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    Wyświetlanie 1-11 z 11
    Tytuł:
    Study of Microbiological Processes in the Soil of a Two-Year Fallow
    Autorzy:
    Malynovska, Iryna
    Tkachenko, Mycola
    Bulgakov, Volodymyr
    Ptashnik, Mykhailo
    Ivanovs, Semjons
    Powiązania:
    https://bibliotekanauki.pl/articles/2202367.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    microbiocenosis
    fallow
    mineralisation
    humus
    phytotoxicity
    Opis:
    A high degree of ploughing the soils is a destabilization factor of agrolandscapes and intensification of the erosion processes. Therefore, there arises a need to study the direction of the soil processes during the transfer of the arable land into a state of fallow. The state of microbiocenosis of a two-year-old abandoned land (fallow) was investigated using the gray forest soil in the variants of spontaneous overgrowth, sowing of grass mixtures and sowing of grass mixtures with simultaneous optimization of mineral nutrition of the phytocenosis as an example. It has been established that the least stable microbiocenosis is formed during the cultivation of the grass mixtures, which is characterized by the minimum total number of microorganisms (647.1 million CFU•g–1 of absolutely dry soil) and the minimum number of significant relations between the constituents (components) of the microbial community (98). The total number of microorganisms in the microbiocenosis of the spontaneous overgrowth variant and the legume-grass mixture exceeds that of the cereal grass mixture variant by 6.29 and 34.8%, respectively. A similar indicator for the total number of significant relations was 4.08%. Application of mineral fertilizers intensifies the process of mineralization of nitrogen compounds and slows down the consumption of the soil organic matter in the variants of sudden recovery of phytocenosis and cultivation of the legume-cereal grass mixture. The soil of the variant of the grass mixture is characterized by minimum total biological activity; it is 1.33 and 33.2% lesser than the total biological activity of the variants of spontaneous overgrowth and cultivation of the legume-grass mixture.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 2; 309--316
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geochemistry and tectonic setting of the volcanic host rocks of VMS mineralisation in the Qezil Dash area, NW Iran : implications for prospecting of Cyprus-type VMS deposits in the Khoy ophiolite
    Autorzy:
    Imamalipour, Ali
    Barak, Samaneh
    Powiązania:
    https://bibliotekanauki.pl/articles/2058590.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    geochemistry
    massive sulphide mineralisation
    IAT
    ophiolite
    Khoy
    Iran
    Opis:
    The uppermost part of the Khoy ophiolite includes submarine volcanic lavas. These rocks are found as two different types including basaltic pillow lavas and andesitic to andesitic basalt massive-sheet lavas known as the Qezil Dash unit. These last rocks host volcanogenic massive sulphide mineralisation (VMS). Concordant small lenticular massive sulphides associated with widespread stockworks, extensive wall rock alteration and simple mineralogical parageneses are characteristic of this mineralisation. The Qezil Dash lavas are characterized by HFSE depletion (such as in Nb, Zr, and Hf) and LILE enrichment, low Yb, Y and Ni contents and low Zr/Hf and Nb/Ta ratios. These rocks have low Ti contents and are of LKT type. These geochemical characteristics can be interpreted as indicating SSZ magmatism and suggesting that the Qezil Dash rocks belong to an early stage of island arc formation. Geochemically, this host rock is comparable with the Lasail unit, part of a volcanic sequence within the Oman ophiolite. In the Troodos and Oman ophiolites VMS mineralisation has occurred at the contacts of MOR-basalt and island arc tholeiite (IAT) lavas, so prospecting for VMS deposits in the Khoy area should be estabilished based on geochemical investigations of the volcanic rocks and recognition of their field boundaries.
    Źródło:
    Geological Quarterly; 2019, 63, 3; 435--448
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isotopic Re-Os age of molybdenite from the Szklarska Poręba Huta Quarry (Karkonosze, SW Poland)
    Autorzy:
    Mayer, W.
    Creaser, R. A.
    Mochnacka, K.
    Oberc-Dziedzic, T.
