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Tytuł:
The effect of waste sulfur obtained during biogas desulfurization on the availability of selected trace elements in soil
Autorzy:
Bobowiec, A.
Tabak, M.
Powiązania:
https://bibliotekanauki.pl/articles/184269.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
elemental sulfur
sulfur pulp
waste
trace elements
Opis:
Research concerning the effect of the application of waste sulfur pulp (doses: 10, 20, 30, 60 mg S • kg–1 d.m. of soil) on selected soil properties was carried out. The pulp contained sulfur in the elemental form. Before setting up the experiment, the soil had a slightly acid reaction (determination in 1 mol • dm–3 KCl) and was not contaminated with heavy metals. After conducting the incubation experiment, it was observed that the application of sulfur pulp led to a statistically significant (and proportional to the dose) increase in the content of available sulfur in soil. Application of waste caused a decrease in soil pH and an increase in the mobility and availability of Zn, Cd and Mn (extracted with 0.01 mol • dm–3 CaCl2). In relation to soil without waste, more Zn, Cd and Mn (by 4–51%, 9–24% and 0.1–31%, respectively) was determined. Liming reduced the acidifying effect of the introduced waste – after 150 days, only soil with the highest dose of sulfur pulp was characterized by a statistically significantly lower pH than the soil without the waste addition. An increase in the rate of sulfur oxidation was also observed – after 150 days of the experiment, more sulfate sulfur (by 14.4–34.5%) was determined, with respect to treatments of the unlimed series. A considerably lower content of Zn, Cd and Mn was determined in the limed soil than in the unlimed one. Regardless of waste dose and date of analysis, the soil contained a trace content of mobile forms of Cu, Cr, Ni and Pb.
Źródło:
Geology, Geophysics and Environment; 2018, 44, 4; 345-355
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Is aldehyde dehydrogenase inhibited by sulfur compounds? In vitro and in vivo studies
Autorzy:
Iciek, Małgorzata
Górny, Magdalena
Bilska-Wilkosz, Anna
Kowalczyk-Pachel, Danuta
Powiązania:
https://bibliotekanauki.pl/articles/1038534.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
aldehyde dehydrogenase
reactive sulfur species
sulfane sulfur
Opis:
Aldehyde dehydrogenase (ALDH) catalyzes the critical step of ethanol metabolism, i.e. transformation of toxic acetaldehyde to acetic acid. It is a redox sensitive protein with the key Cys in its active site. Recently, it has been documented that activity of some proteins can be modified by sulfur-containing molecules called reactive sulfur species leading to the formation of hydro- persulfides. The aim of the present study was to examine whether ALDH activity can be modified in this way. Studies were performed in vitro using yeast ALDH and various reactive sulfur species, including Na2S, GSSH, K2Sx, Na2S2O3, and garlic-derived allyl sulfides. The effect of garlic-derived trisulfide on ALDH activity was also studied in vivo in the rat liver. The obtained results clearly demonstrated that ALDH could be regulated by sulfur species which inhibited its enzymatic activity. The results also suggested that not H2S but polysulfides or hydropersulfides were the oxidizing species responsible for this modification. This process was easily reversible by reducing agents. After the treatment with polysulfides or hydropersulfides the level of protein-bound sulfur increased, while the activity of the enzyme dramatically decreased. Moreover, the study demonstrated that ALDH activity was inhibited in vivo in the rat liver after garlic-derived trisulfide administration. This is the first study reporting the regulation of ALDH activity by sulfane sulfur species and the results suggest that it leads to the inhibition of the enzyme.
Źródło:
Acta Biochimica Polonica; 2018, 65, 1; 125-132
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of soil factors on sulphur changes and availability for plants
Wpływ czynników glebowych na przemiany i dostępność siarki dla roślin
Autorzy:
Kozłowska-Strawska, J.
Badora, A.
Powiązania:
https://bibliotekanauki.pl/articles/388961.pdf
Data publikacji:
2014
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
sulfur forms
sulfur conversion in soil
sulfur migration
sulfur availability
formy siarki
przemiany siarki w glebie
migracja siarki
dostępność siarki
Opis:
The study presents the analysis of the effect of soil factors such as oxidation, reduction, immobilization, mineralization, leaching, ion competition, and water management on sulfur metabolism in soil and its availability to the crops. Sulfur is one of the nutrients that largely affects the quantity and quality of crop yields, and is also a component of many compounds, the lack of which causes some disturbances to the development of plants and diseases in humans and animals. Despite such a great importance, it was not subject to agricultural research until the early 80s, and was not taken into consideration when determining the fertilizing needs of plants. However, the situation has changed in recent years, when problems associated with sulfur deficiency in crop production began more and more to be emphasized. The absence of this component is to be expected especially at the lighter, usually acidic mineral soils, located away from industrial centers. Therefore, the transformation of sulfur in the soil and its availability to the crop becomes an important issue.
