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Wyświetlanie 1-15 z 143
Tytuł:
Selected environmental factors in the waters of Admiralty Bay (King George Island, South Shetland Islands) December 1978—February 1979
Autorzy:
Samp, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2058210.pdf
Data publikacji:
1980
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctica
nutrients
oxygen
Źródło:
Polish Polar Research; 1980, 1, 4; 53-66
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica
Autorzy:
Coufalík, Pavel
Nývlt, Daniel
Prochazková, Petra
Zvěřina, Ondřej
Trnková, Kateřina
Skácelová, Kateřina
Komárek, Josef
Powiązania:
https://bibliotekanauki.pl/articles/2046797.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
algae
Antarctica
Cyanobacteria
nutrients
Źródło:
Polish Polar Research; 2016, 37, 4; 477-491
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrochemical conditions of three lakes located in the West Pomeranian region in the annual cycle
Autorzy:
Tórz, Agnieszka
Bonisławska, Małgorzata
Nędzarek, Arkadiusz
Rybczyk, Agnieszka
Tański, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2203559.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
eutrophication
nitrogen
nutrients
phosphorus
Opis:
The objective of the study was to trace the variability of the hydrochemical conditions in three lakes of the West Pomeranian Voivodeship (Poland) - Starzyca, Maszewskie and Nowogardzkie in the annual cycle. The research was done in 2018-2019, and samples for analysis were collected 4 times a year. All analyses were performed applying standard methods. Such hydrochemical indices were determined as dissolved oxygen, chemical oxygen demand, content of orthophosphates, total phosphorus, nitrite, nitrate, ammonium, chlorophyll a and iron. The study showed that all lakes in the research cycle were characterised by a polymictic type of water mixing, and the trophic level, based on the adopted criteria, indicated advanced eutrophy, which may also be caused by anthropogenic pressure. Oxygen conditions characterised by deoxidation of the waters in the bottom layer in the spring and summer seasons, and clear oxygenation in the surface water layer (in Lake Maszewskie reaching even 188.5% in the spring) confirm the significant advancement of the eutrophication process. The supply of phosphorus and nitrogen in spring from pelagic waters in the waters of the examined lakes influences concentrations of chlorophyll a in the summer. The influence of “internal supply” (bottom waters and bottom sediments) on the amount of nutrients available for autotrophs is clearly visible in the analysed lakes - an increase in nitrogen and mineral phosphorus concentrations in relation to surface waters was observed in the bottom layer.
Źródło:
Journal of Water and Land Development; 2023, 56; 262--274
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Basic nutrient requirements of the domestic quails under tropical conditions: A review
Autorzy:
Altine, S.
Sabo, M. N.
Muhammad, N.
Abubakar, A.
Saulawa, L. A.
Powiązania:
https://bibliotekanauki.pl/articles/1182937.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
nutrients
japanese quails
tropical conditions
Opis:
Due to multiple benefits and prolific nature of the domestic quails, a review on basic nutrient requirements is highly relevant. Requirement under tropical conditions for water, protein, essential and non-essential amino acids were reviewed. Other basic requirements that included energy, vitamins, major and micro minerals were also captured.
Źródło:
World Scientific News; 2016, 49, 2; 223-235
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Effective Microorganisms Technology as a lake restoration tool - a case study of Muchawka Reservoir
Autorzy:
Sitarek, M.
Napiórkowska-Krzebietke, A.
Mazur, R.
Czarnecki, B.
Pyka, J.P.
Stawecki, K.
Olech, M.
Sołtysiak, S.
Kapusta, A.