    Pieczka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059392.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Karkonosze granite
    hydrothermal mineralisation
    Re/Os isotopic age
    Opis:
    New Re/Os isotopic data for molybdenite from the Szklarska Poręba Huta Quarry provide ages of 307 ± 2 Ma and 309 ± 2 Ma, respectively. The quarry is dominated by the porphyritic (“central”) and equigranular (“ridge”) varieties of the Karkonosze granite. Ore mineralisation hosted in aplogranite includes an assemblage of sulphides, sulphosalts, oxides and various rare phases. The molybdenite ages obtained are consistent with a previously published isotopic age of leucogranite (aplogranite?) from the same quarry and are only slightly older than a recently published, refined 2 6Pb/238U age of untreated zircons from the Szklarska Poręba Huta porphyritic granite. The age of the molybdenite corresponds moderately well to the younger stage of post-magmatic, pneumatolitic/hydrothermal activity of the Karkonosze granite (about 312 Ma).
    Źródło:
    Geological Quarterly; 2012, 56, 3; 505--512
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Groundwater Quality Assessment of Hassi Messaoud Region (Algerian Sahara)
    Autorzy:
    Touahri, Mahmoud
    Belksier, Mohamed Salah
    Bouselsal, Bouualem
    Kebili, Mokhtar
    Powiązania:
    https://bibliotekanauki.pl/articles/2202243.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    Hassi Messaoud
    CTM
    CTS
    CI
    potability
    irrigation
    mineralisation
    Opis:
    In the Hassi Messaoud region, is groundwater the only source of water to meet daily demands, especially for consumption, domestic needs, industry and irrigation. This study focused on the evaluation of groundwater quality for potability and irrigation supply and the understanding of mineralization processes in the Mio-Pliocene (CTM), Senonian (CTS) and continental intercalary (CI) aquifers. For this study, 38 boreholes were sampled and analyzed for different parameters: pH, EC, TDS and major ions. The assessment of the relevance of groundwater in the study area was tested by the application of the water quality index (WQI) method. The suitability of the water for agricultural use was tested using the parameters of; EC, SAR, Na%, KR, PI and MH. The results illustrate that the groundwater in the study area is grouped into three classes: poor, very poor and unsuitable. Regarding groundwater use in irrigation, the results indicate that the waters of Hassi Messaoud are unsuitable for irrigation according on the EC and Wilcox diagram. The groundwater of the investigated area presents two types of water; Ca-Mg-HCO3 and Ca-Mg-HCO3. The study of the mineralization process of water using the Gibbs diagram and binary diagrams and the indices of saturation showed that the mineralization of water is controlled by the dissolution of evaporites and carbonates, silicate weathering and cation exchange. The participation of anthropic contributions is also noted in the Mio-Pliocene aquifer.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 11; 165--178
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The auriferous ore mineralisation and its zonal distribution around the Variscan Kłodzko–Złoty Stok granitoid pluton in the Sudetes (SW Poland) – an overview
    Autorzy:
    Mikulski, S. Z.
    Speczik, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059951.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    gold
    ore mineralisation
    skarn
    Variscan granitoids
    Kłodzko–Złoty Stok pluton
    Sudetes
    Opis:
    Due to a low level of erosion the Variscan (Carboniferous–Mississippian) Kłodzko–Złoty Stok (KZS) granitoid pluton and its metamorphic rock cover are unique examples of the ore mineralisation distribution pattern around a pluton. The KZS pluton formed from I-type magmas. It is composed mostly of high-K, metaluminous, biotite- and hornblende-rich granitoids of various compositions ranging from granodiorite to monzonite. The ore mineralisation in the KZS shows specific zonation that reflects interaction between post-magmatic mineralising fluids and country rocks of different composition. In the KZS pluton and its surroundings the mineralisation reveals high-temperature Ti-W oxides and As-Fe sulphide-arsenides plus Fe-oxides which are replaced outwards by Cu-Fe-Pb-Zn sulphides and subsequently, in the marginal parts of the pluton, by the Pb-Sb-Fe sulphide mineralisation. The specific elements and the isotopic composition of sulphur in ore minerals indicate that the metal-bearing postmagmatic-metamorphic