W pracy przeanalizowano wpływ czynników glebowych, takich jak utlenianie, redukcja, immobilizacja, mineralizacja, wymywanie, konkurencja jonowa oraz gospodarka wodna na przemiany siarki w glebie i jej dostępność dla roślin uprawnych. Siarka jest jednym ze składników pokarmowych, który w dużej mierze wpływa na wielkość i jakość plonów roślin uprawnych, jest również składnikiem wielu związków, których brak powoduje zakłócenia w rozwoju roślin oraz schorzenia u ludzi i zwierzą. Pomimo tak dużego znaczenia aż do początku lat 80. nie była ona przedmiotem badań rolniczych, a także nie brano jej pod uwagę przy ustalaniu potrzeb nawozowych roślin. Sytuacja jednak zmieniła się w ciągu ostatnich lat, kiedy to coraz częściej zaczęto podkreślać problemy związane z deficytem siarki w produkcji roślinnej. Braku tego składnika należy się spodziewać przede wszystkim na lżejszych, zwykle zakwaszonych glebach mineralnych, usytuowanych z daleka od ośrodków przemysłowych. Stąd ważnym zagadnieniem stają się przemiany siarki w glebie i jej dostępność dla roślin uprawnych.
Źródło:
Ecological Chemistry and Engineering. A; 2014, 21, 3; 303-312
1898-6188
2084-4530
Pojawia się w:
Ecological Chemistry and Engineering. A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the fertilizer application method on soil abundance in available sulfur
Wpływ metody aplikacji nawozu na zasobność przyswajalnych form siarki w glebie
Autorzy:
Tabak, M.
Filipek-Mazur, B.
Powiązania:
https://bibliotekanauki.pl/articles/93372.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
elemental sulfur
sulfate sulfur
available sulfur
available phosphorus
waste
siarka elementarna
siarka siarczanowa
siarka przyswajalna
fosfor przyswajalny
odpady
Opis:
Efficient increase in the content of available forms of elements in soil depends not only on their total content introduced to soil material, but also on the technology of its application. Technology consists of techniques and date of application as well as agronomic practices aimed at maintaining proper conditions for element transformations. The method of application of waste elemental sulfur and ground phosphate rock was assessed. Doses of 20 and 40 mg S as well as 40 and 80 mg P·kg-1 d.m. were added to medium soil; 30 and 60 mg S as well as 60 and 120 mg P·kg-1 d.m. were added to heavy soil. The soil samples were collected on the day of application of materials and after 15, 30, 60 and 90 days. The soil pH value decreased during the incubation. An increase in available sulfur content was observed in both soils after elemental sulfur application; the sulfur content in the medium soil depended on the dose of waste. The soils with the addition of a double dose of ground phosphate rock had the highest content of available phosphorus.
Efektywne zwiększanie zawartości przyswajalnych form pierwiastków w glebie jest związane nie tylko z sumaryczną ich ilością wprowadzaną do gleby, ale także z technologią aplikacji. Na technologię składają się techniki i termin aplikacji oraz zabiegi agrotechniczne mające na celu utrzymanie właściwych warunków przemian pierwiastków. Oceniono metodę aplikacji odpadowej siarki pierwiastkowej i mączki fosforytowej. Do gleby średniej wprowadzono 20 i 40 mg S oraz 40 i 80 mg P, a do gleby gleby ciężkiej 30 i 60 mg S oraz 60 i 120 mg P·kg-1 . Próbki gleb pobrano w dniu wprowadzenia materiałów oraz po 15, 30, 60 i 90 dniach. W trakcie inkubacji stwierdzono zmniejszenie wartości pH obu gleb. W obu glebach stwierdzono zwiększenie zawartości siarki przyswajalnej po aplikacji siarki pierwiastkowej; w glebie średniej zawartość siarki zależała od dawki odpadu. Najwięcej fosforu przyswajalnego zawierały gleby z dodatkiem podwójnej dawki mączki fosforytowej.
