scholarly journals New methods of cleaning soil from heavy metals

2021 ◽  
Vol 843 (1) ◽  
pp. 012048
Author(s):  
R F Baibekov ◽  
S L Belopukhov ◽  
V I Savich ◽  
A S Razin
Keyword(s):  
Heavy Metals ◽  
Avena Sativa ◽  
Podzolic Soil ◽  
Complex Compounds ◽  
Preliminary Treatment ◽  
Soluble Salts ◽  
New Methods ◽  
Mobility Of Ions ◽  
Complexation Reactions ◽  
Biophilic Elements

Abstract The purpose of the work was to study new methods of cleaning soil from heavy metals. In this work, it was proposed to extract heavy metals Cd, Zn, Fe, Cu, Mn, Pb from soils using the method of biological purification. For this, we recommended to carry out preliminary treatment of soils with complexones and to carry out additional introduction of biophilic elements into complex compounds. The possibility of using electromechanical treatment for removing heavy metals from soils after a preliminary increase in the mobility of ions by acidification and the use of complexation reactions is shown. The experiments were carried out on the plants of sowing oat Avena sativa L. variety Yakov when grown in laboratory conditions on sod-podzolic soil with the introduction of soluble salts of heavy metals into the soil. It was noted that the largest amount of heavy metals is concentrated in the root system of plants. When growing oats in the field, the concentration of metals in the grain was assessed: Mn - 30-35 ppm, Fe - 55-65 ppm, Cu - 4-5 ppm, Zn - 30-35 ppm, Cd, Pb < 3 ppm.

scholarly journals Properties, processes and modes characterizing the state of heavy metals in soils

2021 ◽  
Vol 285 ◽  
pp. 06007
Author(s):  
Andrey Sorokin ◽  
Sergey Belopukhov ◽  
Vladimir Gukalov ◽  
Vitaly Savich ◽  
Ravil Baibekov ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Thermal Effects ◽  
Podzolic Soil ◽  
Pair Correlation ◽  
Complex Compounds ◽  
The State ◽  
Energy Assessment ◽  
The Relationship ◽  
Kinetics Of ◽  
Heavy Metals In Soils

The study proves the expediency of assessing the state of heavy metals in soils by the fractional composition of soil compounds, processes and modes. An informational and energy analysis of the state of heavy metals in soils was carried out. The need for an assessment of the kinetics of their desorption from soils was substantiated. The CH3 COONH4 solution displaced 0.3 mg/l Mn from the sod-podzolic soil within 10 minutes, 0.8 mg/l Mn – within 1 hour, 3.3 mg/l Mn – within 1 day, and 12.9 mg/l – within one week; 0.18 mg/L Pb was desorbed within 10 minutes, up to 0.59 mg/l Pb was desorbed within one day. The depositing capacity of soils is an important parameter. Heavy metals in soils are bound into positively and negatively charged systems at рКН of 2-10. In the sod-podzolic soil, the content of NiLn+ was 13.3 mg/l and NiLn-- 1.9 mg/l. According to the informational assessment, heavy metals in soils are characterized by the relationship with other soil properties and change along the soil profile, which was determined from the equations of pair correlation and multiple regression. According to the energy assessment, heavy metals in soils are characterized by thermal effects of their sorption and desorption and have positively and negatively charged complex compounds and air ions

scholarly journals Application of laser diffraction method for determination

2008 ◽  
Vol 53 (No. 1) ◽  
pp. 34-38 ◽  
Author(s):  
M. Ryzak ◽  
A. Bieganowski ◽  
R.T. Walczak
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Podzolic Soil ◽  
Diffraction Method ◽  
Laser Diffraction ◽  
Soil Material ◽  
New Methods ◽  
Particle Size Distribution Measurement ◽  
Straight Lines

Particle size distribution affects many physical soil properties and processes taking place in soil. There are many methods to determine the particle size distribution. The most frequently used are the sieve, sieve-pipette and sedimentation methods. Technological progress in electronics permitted a wide use of new methods of particle size distribution measurement in soil, e.g. the laser diffraction method. A comparison of particle size distribution obtained with the universally used areometer method (Cassagrande, modified by Pr&oacute;szynski) with results from the laser diffraction method for soil material received from grey-brown podzolic soil is presented in this work. The largest differences between the results were obtained for the smallest fraction determined with the areometer and laser diffraction methods. In a majority of other cases the slopes of interpolated straight lines were contained within the range of 0.81 &divide; 1.09.

