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Tytuł:
Awareness of parents of preschool children about selected heavy metals in food
Świadomość rodziców dzieci w wieku przedszkolnym dotycząca wybranych metali ciężkich występujących w żywności
Autorzy:
Dolibóg, Magdalena
Osmala-Kurpiewska, Weronika
Powiązania:
https://bibliotekanauki.pl/articles/28408110.pdf
Data publikacji:
2024-02-29
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
children
heavy metals
food
awareness
health risk
food route
dzieci
metale ciężkie
żywność
świadomość
ryzyko zdrowotne
droga pokarmowa
Opis:
INTRODUCTION: Human activity has contributed to the widespread distribution of heavy metals in the natural environment. The effects of exposure to heavy metals may not become apparent until many years later. Understanding and understanding the health risks of heavy metals in food is essential to protect children’s health. The study aimed to assess the level of knowledge about heavy metals, their occurrence in food, and the health risks to children from eating food contaminated with heavy metals. MATERIAL AND METHODS: The research tool was the author’s questionnaire, consisting of the “specification” part and closed questions, mainly of a single choice. The study group consisted of 100 parents of two kindergartens located in the Silesian voivodeship. The results of the survey questionnaire were developed in Microsoft Office Excel 2019. Statistica 13 (StatSoft) was used for statistical analysis (chi-square test) and statistical significance was assumed at the level of α = 0.05. RESULTS: Parents of preschool-age children are not aware of the associated risks of exposure to heavy metals. Most of the respondents did not read the general information on the presence of heavy metals in food products. CONCLUSIONS: The awareness of preschool-age parents about selected heavy metals in food is low. It is recommended to implement educational activities to increase the level of parental knowledge about possible health consequences and ways to reduce the health risk resulting from exposure to heavy metals through food.
WSTĘP: Działalność człowieka przyczyniła się do szerokiego rozpowszechnienia metali ciężkich w środowisku naturalnym. Skutki narażenia na metale ciężkie mogą się ujawnić dopiero po upływie wielu lat. Narażenie dzieci na metale ciężkie drogą pokarmową może stanowić istotne ryzyko zdrowotne, dlatego wiedza oraz postawy zdrowotne rodziców i opiekunów prawnych mają niebagatelne znaczenie w zakresie minimalizacji ryzyka zdrowotnego dzieci. Celem pracy była ocena poziomu wiedzy rodziców na temat metali ciężkich, ich występowania w żywności oraz zagrożeń dla zdrowia dzieci, wynikających ze spożywania żywności zanieczyszczonej metalami ciężkimi. MATERIAŁ I METODY: Narzędzie badawcze stanowił autorski kwestionariusz ankiety, składający się z części „metryczka” oraz pytań zamkniętych, głównie jednokrotnego wyboru. Grupę badaną stanowiło 100 rodziców z dwóch placówek przedszkolnych zlokalizowanych na terenie województwa śląskiego. Wyniki kwestionariusza ankiety zostały opracowane w programie Microsoft Office Excel 2019. Za pomocą programu Statistica 13 (StatSoft) wykonano analizę statystyczną (test chi-kwadrat), a istotność statystyczną przyjęto na poziomie α = 0,05. WYNIKI: Rodzice dzieci w wieku przedszkolnym nie są świadomi zagrożeń związanych z ekspozycją na metale ciężkie. Większość respondentów nie zapoznawała się z informacjami ogólnymi na temat obecności metali ciężkich w produktach spożywczych. WNIOSKI: Świadomość rodziców dzieci w wieku przedszkolnym dotycząca wybranych metali ciężkich występujących w żywności jest niska. Wskazane jest wdrożenie działań edukacyjnych w celu zwiększenia poziomu wiedzy rodziców na temat możliwych następstw zdrowotnych i sposobów zmniejszania ryzyka zdrowotnego wynikającego z narażenia na metale ciężkie drogą pokarmową.
