Deployment of Microbial Biosensors to Assess the Performance of Ameliorants in Metal-Contaminated Soils

Maletić, Snežana; Watson, Malcolm; Dehlawi, Saad Mohammad Abid; Diplock, E. E.; Mardlin, David; Paton, Graeme I.

doi:10.1007/s11270-015-2358-x

Cited by 8 publications

(8 citation statements)

References 30 publications

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“…However, in the mid and later stage of incubation, the adverse effects of CaS x amendment are alleviated, as evident by the recovery of soil microbial metabolic and community diversity from Day 30. This result is consistent with Maletić et al (2015), who reported that the addition of CaS x could not only effectively stabilize metal contaminated soils, but also reduce the microbial toxicity of heavy metal in the pore water of soil. Considering cost feasibility, the price of commercially available CaS x (500 $/t) is slightly more expensive than biochar (300 $/t); however, the recommended effective dose for biochar is 5%, which is 5-fold greater than the effective CaS x recommended amendment rate of 1%.…”

Section: Effects Of Cas X On Soil Microbial Metabolic and Community Dsupporting

confidence: 92%

“…2). According to the literatures, appropriate dosage of CaS x amendment could chemically react with heavy metals in the soil, and produces stable metal sulfide or precipitation of hydroxide, which can reduce the mobility of heavy metal (Aratani et al, 1979;Chrysochoou et al, 2010;Maletić et al, 2015;Dahlawi and Siddiqui, 2017). However, excessive dosage of CaS x amendment may initiate the formation of a soluble metal ion complex [MS x ] n− , thus causing the dissolution and re-mobilization of metal cations from the precipitated compounds (Li, 2014).…”

Section: Effects Of Cas X On Soil Ph and Metal Bioavailabilitymentioning

confidence: 99%

“…Contaminants, such as heavy metals, could transfer from these potential waste streams into the coastal wetland soils causing pollution, and resulting human health and ecological risks to the coastal wetland soil ecosystem (Reddy et al, 2009;Bao et al, 2017). According to some investigations reviewed by Pan and Wang (2012), the average Cd concentration in estuarine and coastal environments in China varies from 0 to 9.7 mg kg −1 . However, in some particular sites adjacent to mining and smelling districts in the coastal zone of China, Cd concentrations can be as high as 200-400 mg kg −1 (Fan et al, 2006;Zhong et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…and other minerals (such as zeolite, lime, red mud, bentonite, sepiolite, etc.) (Lee et al, 2009;Janoš et al, 2010;Koptsik, 2014;Maletić et al, 2015;Abad-Valle et al, 2016;Guemiza et al, 2017). Their stabilization mechanisms vary with respect to different types of stabilization agents, soil physicochemical properties, as well as soil microbial activities.…”

Section: Introductionmentioning

confidence: 99%

“…Chrysochoou et al (2010) added CaS x to Cr(VI)-contaminated soils and found the solubility of transformed Cr(III) was continually decreased over one year of incubation, indicating high efficiency and long-term stabilization of Cr. Maletić et al (2015) compared the stabilization effects of four ameliorants, including bone meal, activated carbon, bentonite and CaS x to the stabilization of Pb, Cu and Ni-contaminated soils. They found CaS x had better stabilization effects on the heavy metals than other ameliorants, and the stabilization effects increased with increasing dosages of CaS x .…”

Section: Introductionmentioning

confidence: 99%

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Stabilizing effects on a Cd polluted coastal wetland soil using calcium polysulphide

Guan

Sun

et al. 2018

Geoderma

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In this study, different dosages of calcium polysulphide (CaS x) were used as an amendment to investigate effects on the immobilizing of Cd in a wetland soil by pot experiment. In addition to chemical analysis (pH and bioavailable Cd concentration), changes in soil enzyme activities, microbial carbon utilization capacity, metabolic and community diversity were examined to assess dynamic impacts on soil environmental quality and toxicity of Cd resulting from ameliorant dosing. Soil pH increased immediately upon CaS x amendment compared to the unamended control (CK), and then declined slowly to a level lower than CK. Diethylenetriamine pentaacetic acid (DTPA) extractable Cd concentration was determined to characterize the bioavailability of Cd in the soil. The CaS x dose-dependent effect observed that with increasing CaS x dosage, the immobilizing efficiency decreased. Soil urease and catalase activity assays and Biolog EcoPlate assay indicated that early stage addition of CaS x significantly inhibited soil microbial activities. However, mid and late stage time periods showed the inhibition effects were alleviated, and the microbial activities could be recovered in 1% and 2% CaS x treatments. Moreover, with increasing incubation time, microbial community diversity and richness were significantly recovered in 1% and 2% CaS x treatments compared to the CK. No considerable changes were observed in the 5% CaS x treatment. Conclusively, the 1% CaS x amendment was an efficient and safe dosage for the stabilization of Cd contaminated wetland soil. This study contributes to the development of in situ remediation ameliorants and technologies for heavy metal polluted wetland soils.

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Section: Effects Of Cas X On Soil Microbial Metabolic and Community Dsupporting

confidence: 92%

Section: Effects Of Cas X On Soil Ph and Metal Bioavailabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Stabilizing effects on a Cd polluted coastal wetland soil using calcium polysulphide

Guan

Sun

et al. 2018

Geoderma

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Calcium polysulphide, its applications and emerging risk of environmental pollution—a review article

Dahlawi

Siddiqui

2016

Environ Sci Pollut Res

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Easy availability, preparation technique, and economic value make calcium polysulphide (CaS ) a very useful inorganic chemical for various field and industrial applications. In this article, disparate applications of CaS solution have been reviewed to suggest potential and future consolidation. This article also encompasses the physiochemical properties and production of CaS solution, with critical appraisal on research focusing on CaS application in agriculture industries and removal of potentially toxic elements (PTEs) from the environment. The kinetics of CaS , technical issues associated with optimization of its dosage and environmental fate is also discussed in detail. This study covers almost all of the peer-reviewed research that has been performed since 1914. Some of the critiques in this article include the lack of integration between the exposure effect and the efficiency of treatment method, effects of oxidizing environments on the long-term performance of CaS solution, and kinetics of CaS solution with the PTEs. The working model of CaS with PTEs is still system dependent, and therefore cannot be used with other applications. The kinetics of CaS is described in detail with various phase stoichiometric reactions. Environmental fate is discussed based on applications, government reports, peer-reviewed articles and kinetics of CaS , which provides a clear picture of emerging contaminants in the environment in relation to the insect resistance and ecotoxicology. Real time, lab based research articles are needed to identify toxicity limits of CaS in environment in order to describe its effective permissible limit in environmental system. This review article provides a risk assessment of environmental pollution by CaS based on its physicochemical characteristic, stoichiometry, kinetics, field, and industrial applications.

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Chemical sensors for soil analysis: principles and applications

Lvova

Nadporozhskaya

2017

New Pesticides and Soil Sensors

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Deployment of Microbial Biosensors to Assess the Performance of Ameliorants in Metal-Contaminated Soils

Cited by 8 publications

References 30 publications

Stabilizing effects on a Cd polluted coastal wetland soil using calcium polysulphide

Stabilizing effects on a Cd polluted coastal wetland soil using calcium polysulphide

Calcium polysulphide, its applications and emerging risk of environmental pollution—a review article

Chemical sensors for soil analysis: principles and applications

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