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Tytuł:
Application of Spent Ion Exchange Sorbents for the Reclamation of Degraded Soils
Autorzy:
Chomczyńska, Mariola
Wasag, Henryk
Kujawska, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/124227.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
degraded soils
ion exchange sorbents
cation exchange capacity
Opis:
The paper presents the possibility of applying spent synthetic ion exchangers and sorbents based on natural zeolites for the reclamation of degraded soils. The obtained research results confirmed the improvement of the soil sorption capacity (cation exchange capacity) caused by the addition of spent ion exchange sorbents. They also enabled to determine the magnitude of changes of the analyzed parameters depending on the amount of wastes introduced to the soil. The addition of 1% (w/w) spent cation exchanger enables to increase the cation exchange capacity twice, whereas in the case of zeolite, the observed increase reaches about 20%. Simultaneously, introduction of waste ion exchange sorbents increases the content of exchangeable calcium and magnesium while doubling in the content of these macroelements is observed for 5% (w/w) and 2% (w/w) of spent ion exchanger, respectively. In the case of the exchangeable potassium content, a satisfactory increase is observed with 1% (w/w) addition of spent zeolite.
Źródło:
Journal of Ecological Engineering; 2019, 20, 2; 239-244
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ammonium Adsorption Onto a Contaminated Soil-Water Environment Amended with Organic Matter
Autorzy:
Al-Saedi, Rasha
Hammood, Zaman Ageel
Chyad, Tasnim Fahim
Powiązania:
https://bibliotekanauki.pl/articles/1839546.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
ammonium
adsorption
calcareous soil
compost
cation exchange capacity
Opis:
In this research, the ability of calcareous soil to absorb ammonium was investigated and the effect of compost amendment as a natural organic source on ammonium adsorption was also studied. The pH, dissolved ammonium concentrations, ammonium adsorption capacity, and cation exchangeable capacity for the soil samples were analyzed in relation to an untreated control and treatment with compost under ambient temperature and different initial ammonium concentrations (10, 20, 30, 40, 50, 70, and 100 mg/L). The amounts of ammonium adsorbed increased along with initial concentrations of dissolved ammonium for control and treatment with compost. The models evaluated in this study included the Langmuir and Freundlich isotherms. Ammonium adsorption was found to conform to the Freundlich equation isotherm more than that with Langmuir. The highest adsorption capacity was exhibited by 100 mg/L added initial ammonium concentration. Adding compost as a source of organic matter enhanced the adsorption capacity of calcareous soil with an increase in the adsorption of 36%, which indicated that the organic matter is a key limiting parameter in the mechanism of ammonium adsorption. Ammonium adsorption by calcareous soils is an important process in identifying the ammonium nitrogen route in soil-water systems.
Źródło:
Journal of Ecological Engineering; 2021, 22, 1; 188-194
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mineralogical characteristics of the heterolithic formations from the Carpathian Foredeep Miocene sediments, south-eastern Poland
Autorzy:
Przelaskowska, Anna
Zagórska, Urszula
Urbaniec, Andrzej
Łykowska, Grażyna
Klaja, Jolanta
Grela, Jacek
Kędracka, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2172901.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Carpathian Foredeep
heteroliths
lithotypes
mineralogical composition
cation exchange capacity (CEC)
Opis:
Heterolithic complexes from the Carpathian Foredeep are a subject of growing attention as many natural gas accumulations of industrial importance have been discovered in such formations during the last decades. The aim of the presented work was to determine lithotypes of different lithology and mineralogical composition in the heterolithic sequences. Individual lithotypes were distinguished of macroscopic observations of cores, X-ray diffraction analysis (XRD) and X-ray fluorescence method (XRF). Preliminary distinction between the lithotypes was based on macroscopic observations of the core samples. Correlation plots between the contents of particular minerals (XRD analyses) and corresponding elements (XRF analyses) were used for verification of the lithotypes distinguished based on macroscopic observations. Swelling properties of the investigated rocks were determined using the cation exchange capacity (CEC) values. The following lithotypes were identified: medium- to fine-grained sandstones, fine- to very fine-grained sandstones, clayey sandstones, sand-dominated heteroliths, heteroliths with approx. equal proportions of sandstones and mudstones, mud-dominated heteroliths, mudstones, clayey shales. Such division provides a basis for precise petrophysical characterization of the analyzed profiles, that is assignment of particular petrophysical parameters values to individual lithotypes. More reliable petrophysical parameters in the geophysical interpretation of heterolithic sequences allow for a more precise determination of zones characterized by good reservoir parameters.
Źródło:
Geology, Geophysics and Environment; 2022, 48, 3; 219--242
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the Quality of Clay Powders by Mechanoactivation
Autorzy:
Bogoslavets, Volodymyr
Voloshyn, Yurii
Hrytsulyak, Halyna
Yurych, Lidiia
Powiązania:
https://bibliotekanauki.pl/articles/2202297.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
clay
bentonite
swelling index
cation exchange capacity
drilling fluid
rheology
Opis:
The ability to effectively use mineral resources is the key to the sustainable development of industry in modern conditions of environmental protection. High-quality bentonites are rarely found in nature, so technologies for improving the quality of clay powders are quite relevant today. The article considers the possibility of improving the quality of clays obtained from candidate quarries for the purpose of further use as components of drilling fluids. The filtration and rheological characteristics of drilling fluids obtained on the basis of activated clay powder were also investigated by Benta Limited Liability Company.