hydrothermal fluids, despite their strong affinities to the KZS hybrid magmatic fluids, show also an influence of variable composition of country rocks. Variable alteration processes: hornfelsitisation, skarnisation, dolomitisation, serpentinitisation, pyroxenisation, biotitisation, K-feldspatisation, silicification, berezitisation, carbonatisation, prehinitisation, chloritisation, epidotisation, sericitisation, albitisation and sulphidisation developed along contacts of various rock types within the country rocks. In more fractured zones, transported elements were preferentially trapped by calcareous (Ca-rich) metamorphic rocks. Moreover, along the direct contact between granitoids and calcareous rocks a high temperature auriferous skarns with magnetite-pyrrhotite or/and löllingite-arsenopyrite mineralisation were formed. There are positive correlations between organic matter and Fe2O3 and MgO contents in skarns, suggesting remobilization of organic matter by hydrothermal fluids released during serpentinisation. The organic matter and carbonate samples have very variable δ13C and δ18O values. Most probably these are the result of isotopic re-equilibration between minerals under high temperatures. On the intimate contact of granitoids with less permeable amphibolitic hornfelses a high temperature titanite-scheelite mineralisation of veinlet-impregnation type occurred, while thermal and metasomatic alteration of the enveloping more permeable sandstones developed away from direct contact with granites, causing the formation of pyrite-rich beresites. As a rule, different types of sulphide ore mineralisation contain refractory gold captured by arsenopyrite, löllingite and/or pyrite. Moreover, the formation of contact-metasomatic ore mineralisation was accompanied by ore precipitation in veins and stockworks at a wide temperature range from 480 to 150°C during early and late fracturing stages. The younger stages also revealed variable concentration of gold. All those observations strongly indicate that the whole KZS pluton and its aureole was fertile in gold.
    Źródło:
    Geological Quarterly; 2016, 60, 3; 650--674
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neoproterozoic flood basalts of the upper beds of the Volhynian Series (East European Craton)
    Autorzy:
    Białowolska, A.
    Bakun-Czubarow, N.
    Fedoryshyn, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059908.pdf
    Data publikacji:
    2002
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Volhynian Series
    Ratno Beds
    flood basalts
    fractional crystallisation
    liquation
    palagonite
    copper mineralisation
    Opis:
    The effusive rocks of the Ratno Beds of the Volhynian Series known from the western slope of the Ukrainian Shield are represented by lower Vendian flood basalts whose normative composition is that of quartz tholeiites. These are plagioclase-pyroxene basalts displaying intergranular, intersertal, doleritic, ophitic and amygdaloidal textures; they range from aphanitic to medium-grained and contain about 7 vol. % of palagonite - an altered glass with a high iron and considerable magnesium content. The range in composition of plagioclases (andesine-bytownite) and clinopyroxenes (augite-ferropigeonite) suggests that the Ratno Beds basalts formed by fractional crystallisation of a parent magma. Residual magma underwent liquation, producing a separate acid glass (69-73 wt. % of SiO2) phase within a basic one considerably poorer in SiO2 but rich in iron and magnesium. The Ratno Beds basalts are relatively rich in silica, iron, titanium and vanadium as well as in REE and LREE in particular but poor in Ni, Co and Cr. Normative composition, geochemical characteristics and tectonic position suggest classification as continental quartz tholeiites. Hydrothermal solutions are responsible for rich native copper mineralisation in basalts of certain parts of Volhynia (Ivance and Policy). The Vendian volcanism of the Volhynian Series lithologically correlated with the Sławatycze Series of eastern Poland, can be related to continental rifting accompanying the breakup of Rodinia, with crustal fractures mainly running concordantly with the suture zone between Fennoscandia and Sarmatia, thus almost perpendicular to the Tornquist rift; other fracture trends may also have controlled Vendian volcanism.
    Źródło:
    Geological Quarterly; 2002, 46, 1; 37-58
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Organic and inorganic geochemical study of the Lower Permian Walchia shale of the Intrasudetic Basin (SW Poland)
    Autorzy:
    Bilkiewicz, E.
    Pieczonka, J.
