scholarly journals Evaluation of KTT-2 Pneumatic Peat Harvesting Machine’s Nozzle Suction Capacity

2020 ◽  
Vol 174 ◽  
pp. 01044
Author(s):  
Alexander Yablonev ◽  
Darya Scherbakova
Keyword(s):  
Operating Time ◽  
Flow Speed ◽  
Active Area ◽  
Suction Velocity ◽  
High Moor ◽  
Milled Peat ◽  
Basic Parameters ◽  
Suction Flow ◽  
Diagram Analysis ◽  
High Moor Peat

Milled peat harvesting with pneumatic harvesting machines has a number of doubtless advantages over mechanical harvesting: operating time decreases down to 1 day, additional milling of wet peat deposit during the harvesting is not needed, list of necessary machinery decreases. However, in the late 1980s, due to the imperfection of the design of pneumatic machines, this method began to be used less and less frequently. Market appearance of KTT-2 and MPTU-30 pneumatic harvesting machines promoted their introduction into operating processes of peat extractive companies. According to feedback from operators, these machines work well with high-moor peat but work much worse with low- moor peat which is of higher density. One of basic parameters of pneumatic harvesting is suction velocity, that’s why field experiment for evaluation of KTT-2 machine suction nozzle performance was held. Experiment results enabled us to plot velocity diagram of suction flow and find maximum suction velocity: 26.74 m/s. Velocity diagram analysis showed distance from the nozzle – air flow speed relation. We calculated size of suction flow’s active area and offered methods of active area sizing.

scholarly journals The Effect of Neutralising Materials on the Reaction of the Peat Substrate Medium when Growing Ball-Rooted Seedlings

2021 ◽  
Vol 24 (3) ◽  
pp. 58-67
Author(s):  
Siarhei Rabko ◽  
Ivan Kimeichuk ◽  
Siarhei Surauyou ◽  
Vasyl Khryk ◽  
Svitlana Levandovska
Keyword(s):  
Electrical Conductivity ◽  
Wood Species ◽  
High Quality ◽  
Planting Material ◽  
High Moor ◽  
Milled Peat ◽  
Substrate Ph ◽  
Substrate Medium ◽  
High Moor Peat

The use of various types of neutralising materials in the cultivation of standard planting material of high-quality forest wood species has a significant effect on substrate acidity. Therefore, the study sets a goal to select peat substrates with different dosages of the neutralising component and determine their effect on the reaction of the peat substrate medium. The paper presents the results of the influence of neutralising materials of dolomitic meal and chalk of various doses with the use of mineral fertilisers. Dolomitic meal was used as a neutralising component, the pH of the peat substrate was 6.6 and chalk was 7.5. It was found that when neutralising a peat substrate created based on high-moor milled peat (pH 2.5) with the introduction of dolomitic meal in doses of 2-4 kg/m3 (European spruce), 3-4. 5 kg/m3 (Scots pine), optimal acidity can be achieved in a month. An increase in the concentration of lime material was recorded, which leads to an increase in the neutralisation of the substrate at a dose of 2.5 g and 3.0 g per 125 g of peat. The best indicators were demonstrated by options of doses of 1.5-2.5 g per 125 g of peat for 7-8 days of use and a dose of 3.0 g per 125 g of peat for 5-6 days compared with the control. An increase in the concentration of chalk in the neutralising material from 30% to 70% leads to a faster deoxidation of the substrate (pH 3.2), and an increase in the dosage of chalk increases substrate neutralisation. The electrical conductivity of the substrate at a dosage of 6-8 kg/m3 when applying chalk and dolomitic meal increases by 1.6-2.0 and 1.2-1.4 times, respectively. At the rate of application of 6-10 kg/m3, it has a lesser effect on the change in the electrical conductivity of the high-moor peat, and the introduction of dolomitic meal 2-4.5 kg/m3 into the milled peat during neutralisation does not lead to a change in the electrical conductivity of the peat. This data allows choosing neutralising materials of a certain concentration that will enable the cultivation of standard planting material of European quality and thereby ensure the proper quality of future stands

Biologically Active Extractives of High-Moor Peat of Northern European Russia

Vestnik RFFI ◽  
2016 ◽  
Author(s):  
Svtelana B. Selyanina ◽  
◽  
Marina V. Trufanova ◽  
Svtelana A. Zabelina ◽  
Mikhail V. Bogdanov ◽  
...  
Keyword(s):  
European Russia ◽  
Biologically Active ◽  
Northern European ◽  
High Moor ◽  
Northern European Russia ◽  
High Moor Peat

scholarly journals Influence of increasing nickel content in soil on Miscanthus × giganteus Greef and Deu. Yielding and on the content of nickel in above-ground biomass / Wpływ wzrastającej zawartości niklu w glebie na plonowanie Miscanthus x giganteus Greef i Deu. i zawartość niklu w nadziemnej biomasie