Źródło:
Agricultural Engineering; 2018, 22, 4; 81-88
2083-1587
Pojawia się w:
Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the transcriptome of Potentilla sericea under cadmium stress conditions
Autorzy:
Wu, J.
Fan, W.
Gao, P.
Yang, Q.
Zhang, J.
Wang, L.
Powiązania:
https://bibliotekanauki.pl/articles/2130579.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
glutathione metabolism
sulfur metabolism
Opis:
Cadmium (Cd) stress significantly affects plant growth and development. Potentilla sericea is typically grown in gardens or as ground cover. In this study, the Cd response of P. sericea was analyzed based on physiological examinations and transcriptome analyses that uncovered the gene expression changes in P. sericea roots induced by a 7-day treatment with 90 μmol/L Cd2+. A total of 53,225 unigenes were identified, including 11,684 differentially expressed genes (DEGs; 8,083 upregulated and 3,601 downregulated). Additionally, 44 gene ontology terms and 127 Kyoto Encyclopedia of Genes and Genomes pathways were significantly enriched among these DEGs. Genes related to glutathione metabolism, plant hormone signal transduction, peroxisome processes, sulfur metabolism, and flavonoid biosynthesis pathways were confirmed as relevant to the Cd response of P. sericea. The molecular biology-related data described here may be useful for the future breeding of transgenic P. sericea plants with increased resistance to heavy metal stresses.
Źródło:
Acta Societatis Botanicorum Poloniae; 2020, 89, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design Parameters for a Hydro desulfurization (HDS) Unit for Petroleum Naphtha at 3500 Barrels per Day
Autorzy:
Bose, Debajyoti
Powiązania:
https://bibliotekanauki.pl/articles/1194016.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
hydro desulfurization
naphtha
petroleum
sulfur
Opis:
The present work reviews the setting up of a hydrodesulphurization unit for petroleum naphtha. Estimating all the properties of the given petroleum fraction including its density, viscosity and other parameters. The process flow sheet which gives the idea of necessary equipment to be installed, then performing all material and energy balance calculations along with chemical and mechanical design for the entire setup taking into account every instrument considered. The purpose of this review paper takes involves an industrial process, a catalytic chemical process widely used to remove sulfur (S) from naphtha.
Źródło:
World Scientific News; 2015, 9; 88-100
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie wpływu zwiększonej zawartości wybranych związków siarki na odpowiedź detektora THT stosowanego w analizatorach ANAT-M
Influence of increased content of selected sulfur compounds on the response of the THT detector used in ANAT-M analyzers
Autorzy:
Huszał, Anna
Szewczyk, Albert
Powiązania:
https://bibliotekanauki.pl/articles/1833969.pdf
Data publikacji:
2020
Wydawca:
Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:
THT
związki siarki
sulfur compounds
Opis:
Proper and systematic control of the odorization process is a basic condition for ensuring public safety in the distribution and use of gaseous fuels and for the continuity of the process. Maintaining a constant level of gas odorization requires gas network operators to constantly monitor the odorizing process. The control is carried out, among others by measuring the concentration of odorant in the gas. This is an important and inseparable element of controlling the degree of odorization of gaseous fuels, aimed at controlling the operation of odorizing devices by verifying the dose of odorizing agent or controlling the composition of gaseous fuel at any point of the gas distribution network. The correctness of uninterrupted control of the degree of gas odorization depends on the availability and quality of measuring instruments. The only process chromatographic analyzer intended for continuous measurement of the odorant concentration in gaseous fuels used on a national scale is the ANAT-M analyzer. Since this device works under process conditions, not supervised by an analyst, it is extremely important to recognize the restrictions on the correctness of its indications resulting from the presence of certain compounds in the gas. The article presents the analysis of observations and results of analyzes regarding the impact of selected sulfur compounds and other components of high-methane natural gas on the response of the THT detector currently used in ANAT-M analyzers. The significance of this influence for the quality of obtained THT concentration measurement results was determined. Gases containing sulfur compounds that may be present in the network gas, such as hydrogen sulfide, methyl mercaptan, dimethyl sulfide, as well as network gas containing the addition of LNG and biogas gases were tested. The obtained test results were analyzed in terms of determining the magnitude of the impact of the tested parameters on the precision of measurements performed with the ANAT-M analyzer.