Źródło:
Annales Academiae Medicae Silesiensis; 2024, 78; 61-72
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metals in human milk: literature review
Metale ciężkie w pokarmie kobiecym: przegląd piśmiennictwa
Autorzy:
Młodawska, Marta
Młodawski, Jakub
Świercz, Anna
Świercz, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/30148305.pdf
Data publikacji:
2024
Wydawca:
Akademia Bialska im. Jana Pawła II
Tematy:
heavy metals
human milk
breastfeeding
mercury
lead
metale ciężkie
pokarm kobiecy
karmienie naturalne
rtęć
ołów
Opis:
The escalating global environmental pollution leads to the increased exposure to heavy metals, including chromium, mercury, copper, and lead. These substances ubiquitous in our environment and food, can induce severe health issues, including intellectual disabilities, kidney damage, and certain types of cancer. The article presents a current literature review concerning breast milk and its potential contamination with heavy metals. Research reveals varied levels of heavy metal contamination in human milk, contingent on geographical location and lifestyle factors. Some studies have detected a higher concentration of heavy metals in urban areas compared to suburban ones, while others have reported an increased level in the milk of women who smoke cigarettes. Moreover, the concentration of heavy metals in human milk often exceeded permissible limits set by the World Health Organization. Given the increasing exposure to heavy metals, it is imperative to monitor their concentration in food and conduct further studies to understand the risk factors for exposure.
Narastające globalne zanieczyszczenie środowiska prowadzi do zwiększonej ekspozycji na metale ciężkie, w tym chrom, rtęć, miedź i ołów. Substancje te, powszechne w naszym otoczeniu i żywności, mogą powodować poważne problemy zdrowotne, w tym niepełnosprawność intelektualną, uszkodzenie nerek i niektóre rodzaje nowotworów. W artykule został przedstawiony aktualny przegląd piśmiennictwa dotyczący pokarmu kobiecego i potencjalnego skażenia go metalami ciężkimi. Stwierdzono zróżnicowane poziomy zanieczyszczenia mleka kobiecego metalami ciężkimi w zależności od lokalizacji geograficznej i czynników stylu życia. Niektóre badania wykazały wyższe stężenie metali ciężkich w obszarach miejskich w porównaniu z przedmieściami, podczas gdy w innych stwierdzono zwiększony ich poziom w mleku kobiet palących papierosy. Co więcej, stężenie metali ciężkich w mleku kobiecym często przekraczało dopuszczalne limity ustalone przez Światową Organizację Zdrowia. Ze względu na rosnącą ekspozycję na metale ciężkie, niezbędne jest monitorowanie ich stężenia w żywności i przeprowadzanie dalszych badań, aby zrozumieć czynniki ryzyka ekspozycji.
Źródło:
Health Problems of Civilization; 2024, 18, 1; 55-61
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
„Tam, gdzie nas nie spotkamy, melancholia się nami nie nażre”. Romantyczna antropologia melancholiczna w polskim black metalu
„Where We Don’t Meet Each Other, the Melancholy Won’t Stuff Itself With Us”. Romantic Melancholic Anthropology in Polish Black Metal
Autorzy:
Barski, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/27307330.pdf
Data publikacji:
2023-12-15
Wydawca:
Komisja Nauk Filologicznych Oddziału Polskiej Akademii Nauk we Wrocławiu
Tematy:
melancholy
black metal
Romanticism
heavy metal
melancholia
romantyzm
Opis:
Among the many research fields, in terms of which heavy metal (counter)culture (more precisely, in this case, black metal) can be studied, the history of literature has a prominent place. The separation of the lyrics of the song from its musical layer makes it a poem which can be interpreted in various keys. As a result, it can also be established in various literary traditions. In opinion of the author – expressed also in other publications – black metal poetry has a romantic character for many reasons. In this article, literary studies combine with anthropological considerations. There is a specific concept of man that emerges from the interpretation of the lyrics, which makes us consider black metal musicians as “late grandchildren” of Romanticism, and black metal itself – as another incarnation of this movement in the history of culture. It turns out, that the most represented anthropological attitude which occurs in contemporary works of this genre is Romantic melancholy, the various manifestations of which are traced in each lyric.