    Piestrzyński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060412.pdf
    Data publikacji:
    2018
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Intrasudetic Basin
    Walchia shale
    organic matter
    uranium
    base metal mineralisation
    Opis:
    The Lower Permian Walchia shale of the Intrasudetic Basin is lacustrine sediment enriched in organic matter and base metals. Rock-Eval geochemical analysis was conducted on 110 drill-core rock samples of the Walchia shale in order to characterize the quantity, genetic type and maturity of dispersed organic matter. Concentrations of U, Th, Cu, Ni, V, Pb, Zn, Co, Mo, Cr, P, S and Fe were determined and microscopic studies to recognize mineral composition were performed on selected samples. Organic matter of the Walchia shale is immature and dominated by terrestrial type III kerogen with an admixture of planktonic type II kerogen. The Walchia shale is generally poor source rock, but some parts of the profile exhibit good and even excellent hydrocarbon potential. The average concentrations of analysed metals are higher than the average reported for black shales. The concentrations of base metals do not correlate with TOC contents, suggesting that their presence is associated with inorganic features of the Walchia shale or they could have been related primarily to organic matter which was subsequently oxidized and altered. Uranium may be partly associated with phosphates. Results of microscopic investigations revealed the lack of detectable radioactive minerals, abundance of framboidal pyrite, and prevalent galena, sphalerite and chalcopyrite.
    Źródło:
    Geological Quarterly; 2018, 62, 3; 631--643
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geochemistry and ore potential of the Almoughlagh batholith, western Iran
    Autorzy:
    Zamanian, Hassan
    Asadollahi, Behrooz
    Powiązania:
    https://bibliotekanauki.pl/articles/94586.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    Fe-skarn mineralisation
    Almoughlagh batholith
    metaluminous
    geochemistry
    skarn ore potential
    Baba Ali pluton
    geochemia
    Baba Ali
    Almoughlagh
    Opis:
    The Almoughlagh batholith intruded the dioritic Baba Ali pluton during the Oligo-Miocene; the pluton and is now exposed as a big enclave within the batholith. The pluton intruded the Songhor Series during the Late Kimmeridgian (~136 Ma) orogeny. The intrusion by the batholith transformed the diorite to metadiorite and the impure carbonate units of the Songhor Series. The batholith consists of rock types such as quartz syenite and syenogranite, which have a low average quartz content, and which are metaluminous to peraluminous and calc-alkaline in composition. Comparison of the compositions of the Almoughlagh batholith and the pluton with its Cu, Mo, Fe, Sn, W, Au, and Zn skarn deposits, indicates that the Baba Ali diorite geochemically shows much resemblance with those which could bring about Fe-Cu skarn mineralization, whereas the compositions of the Almoughlagh granitoids resembles those of the plutons associated with Mo and Zn skarn deposits. The associated hydrothermal activity related to the Almoughlagh batholith culminated in magnetite mineralisation in the Baba Ali and the Chenar mines in which copper mineralisation also is considerable.
    Źródło:
    Geologos; 2013, 19, 3; 229-242
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeozoic porphyry molybdenum-ungsten deposit in the Myszków area, Southern Poland
    Autorzy:
    Podemski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1187401.pdf
    Data publikacji:
    2001
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    porfirowe złoże molibdenowo-wolframowe
    paleozoiczne złoże typu miedziowo-porfirowego
    fluidy magmowe i pomagmowe
    strefowość mineralna
    strefowość geochemiczna
    analiza czynnikowa
    model mineralizacji
    geneza mineralizacji
    porphyry molybdenum-tungsten deposit
    Palaeozoic porphyry copper-type deposit
    magmatic and postmagmatic fluids
    minerał zoning
    geochemical zoning
    factor analyses
    mineralisation model
    genesis of mineralisation
    Opis:
