Temat: Peat - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Investigation of the Kinetics of the Drying Process of Composite Pellets on a Convective Drying Stand
Autorzy:: Petrova, Zhanna
Sniezhkin, Yurii
Paziuk, Vadym
Novikova, Yuliia
Petrov, Anton
Powiązania:: https://bibliotekanauki.pl/articles/1838289.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: obsolete sludge
peat
biomass
granulation
drying
pellet
Opis:: In Ukraine, the problem of processing and utilization of sludge deposits that are formed during the treatment process at wastewater treatment plants is relevant. Unprocessed sewage sludge merges into overcrowded sludge sites every year, which leads to a deterioration of the environment and living conditions in Ukraine. Therefore, the aim of the work was to study the processing of sludge, the creation of pellets based on their composition with peat and biomass and their drying. The article presents the studies of drying kinetics of composite pellets based on peat, obsolete sludge and biomass on an experimental convective drying stand. The influence of the proportions of the components of the composition on the drying time was determined and the ratio at which the drying time of the pellets is shorter and the pellets are of better quality was selected. A comparison of the drying time of the sludgepeat composition and its components was performed, which shows that during the drying of the composite pellets, the intensification of the drying process is observed. The study related to the effect of the diameter of the pellets on the duration of drying showed that the duration of drying increases along with diameter. The presented comparison of drying kinetics of twoand three-component pellets shows the same nature of the drying curves and the drying time is in the range of 17-18 minutes. The optimal ratio of components for quality granulation was selected. The effective drying regimes of composite pellets based on silt deposits, peat and biomass were determined.
Źródło:: Journal of Ecological Engineering; 2021, 22, 6; 159-166
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Investigation of the Kinetics of the Drying Process of Composite Pellets on a Convective Drying Stand
Autorzy:: Petrova, Zhanna
Sniezhkin, Yurii
Paziuk, Vadym
Novikova, Yuliia
Petrov, Anton
Powiązania:: https://bibliotekanauki.pl/articles/1838371.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: obsolete sludge
peat
biomass
granulation
drying
pellet
Opis:: In Ukraine, the problem of processing and utilization of sludge deposits that are formed during the treatment process at wastewater treatment plants is relevant. Unprocessed sewage sludge merges into overcrowded sludge sites every year, which leads to a deterioration of the environment and living conditions in Ukraine. Therefore, the aim of the work was to study the processing of sludge, the creation of pellets based on their composition with peat and biomass and their drying. The article presents the studies of drying kinetics of composite pellets based on peat, obsolete sludge and biomass on an experimental convective drying stand. The influence of the proportions of the components of the composition on the drying time was determined and the ratio at which the drying time of the pellets is shorter and the pellets are of better quality was selected. A comparison of the drying time of the sludgepeat composition and its components was performed, which shows that during the drying of the composite pellets, the intensification of the drying process is observed. The study related to the effect of the diameter of the pellets on the duration of drying showed that the duration of drying increases along with diameter. The presented comparison of drying kinetics of twoand three-component pellets shows the same nature of the drying curves and the drying time is in the range of 17-18 minutes. The optimal ratio of components for quality granulation was selected. The effective drying regimes of composite pellets based on silt deposits, peat and biomass were determined.
Źródło:: Journal of Ecological Engineering; 2021, 22, 6; 159-166
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Exploring Peat Thickness Variability Using VLF Method
Autorzy:: Zuhdi, Mohd.