Źródło:
Academic Journal of Modern Philology; 2023, 19; 9-23
2299-7164
2353-3218
Pojawia się w:
Academic Journal of Modern Philology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ability of Humic Acid in the Absorption of Heavy Metal Content of Lead and Iron in Fish Culture Media
Autorzy:
Kiswanto
Wintah
Powiązania:
https://bibliotekanauki.pl/articles/24201770.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
humic acid
heavy metals
fish farming media
Opis:
The young coal mining pits (young pits) found in West Aceh cause many problems. These pits that form ponds have the potential to be utilized for aquaculture activities. However, the main problem faced in the young pits is the high content of heavy metals. This makes the ponds dangerous for fish farming. Hazardous heavy metals in coal mines are Pb and Fe. Humic acid is one of the materials that can be used to minimize heavy metals and increase water pH. The use of humic acid is more efficient because this technology is easy and cheap and the raw materials are abundant. Humic acid acts as a substance of cation exchange ability found in compost. This research has a long-term goal of making humic acid contained in compost as an alternative material that can minimize heavy metals Pb and Fe, so that it can be used for fish farming activities. The specific objective is to determine the best capacity (dose of humic acid) in minimizing heavy metals and increasing the pH of young pond water in former mines and its effect on fish farming. This research method used a completely randomized design consisting of one factor, namely the dose of humic acid (0 g/L, 2.5 g/L, 5 g/L, 7.5 g/L) and three replications. The results showed that humic acid was able to minimize the content of heavy metals Pb and Fe in coal mine water with the best dose of 5 g/L. The percentage reduction produced was more than 90%. The results of fish rearing using ex-mining pond water treated with humic acid showed that the survival rate and growth rate of fish were higher.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 95--102
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Possibility of Heavy Metal Ions Removal from Aqueous Solutions on Fruit Pomace
Autorzy:
Krasowska, Małgorzata
Kowczyk-Sadowy, Małgorzata
Szatyłowicz, Ewa
Obidziński, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/24201639.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
fruit pomace
adsorption
heavy metals
Opis:
Pomace from apples, grapes, blackcurrants, and oranges is a waste product of fruit processing, which is formed during the production of juices. Pomace is a rich source of biologically active compounds such as polyphenols, carotenoids, or vitamins. They also contain pectin, cellulose, lignin, proteins, and minerals. All these components, apart from having many beneficial properties for human health, also show sorption properties towards heavy metal ions. Therefore, this study aimed to evaluate the possibility of removing lead (II) and cadmium (II) ions from aqueous solutions by adding apple, grape, black currant, and orange pomace as well as to determine the adsorption efficiency of selected heavy metals. The studies were carried out in model systems. The results of the research showed that lead (II) and cadmium (II) ions are adsorbed on fruit pomace. The highest removal of cadmium (II) ions was observed in orange pomace and of lead (II) ions in apple pomace. The maximum tested cadmium ions absorption capacity was: 0.117235 mg/g in the case of freeze-dried apple pomace; 0.08618 mg/g in the case of freeze-dried currant pomace; 0.21915 m/g in the case of freeze-dried grape pomace and 0.29549 mg/g in the case of freeze-dried orange pomace. On the other hand, the maximum absorption of lead ions was: 0.457 mg/g in the case of freeze-dried apple pomace; 0.442 mg/g in the case of freeze-dried currant pomace; 0.3445 mg/g in the case of freeze-dried grape pomace and 0.421 mg/g in the case of freeze-dried orange pomace. On the basis of the performed measurements, it can be concluded that the tested waste can potentially be used as a cheap biosorbent for removing heavy metal ions from dilute aqueous solutions.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 169--177
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anemia – a scourge to maternal and child development in Bihar, India
Autorzy:
Nirala, Santosh Kumar
Rao, Rajath
Naik, Bijaya Nanda
Patil, Shreyas
Verma, Manisha
Singh, CM
Pandey, Sanjay
Powiązania:
https://bibliotekanauki.pl/articles/25108370.pdf
Data publikacji:
2023-06-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
anemia
diet habits
heavy metal toxicity
iron deficiency anemia
maternal child health services
