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Tytuł:
Możliwości zastosowania grzybów w technologiach oczyszczania i remediacji wybranych elementów środowiska
Possible applications of fungi in purification and environmental remediation technologies
Autorzy:
Kołwzan, B.
Adamiak, W.
Dziubek, A. M.
Powiązania:
https://bibliotekanauki.pl/articles/236820.pdf
Data publikacji:
2018
Wydawca:
Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:
environment purification
wastewater
soil
gases
toxic pollution
biodegradation
bioremediation
mycoremediation
biofiltration
decolorization
white rot fungi
ligninolytic
biofilm
xenobiotics
bioaccumulation
biosorption
oczyszczanie środowiska
ścieki
gleba
gazy
zanieczyszczenia toksyczne
biodegradacja
bioremediacja
mykoremediacja
biofiltracja
odbarwianie
grzyby białej zgnilizny
biofilm
ksenobiotyki
bioakumulacja
biosorpcja
Opis:
Grzyby wykazują wiele cech przydatnych w inżynierii środowiska, dających im przewagę nad bakteriami. Udowodniono, że potrafią one rozkładać wiele skomplikowanych związków organicznych, także ksenobiotyków, takich jak trudnobiodegradowalne wielopierścieniowe związki aromatyczne, polichlorowane węglowodory, dioksyny, pestycydy oraz pozostałości materiałów wybuchowych. Ważną rolę w naturalnej regulacji liczebności populacji roślin odgrywają pasożytnicze gatunki grzybów, a gatunki symbiotyczne są niezbędne do prawidłowego rozwoju i wzrostu wielu gatunków roślin. Ich różnorodność taksonomiczna, genetyczna i funkcjonalna jest ogromna i stanowi obszerne źródło organizmów użytecznych w procesie bioremediacji. W dokonanym przeglądzie piśmiennictwa wykazano, że różne gatunki grzybów mogą znaleźć zastosowanie w remediacji środowiska gruntowo-wodnego oraz w oczyszczaniu ścieków i gazów odlotowych. Jednakże dotychczasowe badania nad wykorzystaniem grzybów najczęściej były prowadzone w skali laboratoryjnej. Eksperymenty w skali półtechnicznej i polowej wykazały, że na obecnym etapie praktyczne wykorzystanie grzybów w systemach inżynierii środowiska nie jest ekonomicznie uzasadnione. Problemem, który wymaga rozwiązania jest utrzymanie dominacji szczepów grzybów o wysokiej aktywności degradacyjnej w otwartych układach oczyszczających w warunkach konkurencji ze strony mikroorganizmów autochtonicznych. Duże nadzieje wiąże się z jednoczesnym wykorzystaniem w układach oczyszczania środowiska grzybów i bakterii, których skuteczność biodegradacyjna może się wzajemnie uzupełniać. Aby w pełni wykorzystać specyficzne walory grzybów niezbędne są badania przesiewowe w celu izolacji szczepów o szerszych zdolnościach metabolicznych, a także udoskonalanie szczepów metodami in vitro. Podobnie przyszłościowe jest wykorzystanie w bioremediacji immobilizowanych enzymów grzybowych. Rozwój technik molekularnych pozwoli na zmniejszenie nadal jeszcze wysokich kosztów wytwarzania, oczyszczenia i immobilizacji enzymów na odpowiednich nośnikach.
Fungi possess many features useful to environmental engineering, which gives them an advantage over bacteria. Their ability to decompose many complex organic compounds, including xenobiotics, such as difficult to biodegrade polycyclic aromatic compounds, polychlorinated hydrocarbons, dioxins, pesticides and explosive residues has been documented. Parasitic fungi species play an important role as natural regulators of plant population size, while symbiotic species are essential to proper development and growth of many plant species. The enormous taxonomic, genetic and functional diversity of fungi constitutes a rich source of organisms useful in bioremediation process. The literature review demonstrated that various types of fungi could be employed in remediation of soil-water environment as well as in treatment of wastewater and waste gases. However, most often current studies on fungal applications are carried out on a laboratory scale. At the current stage, as demonstrated by semi-technical and field-scale experiments, practical use of fungi in environmental engineering systems is not economically justified. Maintenance of dominance of fungal strains with high degradation activity in open purification systems in competition with indigenous microorganisms remains an open problem. Great promises are held out for simultaneous use of fungal and bacterial environments in treatment systems, as their biodegradation effectiveness may complement each other. Improvement of strains by the in vitro methods and screening tests to isolate strains with broader metabolic abilities are necessary in order to take full advantage of the specific benefits of fungi. Similarly, use of immobilized fungal enzymes in bioremediation offers good prospects for the future. Development of molecular techniques will allow for reduction of persistently high costs of enzyme production, purification and immobilization on appropriate carriers.
