Evaluation of the Bioavailability and Pollution Indexes of Some Toxic Metals  in Polluted Soils from an Abandoned Mining Area

Dinu, Cristina; Ungureanu, Eleonora‐Mihaela; Vasile, Gabriela Geanina; Kim, Lidia; Pascu, Luoana Florentina; Simion, Marius

doi:10.37358/rc.18.11.6722

Cited by 7 publications

(8 citation statements)

References 11 publications

(26 reference statements)

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“…At the same time, considerable quantities of waste water generated by anthropogenic activities such as mining and other industries can induce a major alteration of ecosystems and severe human health problems [3]. The mine activities can generate an environmental pollution with valuable metals such as gold, silver, copper, iron, zinc and others [4][5][6]. In order to reduce the pollution, a variety of technologies has been intensively applied for the removal of metals from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Experimental Model for Cu(II) and Fe(III) Sorption from Synthetic Solutions Based on Maize Stalk

Marin¹,

Batrinescu²,

Stănculescu³

et al. 2020

Rev. Chim.

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This study is based to a new concept, to use maize stalk for specific sorption and recovery of Cu(II) and Fe(III) from synthetic solutions. Thus, the sorption properties of the biomass resulting from the recycling of the maize stalk that reached maturity (autumn) were studied. In the first stage, the sorption properties of the maize stalk were evaluated in batch system. Moreover, in terms of water quality improvement several key parameters that influence the sorption equilibrium were evaluated. The effect of contact time (0-120min) and cations initial concentration (investigated range: 0.05-0.4 mg/L) on biomaterial sorption capacity were assessed. Kinetic studies were performed taking into consideration the initial concentration of metallic cation. The experimental data were analyzed based on first order kinetic model, pseudo-second-kinetic model and Morris Webber kinetic model. The kinetics of sorption was in accordance with the pseudo - second - kinetic model as the correlation coefficients showed (R2=0.9940 for Cu(II) and R2=0.9999 for Fe(III)). Moreover the desorption study was evaluated with hydrochloric acid and have detected to be 63% and 89% for Cu(II) and Fe(III) when 4M HCl is used. The surface of the maize stalk loaded with Cu(II) and Fe(III) was characterized by various specific techniques such as FTIR-ATR, SEM, and TG. Experimental results revealed that cations sorption process takes place on the sorbent surface. The sorption rate of each metallic cation is controlled by the formation of chemical bonds with surface polar groups. Their presence on biomass structure, evidenced by FTIR-ATR analysis, explains the behavior of maize stalk as a weak ion exchanger acid.

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Section: Introductionmentioning

confidence: 99%

Experimental Model for Cu(II) and Fe(III) Sorption from Synthetic Solutions Based on Maize Stalk

Marin¹,

Batrinescu²,

Stănculescu³

et al. 2020

Rev. Chim.

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“…In recent years, numerous studies have been conducted to determine the arsenic species (As) in drinking, mineral, surface water and groundwater, in products within the food chain, due to the wellknown toxic and carcinogenic effects of its chemical forms and oxidation states [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

HG-ICP-OES Technique, a Useful Tool for Arsenic Determination in Soft Water

Serban¹,

Vasile²,

Galaon³

et al. 2020

Rev. Chim.

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This paper presents a fast, sensitive, linear and precise method for the determination of arsenic (As) at trace levels, from different types of water (drinking, mineral, surface water and groundwater) using hydride generation and optical emission spectrometry with inductively coupled plasma (HG-ICP-OES). In order to generate the hydride, the initial pretreatment of the samples with a mixture of potassium iodide and ascorbic acid is necessary, in hydrochloric acid medium for reducing the As5+ to As3+ ions and for the subsequent formation of the hydride from As3+ ions and sodium borohydride, in a continuous-flow cell. The quantification limit of the method (LOQ = 0.43 �g/L), the precision (3.41%), the recovery yield (95%) and the measurement uncertainty of 24% frame the method within the limits imposed by the acceptance criteria of an analytical method for arsenic determination. The proposed method was tested on several types of water, the obtained results being compared to those obtained by applying two sensitive and selective alternative methods using ICP-MS, respectively ultrasonic nebulizer and ICP-OES.

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“…At incineration temperatures above 600 º C, the release CO2 will take place at the same time as the release of other volatile inorganic compounds such as sodium and potassium compounds. The use of biomass fuels for power generation leads to atmospheric emissions and produces solid wastes that concentrate metals and other elements from the original feedstock [10][11][12][13].Determination of trace metals in ashes generally include a mineral acid extraction (wet oxidation) followed by atomic absorption (AAS) or inductively coupled plasma mass spectrometry (ICP-MS) analyses. Wet oxidation is normally carried out by digestion of the sample in a mixture of strong acids such as sulphuric, hydrochloric, hydrofluoric, nitric and perchloric acids.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Characterization of Different Types of Biomass Wastes Using Thermogravimetric and ICP-MS Analyses

Kim¹,

Catrina²,

Covaliu³

et al. 2020

Rev.Chim.

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The purpose of this study was to characterize some types of biomass wastes resulted from different activities such as: agriculture, forestry and food industry using thermogravimetric and ICP-MS analyses. Also, it was optimized an ICP-MS method for the determination of As, Cd and Pb from biomass ash samples. The ICP-MS analysis revealed that the highest concentration of metals (As, Cd, Pb) was recorded in the wood waste ash sample, also the thermogravimetric analysis indicated that the highest amount of ash was obtained for the same sample (26.82%). The biomass wastes mentioned in this study are alternative recyclable materials, reusable as pellets and briquettes. Keywords: ash, biomass, ICP-MS, minor elements, TG

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Evaluation of the Bioavailability and Pollution Indexes of Some Toxic Metals in Polluted Soils from an Abandoned Mining Area

Cited by 7 publications

References 11 publications

Experimental Model for Cu(II) and Fe(III) Sorption from Synthetic Solutions Based on Maize Stalk

Experimental Model for Cu(II) and Fe(III) Sorption from Synthetic Solutions Based on Maize Stalk

HG-ICP-OES Technique, a Useful Tool for Arsenic Determination in Soft Water

Characterization of Different Types of Biomass Wastes Using Thermogravimetric and ICP-MS Analyses

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