Armanto, M. Edi
Setiabudidaya, Dedi
Ngudiantoro, -
Sungkono, -
Powiązania:: https://bibliotekanauki.pl/articles/952479.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: peat depth
VLF method
resistivity
Inv2DVLF
Opis:: This paper tried to prove the capability of a geophysical method, called VLF (very low frequency) for peat thickness variability exploration. The method involved using the VLF receiver to measure the VLF properties emitted by the ground from the study area. The study was carried out in Jambi Province of Indonesia in three different depths of peat area, i.e.; very deep (8–15 m), deep (3–8 m) and shallow (0–3 m) peat. The depth was confirmed by direct measurement. The VLF measurement was done along transects on each areas. The data was processed using NAMEMD (Noise Assisted Multivariate Empirical Mode Decomposition) method and converted into value and depth of resistivity using Inv2DVLF software. The study indicated that the resistivity, shows significant difference (F(2,6317) = 4.525, p = 0.011) between the area of very deep peat and the shallow peat. The resistivity varies according to peat thickness. In the very deep area, it tends to be statistically similar until 7.32 meter depth and starts to differ significantly at the depth of 11.46 meters. In turn, in the area of deep peat, it is statistically similar until 4.72 meter and starts to show differences at 7.32 m depth. However, in shallow area, it does not exhibit the differences as in the area of deep peat. This proved that the VLF method works properly in deep and very deep peat and is capable of indicating the peat thickness.
Źródło:: Journal of Ecological Engineering; 2019, 20, 5; 142-148
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Growth, Flowering and Photosyntetic Pigments of Pelargonium × Hortorum L.H. Bailey ‘Survivor Hot Pink’ and ‘Graffiti Fire’ Grown In Substrates Containing Sewage Sludge Compost
Autorzy:: Zawadzińska, A.
Salachna, P.
Powiązania:: https://bibliotekanauki.pl/articles/124826.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bedding plants
sphagnum peat
rye straw
waste material
Opis:: The aim of this study was to assess usability of composts made of sewage sludge and either straw or leaves used as substrates for growing zonal pelargoniums. The study plants ‘Hot Pink’ cv. of Survivor group and ‘Fire’ cv. of Graffiti group were grown in 5 different substrates. The control substrate was high peat (100%) deacidified with chalk and dolomite up to pH 5.8–6.0 and supplemented with 2.5 g·dm-3 of Azofoska multicomponent fertilizer. The other four substrates contained two types of composts: SSRS – sewage sludge, straw (1:1, v/v) and SSL – sewage sludge, leaves (1:1, v/v), mixed with high peat at two different proportions, 1:3 (v/v) and 1:7 (v/v). Chemical composition of the substrates was investigated and they were supplemented with nitrogen and potassium as recommended for pelargoniums. Plant morphological parameters were evaluated during flowering. They included plant height and diameter, number of shoots and leaves, leaf assimilation area and leaf weight. Leaf chlorophyll and carotenoid content was also estimated. Inflorescence related parameters included inflorescence diameter and inflorescence stem length, number of flowers per inflorescence and flower diameter. All inflorescences formed over 10 weeks of flowering were counted. Plant ornamental value was assessed using a five-score bonitation scale. The investigated composts were found to be useful components of the substrates for zonal pelargonium production. Irrespective of the compost share, the tested substrates significantly affected most of the evaluated morphological traits. The substrate containing the compost made of sewage sludge and straw (SSRS) and peat (1:3, v/v) was found the most beneficial for pelargonium foliage, i.e. the number of leaves, their fresh weight and assimilation area. Leaf chlorophyll and carotenoid content in the pelargoniums grown in the substrates containing either dose of SSRS compost did not differ from the control plants. Substrate type did not affect bonitation score of ‘Survivor Hot Pink’ cultivar. The bonitation score of ‘Graffiti Fire’ cultivar was the highest for plants growing in the substrates with either SSRS or SSL compost plus peat in 1:3 ratio (v/v).
Źródło:: Journal of Ecological Engineering; 2015, 16, 3; 168-176
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Ecological and Economic Efficiency of Peat Fast Pyrolysis Projects as an Alternative Source of Raw Energy Resources
Autorzy:: Tcvetkov, P.
Strizhenok, A.
Powiązania:: https://bibliotekanauki.pl/articles/125216.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: pollution
environment
waste
biomass
energy
pyrolysis
peat
Russia
Opis:: The objective of this review is to find ecologically and economically reasonable method of biomass processing to produce electricity and thermal energy. The major causes of the annual increase in the volume of consumed electricity and thermal energy are the current pace of scientific and technological progress, the overcrowding of cities and industrial agglomeration. Traditional energy sources (coal, oil, gas) have a significant negative impact on the environment, which leads to the deterioration of sanitary-hygienic indicators of the human environment. Besides, prices for traditional energy resources are increasing due to the decline of easy produced stocks. The goal of this article is the investigation and evaluation of environmental and economic efficiency of biomass fast pyrolysis methods for as modern energy resources. The result of the review is the choice of biomass fast pyrolysis as the most environmentally reasonable and economically viable local method of producing electricity and thermal energy in Russia. This method is more eco-friendly, compared to other alternative energy sources, for example using peat as solid fuel.