2015 ◽  
Vol 41 (1) ◽  
pp. 72-79
Author(s):  
Maciej Bosiacki
Keyword(s):  
Nickel Content ◽  
Mineral Soil ◽  
Nickel Sulfate ◽  
First Year ◽  
Above Ground Biomass ◽  
Miscanthus X Giganteus ◽  
Miscanthus Giganteus ◽  
High Moor ◽  
High Nickel ◽  
High Moor Peat

Abstract The aim of the research conducted in a 2-year pot experiment in an unheated plastic tunnel was to determine suitability of Miscanthus × giganteus for phytoextraction of nickel from soil as well as to assess tolerance of this species on increasing concentrations of this metal in soil. Pots were filled with mineral soil (sand) and a mixture of soil with high-moor peat and three levels of nickel were introduced, i.e. 75 mg dm-3, 150 mg dm-3 and 600 mg dm-3 and the control combinations used substrates without the addition of nickel. Nickel was introduced only in the first year of the experiment in the form of nickel sulfate (NiSO4 · 6H2O). Miscanthus × giganteus accumulated a considerable amount of nickel in biomass. Miscanthus × giganteus growing in contaminated mineral soil turned out to be a species tolerant to high nickel concentrations

Development of a New Technology of Environmental Purification from Naphthalene

2015 ◽  
Vol 1085 ◽  
pp. 154-160 ◽  
Author(s):  
Lev V. Nechaev ◽  
Olga N. Tchaikovskaya ◽  
Elizaveta V. Maltseva ◽  
Natalya V. Yudina
Keyword(s):  
Humic Acids ◽  
New Technology ◽  
Luminescent Properties ◽  
Structural Group ◽  
High Moor ◽  
Molecular Masses ◽  
Spectral And Luminescent Properties ◽  
Group Compositions ◽  
The Given ◽  
High Moor Peat

Results of investigation of naphthalene interaction with humic acids of high-moor peat and their fractions are presented in the article. The elemental and structural-group compositions of humic acids of high-moor peat and of their fractions are determined, average values of their molecular masses are found, and their spectral and luminescent properties are investigated. Numerical values of constants of naphthalene interaction with humic acids and their fractions are calculated, and the polarity of naphthalene microenvironment in solutions of humic acids is estimated. The results of investigations suggest that the maximum affinity of naphthalene is observed to the fraction of hematomelanic acids and that the naphthalene microenvironment in solutions of the given fraction is polar.

Oxygen-containing organic compounds of the bituminous components of high-moor peat from the south of Western Siberia

2014 ◽  
Vol 48 (2) ◽  
pp. 85-91 ◽  
Author(s):  
E. B. Strel’nikova ◽  
O. V. Serebrennikova ◽  
Yu. I. Preis
Keyword(s):  
Organic Compounds ◽  
Western Siberia ◽  
The South ◽  
High Moor ◽  
High Moor Peat

scholarly journals STABILIZING ABILITY OF HUMIC SUBSTANCES AND MICRO-ORGANISMS OF THE GENUS RHODOCOCCUS IN THE RELATION TO OIL PRODUCTS

2020 ◽  
pp. 112-123
Author(s):  
Мария Михайловна Герцен ◽  
Елена Дмитриевна Дмитриева
Keyword(s):  
Humic Substances ◽  
Rhodococcus Erythropolis ◽  
Oil Products ◽  
Oil Hydrocarbons ◽  
High Moor ◽  
Micro Organisms ◽  
High Moor Peat

Изучено влияние микроорганизмов рода Rhodococcus на стабилизирующую способность гуминовых веществ торфов по отношению к углеводородам нефти. Установлено, что наиболее стабильными являются водные эмульсии гексадекана и нефти в присутствии микроорганизмов Rhodococcus erythropolis S67 и гуминовые вещества тростникового низинного торфа, а по отношению к водной эмульсии дизельного топлива - гуминовые вещества сфагнового верхового торфа и Rhodococcus erythropolis Х5. Доказано, что полученная биокомпозиция на основе гуминовых веществ торфов и микроорганизмов рода Rhodococcus способна стабилизировать эмульсии углеводородов нефти в воде за счет связывания их гуминовыми веществами торфов в нетоксичные комплексы. The effect of microorganisms of the genus Rhodococcus on the stabilization ability of humic substances of peats in the relation to oil hydrocarbons was studied. It was found that the most stable aqueous emulsions of hexadecane and oil in the presence of microorganisms Rhodococcus erythropolis S67 and humic substances of reed fen peat and emulsion in the relation to fuel - humic substances of sphagnum high-moor peat and Rhodococcus erythropolis X5 . It is proved that the obtained biocomposition based on humic substances of peats and microorganisms of the genus Rhodococcus is able to stabilize emulsions of oil hydrocarbons in water by binding them with humic substances of peat to non-toxic complexes.