Źródło:
Ochrona Środowiska; 2018, 40, 1; 3-20
1230-6169
Pojawia się w:
Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concentration of Toxic Metals in Agricultural Land and Wheat Culture (Triticum Aestivum L.)
Autorzy:
Dreshaj, Adem
Millaku, Bedri
Gashi, Arian
Elezaj, Elvis
Kuqi, Bekë
Powiązania:
https://bibliotekanauki.pl/articles/2027787.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
toxic metals
national road
wheat
vehicle pollution
Opis:
Concentrations of heavy metals in the soil such as: (Pb, Cd, Zn and Cr), play a role in contamination of agricultural crops such as wheat (Triticum aestivum L.). Roads in the Republic of Kosovo are congested with traffic; in addition, over 55% are more than 20 years old. The agricultural land near roads in Kosovo is cultivated with agricultural products, especially wheat. This study aimed to investigate the concentration of toxic metals in soil and wheat crops due to vehicle emissions. In this research are examined the physico-chemical factors that affect the mobility of metals in the soil of the research area as; pH, concentration of organic carbon and heavy metals such as: (Pb, Cd, Zn and Cr). Analytical research shows that the content of toxic metals decreases with increasing distance or along highways. The concentration tests of toxic metals near roads and lands planted with analyzed agricultural crop of corn showed that heavy metal deposits also depend on atmospheric conditions and emissions from vehicle traffic.
Źródło:
Journal of Ecological Engineering; 2022, 23, 2; 18-24
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Groundwater Contamination and Health Risk Evaluation of Naturally Occurring Potential Toxic Metals of Hatiya Island, Bangladesh
Autorzy:
Rahman, Mahfuzur
Khan, Md. Sadril Islam
Hossain, Mohammad Sabbir
Hossain, Md. Imam Shohel
Hasan, Mahmudul
Hamli, Hadi
Mustafa, M. Golam
Powiązania:
https://bibliotekanauki.pl/articles/2105279.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
drinking water
toxic elements
pollution indices
Hatiya Island
Opis:
Groundwater meets the majority portion of drinking water needs, particularly in the rural area of Bangladesh. Groundwater has been continuously contaminated by potentially harmful metals as a result of natural processes as well as some anthropogenic activities, creating a variety of health impacts. The current research aimed to evaluate the naturally occurring level of metal contamination and the human health risk associated with deep groundwater in the Hatiya Island. Because of the arsenic, iron, and salinity problem in shallow groundwater, the inhabitants of the Hatiya Island use deep groundwater. During the field investigation, no shallow tubewells were observed; therefore, only deep groundwater samples were collected. The total sample size collected throughout the Hatiya island was 17. Five metals (Zn, Fe, Mg, Mn, and Cu) were analyzed using an Atomic Absorption Spectrophotometer (AAS). The concentrations of studied potential risky metals were ranked as follows: Mg > Zn > Fe >Mn> Cu. The detected values of all metals except Fe were found within the drinking water limits of WHO (2017), BIS (2012), and BDWS (1997), where only 29.41% of the Fe sample exceeded the standard drinking limits. According to the metal evaluation index (MEI) and degree of contamination (Cd), the groundwater of the study area is free from contamination but the metal pollution index (MPI) and nemerow pollution index (NI) exhibited little pollution in the mid-western part of the study area. The hazard quotient (HQ) values revealed no oral and dermal health risk for individual metals (Cu, Zn, Fe, Mn). On the other hand, the hazard index (HI) values exhibited no risk for combined metals as none of the values exceeded the safety limit value of 1. According to the HQ and HI results, the deep groundwater on Hatiya Island is non-carcinogenic and risk-free for children and adults. However, children were more susceptible to oral health risks than adults. In contrast, adults were more vulnerable to dermal health risks than children.
Źródło:
Journal of Ecological Engineering; 2022, 23, 6; 223--236
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of aluminium and copper on the development of birch (Betula pendula Roth.) cultured in vitro and in vivo
Autorzy:
Bojarczuk, K
Szczygiel, K.