Źródło:: Journal of Ecological Engineering; 2016, 17, 1; 56-62
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Efficiency of Sorbents Application for the Decrease of the Residual Content of Oil Products in the Industrial Waste
Autorzy:: Tarasova, Svetlana
Gaevaya, Elena
Bytsko, Anastasia
Powiązania:: https://bibliotekanauki.pl/articles/1839553.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bore mud
oil product
sorbent
peat
sorption capacity
cultures-phytomeliorants
Opis:: Well drilling involves the formation of the bore mud in a form of drilled solids with waste drilling mud, containing oil products in its structure. Nowadays, the widely used methods such as thermal, physical and biological ones cannot be considered as complex approach to the solution of the problem of the oil refinery wastes handling. Introduction of the peat and natural mineral sorbents into the bore mud allows decreasing the residual content of the oil products, and, thus, decreasing the level of negative influence on the environment. On the basis of the conducted studies, it was revealed that different norms of sorbents and peat introduction into the bore mud decreased the concentration of oil products equally well; therefore, the recommended dosage of sorbents and peat at the low initial values of oil products can be 3–5%. When introducing glauconite in a form of flour and grain there it noted that the size of grain particles of the sorbent influenced insignificantly the decrease of oil products concentration in the bore mud. The use of natural mineral sorbents and peat favorably influences the development of plants. At the same time, the formation of viable phytocenosis with high value of phytomass of vegetative over-ground sprouts takes place.
Źródło:: Journal of Ecological Engineering; 2021, 22, 1; 36-40
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Finding Strategies for Peatland Rehabilitation; Agroforestry Systems on Various Types of Peat Depth in Three Villages in Central Kalimantan
Autorzy:: Rotinsulu, Johanna Maria
Afentina, -
Yanarita, -
Indrayanti, Lies
Nursiah, -
Dewi, Sevana
Powiązania:: https://bibliotekanauki.pl/articles/2026749.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: agroforestry system
peat land rehabilitation
local community
climate change mitigation
Opis:: Peatland rehabilitation is an urgent need in order to minimize the effects of peat degradation and to support climate change mitigation. However, the rehabilitation of degraded peatlands still faces many obstacles. This study aimed to study the agroforestry system on peatlands applied by traditional communities as an effort to discover a peatland rehabilitation strategy. This research was conducted in the Pilang, Tanjung Taruna, and Kalampangan villages from February to August 2019. The data in this study were obtained through field observations, interviews with the community, and Focus Group Discussion. The data was then synthesized using descriptive statistics. The results of data analysis showed that in the study area, six types of agroforestry systems were found. Communities develop different agroforestry systems at various types of peat depths. Farmers develop vegetable and fruit-based agroforestry on shallow peat, rubber-based agroforestry, annual crops and fruit on medium peat, fruit and rubber forestry plants on deep peat. Most farmers planted endemic species including Rubber (Havea braziliensis), Galam (Melaleuca leucadendra) and Gerunggang (Cratoxylum arborescens). The results of this study can be adopted as a peatland rehabilitation strategy since they are in accordance with the socio-culture of the local community and capable to accommodate economic and conservation interests.
