Temat: chemical waste - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Effect of Gas Industry Waste on Heavy Metals in Soil
Autorzy:: Kholikulov, Shodi
Yakubov, Tursunboy
Bobobekov, Isomiddin
Powiązania:: https://bibliotekanauki.pl/articles/1955543.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: waste
heavy metals
gas chemical complex
soil pollution
Opis:: The article describes the effect of wastes on the amount of heavy metals in light serozem soils. The study examined the total amount of elements nickel, lead, zinc and copper. The results show that among the heavy metals studied, the highest amount of copper is at a distance of 500 m (55 mg/kg) in the western direction of the Shurtan gas chemical complex, the maximum amount of total zinc is 98 mg/kg in the western direction at 1000 m and 1250 m in the northwest, at a distance of 1250 m, the maximum amount was 1250 m in the north-west direction (202 mg/kg of soil) and the maximum amount of the nickel was 257 mg/kg of soil at a distance of 1850 m in the north-west direction. These numbers are several times higher than the background index and allowable norms of the studied elements. The maximum amount of the element lead is 8-9 times its allowable level, and nickel is more than 3 times. Pollution was mainly recorded on the southern, southeastern, and southeastern sides of the complex.
Źródło:: Journal of Ecological Engineering; 2021, 22, 9; 255-262
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Comparison of the Effectiveness of Biological and Chemical Leaching of Copper, Nickel and Zinc from Circuit Boards
Autorzy:: Andrzejewska-Górecka, Dorota Anna
Poniatowska, Agnieszka
Macherzyński, Bartłomiej
Wojewódka, Dominik
Wszelaka-Rylik, Małgorzata Edyta
Powiązania:: https://bibliotekanauki.pl/articles/124999.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioleaching
chemical leaching
e-waste
PCBs
heavy metals
Opis:: The progress of civilization brings with it the development of advanced technologies and increased demand for electric and electronic equipment. That directly influences the increase of produced e-waste, called Waste of Electrical and Electronic Equipment (WEEE). Due to the fact that deficit and critical metals are running out throughout the World, and due to increased demand for those metals, their alternative source and recovery methods have to be found. As an alternative biotechnological methods can be used. The advantage of biological methods over chemical processes is its selectivity in regard to different metal groups, simplicity of technological process, economic effectivity (lower energy expenditure) and lack of negative impact on environment. The aim of this work was to compare the effectiveness of biological and chemical leaching of copper (Cu), nickel (Ni) and zinc (Zn) from circuit boards (PCBs).The experiment was conducted in variants which included factors such as temperature (24°C and 37°C) and speed of mixing. In case of all metals higher effectiveness was achieved in variants conducted in the temperature of 24°C and faster mixing than in temperature of 37°C and slower mixing. In case of cooper and zinc better results of metal removal were achieved in bioleaching variant. In case of nickel faster result of metal removal were achieved in chemical leaching, but at the end of the experiment the effectivity of chemical leaching and biological leaching was similar. The maximum efficiency of cooper, nickel and zinc release was adequately 100%, 90%, 65%.
Źródło:: Journal of Ecological Engineering; 2019, 20, 9; 62-69
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: An analysis of the chemistry, mineralogy and texture of waste dolomite powder used to identify its potential application in industry
Autorzy:: Gruszecka-Kosowska, A.
Wdowin, M.
Kosowski, T.
Klimek, A
Powiązania:: https://bibliotekanauki.pl/articles/184257.pdf
Data publikacji:: 2015
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: dolomite powder
heavy metals
waste utilization
mineralogical-chemical research
environmental protection
Opis:: In this work, characterization of dolomite powder was carried out in order to specify possible industrial applications. After the technological use of dolomite aggregates, the remaining fine powder becomes a waste. Raw and calcined powder samples were subject to mineralogical, textural and chemical studies involving leaching tests. The results of the calcination process indicate that the carbonate minerals present in the material sample undergo complete decomposition to form oxides. After the calcination, the material is practically non-porous, and its surface area is more than five times lower than that of the raw material. However, due to the high content of calcia in the calcined sample (CaO > 45% wt.), the material cannot be used as an additive in cement. The leaching tests showed that the concentration of metals released from the dolomite powder is low enough to classify the material as hazardous waste according to the TCLP test. Moreover, the concentration of metals that can get into the environment does not exceed permissible values as set by Polish law. Thus, it is recommended and justified to carry out detailed tests for the purpose of environmental protection; i.e. wet flue gas desulfurization, heavy metals absorption, and CO2 capture.
Źródło:: Geology, Geophysics and Environment; 2015, 41, 4; 343-352
2299-8004
2353-0790
Pojawia się w:: Geology, Geophysics and Environment
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analiza wielopierwiastkowa wybranych popiołów ze spalania płyt drewnopochodnych
Multielemental analysis of selected ashes from combustion of wood derived boards
Autorzy:: Kajda-Szcześniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/357564.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Śląska
Tematy:: popioły
skład chemiczny
metale ciężkie
zagospodarowanie
spalanie odpadów
ashes
chemical composition
heavy metals
waste management
waste combustion
Opis:: W artykule przedstawiono wyniki odnośnie składu pierwiastkowego oraz zawartości wybranych metali ciężkich w odpadach paleniskowych. Badaniom poddano trzy rodzaje popiołów powstałych w warunkach laboratoryjnych ze spalania odpadowej stolarki drzwiowej i podłogowej wykonanej na bazie płyt drewnopochodnych. Badania miały na celu wstępną ocenę stopnia szkodliwości wygenerowanych odpadów paleniskowych na środowisko przyrodnicze. Na podstawie uzyskanych rezultatów badań zaproponowano możliwości gospodarczego wykorzystania omawianych w publikacji popiołów.