Źródło:
Nafta-Gaz; 2020, 76, 11; 837--844
0867-8871
Pojawia się w:
Nafta-Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sulfur in railway elements
Autorzy:
Mikłaszewicz, I.
Czarnecki, M.
Powiązania:
https://bibliotekanauki.pl/articles/215627.pdf
Data publikacji:
2018
Wydawca:
Instytut Kolejnictwa
Tematy:
sulfur
Baumann test
railway elements
Opis:
The article presents the influence of sulfur as a harmful chemical element in railway elements working under load. The Baumann test shows the segregation of sulfur in the cross-section of the wheelset axle pivot, rail, wheel tyre and coupling elements. The tests were carried out in accordance with the standards PN-87/H-05414, ISO 4968:1979, PN EN 13674-1 + A1:2017, PN EN 13261: 2011, PN-84/H-84027/06, PN-EN 10083-3: 2006 and PN-EN 15566:2016-11, which require the determination of sulfur content and its distribution in those elements.
Źródło:
Problemy Kolejnictwa; 2018, 180; 101-104
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of sulfur and iron fertilization on nutrient utilization by plants
Autorzy:
Tabak, Monika
Filipek-Mazur, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/101372.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
mineral fertilizer
sulfur
sulfates
nitrogen
iron
Opis:
The aim of the three-year pot experiment was to determine the effect of standard mineral fertilization enriched with sulfur and iron on the content of nitrogen and sulfur in plants and on nutrient utilization by plants. Abundance of sulfates in soil after sulfur fertilization was also assessed. The direct effect of fertilization was assessed during the first and second year of the pot experiment, and the after-effect was analyzed during the third year. Rape (first year) and maize (second and third year) were the test plants. Solid mineral fertilizers (A: a mixture of ammonium nitrate and dolomite; B: a mixture of ammonium nitrate and sulfate) enriched with iron sulfate were used. Nitrogen content in the plants varied depending on applied fertilization as well on plant species and part. Sulfur application increased sulfur content in the aboveground parts of plants by 25-457% and in roots by 95-708%. Iron application ambiguously influenced nitrogen and sulfur content in the plants. Hovewer, simultaneous application of iron and sulfur (as fertilizer B enriched with iron) resulted in the highest coefficient of nitrogen (84%) and sulfur (39%) utilization. Sulfur fertilization caused a 5-20 fold increase in sulfate sulfur content in the soil.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2019, II/1; 53-65
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plasma levels of total, free and protein bound thiols as well as sulfane sulfur in different age groups of rats
Autorzy:
Iciek, Małgorzata
Chwatko, Grażyna
Lorenc-Koci, Elżbieta
Bald, Edward
Włodek, Lidia
Powiązania:
https://bibliotekanauki.pl/articles/1041562.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
sulfane sulfur
disulfides
age
thiols
plasma
Opis:
The redox status of plasma thiols can be a diagnostic indicator of different pathological states. The aim of this study was to identify the age dependent changes in the plasma levels of total, free and protein bound glutathione, cysteine and homocysteine. The determination was conducted in plasma of three groups of rats: 1) young (3-month-old), 2) middle aged (19-month-old), and 3) old (31-month-old). Total levels of glutathione, cysteine and homocysteine and their respective free and protein-bound fractions decreased with age. The only exception was a rise in free homocysteine concentration in the middle group, which indicates a different pattern of transformations of this thiol in plasma. The drop in the level of protein-bound thiols suggests that the antioxidant capacity of plasma diminishes with age, which, consequently, leads to impaired protection of -SH groups through irreversible oxidation. The plasma sulfane sulfur level also declines with age, which means that aging is accompanied by inhibition of anaerobic sulfur metabolism.
Źródło:
Acta Biochimica Polonica; 2004, 51, 3; 815-824
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modification of non-protein thiols contents in transgenic tobacco plants producing bacterial enzymes of cysteine biosynthesis pathway.