Źródło:: Journal of Ecological Engineering; 2022, 23, 2; 150-158
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Phosphorus Accumulation in the Dehydrated Peat Soils of the Liwiec River Valley
Autorzy:: Becher, Marcin
Pakuła, Krzysztof
Jaremko, Dawid
Powiązania:: https://bibliotekanauki.pl/articles/123721.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: peatland
peat soil
secondary transformation process
phosphorus forms
soil horizon
Opis:: The aim of the research was to complement the knowledge on profile distribution and accumulation of phosphorus forms in the soils changed under the influence of secondary organic matter transformation process in dehydrated peatlands. The soil research was carried out in the upper Liwiec river valley in the middle-east of Poland. In the soil material taken from the moorsh (M1, M2, M3) and peat (O) horizons of the Murshic Histosols, the physical and chemical properties were determined and the soil phosphorus fractions with different activity in the environment by sequential extraction method were separated. The profile distribution of the total phosphorus content (TP) and values of carbon/phosphorus (TC/TP) ratio were characteristic for dehydrated peat soils included in the secondary transformation process (M1>M2>M3>O). This process also increased the contribution of the available phosphorus forms (NH4Cl-P), forms bound on the surface of iron (III) and manganese (IV) oxides and hydroxides (redox-P), as well as mineral (mHCl-P) and organic (oHCl-P) forms separated by 0.5 M HCl. Significant accumulation of the phosphorus compounds in the moorsh horizons of the investigated soils can be considered as a potential threat to the natural environment of the studied area due to the risk of decomposition of the phosphorus compounds when the area will be rehydrated.
Źródło:: Journal of Ecological Engineering; 2020, 21, 5; 213-220
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Environmental and Practical Aspects of the use of Peat for Agriculture and Energy Aims
Autorzy:: Kowalczyk-Juśko, A.
Onuch, J.
Kościk, B.
Skowron, P.
Chołody, M.
Kosidło, A.
Rawski, J.
Powiązania:: https://bibliotekanauki.pl/articles/124083.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: peat
physical properties
energy value
power generation
improving soil quality
Opis:: The aim of this study was to evaluate physical and energetic parameters of peat. Utility of the peat in horticulture and power generation were also estimated. Peat was mined from the Klejniki deposit, (Hajnówka municipality, Podlaskie province) in the north-eastern part of Poland. It was found that peat can be used for power generation, in the air-dry moisture condition. Peat parameters are similar to lignite. It can also be suitable for the production of horticultural substrates and incorporated into soil as a component for improving physical and chemical properties. The examined peat fulfills the requirements of for agricultural applications.
Źródło:: Journal of Ecological Engineering; 2016, 17, 4; 138-142
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The new localities of rare species neidium hercynicum mayer on the peatland areas of southern and south-eastern Poland
Autorzy:: Noga, T.
Stanek-Tarkowska, J
Peszek, Ł.
Pajączek, A
Kochman, N
Powiązania:: https://bibliotekanauki.pl/articles/124776.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: neidium hercynicum
new localities
peat bogs
Orawsko-Nowotarska Basin
„Międzyrzeki” Reserve
Opis:: The studies were conducted on watercourses flowing out of raised peat bog areas in Orawsko-Nowotarska Basin and raised peat bogs and transitional moor in „Międzyrzeki” Reserve on the territory of the Roztocze National Park. New localities where Neidium hercynicum occurred were found on the peatland areas of Southern Poland (Orawsko-Nowotarska Basin) and South-eastern (the Roztocze National Park) during the studies conducted on Jamów, Tokarka and Chyżny streams and on the territory of “Międzyrzeki” Reserve between 2007–2013. Longer and wider specimens were found on both investigated sites in comparison to the dimensions listed in the Krammer and Lange-Bertalot key. N. hercynicum were always found as individual specimens.
Źródło:: Journal of Ecological Engineering; 2014, 15, 3; 64-69
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Charakterystyka procesu adsorpcji azotetrazolanu w gruntach organicznych na przykładzie torfu
Characteristic of adsorption of azotetrazolate on organic soil (peat)
Autorzy:: Borkowski, A.
Rydelek, P.
Szala, M.