socioeconomic factors
Opis:
Introduction and aim. Anemia remains a leading contributor to years lived with disability (YLDs), being responsible for 50.3 million (5.82%) YLDs worldwide and 19.3 million (12.03%) YLDs in India, respectively. Results of the National Family Health Survey 2019-2021 (NFHS-5) suggest a high burden of anemia in India among women of reproductive age and children aged 6-59 months at the national level (57%, 67.1%), and in the state of Bihar, India (63.5%, 69.4%). Iron deficiency is the leading cause, accounting for more than half the cases. Anemia bodes harmful implications for both the mother and child, with long-lasting consequences for the latter. Anemia control programs have yielded little benefit despite efforts stretching over five decades. This narrative review aims to highlight the burden of anemia and the probable factors behind it among under-5 children and women of reproductive age in the Indian state of Bihar. Material and methods. The paper is a narrative review. The following databases were used to search and select literature: PubMed, Web of Science, Scopus, and Google Scholar. In addition, the websites of relevant government departments and national health programs were searched for pertinent material. Analysis of the literature. A multitude of reasons seem to be behind the unabated high prevalence in Bihar: low socioeconomic status, gender disparities, traditional customs and practices, food insecurity, lack of diverse diets, poor consumption, and no adherence to iron and folic acid (IFA) supplements, groundwater contamination with arsenic and fluoride, and supply chain mismanagement, all playing roles of varying degree. Conclusion. An all-encompassing approach and not merely the provision of IFA supplements are necessary to unravel the intricate web of factors that lead to anemia.
Źródło:
European Journal of Clinical and Experimental Medicine; 2023, 2; 416-423
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Fly Ash from Thermal Treatment of Sewage Sludge According to the Applicable Standards
Autorzy:
Rutkowska, Gabriela
Powiązania:
https://bibliotekanauki.pl/articles/24201787.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
fly ash
sewage sludge
physical and chemical properties
concrete
compressive strength
heavy metals
Opis:
The restrictions on carbon dioxide emissions introduced by the European Union encourage experimental work on new generation materials containing smaller amounts of clinker. Currently, silica fly ash from the combustion of hard coal is widely used in cement and concrete technology in Europe and in Poland. Their wide application is mainly determined by their chemical and phase composition, especially pozzolanic activity, their high fineness, similar to cement. The aim of the research was to assess the properties of fly ash from thermal treatment of sewage sludge in terms of use in concrete technology in relation to EN 450-1, ASTM-C618-03 and ASTM C379-65T. The obtained test results confirm that the tested material has a different physicochemical composition and does not meet the requirements related to the use of ash in the production of concrete. In addition, the research showed the possibility of producing ordinary concrete, modified with fly ash from thermal treatment of sewage sludge. The average compressive strength for concrete containing 15% of ash from Cracow was set at 48.1 MPa and 49.2 MPa after 28 and 56 days of maturation, for ash from Warsaw at 42.0 MPa and 45.1 MPa, and for ash from Łódź at 36.2 MPa and 36.2 MPa. The determined concentrations of heavy metals are below the maximum values to be met when discharging waste water into the ground or water, the leaching limits required for accepting inert waste for disposal and for substances particularly harmful to the aquatic environment. On this basis, it was found that the migration of heavy metals from concretes with ash addition to the aquatic environment is insignificant and should not be a significant problem.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 20--34
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Heavy Metals Contamination in Spoil Heaps of Ain Aouda Mine (Taza, Morocco)
Autorzy:
Assabar, Narmine
Lahmidi, Ikram
Jabrane, Raouf
Powiązania:
https://bibliotekanauki.pl/articles/24201747.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
pollution index
Ain Aouda mine
geoaccumulation index
enrichment factor
Opis:
The purpose of this study is to evaluate the level of heavy metal contamination in the spoil heaps of the former Ain Aouda mine (Taza). In this regard, solid samples of the study area were sampled. The set of analyses carried out have detected the presence of zinc (Zn), lead (Pb), copper (Cu), arsenic (As) and nickel (Ni) that remain in these metal discharges. The calculation of contamination/pollution indices: the Geo Accumulation Index (Igeo), the Enrichment Factor (EF) and the Pollution Index (IP) were used to predict the extent of heavy metal contamination. The results of this study suggest that the spoil heaps reveal polymetallic contaminations allowing the trace metal elements to be classified in the following order Zn ˃ Pb ˃ As ˃ Cu > Ni. Knowing well that the alteration and erosion of this stock of mine waste could contribute to the degradation of the natural environment by these elements that are present.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 224--231
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Benefits and Risks of Liquid Sewage Sludge Recycling in Agricultural Spreading – A Case Study of WWTP of Skhirat, Morocco
Autorzy:
Achkir, Abdelmajid
Aouragh, Abdelhakim
El Mahi, Mohammed
Lotfi, El Mostapha
Kabriti, Mohamed
Abid, Abdesalam
El Moussaoui, Tawfik
Yagoubi, Maâmar
Powiązania:
https://bibliotekanauki.pl/articles/2202347.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sewage sludge
WWTP
wastewater treatment plant
Skhirat
Morocco
liquid sludge
physicochemical parameter
bacteriological parameter
heavy metals
agricultural
Opis:
The sewage sludge recycling as an agricultural land resource has received a great deal of attention worldwide. This practice has highly increased because of ever-increasing municipal wastewater production and the awareness of its fertilizing potential as amendment resources. However, there is a concern about land spreading linked mainly to health associated risks due to the presence of diverse pollutants. Thus, sewage spreading management is a key factor the guarantees benefits and avoids risks. The present work aimed to investigate the benefits and risks of sewage sludge (SS) application on agricultural land. To this end, physicochemical main parameters and bacteriological indicators, fecal coliform (FC) and fecal streptococcus (FS), of the sewage sludge generated form WWTP of Skhirat, Morocco, were performed during the period 2018–2019. The obtained results of physicochemical parameters reveal high concentration of organic matter in SS, which reach 96.3 mg/l, and in nutrients. Indeed, total Kjeldahl nitrogen TKN reaches a maximum of 3791 mg/l, potassium K+ reaches 58.71 mg/l. In addition, the average content of FC and FS are around 5.40 CFU/ml and 5.85 CFU/ml, respectively, whereas total phosphorus reaches 508.25 mg/l. In addition, concentrations of micronutrients such as Cl-, SO42-, Ca2+, Mg2+, and Na+ were high, which is interesting and could benefit for both soils and plant. Furthermore, this sewage sludge contains high concentration of heavy metals, mainly zinc and copper which could limit reuse in land spreading. The obtained results were compared to the applied standards and directives established within the framework of the agricultural spreading.
Źródło:
Journal of Ecological Engineering; 2023, 24, 1; 277--288
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Black metal jako kontynuacja romantyzmu? O figurze artysty i stosunku do natury jako korzeniach gatunku
Black metal as a continuation of Romanticism? About the figure of an artist and the attitude to Nature as the roots of the genre
Autorzy:
Barski, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/29520346.pdf
Data publikacji:
2023-12-18
Wydawca:
Uniwersytet Bielsko-Bialski
Tematy:
black metal
romantyzm
heavy metal
metal studies
ekokrytyka
artysta
natura
Romanticism
ecocriticism
artist
nature
Opis:
The main purpose of this article is to determine the roots of the extreme music genre black metal. The author notices links to the artistic anthropology of Roman ticism and the reception of nature characteristic of that time. Considering the first problem, he draws attention to the relationship between the lyrical message of black metal songs and political life, as well as to the realization of the romantic-modernist figure of the artist-madman and the tormented artist who also has mediumistic features. An important element of this image is transgressive Satanism. The second group of problems is connected with the romantic attitude toward nature that is observed in black metal music. Nature there becomes a space to escape from the modern, technocratic, neoliberal world and offers a chance to consolidate an indi vidual’s identity. Much attention is paid to the relationship between the American black metal scene and poets considered to be the precursors of ecocriticism; atten tion is also drawn to the resentment-based return of nationalizing black metal to a rustic past.