Autorzy:
Liszewska, Frantz
Błaszczyk, Anna
Sirko, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1044094.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
transgenic tobacco
cysteine biosynthesis
thiols
sulfur metabolism
Opis:
Conditions of achieving the maximal accumulation of sulfhydryl metabolites in the leaves of tobacco were explored. Simultaneous production of bacterial O-acetylserine (thiol)-lyase and serine acetyltransferase resulted in the increased thiols contents as compared to single transformants and controls. However, leaf discs feeding experiments differently affected thiols concentration in different plant groups and suggested that the most promising strategy to obtain plants with a high level of non-protein thiol-containing compounds might be sulfate feeding to plants overproducing serine acetyltransferase.Formation of cysteine from sulfide and O-acetyl-L-serine (OAS) is catalyzed by O-acetylserine (thiol)-lyase (OAS-TL) (EC 4.2.99.8) while OAS is synthesized by serine acetyltransferase (SAT) from acetyl-coenzyme A and serine. Molecular interactions between SAT and OAS-TL are involved in the regulation of the enzymatic activities of these proteins in bacteria (Mino et al., 2000) and in plants (Bogdanova & Hell, 1997; Droux et al., 1998). Experiments with Escherichia coli enzymes clearly indicated that OAS-TL activity was reduced to 30% in a complex (Mino et al., 2000). Similarly, a very dramatic decrease of the catalytic activity of OAS-TL bound in a complex has been reported for the plant enzymes (Droux et al., 1998). On the other hand, the bienzyme complex formation stabilizes bacterial SAT (Mino et al., 2000) and increases the apparent affinity for the substrates of plant SAT (Droux et al., 1998). The stability of the complex is negatively affected by OAS and positively by sulfide (Droux et al., 1998). Bacterial SAT is feedback regulated by cysteine, however, no relationship seems to exist between the complex formation and SAT sensitivity to this inhibition (Mino et al., 2000).Both enzymes, SAT and OAS-TL, are located in three compartments of the plant cell: the cytosol, chloroplasts and mitochondria. Different isoforms of these enzymes are in a different way regulated by sulfur nutrition (Nakamura et al., 1999; Takahashi et al., 1997; Warrilow & Hawkesford, 1998). The feedback regulation by L-cysteine of various isoforms of plant SAT has recently been studied (Inoue et al., 1999; Noji et al., 1998). According to the model proposed, the only role of the chloroplastic and mitochondrial isoforms (that are insensitive to the feedback inhibition) would be the production of OAS for cysteine biosynthesis. The cysteine-sensitive cystosolic isoform of SAT would, according to this model, have two roles: (i) OAS production for cysteine biosynthesis in the cystosol and (ii) control of OAS pool for regulatory purposes. The second postulated function is tightly connected with the fact that OAS acts as a positive regulator of genes whose expression is affected by sulfur status (Saito, 2000).Glutathione, the main low-molecular-mass thiol-containing compound in the plant cell, has multiple functions, including involvement in responses to various environmental stresses and maintenance of the redox homeostasis (Foyer & Rennenberg, 2000). Under non-stressing conditions the majority of glutathione is maintained in the reduced form (GSH) and its concentration is determined mainly by the rate of biosynthesis. GSH is produced from cysteine, glutamate and glycine in two steps catalyzed by γ-glutamylcysteinyl synthetase (γ-ECS) and glutathione synthetase (GS), respectively (Noctor et al., 1998). The biosynthesis and accumulation of GSH has been shown to depend on (i) the activity of γ-ECS, (ii) the availability of cysteine, and (iii) the light-dependent formation of glycine through the photorespiratory pathway (Foyer & Rennenberg, 2000).The main aim of this study was to identify the optimal conditions for the maximal accumulation of non-protein sulfhydryl metabolites in plant leaves. The transgenic tobacco plants with cytosolic production of bacterial enzymes of the cysteine biosynthesis pathway, SAT and OAS-TL, were obtained and analyzed for the transgenes expression. Additionally, leaf discs of either single or double transformants, as well as of control plants, were assayed for the thiol contents upon incubation in solutions of various compounds expected to have an influence on sulfur metabolism.
Źródło:
Acta Biochimica Polonica; 2001, 48, 3; 647-656
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Li-S battery recycling
Autorzy:
Siczek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/409532.pdf
Data publikacji:
2019
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
lithium-sulfur battery
recycling
anode
cathode
electrolyte
Opis:
Lithium-ion batteries are not situable for electric vehicles with high millage, military power supplies and fixed power networks. Therefore, the Li-S batteries have been intensively investigated, due to the high capacity, low cost, widespread source, and nontoxicity. The development of Li-S batteries causes increasing need to find the methods for their recycling. Some of them are discussed in the paper. The recycling of Li-S cell relates to its anode, cathode, electrolyte, binder and separator. The Li-S battery should be fully charged before recycling. There are potential methods for recycling of lithium from anodes, especially by re-melting. It is also possible to recycle some materials from the cathodes, especially sulfur by re-melting and graphite by dry crushing, Eco-bat Technologies method or the method investigated by Xiang et al. There is no effective recycling methods for electrolytes, binders and separators. It is necessary to carry out further studies on them.