Powiązania:: https://bibliotekanauki.pl/articles/400556.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: azotetrazolany
grunty organiczne
izotermy adsorpcji
torf
adsorption isotherms
azotetrazolate
organic soil
peat
Opis:: W prezentowanej pracy przedstawiono wyniki badań dotyczących procesu adsorpcji azotetrazolanu w gruntach organicznych. Sole azotetrazolu są przykładem heterocyklicznych związków organicznych, w których zawartość azotu w cząsteczce przekracza 80% masowych. Z tego względu, oraz z uwagi na wysoką stabilność termiczną, azotetrazole i ich sole są obecnie intensywnie badaną grupą związków wysokoenergetycznych o potencjalnie szerokich zastosowaniach zarówno w technice cywilnej jak i wojskowej. Nie mniej istotnym aspektem zainteresowań tymi związkami są zagadnienia związane z procesami migracji i kumulacji w środowisku naturalnym. Wyniki przeprowadzonych oznaczeń wskazują na względnie słabą adsorpcję azotetrazolanu w badanych gruntach organicznych. Maksymalne pokrycie powierzchni adsorbentu (torfu) monomolekularną warstwą azotetrazolanu wg modelu Langmuira wyniosło 0,016 mol kg-1, podczas gdy adsorpcja na węglu aktywnym (Merck) wyniosła 0,23 mol kg-1. Niska wartość maksymalnej ilości azotetrazolanu, jaką mogły zaadsorbować badane grunty może wiązać się z dysocjacją azotetrazolanu amonu w roztworze wodnym, czego efektem jest powstanie anionu azotetrazolanowego. Ujemne naładowanie tego jonu może być jedną z przyczyn utrudnionej adsorpcji tego związku do powierzchni cząstek glebowych.
The paper presents results of studies on the adsorption of azotetrazolate on organic soil. Azotetrazolate salts are examples of heterocyclic organic compounds, in which the nitrogen content in the molecule exceeds 80% by mass. Therefore, and due to the high thermal stability, azotetrazole and their salts are now intensively studied group of compounds with potentially broad applications in both civil engineering and the military, which may potentially be connected with environmental contamination of ground water. The results of presented studies indicate a relatively weak adsorption of azotetrazolate on the investigated organic soils. The low value of the maximum amount of adsorption of azotetrazolate probably is involved with the dissociation of ammonium azotetrazolate in aqueous solution, resulting in the formation of the azotetrazolate anion. The negative charge of this ion may be one reason more difficult adsorption of this compound on the surface of soil particles.
Źródło:: Inżynieria Ekologiczna; 2012, 29; 17-25
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Eco-Friendly Principles on the Extraction of Humic Acids Intensification from Biosubstrates
Autorzy:: Malyushevskaya, Antonina
Koszelnik, Piotr
Yushchishina, Anna
Mitryasova, Olena
Mats, Andrii
Gruca-Rokosz, Renata
Powiązania:: https://bibliotekanauki.pl/articles/2202369.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: eco-friendly technology
environmental security
extraction
electric discharge
humic acid
biosubstrate
peat
Opis:: It is necessary to find innovative ways to improve the environmental performance of production processes and products. The technology of extracting valuable components from raw materials of plant origin is often used in technological processes of the food, pharmaceutical, chemical and other industries. Extraction is the most energy intensive step. The factors contributing to the extraction of humic acids from plant substrates under the action of electric discharge were studied. The purpose of the work was to study the efficiency of humic acids extraction from the biosubstrate under the action of electric discharges. The physical experiment showed that the main factor influencing the intensity of extraction is the degree of grinding of the solid phase of the biosubstrate-water suspension. The efficiency of electric discharge grinding depends on the pressure amplitude at the distance of the inner radius of the chamber and the number of discharge pulses. It was established that the number of chemical reagents (alkalis), usually used in the process of extracting humic acids from peat, can be reduced many times due to the appearance of radicals and peroxide compounds in the peat-water suspension resulting from the action of an electric discharge. The prospects of the non-thermal electric discharge method of intensification of the extraction of humic acids from biosubstrates were determined.
Źródło:: Journal of Ecological Engineering; 2023, 24, 2; 317--327
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Changes of the Physical-Waters Properties of Murshic Endofibric Histosols in the Aspect of Long-Term Investigation on the Drainage Object Supraśl Dolna
Autorzy:: Kiryluk, A.