Powiązania:
https://bibliotekanauki.pl/articles/1190178.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
restoration
eutrophication
remediation
EM
nutrients
Opis:
This paper presents the effects of an application of Effective Microorganisms (EM) technology in line with the method developed by Sitarek, thus evaluating its effectiveness as a tool in the biological restoration of a water body. In 2012-2013, EM was applied in Muchawka Reservoir situated in the town of Siedlce (eastern Poland). Analyses of water parameters and bottom sediments were carried out in 2011, before the EM technology was implemented and again in 2013-2015 after the EM application was completed. In spring 2011, the average total nitrogen (TN) content at the surface was 3.1 mg dm-3 while the total mineral nitrogen content equalled 0.893 mg dm-3. After the EM application was completed, in the summer of 2013, the TN content was on average 2.5 mg dm-3. The content of nitrates and nitrites in the summer of 2013 reached 1.20 mg dm-3 at the most. Lower levels of such forms of nitrogen were observed in 2013 and also in subsequent years at the bathing beach (site 1) and the hostel (site 3) than at the inflow (site 4). Likewise, the highest content of phosphates was recorded at the inflow site (4), being four -fold lower at the other sites (1, 3). The average content of TP before the EM technology was applied was 0.205 mg dm-3, whereas after the application of effective microorganisms it fell down to 0.189 mg dm-3 (2013-2015). Only slight changes of TSITP indicated that waters in Muchawka Reservoir were eutrophic. After EM was applied twice, no streaks, cyanobacterial scums or pollution at the bathing sites were visible. The bacteriological evaluation of the water samples was carried out by the County Branch of the State Sanitary Inspectorate in Siedlce. The bacteriological water quality was described as “excellent”. These findings suggest that the method developed by Sitarek, combined with probiotic preparations, could be a useful tool in the restoration of water bodies, but the conclusion requires further detailed verification.
Źródło:
Journal of Elementology; 2017, 22, 2; 529-543
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photochemical investigation of Abelmochus esculentus
Autorzy:
Verma, Vishwa Nath
Powiązania:
https://bibliotekanauki.pl/articles/1118240.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
AAS
Abelmochus esculentus
Nutrients
Okra
Opis:
Okra is an edible fruit that is commonly known as a vegetable. It is available in most parts of the world generally throughout the year. The scientific name of okra is ‘Abelmochus esculentus or Hibiscus esculentus. The different varieties of this fruit are reflected in variation in shape, size and, more importantly, taste. Okra is known by different local names in different countries. Since okra has very interesting nutritional properties, it has attracted research. In the present study, attention has been paid to investigate the nutrients it holds that are essential for a healthy body. Flame absorption spectrophotometer was used to ascertain Ca, Cr, Cu, Fe, Mg, Mn, Pb, and Zn content. The amount of calcium was found highest at 4582.85 mg/kg, 1067.23 mg/kg and 1816.37 mg/kg in raw pod flesh, unripened seeds and ripened seeds, respectively. Pb and Cr were not detected at all, while the highest value of nitrogen (4.32%) was found in unripened pods.
Źródło:
World News of Natural Sciences; 2017, 9; 45-51
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of Constructed Wetlands for Dairy Wastewater Treatment
Efektywność złóż hydrofitowych w oczyszczaniu ścieków mleczarskich
Autorzy:
Dąbrowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/388226.pdf
Data publikacji:
2011
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
constructed wetlands
dairy wastewater
nutrients
Opis:
There are 9 dairy facilities having their own wastewater treatment plants in Podlasie province. In majority, they were built in 70’s of the 20th century, when “Promlecz” technology based on high and low-loaded sludge activated chambers dominated. According to data from 2008, the amount of disposed wastewaters is from 470 to 5200 m3 d–1, at personal equivalent (P.E.) from 7130 to 277 000. Most of wastewater treatment plants requires to be modernized due to their poor technical status along with the increase of production, which is associated with the quantity of generated wastewaters, sludge, and reject water that should be processed. In the case of small treatment plants, the constructed wetland method may be an alternative for advanced and expensive technologies that are usually incorporated during modernization. Vertical and horizontal-flow wetlands can successfully work as a second stage of dairy wastewater purification after their preliminary mechanical and biological treatment. The study was carried out on a base of existing installation designed by the author and working in dairy wastewater treatment plant in Wysokie Mazowieckie. Studies were concentrated upon applying the hybrid system consisting of vertical-flow constructed wetland (VF-CW) and horizontal-flow constructed wetland (HF-CW). Wastewater after de- -phosphatation and high-loaded sludge activated chamber were subjected to purification. Mean pollution concentrations in dairy wastewater taken to the researches were: BOD5 (234.1 mg O2 dm–3), COD (332.8 mg O2 dm–3), Kjeldahl’s nitrogen (25.9 mg NTKN dm–3), ammonium nitrogen (13.9 mg N dm–3), total phosphorus (10.9 mg PT dm–3). BOD5 removal efficiency was 84.8 %, Kjeldahl’s nitrogen 81.0 %, ammonium nitrogen 91.0 %, and total phosphorus 39 %, on average. The study confirmed the usefulness of constructed wetland method applied after mechanical and biological stages at dairy wastewater treatment plants.