Źródło:
Research in Logistics & Production; 2019, 9, 2; 125-135
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technologia wydobycia siarki metodą otworową na złożu „Basznia -1”
Sulphur mining using frash method by the example of „Basznia –1” deposit
Autorzy:
Bokwa, P.
Kasztelewicz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/169974.pdf
Data publikacji:
2018
Wydawca:
Poltegor-Instytut Instytut Górnictwa Odkrywkowego
Tematy:
górnictwo
siarka
technologia otworowa wydobycia
mining
sulfur
Opis:
Artykuł omawia historię rozwoju wydobycia siarki w Polsce, a w tym położenie złóż, parametry siarki, dotychczasowe wydobycie i kreśli perspektywę rozwoju tej branży w Polsce. Zasadniczą częścią jest technologia wydobycia siarki metodą otworową a w tym system i przebieg eksploatacji otworowej, sposoby odziaływania na warunki hydronaporowe horyzontu wód złożowych, zapobieganie przedostawaniu się wód złożowych do chronionych horyzontów wodonośnych oraz wytyczne technologiczne.
The history of sulfur mining in Poland was discussed in this paper. Deposits location, sulfur properties, as well as, current and perspective mining activity was described. The core part of this research is description of Sulphur mining using Frash method. In presented description the general information about mining operation, the hydrogeology, preventing actions in subject of reservoir waters penetration into the protected aquifers, as well as technological guidelines were provided.
Źródło:
Górnictwo Odkrywkowe; 2018, 59, 6; 51-60
0043-2075
Pojawia się w:
Górnictwo Odkrywkowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of sulfur and phosphorous from iron ore concentrate by leaching
Autorzy:
Rezvani Pour, H.
Mostafavi, A.
Shams Pur, T.
Ebadi Pour, G.
Haji Zadeh Omran, A.
Powiązania:
https://bibliotekanauki.pl/articles/110072.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
sulfur removal
chemical leaching
iron ore concentrate
Opis:
Iron ore having high-sulfur content causes problems in the concentrate production, pelletizing, and steel-making processes and environmental issues such as sulfur dioxide emission during the concentrate pelletizing process, and effect on steel quality. The current study was focused on the removal of sulfur from iron ore concentrate using chemical leaching technique. Magnetite iron ore concentrate was chosen for this purpose. The results obtained from the study showed that more than 90% of the total sulfur content was removed from the iron ore concentrate by the chemical leaching. Effects of several parameters, including temperature, stirring speed, particle size, and use of organic solvent on the sulfur removal was investigated by a series of experimental conditions. After optimizing the experimental conditions, it was demonstrated that in addition to sulfur, more than 80% of phosphorus, another important impurity, was also removed from the iron ore concentrate. In addition, one of the major advantages of our proposed method was the transformation of mineral pyrites to useful byproducts such as elemental sulfur.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 2; 845-854
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dissolution of alkaline batteries in reductive acidic media
Autorzy:
Zeytuncu, B.
Powiązania:
https://bibliotekanauki.pl/articles/110179.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
alkaline battery
manganese
zinc
reductive leaching
sulfur
Opis:
In this paper, recovery of manganese and zinc from alkaline battery paste by leaching under atmospheric condition using elemental sulfur as a reductive agent and sulfuric acid was investigated. Different dissolution parameters, acid concentrations, liquid-to-solid ratios, reaction temperatures, leaching times and amounts of elemental sulfur were studied in detail. According to results, the Mn dissolution in reductive acidic media was an intermediate-controlled process with activation energy of 10.21±2.60 kJ/mol. After the leaching step, Mn and Zn were selectively precipitated from the leaching solution using sodium hydroxide. After solid/liquid separation, manganese(II,III) oxide (Mn3O4) was obtained by drying at 105 °C in air. Next, Mn3O4 was converted to manganese(IV) oxide (MnO2) by heating at 800 °C in air. After that the solution containing Zn(OH)42- was treated with sulfuric acid to form zinc hydroxide, separated and next converted to zinc oxide by heating at 600 °C in air. The final products were characterized by XRD. The results showed that the proposed process can be effectively used for recovery of Mn and Zn from alkaline batteries.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 1; 437-450
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 144

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