Źródło:
Świat i Słowo; 2023, 41, 2; 325-345
1731-3317
Pojawia się w:
Świat i Słowo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of sewage sludge composition for agricultural use
Charakterystyka składu osadów ściekowych przeznaczonych do celów rolniczych
Autorzy:
Vitenko, Tetiana
Marynenko, Nataliia
Kramar, Iryna
Powiązania:
https://bibliotekanauki.pl/articles/24201151.pdf
Data publikacji:
2023
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
sewage sludge
sewage treatment
heavy metals
sludge's physical composition
sludge's chemical composition
osady ściekowe
oczyszczanie ścieków
metale ciężkie
skład fizyczny osadów ściekowych
skład chemiczny osadów ściekowych
Opis:
The article focuses on the research conducted on sewage sludge in Ternopil City, Ukraine, with a specific emphasis on its microelement composition and implications for disposal and utilisation. Bacterial contamination in both old and new sludge storage facilities is revealed by the study. It is found that the sludge holds potential as a fertiliser due to its nutrient content and organic matter, although adjustments may be necessary for specific soil conditions. However, it is determined that the permissible limits for agricultural use are exceeded by heavy metal concentrations, indicating pollution resulting from landfills, old pipes, and intensive agriculture. According to existing regulations, the sludge is considered suitable only for composting. The importance of sludge monitoring, treatment, and management is underscored by the findings, as they are crucial for ensuring safe disposal, mitigating environmental risks, and addressing potential health hazards.
Artykuł koncentruje się na badaniach przeprowadzonych na osadach ściekowych w Tarnopolu na Ukrainie, ze szczególnym naciskiem na ich skład mikroelementowy oraz implikacje dla ich usuwania i wykorzystania. Badanie ujawniło zanieczyszczenie bakteryjne zarówno w starych, jak i nowych obiektach składowania osadów ściekowych. Stwierdzono, że osad ma potencjał jako nawóz ze względu na zawartość składników odżywczych i materii organicznej, chociaż może być konieczne dostosowanie do określonych warunków glebowych. Ustalono jednak, że dopuszczalne limity dla zastosowań rolniczych są przekraczane przez stężenia metali ciężkich, co wskazuje na zanieczyszczenie wynikające ze składowisk odpadów, starych rur i intensywnego rolnictwa. Zgodnie z obowiązującymi przepisami osad jest uważany za odpowiedni tylko do kompostowania. Wyniki badań podkreślają znaczenie monitorowania, przetwarzania i zarządzania osadami ściekowymi, ponieważ mają one kluczowe znaczenie dla zapewnienia bezpiecznej utylizacji, łagodzenia zagrożeń dla środowiska i przeciwdziałania potencjalnym zagrożeniom dla zdrowia.
