Treatment additives reduced arsenic and cadmium bioavailability and increased 1,2-dichloroethane biodegradation and microbial enzyme activities in co-contaminated soil

Olaniran, Ademola O.; Balgobind, Adhika; Kumar, Ajit; Pillay, Balakrishna

doi:10.1007/s11368-017-1683-7

Cited by 7 publications

(4 citation statements)

References 65 publications

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“…The existing information in literature about the effect of heavy metals and uranium on soil microorganisms is limited. Meanwhile, the total contents of heavy metals may not necessarily be an indicator reflecting adverse effects on microbiomes, because the toxic effects are dependent not only dependent on the intrinsic toxicity and concentration of contaminant but also on geochemical phases in which it is present in soil (Olaniran et al, 2017). The geochemical forms of heavy metals are varied in natural environment, including exchangeable, carbonate, Fe–Mn bound, organic, and residual fractions (Tessier et al, 1979; Neto et al, 2016; Palleiro et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Speciation Distribution of Heavy Metals in Uranium Mining Impacted Soils and Impact on Bacterial Community Revealed by High-Throughput Sequencing

et al. 2019

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This study investigated the influence of heavy metals on bacterial community structure in a uranium mine. Soils from three differently polluted ditches (Yangchang ditch, Zhongchang ditch, and Sulimutang ditche) were collected from Zoige County, Sichuan province, China. Soil physicochemical properties and heavy metal concentrations were measured. Differences between bacterial communities were investigated using the high-throughput sequencing of the 16S rRNA genes. The obtained results demonstrated that bacterial richness index (Chao and Ace) were similar among three ditches, while the highest bacterial diversity index was detected in the severely contaminated soils. The compositions of bacterial communities varied among three examined sites, but Proteobacteria and Acidobacteria were abundant in all samples. Redundancy analysis revealed that soil organic matter, Cr and pH were the three major factors altering the bacterial community structure. Pearson correlation analysis indicated that the most significant correlations were observed between the contents of non-residual Cr and the abundances of bacterial genera, including Thiobacillus, Nitrospira , and other 10 genera. Among them, the abundances of Sphingomonas and Pseudomonas were significant and positively correlated with the concentrations of non-residual U and As. The results highlighted the factors influencing the bacterial community in uranium mines and contributed a better understanding of the effects of heavy metals on bacterial community structure by considering the fraction of heavy metals.

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Section: Introductionmentioning

confidence: 99%

Speciation Distribution of Heavy Metals in Uranium Mining Impacted Soils and Impact on Bacterial Community Revealed by High-Throughput Sequencing

et al. 2019

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“…Sewage sludge is composed of highly oxidizable organic substrate and contains a huge amount of biomass. An increase in the amount of organic pollutants leads to increase in nutrient availability to soil microbes which results in increase the dehydrogenase enzyme activity in soil treated with polluted water (Pascual et al 2000;Olaniran et al 2017). These drains are the rich source of sewage sludge and municipal waste which favors the growth of microbial population.…”

Section: Enzyme Activity Assaysmentioning

confidence: 99%

Impact of heavy metal contamination and seasonal variations on enzyme’s activity of Yamuna river soil in Delhi and NCR

Sharma

Singh

2020

Appl Water Sci

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Yamuna river is one of the most important rivers of India and is highly polluted. The river water and the adjacent soil are contaminated with various pollutants including heavy metals. Soil enzymes play important role in various bio-geochemical cycles and help in maintaining nutrient availability of soil. They are very sensitive toward changing environment and therefore act as a key indicator of soil health. In the present study, effects of seasonal variations and heavy metals contamination in Yamuna river water were observed on physicochemical properties and enzyme activities of soil. Soil samples were collected from ten different locations, along the course of the Yamuna river in Delhi-NCR, in three different seasons, i.e., summer, rainy and winter. These sampling sites were divided into three segments, up, middle and lower streams. The concentrations of heavy metals were found to be higher than their safe limit at all the ten sampling points. The total organic carbon content and soil respiration was significantly higher in lower stream. Dehydrogenase enzyme activity was higher in winter season, while urease and arginine deaminase enzyme activity was higher in summer season. Dehydrogenase, arginine deaminase and nitrate reductase enzyme activities were higher in lower streams, while urease enzyme shows maximum activity in the up stream. Thus, we conclude that the continuous application of Yamuna water for irrigation may degrade the soil quality.

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“…1,2-Dichloroethane (DCA) is the most common halogenated hydrocarbon . The industrial yield is up to 15.87 million tons worldwide.…”

Section: Introductionmentioning

confidence: 99%

“…4 1,2-Dichloroethane (DCA) is the most common halogenated hydrocarbon. 5 The industrial yield is up to 15.87 million tons worldwide. DCA is mainly used as the intermediate raw material for vinyl chloride and other chemicals, as well as industrial solvents, pesticides, and detergents.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Simulation Studies on the Capture of Chlorinated Volatile Organic Compounds by Ionic Liquids

Song

Gui

Lei

2023

Ind. Eng. Chem. Res.

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The hydrophilic ionic liquid (IL) [EMIM][BF 4 ] was adopted to absorb two chlorinated volatile organic compounds (CVOCs), named 1,2dichloroethane and 1,1,2-trichloroethane. First, [EMIM][BF 4 ] was screened out as the optimal absorbent from 69 IL candidates by the COSMO-RS model. Then, CVOC absorption experiments were conducted usingshows the highest absorption rate for both 1,2dichloroethane (95.81%) and 1,1,2-trichloroethane (84.91%). Quantum chemical calculations show that both strong intermolecular electrostatic interaction and van der Waals interaction promote the absorption of CVOCs by [EMIM][BF 4 ]. Subsequently, industrial-scale CVOC capture processes, simulation and optimization, were carried out with [EMIM][BF 4 ] and TEG as absorbents, to attain the goal of reducing the concentration of CVOCs in the gas stream to 500 ppm (in mole fraction). The result shows that [EMIM][BF 4 ] has a higher processing capacity and a lower heat duty under optimal operating conditions.

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Treatment additives reduced arsenic and cadmium bioavailability and increased 1,2-dichloroethane biodegradation and microbial enzyme activities in co-contaminated soil

Cited by 7 publications

References 65 publications

Speciation Distribution of Heavy Metals in Uranium Mining Impacted Soils and Impact on Bacterial Community Revealed by High-Throughput Sequencing

Speciation Distribution of Heavy Metals in Uranium Mining Impacted Soils and Impact on Bacterial Community Revealed by High-Throughput Sequencing

Impact of heavy metal contamination and seasonal variations on enzyme’s activity of Yamuna river soil in Delhi and NCR

Experimental and Simulation Studies on the Capture of Chlorinated Volatile Organic Compounds by Ionic Liquids

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