Na terenie województwa podlaskiego działa 9 zakładów mleczarskich korzystających z własnych oczyszczalni ścieków. W większooeci są to obiekty z lat 70. ubiegłego wieku, kiedy to w kraju dominowała technologia „Promlecz” oparta na komorach osadu wysoko- i niskoobciążonego. Ilość odprowadzanych ścieków wynosi według danych z roku 2008 od 470 do 5200 m3 d–1, równoważna liczba mieszkańców (P.E.) waha się od 7130 do 27 7000. Większość oczyszczalni wymaga modernizacji ze względu na ich stan techniczny, jak i wzrost produkcji w zakładach, co przekłada się na ilość generowanych ścieków, osadów i odcieków związanych z ich przeróbką. Metoda hydrofitowa w przypadku małych oczyszczalni mleczarskich może stanowić alternatywę dla zaawansowanych i kosztownych technologii z reguły stosowanych przy ich modernizacji. Złoża o przepływie pionowym i poziomym mogą z powodzeniem pracować jako drugi stopień oczyszczania ścieków mleczarskich po ich wstępnym mechanicznym i biologicznym oczyszczeniu. Wykonane badania przeprowadzono, opierając się na instalacji badawczej zaprojektowanej przez autora i działającej na terenie oczyszczalni ścieków mleczarskich w Wysokiem Mazowieckiem. Badania koncentrowały się na zastosowaniu układu hybrydowego składającego się ze złoża o przepływie pionowym (VF-CW) oraz poziomym (HF-CW). Oczyszczaniu poddano ścieki po komorze defosfatacji i komorze osadu wysokościążonego. Średnia wartości wskaźników zanieczyszczeń w ściekach mleczarskich poddanych badaniom wynosiły: BZT5 (234,1 mg O2 d–3), ChZT (332,8 mg O2 d–3), azot Kjeldahla (25,9 mg NTKN d–3), azot amonowy (13,9 mg N-NH4 d–3), fosfor całkowity (10,9 mg PT d–3). Efektywność usuwania BZT5 wynosiła średnio 84,8 %, ChZT 85,3 %, azotu Kjeldahla 81,0 %, azotu amonowego 91,0 % i fosforu ogólnego 39 %. Badania udowodniły przydatność zastosowania metody hydrofitowej po stopniu mechanicznym i biologicznym w oczyszczalniach ścieków mleczarskich.
Źródło:
Ecological Chemistry and Engineering. A; 2011, 18, 2; 175-181
1898-6188
2084-4530
Pojawia się w:
Ecological Chemistry and Engineering. A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of mineral elements of green and withered brown leaves of Tectona grandis Linn in Nigeria
Autorzy:
Adetola, O. O.
Powiązania:
https://bibliotekanauki.pl/articles/1059536.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Antinutritional Factors
Mineral nutrients
Tectona grandis
Opis:
Plant mineral elements play a special role in the maintenance of good health. Nigeria is rich in natural wealth and there is an ample scope to explore mineral constituents from the plant kingdom. Teak is an exotic tree in Nigeria but easily grows on almost all soil types in the country. This research aimed at comparatively investigating the macro nutrient status of both withered brown leaf and green leaf of teak from Onigambari plantation. The result of the analysis shows that Green T. grandis leaves contains Sodium 0.488/48.8%,Calcium 0.162/16.2%, Magnesium 0.034/3.4%, Potassium 0.065/6.5% and phosphorus 0.0006/0.06% respectively while the withered brown leaves contains Sodium 0.488/48.8%, Calcium 0.174/17.4%, Magnesium 0.034/3.4%, Potassium 0.046/4.6% and phosphorus 0.005/0.5% respectively. Also the trace elements contents of Green T. grandis leaves contains Iron 0.41/41%, Copper 0.067/6.7%, Manganese 0.010/1%, Zinc 0.005/0.5%, Lead 0.004/0.4%, Chromium 0.002/0.2%, Cadmium 0.00002/0.002% respectively. While the Withered brown T. grandis contains Iron 0.53/53%, Copper 0.064/6.4%, Manganese 0.014/1.4%, Zinc 0.006/0.6%, Lead 0.003/0.3%, Chromium 0.003/0.3%, Cadmium 0.0001/0.01% respectively. The result of this analysis shows that withered T. grandis leaves is a good source of iron, however both Green and withered T. grandis leaves are good sources of Na, Ca, Fe and Cu. The result also shows that both samples are non toxic due to the low amount of lead.