Źródło:
Ekonomia i Środowisko; 2023, 2; 296--307
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crosslinked poly(hydroxybutyl acrylate-co-acrylamide) based hydrogels : synthesis, characterization, and performance evaluation in heavy metal removal
Hydrożele na bazie usieciowanego poli(akrylanu hydroksybutylo-co-akrylamidu) : synteza, charakterystyka i ocena zdolności do usuwania metali ciężkich
Autorzy:
Abdallah, Zahraa Saadi
Mohammed, Ameen Hadi
Powiązania:
https://bibliotekanauki.pl/articles/24202779.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:
superabsorbent polymer
hydroxybutyl acrylate
acrylamide
adsorption properties
heavy metal ions removal
polimery superchłonne
akrylan hydroksybutylu
akryloamid
właściwości adsorpcyjne
usuwanie jonów metali ciężkich
Opis:
By radical polymerization, two series of superabsorbent hydrogels of hydroxybutyl acrylate and acrylamide copolymers, poly(HBA-co-AAm), were obtained. In the first series, the ratio of hydroxybutyl acrylate to acrylamide was optimized with a constant amount of methylene bisacrylamide (MBA) as a cross-linking agent. In the second series, the amount of MBA was changed at a fixed monomer ratio. The structure of the copolymers was confirmed by the FTIR method. Swelling parameters and mechanical properties were tested. Hydrogels with a high Young’s modulus and a high degree of swelling were selected for the study of adsorption properties towards Co2+, Ni2+ and Cd2+ ions. The influence of basic factors such as adsorbent dose, exposure time and pH on adsorption efficiency was also investigated. The ability to adsorb heavy metal ions changed as follows: Co2+> Ni2+> Cd2+.
Metodą polimeryzacji rodnikowej otrzymano dwie serie superchłonnych hydrożeli kopolimerów akrylanu hydroksybutylu i akryloamidu, poli(HBA-co-AAm), otrzymano. W pierwszej serii optymalizowano stosunek akrylanu hydroksybutylu do akryloamidu przy stałej ilości metylenobisakryloamidu (MBA) jako czynnika sieciującego. W drugiej serii przy ustalonym stosunku monomerów zmieniano ilość MBA. Strukturę kopolimerów potwierdzono metodą FTIR. Zbadano parametry pęcznienia oraz właściwości mechaniczne. Do badań właściwości adsorpcyjnych w stosunku do jonów Co2+, Ni2+ i Cd2+ wytypowano hydrożele o wysokim module Younga i wysokim stopniu pęcznienia. Zbadano również wpływ podstawowych czynników, takich jak dawka adsorbentu, czas ekspozycji i pH na efektywność adsorpcji. Zdolność do adsorpcji jonów metali ciężkich zmieniała się następująco: Co2+> Ni2+> Cd2+.
Źródło:
Polimery; 2023, 68, 2; 86--92
0032-2725
Pojawia się w:
Polimery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of Heavy Metals in Bee Honey as a Bioindicator in the Istog, Drenas and Kastriot Regions
Autorzy:
Demaku, Skender
Aliu, Arbnorë
Sylejmani, Donika
Ahmetaj, Blerina
Halili, Jeton
Powiązania:
https://bibliotekanauki.pl/articles/24201705.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
pollution
environment
honey
heavy metals
Opis:
The major goal of this research was to employ honey as a bio-indicator to identify the heavy metal levels in bee honey in the Istog, Drenas, and Kastriot regions. As a result, honey was purposely tested in these locations, and two industrial specific areas were chosen for examination and analysis: Kastriot (Graboc) and Drenas (Vrboc), as these are considered to be among the most industrial polluted areas. A honey sample was also taken in the Istog (Vrell, as a clean area) region in order to compare not just honey, but also the area where the bee obtains nectar, as well as the sources of pollution discharge into the environment. Concentrations of heavy metals in honey, (min. and max.) amounted to: Zn (8.705–9.804 mg/kg), Mn (5.620–5.718 mg/kg), Fe (3.635–3.745 mg/kg) and Cu (2.295–2.299 mg/kg). In contrast, lower concentrations of metals, have been observed for: Ni (0.640–1.126 mg/kg), Pb (0.235–0.268 mg/kg), As (0.107–0.199 mg/kg), Cd (0.040–0.058 mg/kg) and Cr (0.025–0.036 mg/kg) while elements such as; Hg, and Co, are almost undetected. The study of hierarchical clusters revealed several groupings of elements with geogenic and anthropogenic origins. The concentrations of heavy metals selected for honey were compared to standards of other countries, such as Poland and other European Union countries. Samples were taken in October 2020 and September 2021. The concentration of heavy metals was determined using inductively coupled plasma optical emission spectrometry, ICP OES.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 191--200