scholarly journals THE INFLUENCE OF HUMIC ACIDS IN THE PRESENCE OF OIL-DEGRADING MICROORGANISMS OF THE GE-NUS RHODOCOCCUS ON THE SOWING QUALITIES OF COCKWEED IN OIL POLLUTION

2020 ◽  
pp. 291-298
Author(s):  
Mariya Mikhaylovna Gertsen ◽  
Elena Dmitrievna Dmitrieva
Keyword(s):  
Humic Acids ◽  
Oil Pollution ◽  
Complete Removal ◽  
Negative Effects ◽  
Oil Biodegradation ◽  
Test Culture ◽  
High Moor ◽  
Resistance To Stress ◽  
Positive Effect ◽  
High Moor Peat

By the method of biotesting, it has been established that the addition of oil-degrading microorganisms of the genus Rhodococcus to the soil contaminated with hydrocarbonshas a positive effect on morphogenesis and sowing qualities of the cockweed test culture, which is associated with the microbiological oxidation of oil by bacteria of the studied strains. It was revealed that a positive effect was observed in 5 of 8 variants of the experiment on the medium with hexadecane with the joint introduction of humic acids and microorganisms. Under the conditions of oil pollution, the introduction of Rh. erythropolis X5 and Rh. erythropolis S67 microorganisms into the substrate with the addition of humic acids as a whole has a stimulating effect on the morphogenesis and sowing qualities of cockweed. It should be noted that it was in the “oil + humic acids + microorganism” variant that the indicators were obtained that maximally exceeded the values of the contaminated control. Reducing the toxicity of oil and hexadecane, and in some cases, the complete removal of the negative effects of toxicants in the relation to the test culture are apparently connected with the intensification of the process of oil biodegradation due to the stimulating effect of humic acids on the microorganisms. It is proved that the introduced humic acids act as adaptogens in the relation to the microorganisms Rh. erythropolis X5 and Rh. erythropolis S67, increasing their resistance to stress loads under conditions of oil stress. Thus, the results show that the introduction of humic acids can contribute to more effective biodegradation of oil pollution of soils. At the same time, in order to increase the efficiency of humic acids, the use of humic acids of sphagnum transitional peat + Rh.erythropolis X5, humic acids of sphagnum high-moor peat + Rh. erythropolis X5, humic acids of reed fen peat + Rh. erythropolis S67 in the conditions of oil pollution seems more promising. On a substrate with hexadecane, it is advisable to consider the use of humic acids of sphagnum high-moor peat, because in this variant, the parameters that maximally exceed the contaminated control were noted.

scholarly journals Optimization Of Plant Development In Case Of Soil Salinization

2021 ◽  
Vol 03 (02) ◽  
pp. 24-29
Author(s):  
Vitaly Igorevich Savich ◽  
◽  
Hafiza Tuymurodovna Artikova ◽  
Shavkatullo Shukurovich Nafetdinov ◽  
Khilola Hamroevna Salimova ◽  
...  
Keyword(s):  
Plant Development ◽  
Crop Residues ◽  
Soil Layer ◽  
Soil Salinization ◽  
Organic Fertilizers ◽  
Saline Soils ◽  
Water Extracts ◽  
High Moor ◽  
High Moor Peat

This article discusses the improvement of the development of biotests in saline soils with the addition of zeolite, phosphogypsum, organic fertilizers. The development of biotests on seawater with a concentration of 1-10 g / l improved when humates, KNO3, and water extracts from crop residues were added to the water. A decrease in the salinity of the upper soil layer is shown when an interlayer with large pores from high moor peat is created at a depth of 25 cm.

Performance and Radial Loading of a Mixed-Flow Pump Under Non-Uniform Suction Flow

2009 ◽  
Vol 131 (5) ◽  
Author(s):  
B. P. M. van Esch
Keyword(s):  
Velocity Profile ◽  
Radial Force ◽  
Rotor System ◽  
Flow Profile ◽  
Centrifugal Pumps ◽  
Mixed Flow ◽  
Pipe Bend ◽  
Suction Velocity ◽  
Suction Flow ◽  
Flow Pump

Many centrifugal pumps have a suction velocity profile, which is nonuniform, either by design like in double-suction pumps, sump pumps, and in-line pumps, or as a result of an installation close to an upstream disturbance like a pipe bend. This paper presents an experimental study on the effect of a nonuniform suction velocity profile on performance of a mixed-flow pump and hydrodynamic forces on the impeller. In the experiments, a newly designed dynamometer is used, equipped with six full Wheatstone bridges of strain gauges to measure the six generalized force components. It is placed in between the shaft of the pump and the impeller and corotates with the rotor system. A high accuracy is obtained due to the orthogonality of bridge positioning and the signal conditioning electronics embedded within the dynamometer. The suction flow distribution to the pump is adapted using a pipe bundle situated in the suction pipe. Results of measurements show the influence of the suction flow profile and blade interaction on pump performance and forces. Among the most important observations are a backward whirling motion of the rotor system and a considerable steady radial force.

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