Powiązania:
https://bibliotekanauki.pl/articles/41028.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
environment pollution
industrial pollution
tree
birch
Betula pendula
plant development
soil pollution
toxic metal
aluminium
copper
in vivo culture
in vitro culture
Opis:
Adventitious bud cultures were established by using buds of a selected birch clone (Betula pendula Roth.) resistant to industrial pollution. The Murashige and Skoog medium (1/2 and 1/4 MS) was used for multiplication and rooting of shoots. Aluminium was added to the medium, in the form of aluminium sulphate (50–100 mg Al dm–3), and birch culture was continued in vitro for over 12 months. The shoots developed on media with aluminium (Al+) proved to be more tolerant to aluminium and copper (added to the medium as nitrates or sulphates, at a concentration of 0.05–2.0 mM) during multiplication and rooting than those developed on media without aluminium (Al–). Rooted birch microcuttings obtained from cultures on media with aluminium (Al+) grew better in the soil from an unpolluted area (Zwierzyniec, Z) and from an area polluted by a phosphate fertilise factory (Luboń, L) than those from media without aluminium (Al–).
Źródło:
Dendrobiology; 2004, 51; 3-8
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ parametrów regulacyjnych silnika z zapłonem samoczynnym na emisję substancji toksycznych do otoczenia oraz zużycie paliwa
The influence of diesel engine adjustment parameters on toxicity substances emission and fuel consumption
Autorzy:
Osipowicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/314162.pdf
Data publikacji:
2011
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
zanieczyszczenie środowiska
silnik z zapłonem samoczynnym
substancje toksyczne
environmental pollution
compression-ignition engine
toxic substances
Opis:
Celem artykułu było omówienie wpływu kąta wyprzedzenia wtrysku oraz ciśnienia wtrysku na emisję substancji toksycznych do atmosfery oraz jednostkowe zużycie paliwa. Badania eksperymentalne zostały przeprowadzone przy użyciu silnika ZS z bezpośrednim wtryskiem paliwa. Podczas badań silnik pracował według zewnętrznej charakterystyki prędkościowej. Przeprowadzone badania wykazały, że na emisję substancji toksycznych do atmosfery wpływ mają zarówno kąt wyprzedzenia wtrysku jak i ciśnienie wtrysku. Analiza przeprowadzonych badań wykazała, że istnieje możliwość ograniczenia związków toksycznych w gazach wylotowych oraz zmniejszenie jednostkowego zużycia paliwa poprzez zmianę parametrów regulacyjnych silnika ZS.
The aim of article was discussion how the fuel injection advance angle and fuel pressure injection having an influence on toxic substances emission and individual fuel consumption. The experimental researches have been carried out by using Diesel engine with direct fuel injection. The engine operated in the external speed regime. The researches revealed that the fuel injection advance angle and fuel pressure injection affected on toxic substances emission. The analysis of carried out researches demonstrated that there is a possibility to limitation toxic substances in fumes and reduce individual fuel consumption by changing regulation parameters of Diesel engine.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2011, 12, 5; 318-323
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollution due to Textile Industries along Dombivali Industrial Belt of Mumbai, India
Autorzy:
Singare, P. U.
Dhabarde, S. S.
Powiązania:
https://bibliotekanauki.pl/articles/411756.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
industrial effluents
industrial pollution
physicochemical properties
toxic heavy metals
textile industries
Dombivali industrial belt
Mumbai
Opis:
The paper deals with monitoring of pollution arising due to textile based industries located along the Dombivali industrial belt of Mumbai, India. The study was carried for the period of one year from June, 2012 to May, 2013 to study the level of toxic heavy metals and the physico-chemical properties of waste water effluents discharged from the above industries. The concentration level of majority of toxic heavy metals like Cu, Ni, Pb, and Zn were reported to be maximum of 45.58, 2.00, 2.06 and 9.20 ppm respectively in the month of April, while Cr and Fe concentration levels were found to be 2.50 and 55.30 ppm in the month of March. The effluent samples collected in the month of July was reported to show high BOD content of 564 ppm, while COD content was maximum of 2436 ppm in the month of October. The effluent samples collected in the month of January was having very low DO content of 3.21 ppm and high cyanide content of 0.09 ppm. The alkalinity, hardness and chloride content were maximum of 2158, 198 and 2765 ppm respectively in the effluent samples collected in the month of February. The effluents were having high total solid content of 8269 ppm during the month of April, while the salinity and phosphate contents were reported high of 5.64 and 125.70 ppm during the month of May. It was observed that the concentration level of majority of toxic heavy metals and the values of various physico-chemical parameters were above the tolerable limit set for inland surface water. The present experimental data on environmental risk assessment studies due to textile industries may be regarded as an aid towards a better understanding of the problem arising due to such industries. There is a need to convey the message that prevention of adverse health effects and promotion of health are profitable investments for employers and employees as a support to a sustainable development of economics.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 3; 24-31
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on Pollution due to discharge of effluent from Pharmaceutical Industries of Dombivali Industrial Belt of Mumbai, India
Autorzy:
Singare, P. U.