The article presents test results concerning elemental composition and content of selected heavy metals in the combustion wastes. Three types of ashes were subject to tests. They were generated in a laboratory after combustion of wastes from flooring, doors and door frames made of wood derived boards. The purpose of tests was to assess initially to what degree the generated combustion wastes are detrimental to the natural environment. On the basis of the obtained results, some possibilities for the use of the discussed ashes were presented.
Źródło:: Archiwum Gospodarki Odpadami i Ochrony Środowiska; 2015, 17, 1; 105-110
1733-4381
Pojawia się w:: Archiwum Gospodarki Odpadami i Ochrony Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Charakterystyka popiołu z paleniska kominkowego
Characteristics of ashes from fireplace
Autorzy:: Kajda-Szcześniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/357504.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Śląska
Tematy:: popiół
właściwości odpadów
skład chemiczny
metale ciężkie
zagospodarowanie odpadów
ash
waste properties
chemical composition
heavy metals
waste management
Opis:: Problematyka artykułu związana jest z zagospodarowaniem odpadów paleniskowych w zależności od ich pochodzenia i właściwości. Badaniami objęto popiół powstający w palenisku kominkowym stosowanym w domach jednorodzinnych. Kominek opalano odpadami drzewnymi. W artykule zamieszczono wyniki badań własnych odnośnie właściwości fizycznych, składu chemicznego oraz zawartości metali ciężkich. Ponadto przedstawiono skład zanieczyszczeń w ekstrakcie wodnym oraz analizę cytotoksyczną przeprowadzoną na ekstrakcie wodnym i w popiele. W odpadzie stwierdzono wysoką zawartość cynku, manganu i ołowiu. Ponadto odnotowano dużą zawartość związków alkalicznych. Uzyskane rezultaty badań porównano z danymi literaturowymi i obowiązującymi aktami prawnymi.
Problems depicted by the article are related to the management of the fireplace ashes depending on their origin and properties. Tests covered ashes from fireplaces used in dwelling houses. In the fireplaces wood derived wastes were burned. The article presents test results of physical properties, chemical composition and content of heavy metals Moreover, it describes a composition of contaminations in water extract and cytotoxic analysis on water extract and in the ashes. In the wastes high content of zinc, manganese and lead was identified. Furthermore, high amount of alkaline compounds was noted. The achieved test results were compared to the data from publications and binding laws.
Źródło:: Archiwum Gospodarki Odpadami i Ochrony Środowiska; 2014, 16, 3; 73-78
1733-4381
Pojawia się w:: Archiwum Gospodarki Odpadami i Ochrony Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Ocena składu fizyczno-chemicznego osadów ściekowych pochodzących z komunalnej oczyszczalni ścieków
Evaluation of the Physico-chemical Composition of Sludge from Municipal Sewage Treatment Plant
Autorzy:: Milik, J.
Pasela, R.
Szymczak, M.
Chalamoński, M.
Powiązania:: https://bibliotekanauki.pl/articles/1818029.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: osady ściekowe
skład chemiczny
metale ciężkie
substancja organiczna
oczyszczanie ścieków komunalnych
sewage sludge
chemical
heavy metals
organic material
waste waters treatment
Opis:: Municipal sewage sludge are a by-product of waste water treatment. The problems of sludge associated with the development of sludge require urgent solutions. Municipal sewage sludge may be used in agriculture in two forms: processed and unprocessed if they are stabilized and comply with acceptable levels of heavy metals and sanitation indicators and include the relevant product quantities of organic compounds and fertilizing nitrogen, phosphorus and potassium. Composition and quantity of sludge produced in the wastewater treatment process is different and depends on several parameters such as quality of waste water and processes for their purification. The presents shows an assessment of the physical and chemical sludge from sewage treatment plants selected and the results of research and analysis for the sludge collected from said object. Analysis of the results was carried out for possibilities to use sewage sludge for agricultural purposes. Sewage sludge derived from a sewage treatment plant mechanical-biological stabilization of sludge anaerobic digestion with a capacity of 26,400 m3. per day. The sediment samples were collected in the period from January to September 2015 year with a two-month interval. Attempts were subjected to microwave mineralization in a closed system in aqua regia. The heavy metal concentrations determined with a spectrophotometer Coupled Plasma emission ICP-OES Perkin-Elmer Optima 8000 detecting elements P, Ca, Mg, Pb, Cd, Hg, Ni, Zn, Cu, Cr. The collected sediment were determined: pH, dry weight of sediment, organic matter (marked as loss on ignition at 550 ° C), total nitrogen (Kjeldahl) and ammonium nitrogen. The results were compared with the limit values according to the law. It has been shown that the predominant heavy metals present in the sludge was copper and zinc, mercury was not detected. The value of organic matter sludge tested ranged from 49.36 to 63.15% of dry matter. The content of heavy metals in sediments was measured by reference to the existing provisions governing the use of natural sewage sludge. The contents of heavy metals were low and did not exceed the limit values in sewage sludge for their use in agriculture and land reclamation. The studied sediments were stable nature. The results indicate the good properties of the sludge, which can be used as organic fertilizer. It has been shown that the sludge produced in the study treatment did not exceed in any case permissible concentrations of heavy metals specified for sewage sludge used for agricultural purposes. The annual average content of heavy metals in the study period remained at a similar level. Understanding the composition of the physico-chemical sludge waste is the basis for the decision over their processing, use or disposal. The precipitate may be disposed by using thermal methods for combustion of solid comprising 90% of dry matter.
Źródło:: Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 579-590
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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