    Porfirowe złoże molibdenowo-wolframowe w Myszkowie jest jednym z szeregu złóż miedziowo-porfirowych odkrytych w południowej Polsce, w słabo rozpoznanej strefie skał prekambryjsko-paleozoicznych obszaru Kraków-Lubliniec. Złoże myszkowskie występuje w kompleksie słabo zmetamorfizowanych skał proterozoiczno (wend)-dolnopaleozoicznych (dolny kambr), intrudowanych przez skały magmowe, głównie granodiorytowe. Wiek skał magmowych oraz mineralizacji kruszcowej określony został na górny karbon. Warto podkreślić, iż w Europie nie są znane inne złoża miedziowo-porfirowe tego wieku. Zarówno skład chemiczny i mineralogiczny mineralizacji kruszcowej złoża w Myszkowie, jak i występujące w nim rodzaje użylenia, są charakterystyczne dla złóż miedziowo-porfirowych, związanych z wapniowo-alkalicznymi masywami magmowymi. Złoże myszkowskie zbudowane jest głównie z żył o charakterze sztokwerku. Rzadsze są minerały skarnowe. Wyróżniono w nim kilka stadiów mineralizacji kruszcowej. Pięć z nich związanych jest ściśle z powstaniem złoża porfirowego. Hipoteza wielostadialnej genezy mineralizacji myszkowskiej wsparta została wynikami analizy czynnikowej danych pochodzących z badań geochemicznych wybranych rdzeni wiertniczych. Złoże w Myszkowie jest wzbogacone w Cu i Mo, natomiast jest bardzo ubogie w Au. W porównaniu z innymi złożami miedziowo-porfirowymi, związanymi z masywami wapniowo-alkalicznymi, złoże w Myszkowie jest niezwykle wzbogacone w wolfram. Dlatego uznano, że reprezentuje ono unikatowy typ złoża porfirowego: molibdenowo-wolframowy. Ogólnie biorąc, skład mineralny oraz mineralizacja kruszcowa złoża myszkowskiego są charakterystyczne dla głębszych partii złóż miedziowo-porfirowych. Nie można więc wykluczyć, że górna część złoża myszkowskiego, być może najbogatsza w mineralizację kruszcową, została między górnym karbonem a triasem usunięta przez erozję. W obniżonych częściach obszaru Kraków-Lubliniec mogły jednak zachować się inne, pełniejsze złoża typu myszkowskiego, być może posiadające nawet wzbogaconą strefę wietrzeniową.
    Źródło:
    Polish Geological Institute Special Papers; 2001, 6; 1-88
    1507-9791
    Pojawia się w:
    Polish Geological Institute Special Papers
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evidence of oxidation of the Kupferschiefer in the Lubin-Sieroszowice deposit, Poland: implications for Cu-Ag and Au-Pt-Pd mineralisation
    Autorzy:
    Oszczepalski, S.
    Nowak, G. J.
    Bechtel, A.
    Zak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059920.pdf
    Data publikacji:
    2002
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Lubin-Sieroszowice
    Kupferschiefer
    Rote Fäule
    copper deposit
    oxidation
    organic matter
    stable isotopes
    Cu-Ag ores
    Au-Pt-Pd mineralisation
    Opis:
    In the western part of the Lubin-Sieroszowice mining district, processes of secondary oxidation of the Kupferschiefer sediments have led to the formation of the Rote Fäule hematitic footwall alteration and resulted in a unique Kupferschiefer profile clearly comprising reduced, transitional and oxidised rocks. Redox zones were identified by petrographic, geochemical and stable isotope studies of selected core and mine sections. The vertical petrographic and geochemical zonation of the Kupferschiefer sections implies that this variation is the result of an ascending flow of hydrothermal oxidising fluids through the basal part of the Zechstein sediments. The upward, cross-formational flow and water-rock interaction resulted in the oxidation of the initially reduced Kupferschiefer shales that led to the destruction and leaching of unstable components, leaving only refractory and immobile constituents behind within the Rote Fäule. The oxidised rocks are characterised by an abundance of ferric Fe oxides, the presence of gold in association with hematite, high concentrations of aromatic hydrocarbons and asphaltenes, the lowest delta13 C and delta18 O values in carbonates and the highest delta 34 S values in disseminated sulfides. The residual organic matter is significantly depleted in bitumen and hydrogen, and characterised by the absence of alginite and sporinite, low collinite and bituminite contents, and a high relative proportion of solid bitumen. A considerable loss of pyrite and base metals coincides with organic matter degradation. The association of Au-Pt-Pd mineralisation with the oxidised rocks, and Cu-Ag ores with the reduced sediments implies that the processes forming the Rote Fäule were paralleled by sulfide mineralisation. The Rote Fäule/ore system developed as post-sedimentary event caused by large-scale flow of metal-bearing fluids from the underlying Rotliegend aquifer.