Dhabarde, S. S.
Powiązania:
https://bibliotekanauki.pl/articles/412599.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
industrial pollution
waste water effluent
physicochemical analysis
toxic heavy metals
pharmaceutical industries
Dombivali industrial belt
Mumbai
Opis:
The paper deals with monitoring of pollution arising due to pharmaceutical based industries located along the Dombivali industrial belt of Mumbai, India. The study was carried for the period of one year from June, 2012 to May, 2013 to study the level of toxic heavy metals and the physico-chemical properties of waste water effluents discharged from the above industries. The concentration level of majority of toxic heavy metals like Cu, Cr, Pb, Fe and Zn were found to be maximum of 14.06, 0.57, 0.42, 18.93 and 3.31 ppm respectively in the month of February, while Ni concentration was found to be maximum of 0.43 ppm in the month of June. The pH and BOD values were reported to be maximum of 12.54 and 546 ppm respectively in the month of October. The conductivity and total solid content was found to be maximum of 27400 μmhos/cm and 9401 ppm respectively in the month of June. The cyanide content was maximum of 0.13 ppm in the month of April. The alkalinity, hardness, salinity, chloride, phosphate and COD content was reported maximum of 852, 694, 10.36, 4821, 46.32 and 1271 ppm respectively in the month of February. The DO content was found to be minimum of 3.00 ppm in the month of February. It was observed that the level of many of these toxic heavy metals except Zn and various physico-chemical parameters were above the tolerable limit set for inland surface water. From the results of the present investigation it seems that the time has come to move towards ecosystem specific discharge standards to maintain the health and productivity of natural resources on which the majority of Indians are dependent.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 3; 16-23
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sources of anthropogenic contamination of soil in the Upper Silesian Agglomeration (southern Poland)
Autorzy:
Pasieczna, Anna
Konon, Agnieszka Anna
Nadłonek, Weronika
Powiązania:
https://bibliotekanauki.pl/articles/2060618.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
soil pollution
toxic elements
enrichment factor
EF
geo-accumulation index
Igeo
Upper Silesian
Agglomeration
Suthern Poland
Opis:
This assessment of the environmental degradation by toxic chemical elements within the Upper Silesian Industrial Agglomeration of Poland encompasses the impact of mining for base metals and coal and non-ferrous metalurgy, as well as the discharge of industrial and municipal sewage causing strong degradation of the natural environment in the area over the years. The content of the following elements: Ag, Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, Hg, Mg, Mn, Mo, Ni, P, Pb, S, Sn, Sr, Ti, V and Zn has been assessed both in the topsoil (0.0-0.3 m) and the subsoil (0.8-1.0 m) of the study area. Concentrations of the elements in the <2 mm soil fraction were analysed using the ICP-OES method after Aqua regia extraction. The soil contamination was assessed based on the enrichment factor (EF) and geo-accumulation index (Igeo). The tests revealed elevated contents of several metals, arsenic and sulphur, exceeding the regional geochemical background levels. Unusually high concentrations of the following elements: As (up to 5,300 mg/kg), Cd (up to 388.8 mg/kg), Cr (up to 1,638 mg/kg), Cu (up to 13,230 mg/kg), Hg (up to 23.44 mg/kg), Mo (up to 93.7 mg/kg), Pb (up to 54,940 mg/kg), Sn (up to 701 mg/kg) and Zn (up to 88,120 mg/kg) were recorded. The highest concentrations of these elements were found in the proximity of smelters and residential areas. The spatial distribution of metals is shown as interpolated data on maps and compared with the locations of mining and industrial sites.
Źródło:
Geological Quarterly; 2020, 64, 4; 988--1003
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis concerning possibilities of adjustability of cruise ferries and Ro-Ro vessels operating on the Baltic Sea to the requirements of Annex VI of the MARPOL convention
Autorzy:
Giernalczyk, M.
Wojciechowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/247480.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
cruise ferry
ro-ro vessel
toxic compounds
carbon dioxide
air pollution
environmental protection
fuel-water emulsion
Opis:
The goal of the paper is to focus on the problem of emission of harmful compounds e.g. NOx, SOx and CO2 from seagoing ships to environment. The VI Amendment to MARPOL Convention concerning prevention against air pollution by seagoing ships, brought into practice in May 19th 2005, forced ship owners to use means for reduction of environment harmful substances emission to atmosphere. They may comprise construction and operating methods. Energy Efficiency Design Index (EEDI) is one of the tools enabling implementation of the above-mentioned regulations, compulsory to all new design and build ships. However, for units already in operation, the problem requires a different approach. The article presents various methods of reduction of toxic substances and CO2 by seagoing vessels in order to adapt to the requirements of the Convention and other legal regulations in this regard. As an example, the analysis has been presented concerning possibilities of adjustability of cruise ferries and Ro-Ro vessels operating on the Baltic Sea to the requirements of Annex VI of the MARPOL Convention. Some possible solutions have been shown focusing on selection of system of combustion of hydro-fuel emulsion in main drive engine. Article contains description of introducing water to the combustion chamber methods and water influence on the combustion process.
Źródło:
Journal of KONES; 2016, 23, 3; 143-150
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The ecological risk of contamination with toxic metals in soils around the Trepça complex, the Kosovo thermal power plants, and a New Co Ferronickeli complex
Autorzy:
Zuzaku, Islam
Dhimitri, Jostina
Sadiku, Makfire
Halili, Jeton
Ismajli, Betim
Demaku, Skender
Powiązania:
https://bibliotekanauki.pl/articles/24201030.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
toxic metals
geoaccumulation index
Igeo
pollution factor
industrial revolution
metale toksyczne
wskaźnik geoakumulacji
współczynnik zanieczyszczeń
rewolucja przemysłowa
Opis:
Toxic waste, soil, and ash samples were collected in the landfill (solid environmental hot spots) near the Trepça complex, New Co Ferronickeli, and Kosovo thermal power plants. They were analyzed by the ICP-OES method to measure the concentration of some toxic metals. The pollutant with the highest mean concentration (in an acidic medium) was Fe (36 400.0), followed by Mn (8683.0), Cr (6575.0), As (4739.0), Pb (3364.0), Zn (2394.0), Ni (922.6), Cu (297.6), Co (46.6), and Cd (61.8) (all concentrations in mg/kg). Three pollution indices were used such as the geoaccumulation index (Igeo), contamination factor (CFi), and pollution load index (PLI). The CFi values determined for Fe, Mn, Cr, As, Pb, Zn, Ni, Cu, Co, and Cd indicated high contamination. In all soil samples, the PLI values showed the presence of soil pollution.
Źródło:
Environment Protection Engineering; 2023, 49, 2; 5--17
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Catalytic properties analysis of platinum catalytic converters in self ignition engine exhaust gases
Analiza właściwości katalitycznych reaktorów platynowych do silników o zapłonie samoczynnym
Autorzy:
Kruczyński, S. W.
Kamela, W.
Mleczko, P.
Powiązania:
https://bibliotekanauki.pl/articles/244197.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
silniki spalinowe
emisja substancji szkodliwych
reaktory katalityczne
zanieczyszczenie środowiska
combustion engines
toxic gases emission
catalytic reactors
air pollution
Opis:
In this article the catalytic properties comparison of four different platinum catalytic converters working in exhaust gases of self ignition engine were described. The test procedure and the test bench were described. Article contains structure of tested catalytic converters with physicochemical investigations of their active surface. The reactors surfaces views from scanning electron microscope (SEM) and x-ray surface structure investigations were also included. Comparison of tested catalytic converters properties were made in function of their temperature. Analyses were related to rector's ability to convert carbon monoxide, hydrocarbon, sum of nitric oxides, nitrogen monoxide and nitrogen dioxide. Results of investigations have shown that platinum catalytic converters working in diesel exhaust gases have high efficiency in oxidation of nitrogen monoxide to nitrogen dioxide. This property is mainly used in continuous regeneration trap systems (CRT). Catalytic converters ability to passive reduction of nitric oxides by use of hydrocarbons was demonstrated. Ranges of tested reactors temperature in which their properties that can be used in continuous regeneration trap systems and systems of selective nitric oxides reduction by use of hydrocarbons (HC-SCR) were defined. Mentioned reactors properties were estimated in connection to platinum load on reactors surface.