Powiązania:: https://bibliotekanauki.pl/articles/125131.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: peat
diagnostic layer
ground water level
moisture content
full water capacity
bulk density
Opis:: The paper deals with the study upon changes within the physical and water properties of murshic endofibric histosols in the drainage meadow object Supraśl Dolna. The scope of studies includes the description of the soil profiles, thickness of diagnostic layer, bulk density, full water capacity, porosity, ash content, and peat decomposition. The long-term investigation carried out in 1982–2015 allows for observing the changes within these soils. The changes were studied in two habitats: wet and dry. In wet habitat, the groundwater flowed 30–98 cm below land surface and supplied the rhizosphere zone. Dynamics of groundwater surface were dependent on the size of precipitation during vegetation period and peat decomposition degree within the soil profile. In the dry habitat, the level of groundwater decreased up to 110 cm (below peat layer). Adverse water conditions in the dry habitat (temporal and long-term water deficiency) caused the increase in bulk density to 0.405 g·cm-3; simultaneously, a decrease in full water capacity to 82.5%, as well as faster peat mineralization occurred. In wet habitat, physical and water properties of murshic endofibric histosols were not significantly altered. In order to inhibit the peat decomposition rate and delay the peatland degradation, optimum moisture content should be maintained within the soil profile along with rational meadow management.
Źródło:: Journal of Ecological Engineering; 2017, 18, 5; 90-95
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Adsorpcja 3,6-dihydrazynotetrazyny (dhtz) w utworach torfowych
Adsorption of 3,6-dihydrazinotetrazine (dhtz) on organic soil (peat)
Autorzy:: Rydelek, P.
Borkowski, A.
Szala, M.
Powiązania:: https://bibliotekanauki.pl/articles/400380.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: dihydrazynotetrazyna
gleby organiczne
izotermy adsorpcji
torf
adsorption isotherms
3,6-dihydrazinotetrazine
organic soil
peat
Opis:: Coraz powszechniejsze poszukiwania nowoczesnych materiałów wysokoenergetycznych oraz idące w ślad za tym ich stosowanie na skalę techniczną pociąga za sobą istotne zagrożenia związane z możliwością skażenia środowiska naturalnego. Obecnie intensywnie badaną grupą materiałów wysokoenergetycznych są m.in. związki heterocykliczne zawierając azot w cząsteczce. Badania wpływu niektórych z tej grupy związków na wzrost i rozwój mikroorganizmów w glebie jednoznacznie wskazują na ich potencjalne możliwości znacznej modyfikacji aktywności biochemicznej w tym środowisku [Zerulla i wsp. 2001; Yu i wsp. 2007]. Wcześniejsze badania wpływu dihydrazynotetrazyny na aktywność mikrobiologiczną i enzymatyczną w glebie [Borkowski i Szala 2010; Borkowski i wsp. 2011] wykazały, że związek ten z jednej strony charakteryzuje się dużą toksycznością w stosunku do bakterii glebowych in vitro, z drugiej strony wykazuje nieznaczne tylko właściwości hamujące aktywność dehydrogenaz oznaczanych bezpośrednio w glebie. Prezentowane badania adsorpcji DHTz w wybranych glebach organicznych zostały wykonane z zastosowaniem modelu Langmuira oraz modelu Freundlicha. Umożliwiło to wyznaczenie podstawowych parametrów charakteryzujących proces adsorpcji DHTz. Otrzymane wyniki wskazują na znaczny proces sorpcji tego związku w badanych glebach, na co wskazuje parametr maksymalnego pokrycia powierzchni sorbentu wg modelu Langmuira, który wyniósł maksymalnie 0,079 mol kg-1 w badanych próbkach torfu (w zakresie stężeń równowagowych do 0.0004 mol kg-1). Warto dodać, że w badaniach porównawczych, dla węgla aktywnego (Merck) otrzymano wynik tylko cztery razy większy: 0,32 mol kg-1.