The effects of soil factors on the distribution of Agrostis gigantea on a mine waste site

1977 ◽  
Vol 55 (8) ◽  
pp. 1038-1042 ◽  
Author(s):  
Gary D. Hogan ◽  
Gerald M. Courtin ◽  
Wilfried E. Rauser
Keyword(s):  
Heavy Metals ◽  
Avena Sativa ◽  
Mine Waste ◽  
Selective Advantage ◽  
Copper Tolerance ◽  
Waste Site ◽  
Soil Factors ◽  
Extractable Metals ◽  
Water Extractable

A number of soils were examined from areas of a mine waste contaminated with heavy metals. Soils from areas vegetated with Agrostis gigantea Roth, which did not possess copper tolerance were compared with adjacent barren areas. Soils from sites which supported non-tolerant grasses had higher pHs and were lower in water-extractable metals than soils from non-vegetated areas. The soils did not differ with respect to any other factor examined. The non-vegetated soils were shown to be more toxic to the growth of Avena sativa than vegetated soils. The establishment and survival of grasses not having the selective advantage of copper tolerance were found to be restricted to the less toxic regions of the study site.

Use of hydrocyclone and flotation column for reducing the volume of contaminated dredged material

2006 ◽  
Vol 53 (7) ◽  
pp. 151-157 ◽  
Author(s):  
K.H. Park ◽  
J.H. Lee ◽  
B.H. Bae ◽  
Y.H. Kim ◽  
Y.K. Choung
Keyword(s):  
Heavy Metals ◽  
Integrated Treatment ◽  
Reduction Ratio ◽  
Volume Reduction ◽  
Wash Water ◽  
Column Flotation ◽  
Preliminary Treatment ◽  
Primary Concern ◽  
Flotation Column ◽  
Transmission Oil

As sediment contamination problems have recently been raised in Korea, the need for technologies to clean contaminants in sediments has increased. Although the recalcitrant organic matters and heavy metals in the contaminated sediments are of primary concern, large amounts of sediment makes the removal of the contaminants in them more difficult. In this study, the performance of hydrocyclone and flotation column was tested to reduce the volume of contaminated dredged materials (CDMs) prior to treating recalcitrant matters, such as various organic chemicals and heavy metals, in an integrated treatment system. When hydrocyclone was operated with 10% (w/v) solids concentration of the feed slurry, the total solids of upflow products were 4 to 7% (w/v) when the inlet pressure was changed from 1.0 to 2.0 kg/cm2. The volume reduction ratio of CDMs by hydrocyclone was approximately 90% (v/v). When the upflow products in hydrocyclone was then spiked with automobile transmission oil and fed to the flotation column to see the performance of the column flotation on the volume reduction and the TPH removal, 44% of the TPHs in feed were removed at the tails and the volume reduction ratio of CDMs by column flotation was 18% at 200 L/min of wash water. The flotation column could be proposed as a potential preliminary treatment process of CDMs prior to subsequent biological treatments.

Distribution of rare-earth (Y, La, Ce) and other heavy metals in the profiles of the podzolic soil group

2011 ◽  
Vol 44 (5) ◽  
pp. 500-509 ◽  
Author(s):  
Yu. N. Vodyanitskii ◽  
S. V. Goryachkin ◽  
A. T. Savichev
Keyword(s):  
Heavy Metals ◽  
Rare Earth ◽  
Podzolic Soil ◽  
Soil Group

scholarly journals Stress caused by plant virus infection in presence of heavy metals

2017 ◽  
Vol 38 (SI 2 - 6th Conf EFPP 2002) ◽  
pp. 455-457 ◽  
Author(s):  
A.V. Shevchenko ◽  
I.G. Budzanivska ◽  
T.P. Shevchenko ◽  
V.P. Polischuk
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Nicotiana Tabacum ◽  
Virus Infection ◽  
Plant Virus ◽  
Metal Content ◽  
Potato Virus X ◽  
Model System ◽  
Soluble Salts ◽  
Infection Experiments

Due to increased heavy metal content in Ukrainian soils, purpose of the work was to study relations between presence of heavy metals in soil and their effect on development of phytoviral infection. Experiments were conducted in Nicotiana tabacum – Potato virus X model system. Soluble salts of Cu, Zn and Pb were deposited in soil separately at the limiting concentrations simultaneously with virus infection of plants. Infected plants grown on usual soil showed symptoms of disease on 16 dpi as well as plants grown on soil with metals deposited. Contrary, combined effect of heavy metals and virus infection caused an increase of chlorophyll content comparing with control plants, therefore effect of heavy metals partially compensated the effect of virus infection on experimental plants.