Źródło:
World Scientific News; 2019, 128, 2; 426-432
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of harvest waste in soilless agriculture tomato cultivation
Autorzy:
Boyaci, Sedat
Abaci Bayar, Ahu Alev
Başak, Hakan
Powiązania:
https://bibliotekanauki.pl/articles/2131637.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
plant wastes
recycle
tomato
plant nutrients
Opis:
In this study, it was carried out in order to determine the amount of plant nutrients that can be obtained from the wastes of tomato plants grown with soilless agriculture technique in the greenhouse and to make suggestions for evaluation possibilities. For this purpose, cocopeat and plant samples were taken from the soilless greenhouse where tomatoes were grown at the end of production. The stem, leaf, fruit and root of the collected cocopeat and plant samples were separated and N, P, K, analyzes were made in these separated samples. According to the results obtained, the amount of N that can be added to the soil with the cocopeat wastes is determined as 10.58 kg, the amount of P 0.09 kg and the amount of K 0.52 kg for one decare area. The total N amount that can be gained from the roots, stems, leaves and fruits of the waste tomato plant per decare area was determined as 6.65-11.97 kg, P content 1.22-2.52 kg and K amount between 5.10-18.21 kg. Considering the distribution of the amount of NPK that can be added to the soil according to the plant parts. On average, 4.18 kg in root, 2.50 kg in stem, 7.58 kg in leaf and 7.46 kg in fruit were found to be wasted due to not evaluating plant wastes. The organ with the highest N content among plant parts is the leaf, and 42.73% of the total N is found in the leaf. P and K are mostly found in fruits. In addition, 41.73% of P and 36.62% of K are excreted with fruit. It will be possible to improve the soils with insufficient organic matter content throughout Turkey by composting the wastes from greenhouses. In addition, it has been determined that these wastes are very important in terms of reducing the visual pollution caused by these wastes, harmful emissions that will arise as a result of burning and bringing them into the economy.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2022, nr I/1; 29-42
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal Changes in the Reduction of Biogenic Compounds In Wastewater Treatment Plants Based on Hydroponic Technology
Autorzy:
Bawiec, A.
Pawęska, K.
Pulikowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/124103.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
hydroponic technology
treatment effectiveness
nutrients removal
Opis:
The study presents the results of the treatment of domestic and industrial wastewater with respect to the reduction of nitrogen and phosphorus compounds. The analysis encompasses the results of physical and chemical tests of effluents from two facilities based on hydroponic technology: wastewater treatment plants with hydroponic lagoons using the BIOPAX technology – Paczków, Poland and the Organica technology – Szarvas, Hungary. Monthly treatment effectiveness was determined basing on these analyses. The composition of wastewater flowing into the lagoon (after mechanical treatment) and wastewater discharged to the collector in 2009–2011 was subject to physical and chemical analysis in both facilities. The effluent quality was determined basing on the concentration of total phosphorus, total nitrogen and ammonium nitrogen. Mean annual results of the operation of both objects were high. For the wastewater treatment plant in Paczkow, operating in the BIOPAX technology, the effectiveness of treatment with respect to total nitrogen throughout the analysed period ranged from 76.9–84.4%. Total phosphorus was eliminated from wastewater with an effectiveness of 96.4–98.0%. Such high reduction level was caused by the application of additional precipitation process in the chambers of activated sludge reactor. The hydroponic plant in Szarvas (Organica technology) was characterised by a high effectiveness of reduction with respect to ammonium nitrogen: 92.0–93.0%, while the reduction of total phosphorus fell into the range 49.3–55.3%.