W artykule przedstawiono porównanie właściwości katalitycznych czterech reaktorów platynowych o różnym ładunku platyny pracujących w spalinach silnika o zapłonie samoczynnym. Artykuł zawiera opis stanowiska badawczego oraz procedurę badań. W pracy przedstawiona została budowa badanych modeli reaktorów katalitycznych i badania fizykochemiczne ich powierzchni aktywnych, w tym obrazy ze skaningowego mikroskopu elektronowego (SEM) oraz badania rentgenowskie struktury powierzchni. Porównania właściwości badanych reaktorów katalitycznych dokonano w funkcji temperatury ich pracy. Analiza dotyczyła zdolności reaktorów do konwersji tlenku węgla, węglowodorów, sumarycznego stężenia tlenków azotu, tlenku azotu oraz dwutlenku azotu. Wyniki badań wykazały, że reaktory platynowe pracujące w spalinach silnika o zapłonie samoczynnym wykazują dużą efektywność w utlenianiu tlenku azotu do dwutlenku azotu. Właściwość ta jest w szczególności wykorzystywana w systemach ciągłej regeneracji filtra cząstek stałych (CRT).Wykazano również zdolność tych rektorów do pasywnej redukcji tlenków azotu za pośrednictwem węglowodorów. Określono zakres temperatury pracy badanych reaktorów, przy których ujawniają się ich właściwości katalityczne możliwe do wykorzystania w systemach ciągłej regeneracji filtra cząstek stałych i systemach selektywnej redukcji tlenków azotu węglowodorami (HC-SCR). Oceniono wyżej wymienione właściwości reaktorów badawczych w zależności od ładunku platyny naniesionego na ich powierzchnię.
Źródło:
Journal of KONES; 2008, 15, 2; 247-256
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on possibility of using potato beetle [Leptinotarsa decemlineata Say] as a bioindicator of soil polluted by lead
Autorzy:
Przybylski, Z
Powiązania:
https://bibliotekanauki.pl/articles/65097.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
toxic element
mercury
polluted soil
plant protection
environment pollution
bioindicator
cadmium
Leptinotarsa decemlineata
Colorado potato beetle
agroecosystem
lead
Opis:
The bioindicative research conducted in 1998 concerned the soil polluted by lead in the region of Glass Factory in Krosno. Potato beetle larvae descending to soil for pupation were the soil bioindicator. Samples of soil were collected in the distance of 500 to 1,000 m from the factory emitters, and later the lead content was determined in the Chemical Agricultural Station in Rzeszów. The lead level in the 1st pollution zone was 200.0 mg Pb/kg while in the 2nd zone 70.0 mg/kg, and in the soil sample from the control field the level was 12.0 mg/kg. The obtained results of the analysis conducted in the laboratory of the Regional Experimental Station did not show any significant differences between both the beetle mass which emerged from the soil, and their number from the control field and the experimental one.
Badania bioindykacyjne gleby zanieczyszczonej ołowiem, do którego wykorzystano larwy stonki ziemniaczanej schodzące do gleby na przepoczwarczenie, wykonano w 1998 roku. Glebę zawierającą ołów pobrano w rejonie huty szkła koło Krosna w odległości do 500 m i od 500 do 1000 m od emitorów huty. Dla obiektu kontrolnego próby gleby pobrano w ogródku fenologicznym Wojewódzkiego Inspektoratu Ochrony Roślin w Rzeszowie. Analizy chemiczne gleby w zakresie zawartości ołowiu wykonała Okręgowa Stacja Chemiczno-Rolnicza w Rzeszowie. Próby gleby pobrane w odległości do 500 m od emitorów zawierały 200,0 mg Pb/kg, od 500 do 1000 m - 70,0 mg/kg, natomiast gleba dla obiektu kontrolnego - 12,0 mg/kg. Otrzymane wyniki badań bioindykacyjnych opracowanych statystycznie nie wykazały istotnych różnic między poszczególnymi obiektami zarówno w masie ciała chrząszczy, które wyszły z gleby po przepoczwarczeniu się larw, jak i ich liczby.