Chemical composition of composted grape marc

2009 ◽  
Vol 60 (5) ◽  
pp. 1265-1271 ◽  
Author(s):  
Antonio F. Patti ◽  
G. (Jason) Issa ◽  
Ron Smernik ◽  
Kevin Wilkinson
Keyword(s):  
Heavy Metals ◽  
Chemical Composition ◽  
Chemical Analysis ◽  
Soluble Salts ◽  
Grape Marc ◽  
Potassium Sources ◽  
Low Levels ◽  
Very High ◽  
Detailed Chemical

Composted grape marc, produced at the vineyard using different procedures, is generally returned into the vineyard. Information on the chemical composition of these grape marc composts is lacking, particularly the variability that may result from different composting practices. In this study, grape marc composts, varying in age from 3 months to 3 years, were collected from four different vineyards and subjected to detailed chemical analysis. The chemical analysis revealed that all the grape marc composts contained levels of free potassium, in the range of 2–3% w/w. Plant macronutrients such as Ca, S, Mg were present at low levels (&lt;1% w/w), while phosphorus (0.1–0.3% w/w) and nitrogen (1–2% w/w) levels were not very high and mainly present in “plant unavailable” form. The levels of soluble salts, though not excessive, were elevated in all the composts. These salt levels could cause a problem in some soils. Heavy metals were not present in any significant levels. All the grape marc composts analysed provided some benefit in returning nutrients into the vineyard and all were significant potassium sources.

scholarly journals Effects of Long-term Fertilization Systems on Heavy Metals Residues in Sod-podzolic Soil and Oats Yield

2021 ◽  
Author(s):  
D.A. Postnikov ◽  
G.E. Merzlaya ◽  
A.D. Fedulova
Keyword(s):  
Heavy Metals ◽  
Field Experiment ◽  
Podzolic Soil ◽  
Organic Fertilizer ◽  
Cadmium Content ◽  
Calculated Dose ◽  
Mineral Components ◽  
Phosphorus And Potassium ◽  
The Village

Background: The paper presents the results of studies conducted on the basis of the former Smolensk branch of Pryanishnikov Institute of Agrochemistry, in the village of Olsha, Smolensk district, Smolensk region. In a long field experiment, various fertilizer systems were studied, their effect and aftereffect on the qualitative and quantitative crop yield, soil properties.Methods: A stationary field experiment was established in 1978. The aftereffect of fertilization systems on oats has been studied since 2009. The aftereffect was studied in 2015-2016 and 2017. With one dose of organic fertilizer (compost based on cattle manure - cattle), over 30 years of experience, 17.4 tons of organic matter, 435 kg of total nitrogen, 198 kg of phosphorus (P2O5), 621 kg of potassium (K2O) entered the soil. A single calculated dose of nitrogen, phosphorus and potassium corresponded to 25.5 kg of active ingredient per ha-1. Result: With prolonged use of fertilizers, the content of heavy metals in the soil did not exceed the calculated permissible concentration. However, at a fivefold norm (N150P150K150 + 15 t ha-1), the cadmium content was overestimated. An ecologically justified dose of aftereffect in the Smolensk region on sod-podzolic soil should be considered a fourfold dose of mineral components and compost (N120P120K120 + 12 t ha-1).

scholarly journals New coordination compounds of uranyl ion with 3-(2-hydroxyphenyl)-1,2,4-triazole and its derivatives: synthesis and investigation of spectral properties

2015 ◽  
Vol 3 (2) ◽  
pp. 109-114 ◽  
Author(s):  
Oleksandr Vashchenko ◽  
Dmytro Khomenko ◽  
Roman Doroschuk ◽  
Rostyslav Lampeka
Keyword(s):  
Ir Spectroscopy ◽  
Coordination Compounds ◽  
Spectral Properties ◽  
Complex Compounds ◽  
Uranyl Ion ◽  
New Methods ◽  
Coordination Compounds Of Uranyl

New methods of 3-(2-hydroxyphenyl)-1,2,4-triazoles synthesis were developed. Obtained ligands was used for synthesis of three new complex compounds of uranyl-ion with general composition [UO2(HL)2(Solv)]. These compounds were characterized by NMR and IR spectroscopy.

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