Źródło:
Journal of Ecological Engineering; 2016, 17, 2; 128-134
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovative NPK Fertilizers based on Polyacrylamide and Polyvinyl Alcohol with Controlled Release of Nutrients
Autorzy:
Białkowska, Anita
Borycka, Bożena
Bakar, Mohamed
Rzany, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2174821.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
polyacrylamide
fertilizers
polyvinyl alcohol
nutrients release
Opis:
The aim of the present work was the preparation and properties evaluation of two innovative fertilizers based on multicomponent polymers characterized by a controlled release of nutrients. One method was based on a multi-component liquid containing different amounts of microelements NPK 12-5-6 fertilizers with polyacrylamide hydrogel beads. The second method concerned the cross-linking of biodegradable polyvinyl alcohol with multi-component NPK fertilizers. Polyacrylamide-based compositions with the highest amount of NPK salts as well as polyvinyl alcohol-based fertilizers in dense gel form, based on 60 phr crosslinking concentrate have shown optimal properties. Regardless of the type of fertilizers used, their components were released slowly. The obtained fertilizers were classifi ed according to the kinetics of nutrient release. Fertilizers made from polyacrylamide based fertilizers have been classifi ed into a group of controlled release fertilizers (CRF), while those made from biodegradable environmentally friendly polyvinyl alcohol have been defi ned as slow released fertilizers (SRF).
Źródło:
Polish Journal of Chemical Technology; 2022, 24, 3; 14--18
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship between assimilable-nutrient content and physicochemical properties of topsoil
Autorzy:
Tkaczyk, Przemysław
Bednarek, Wiesław
Dresler, Sławomir
Krzyszczak, Jaromir
Baranowski, Piotr
Sławiński, Cezary
Powiązania:
https://bibliotekanauki.pl/articles/972810.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil nutrients
soil reaction
macroelements
microelements
topsoil
Opis:
In the years 2008-2011, an environmental study was conducted for Polish soils, focusing on the south-eastern Poland soils, as they exhibit significant acidification. This study aimed at assessing the current pHKCl and the supply of basic macro- (P, K, Mg and S-SO4) and microelements (B, Cu, Fe, Mn and Zn) in the collected soil samples, and also at determining their relationship with the soil agronomic category, humus content and pH class. Soil reaction and humus and macronutrient content were positively correlated with the amount of colloidal clay and particles < 0.02 mm. In the majority of cases, the macro-element content in the soil was positively correlated with soil pH and humus content. As for microelements, a usually significant and positive correlation was found between the soil agronomic category and the content of manganese, iron and zinc, whereas for the content of boron and copper, no such relationship was observed. A significant and positive correlation between soil reaction and the content of manganese, iron and boron was also found. Such correlations were not observed in relation to copper and zinc content. Statistical analysis indicated that the content of boron and manganese depended to the greatest extent on the investigated physicochemical properties.
Źródło:
International Agrophysics; 2017, 31, 4; 551-562
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Efficiency of Aquatic Macrophytes on the Nitrogen and Phosphorous Uptake from Pond Effluents in Different Seasons
Autorzy:
Kalengo, Lilian
Ge, Hailong
Liu, Nannan
Wang, Zhijian
Powiązania:
https://bibliotekanauki.pl/articles/1955528.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
biomass
nutrients
phytoremediation
pond effluent
seasonal variation
Opis:
The present study investigated the efficiency of four aquatic macrophytes: Lemna spp, Pistia stratiotes, Ipomoea aquatica and Eichhornia crassipes on nitrogen and phosphorous utilization from aquacultural effluents concerning seasonal changes and biomass production. These nutrients in excess affect fish health and cause eutrophication in water bodies, hence affecting the ecosystem. Aquatic macrophytes were planted in tanks filled with the effluents from carp pond and other tanks were left without plants, serving as control/algal treatment. The water samples were collected weekly for analysis of total nitrogen (TN), ammonia-nitrogen (NH3-N), nitrate-nitrogen (NO3-N), total phosphorus (TP) and ortho-phosphate (ortho-P). The results show that average water temperature raised from 12.2 ± 0.21 °C in winter to 32.0 ± 0.4 °C in summer with no significant difference (p>0.05) between treatments whereas pH was neutral in winter and slightly alkaline in the other seasons. Seasonal changes had impact on macrophytes biomass accumulation with the highest in spring for Lemna spp (91.3%), followed by P. stratiotes (81%) and in summer, E. crassipes (64%). Autumn and winter had the lowest biomass accumulation and I. aquatica had the lowest values in all seasons. For each season, the nutrients concentration decreased with no significant difference (p>0.05) between treatments. Average NH3-N removal efficiencies were higher during summer and autumn followed by spring and lowest in winter for all treatments. NO3-N and TN decreased significantly from the highest in summer to the lowest in winter in all treatments. The ortho-P removal efficiency was slightly higher than TP and decreased from the highest in spring to the lowest in winter (91.4% to 7.8%, control/algae; 90.3% to 8.4%, E. crassipes; 86.2% to 8.3%, Lemna spp; 82.5% to 10.8%, P. stratiotes). The chlorophyll a concentration was higher in Lemna spp (62.2 μg/L) and control/microalgae treatments (59.3 μg/L) indicating that there was probably microbial community that contributed to nutrient utilization. Aquatic macrophytes, in association with microalgae, were responsible for the nitrogen and phosphorous removal. Seasonal temperature change affects the growth and nutrients uptake of aquatic macrophytes. A decrease in temperature reduces the efficiency of nutrients removal and biomass production. For an effective N and P removal from pond effluents in a given season, selection of a proper aquatic macrophyte must be taken into consideration with regards to a given season.