Źródło:
Journal of Plant Protection Research; 2002, 42, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy Metal Content in Water of Bhavans College Lake of Andheri, Mumbai
Autorzy:
Singare, P. U.
Talpade, M. S.
Dagli, D. V.
Bhawe, V. G.
Powiązania:
https://bibliotekanauki.pl/articles/412414.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Toxic Heavy Metals
lake water
AAS
Cold Vapour Technique
hydride generation
health hazards
water pollution
Bhavan's College
Andheri
Mumbai
Opis:
The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of the Bhavan's College campus of Andheri, Mumbai. The results of the present investigation indicates that yearly average concentration of toxic heavy metals like Pb, Zn, Cr, Fe and Hg was 0.16, 5.56, 2.09, 5.19 and 0.02 ppm respectively which were very much above their permissible limits set for inland surface water, while the yearly average concentration of Ni was found to be 2.76 ppm which was close to the maximum limit of 3.0 ppm. The results of the present investigation points out the need to implement common objectives, compatible policies and programs for improvement in treatment facilities for the treatment of discharged sewage and laboratory effluents.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 8, 2; 94-104
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survival of larvae of Nippostrongylus brasiliensis [Nematoda] in solutions of toxic substances
Autorzy:
Gadomska, K
Zakrzewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/839605.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
toxic substance
Nematoda
lead
cadmium solution
copper solution
Nippostrongylus brasiliensis
environment pollution
cadmium
zinc
copper
larva
zinc solution
lead solution
survival
Opis:
The aim of this study was to determine the action of zinc, cooper, lead and cadmium compounds upon N. brasiliensis invasive nematode larvae. The tested larvae were kept in ZnCl2, CuCl2 , Pb(NO3)2 and CdCl2 solutions. The concentrations of toxic substances applied for the study corresponded with level of environmental pollulion. All toxins reduced live - space of larvae. In control group they survived about 69 days. In solutions of the Zn, contaminated with 10, 50, 100 and 200 ppm of toxic substance, they survived 42, 16, 14 days and 72 hours. In solution of Cu, contaminated with 5, 10, 50 and 200 ppm of toxin, live - space was reduced to 51, 21, 7 days and 54 hours, respectively. Lead reduced live - space of larvae to 26 days already at the low concentration of 10 ppm and in all higher concentrations (20, 50 and 200 ppm) their survival changed unsignificantly (to 22 days). In solution of Cd, contaminated with 0.1 and 0.3 ppm larvae died after 39 and 17 days, respectively, white at higher concentrations of this toxin (3 and 10 ppm) larvae survived only 54 and 30 hours, respectively.
Źródło:
Annals of Parasitology; 1997, 43, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survival of larvae of Nippostrongylus brasiliensis [Nematoda] in solutions of toxic substances
PRZEŻYWALNOŚĆ LARW NIPPOSTRONGYLUS BRASILIENSIS (NEMATODA) W ROZTWORACH SUBSTANCJI TOKSYCZNYCH
Autorzy:
Gadomska, K.
Zakrzewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/2148897.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
toxic substance
Nematoda
lead
cadmium solution
copper solution
Nippostrongylus brasiliensis
environment pollution
cadmium
zinc
copper
larva
zinc solution
lead solution
survival
Opis:
The aim of this study was to determine the action of zinc, cooper, lead and cadmium compounds upon N. brasiliensis invasive nematode larvae. The tested larvae were kept in ZnCl2, CuCl2 , Pb(NO3)2 and CdCl2 solutions. The concentrations of toxic substances applied for the study corresponded with level of environmental pollulion. All toxins reduced live - space of larvae. In control group they survived about 69 days. In solutions of the Zn, contaminated with 10, 50, 100 and 200 ppm of toxic substance, they survived 42, 16, 14 days and 72 hours. In solution of Cu, contaminated with 5, 10, 50 and 200 ppm of toxin, live - space was reduced to 51, 21, 7 days and 54 hours, respectively. Lead reduced live - space of larvae to 26 days already at the low concentration of 10 ppm and in all higher concentrations (20, 50 and 200 ppm) their survival changed unsignificantly (to 22 days). In solution of Cd, contaminated with 0.1 and 0.3 ppm larvae died after 39 and 17 days, respectively, white at higher concentrations of this toxin (3 and 10 ppm) larvae survived only 54 and 30 hours, respectively.
Źródło:
Wiadomości Parazytologiczne; 1997, 43, 1; 79-88
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł

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