 ; in stem it ranged 2.15-42.4 mg kg -1 ; while in leaves, the range of Cr content was 13.7-15 mg kg -1 . Overall, Cr uptake in A. donax (without rhizobacterial inhibition) was root \ leaf \ stem. However, the amount of Cr uptake in plants with rhizobacterial inhibition was significantly less (*4.6-folds in 100 mg L -1 Cr treatment) than those without such inhibition clearly highlighting that rhizobacterial inhibition decreased the Cr uptake. The experimental results clearly demonstrated that the inhibition of the rhizobacterial populations had great influence on the Cr uptake. However, Cr uptake could not be completely inhibited as some metal uptake was observed after the rhizobacterial inhibition although it was significantly less than the Cr uptake of plants without such inhibition.

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The role of bacteria in the heavy metals removal and growth of Sedum alfredii Hance in an aqueous medium

Cited by 36 publications

References 23 publications

Biosorption of Pb2+ and Zn2+ by Non-Living Biomass of Spirulina sp.

Biosorption of Pb2+ and Zn2+ by Non-Living Biomass of Spirulina sp.

A comparison of technologies for remediation of heavy metal contaminated soils

Chromium uptake by giant reed under rhizobacterial inhibition

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