Źródło:
Journal of Ecological Engineering; 2021, 22, 8; 75-85
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioaccumulation of Macro- and Microelements in Herbaceous Plants in the River Valley
Autorzy:
Parzych, A.
Jonczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/124879.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
riparian forest
peatbogs
herbaceous plants
nutrients
accumulation
Opis:
The research was done in the upper course of the Kamienna Creek which is the left-bank tributary of River Słupia situated in the northern part of Poland within Leśny Dwór Forest Inspectorate area. The aim of the study was the comparison of accumulation properties of herbaceous plants in spring niches in relation to macro- and microelements. The shoots of research plant species showed a good supply of macro- and micronutrients. The highest contents of nutrients were found in the shoots of Athyrium filix-femina (Ni), Caltha palustris (Mg, Ca, Sr), Cardamine amara (K, Zn, Fe, Al), Carex rostrata (Mn) and Solanum dulcamara (N, P, Cu), and the lowest in shoots of Ajuga reptans (P, Zn, Mn), Cardamine amara (N, Cu) and Carex rostrata (K, Mg, Ca, Sr, Ni, Fe, Al). Herbaceous plants accumulated from 1767.23 mmol c99%), and microelements ranged from 0.33% in Solanum dulcamara to 0.67% in shoots Cardamine amara. The share of nitrogen was from 38.8% to 56.8% of this amount, phosphorus from 2.9% to 3.9%, potassium from 28.5% to 40.6%, magnesium from 4.8% to 7.6%, and calcium from 4.6% to 16.4%. A large share of iron (from 33.7% Athyrium filix-femina to 39.5% Caltha palustris), manganese (from 9.2% Cardamine amara to 28.8% Carex rostrata) and aluminum (from 16.7% Carex rostrata to 40.8% Cardamine amara) in total measured components indicates excessive downloading them through plants. During the three years of research done in spring niches, it was found that some plant species take up nutrients in the quantities exceeding their physiological demand, which enables to use some of them for forming e.g. artificial wetlands, stopping many impurities and forming protective barriers.
Źródło:
Journal of Ecological Engineering; 2018, 19, 3; 170-177
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The sources of nutrients in waters of rivers in the wetland areas of Narew National Park in north-eastern Poland
Autorzy:
Skorbiłowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/124887.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
rivers
sources of nutrients
factor analysis
Narew
Opis:
The study aimed at the attempt to identify and to evaluate the interaction intensity, and to classify the sources of river waters nutrients in the catchment of upper river Narew within Narew National Park (north-eastern Poland). The studies were carried out on Narew river within borders of Narew National Park, where 5 measurement-control points were localized as well as one near estuaries of its 5 tributaries (Awissa, Czaplinianka, Horodnianka, Turośnianka and Supraśl). Factor analysis (FA) from multi-dimensional group was applied for statistical processing of study results, because it is commonly used to describe and explore a large number of data. concentrations of analyzed chemicals depended on a water sampling point that was under anthropopression and geogenic conditions. Studies and results from analyses (FA and CA) allowed for identifying the main sources of river Narew nutrients within Narew National Park. These are: tributaries of river Narew, point and distributed runoffs, as well as shallow ground waters that transport components having anthropogenic and partially geogenic-lithologic origin. River Turośnianka supplies the largest loads of studied parameters to river Narew within Narew National Park boundaries. River Supraśl is the most contaminated tributary of river Narew.
Źródło:
Journal of Ecological Engineering; 2013, 14, 3; 1-7
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 143

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