At present intensively studied group of high-energetic materials are heterocyclic compounds containing nitrogen in the molecule. Research on the influence of some of this group of compounds on the growth of microorganisms in the soil clearly indicate their potential role in significant modification of the biochemical activity in this environment. Earlier studies on 3,6-dihydrazinotetrazine and their impact on microbial and enzymatic activity in soil have shown that this compound, on the one hand is characterized by high toxicity in relation tosoil bacteria in vitro, but on the other hand one weakly affect the activity of dehydrogenases measured directly in the soil. This may suggest the significant adsorption of DHTz on the soil. In this paper the presented studies of adsorption of DHTz on selected organic soils have been carried out using the Langmuir model and Freundlich model. The results indicate a considerable process of adsorption of this compound on the studied soils, as indicated by the parameter of the maximum coverage of the adsorbent surface by adsorbate according to Langmuir model.
Źródło:: Inżynieria Ekologiczna; 2012, 29; 153-161
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Budowa i rozwój torfowiska Moskal w północnej części Puszczy Knyszyńskiej
The structure and development of the Moskal peatbog in the northern part of Puszcza Knyszyńska Forest
Autorzy:: Micun, K.
Karpowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/400571.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: torfowiska
Puszcza Knyszyńska
analiza makroszczątków
Puszcza Knyszyńska Forest
analysis of plant remains
peat bogs
Opis:: W pracy podjęto próbę rozpoznania budowy, określenia zbiorowisk fosylnych i na tej podstawie poznania genezy i rozwoju torfowiska Moskal w północnej części Puszczy Knyszyńskiej. Współczesną powierzchnię torfowiska buduje torf wysoki torfowcowo-kępkowy. Prawiecały obszar porasta sosnowy bór bagienny Vaccinio uliginosi - Pinetum z gatunkami podlegającymi ochronie, takimi jak: bagno zwyczajne (Ledum palustre), rosiczka okrągłolistna (Drosera rotundifolia). W budowie torfowiska wyróżniono gatunki torfu: turzycowiskowy, torfowcowo-turzycowy, brzezinowy, sosnowo-torfowcowy, wełniankowo-torfowcowy, wełniankowy i torfowcowo-kępowy. Stopień rozkładu torfu wynosi średnio dla torfów niskich 25,8%, przejściowych 43,7%, wysokich 27,2%. Torfowisko Moskal wypełnia południowy fragment rozległego obniżenia wytopiskowego, utworzonego w trakcie deglacjacji lądolodu zlodowacenia warty. Proces tworzenia się złoża torfowiska zainicjowany został ponad 5000 lat temu w schyłkowej fazie okresu atlantyckiego. Początkowe podmoklisko, po zwiększeniu wilgotności w początkach subboreału, przekształciło się w turzycowisko, a następnie w torfowisko przejściowe. Torfy wysokie zaczęły się tworzyć w schyłkowej fazie subboreału. Torfowisko nadal jest w fazie akumulacji.
The purpose of present research was recognition of structure, determination of fossil assemblages and on this basis, study of genesis and development of Moskal peatbog in the northern part of Puszcza Knyszyńska Forest. Contemporary surface of peatbog is made of sphagnum peat. Almost whole area is overgrown with swamp forest (Vaccinio uliginosi - Pinetum) with protected species like Ledum palustre or Drosera rotundifolia. The average peat's thickness was determined as 1,5 m, 3 m in maximum. The deposit is of a layered structure. In the structure, seven sorts of peats have beendefined: one kind of a fen type - Magnocaricetum peat, two of a transitional type - sedge peat and birch peat, and four of raised bog type: pine-sphagnum, cotton-grass - sphagnum, cotton-grassand sphagnum-clump peat. The degree of peat's decay equals averagely: for fens - 25,8%, transition bogs - 43,7%, raised bogs - 27,2%. The Moskal peatbog fills a southern part of a wide melt-out depression, created during the deglaciation of Warta Glaciation's ice-sheet. Process of creation of peatbog's deposit began over 5000 years ago in the declining phase of atlantic period. Existing wetland, after the increase of its humidity in the beginnings of subboreal, transformed into low sedge fen and later into transitional peatland. Raised bogs began to emerge in the ending phase of subboreal and they were formed during the whole Sub-Atlantic period. The peatbog is still in the phase of Sphagnum peat accumulation.
Źródło:: Inżynieria Ekologiczna; 2012, 29; 99-109
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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