    Źródło:
    Geological Quarterly; 2002, 46, 1; 1-24
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numbers and Activity of Selected Microbial Groups Involved in Carbon Transformations in Podzolic Soil Amended with Sewage Sludge
    Liczebność i aktywność wybranych grup mikroorganizmów, czynnych w przemianach węgla w glebie bielicowej wzbogaconej osadem
    Autorzy:
    Joniec, J.
    Furczak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/388751.pdf
    Data publikacji:
    2012
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    gleba
    osad sterylny i niesterylny
    bakterie
    grzyby
    oddychanie
    mineralizacja celulozy
    soil
    sterile and non-sterile sewage sludge
    bacteria
    fungi
    respiration
    cellulose mineralisation
    Opis:
    Laboratory experiments were conducted in two variants, on a podzolic soil amended with the following doses of municipal-industrial sewage sludge: 30 Mg ź ha–1 (1 %), 75 Mg ź ha–1 (2.5 %), 150 Mg ź ha–1 (5 %), 300 Mg ź ha–1 (10 %) and 600 Mg ź ha–1 (20 %). In one of the variants non-sterile sludge was applied, and in the other variant the sludge applied had been subjected to the process of sterilisation in order to determine the contribution of the sludge microorganisms in the transformation of organic matter. After 0.5, 1, 2, 3, 4 and 5 months from the application of the sludge, analyses were performed to determine the following parameters in the soils of the two variants: so-called total number of bacteria with low nutritional requirements, so-called total number of bacteria with high nutritional requirements, total number of filamentous fungi, number of cellulolytic fungi, respiratory activity, intensification of the process of cellulose mineralisation, and dehydrogenases activity. The analyses revealed that the non-sterile sewage sludge caused a stimulation of both the growth and the level of activity of the bacterial and fungal groups under study. That effect was usually the strongest at the beginning of the experiment and increased with increase in the dose of sludge applied. The non-sterile sludge had a stronger effect only on mineralisation of cellulose and on dehydrogenases activity, which may indicate participation of sludge microorganisms in those processes.
    Badania laboratoryjne przeprowadzono w dwóch wariantach na glebie bielicowej, do której dodano następujące dawki osadu oecieków komunalno-przemysłowych: 30 Mg ź ha–1 (1 %), 75 Mg ź ha–1 (2,5 %), 150 Mg ź ha–1 (5 %), 300 Mg ź ha–1 (10 %) i 600 Mg ź ha–1 (20 %). W jednym wariancie zastosowano osad niesterylny, a w drugim osad poddany procesowi sterylizacji, w celu poznania udziału mikroorganizmów osadowych w transformacji wymienionej materii organicznej Po upływie 0,5, 1, 2, 3, 4 i 5 miesięcy oznaczano w gleby obu wariantów: tzw. ogólną liczbę bakterii o małych wymaganiach pokarmowych, tzw. ogólną liczbę bakterii o dużych wymaganiach pokarmowych, tzw. ogólną liczbę grzybów nitkowatych, liczebnooeć grzybów celulolitycznych, aktywnooeć oddechową, nasilenie procesu mineralizacji celulozy i aktywnooeć dehydrogenaz. Przeprowadzone analizy wykazały, że niesterylny osad oeciekowy spowodował zarówno stymulację rozwoju, jak i aktywnooeci badanych grup bakterii i grzybów. Efekt ten na ogół najsilniej wystąpił na początku trwania dooewiadczenia i nasilał się wraz ze wzrostem dawki odpadu. Osad niesterylny wywarł silniejszy wpływ jedynie na mineralizację celulozy oraz aktywność dehydrogenazową, co może wskazywać na udział w nich drobnoustrojów osadowych.
    Źródło:
    Ecological Chemistry and Engineering. A; 2012, 19, 1-2; 7-24
    1898-6188
    2084-4530
    Pojawia się w:
    Ecological Chemistry and Engineering. A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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