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic performance of bridge piers impacted by heavy trucks
Autorzy:
Huang, Yao
Powiązania:
https://bibliotekanauki.pl/articles/27312166.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
ciężarówka
uderzenie pojazdu
most
metoda elementów skończonych
zabezpieczenie
wydajność dynamiczna
heavy truck
vehicle impact
bridge
finite element method
anti-impact protection
dynamic performance
Opis:
Vehicle-bridge collision accidents often result in significant economic losses and negative social effects, with heavy trucks being the most destructive to bridge structures. Therefore, this study uses a high-precision finite element method to investigate the impact resistance of concrete bridge piers when subjected to heavy truck impact. The main conclusions of this paper are as follows: (1) When heavy trucks collide with bridge piers, two peak impact forces are generated due to engine and cargo collisions. The peak collision force generated by engine impact is 17.7% greater than that generated by cargo impact. (2) The damage to the bridge, when impacted by heavy trucks, is mainly concentrated on the affected pier. The primary damage characteristics of the bridge piers include punching shear damage at the impact point, tensile damage at the backside, and shear damage at the pier top. (3) The peak values of shear force and bending moment both appear at the bottom of the pier, and the combination of the two causes serious flexural-shear failure damage at the bottom of the pier. (4) The axial force is fluted along the pier height, and the axial force at the top and bottom of the pier is the largest, while the axial force at the middle section is relatively small. The instantaneous axial force of bridge pier will reach more than 2 times the axial force during operational period, seriously threatening the safety of bridge. Overall, this study provides valuable insights into the impact resistance of concrete bridge piers when subjected to heavy truck impact, which can help engineers and policymakers in designing more robust and safer bridges.
Źródło:
Archives of Civil Engineering; 2023, 69, 3; 173--185
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological assessment of soil contamination with heavy metals due to the application of mineral fertilisers
Autorzy:
Suleimenova, Naziya
Togisbayeva, Ainura
Orynbasarova, Gulnar
Kuandykova, Elnara
Yerekeyeva, Svetlana
Powiązania:
https://bibliotekanauki.pl/articles/2203536.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
application
assessment
cultivation technology
heavy metals
mineral fertilisers
soil ecology
soil pollution
soybean
fertilisers use
yield
Opis:
The article presents the results of monitoring the aftereffect of the use of excessive zonal doses of mineral fertilisers on soil contamination with heavy metals (HM). With traditional soybean cultivation technology, the level of soil contamination when applying excessive doses (N60 P180 K90) of fertilisers is quite high and indicates violations of the ecological balance of the agroecosystem. By the nature of the accumulation of heavy metals in meadow-chestnut soil, depending on the application of the studied doses (P60 K30, N30 P60 K30, N60 P180K90) of fertiliser, the content of HM (Pb, Zn, Cd) increases. The greatest contamination of the soil with Cu was revealed, the content of which increases to 3.2 mg∙kg-1 of soil, which is higher than the threshold of the maximum permissible concentration (MPC) - 3.0 mg∙kg-1. According to the level of contamination of the soil with copper, it belongs to the highly dangerous classes. In a comparative assessment of the level of soil contamination with HM, optimal norms of mineral fertilisers have been established, namely, against the background of effective resource-saving technology for growing soybeans. The application of fertilisers at a dose of P60 K30 and N30 P60 K30 does not significantly affect the level of soil contamination with HM, optimises the ecological state and nutrient regime of the soil, preserves and restores soil fertility indicators, and increases soybean productivity. This resource-saving technology provides a safe environment for soybean cultivation and a significant increase of 34.5-38.6% in crop productivity (0.53-0.76 Mg∙ha-1) and yield (2.57 Mg∙ha-1).
Źródło:
Journal of Water and Land Development; 2023, 56; 74--80
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł

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