Źródło:
Journal of Ecological Engineering; 2022, 23, 12; 145--154
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Different Doses of N Fertilization on the Parameters of Soil Organic Matter and Soil Sorption Complex
Autorzy:
Šimanský, V.
Kováčik, P.
Jonczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/124019.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
nitrogen
fertilization
Luvisol
soil organic matter
hydrolytic acidity
cation exchange capacity
Opis:
Mineral N fertilizer application may have an effect on soil organic matter and other soil parameters. Therefore, we studied the effects of different doses of N fertilization on soil organic matter and chemical properties of Haplic Luvisol in the locality of Dolná Malanta (Slovakia) during 2014–2016. Soil samples were collected from the plots exposed to the following treatments: 1. N0 – no N fertilization as control during 2014–2016, 2. N40 – N fertilizer at the rate of 40 kg N ha–1 in 2014 and 2016, 3. N80 – N fertilizer at the rate of 80 kg N ha–1 in 2014 and 2016, 4. N160 – N fertilizer at the rate of 160 kg N ha–1 in 2015, and 5. N240 – N fertilizer at the rate of 240 kg N ha–1 in 2015. The results showed that in N80 the soil organic carbon (SOC) content increased by 32% in comparison to N0. The addition of 80 kg ha-1 of N significantly decreased the humic substances (HS) content in the soil by 16% compared to N0. The higher doses of N fertilization 80 rather than 40 kg ha-1 as well as 240 rather than 160 kg ha-1 significantly decreased humus stability. The addition of N fertilization decreased the average values of soil pH. Values of hydrolytic acidity (Ha) increased by 41% and 46% in N40 and N80, respectively than N0, but on the other hand, this one decreased by 36% and 27% in N160 and N240, respectively in comparison to N0. Positive statistically significant correlations were determined between soil pH and SOC in N40 and N80 treatments. The increase of soil pH was connected with higher humus quality in N160 and N240. Negative correlations between humic acids (HA) and sum of basic cations (SBC) and cation exchange capacity (CEC) were observed in N80 < N160 < N240 treatments. Higher values of fulvic acids corresponded with lesser CEC in N80 and N160 treatments. In N160, with increased humus quality, CEC significantly decreased. The same effect was observed in N240. In addition, in N240, we also observed that with increased HA:FA ratio SBC and base saturation significantly decreased.
Źródło:
Journal of Ecological Engineering; 2017, 18, 3; 104-111
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of cation-exchange capacity (cec) of fenpeats in vertical profiles from eastern and central poland in relation to function of peat lands as natural geological barriers
Autorzy:
Rydelek, Paweł
Bąkowska, Anna
Zawrzykraj, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2025307.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
natural geological barrier
peat
fen
cation-exchange capacity
Nauki o Ziemi
Opis:
An anal y sis of cat ion-ex change ca pac ity (CEC) vari abil ity of peats is pre sented in ver ti cal pro files from east ern and cen tral Po land. CEC val ues were com pared with ash con tent (Ac), pH and CaCO3 con tent. Eight peatlands were selected for re search in the fol low ing ar eas: War saw Pla teau (2 ob jects), Siedlce Pla teau (2 ob jects), Lubartów Pla teau (2 ob jects), Na³êczów Ta ble land (1 ob ject) and Dobrohusk De pres sion (1 ob ject). The peatlands rep re sented a fen peat type of sim i lar bo tanic com po si tions of sed i ments, but they dif fered in the area, peat thick ness and drain age con ditions. Char ac ter is tic reg u lar i ties in CEC vari abil ity were noted in the peatlands and there were three types of CEC vari abil ity in ver ti cal pro files. Car bon ate peats (types 1 and 2) had the high est pH and def i nitely the high est val ues of CEC. In ver ti cal pro files, there was also a zonation, but the reg u lar i ties sim i lar to non-car bon ate peats were not observed. Dif fer ent dis tri bu tion of phys i cal and chem i cal pa ram e ters were es tab lished in ver ti cal pro files in partly drained peatlands (with a muck layer on top) with non-car bon ate peats (type 3) and there were three dis tinct zones in ver tical pro files, with dif fer ent Ac and CEC. De ter mi na tion of the ver ti cal CEC vari abil ity and other phys i cal and chem i calpa ram e ters in peatlands made it pos si ble to dis tin guish zones with po ten tially most ben e fi cial iso la tion con di tions.
Źródło:
Studia Quaternaria; 2016, 33; 111-116
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zeolitic adsorbent synthesized from powdered waste porcelain, and its capacity for heavy metal removal
Autorzy:
Wajima, T.
Ikegami, Y.
Powiązania:
https://bibliotekanauki.pl/articles/346935.pdf
Data publikacji:
2006
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
zeolite synthesis
waste porcelain
heavy metal removal
cation exchange capacity
neutralization
Opis:
A zeolitic adsorbent was synthesized from powdered waste porcelain kept at 80 °C for 24 h. The product contained the zeolite phases Na-P1 and hydroxysodalite. The product with the highest cation exchange capacity (CEC) was synthesized using 4 M NaOH and the sample weight / volume of alkali solution ratio was 1/4. The highest CEC obtained for the product was almost 1900 mmol/kg, which is the same as that of natural zeolite. The product with the highest CEC was tested for its ability to remove heavy metals (Fe, Cu, Ni, Zn, Pb, Cd, Mn, Cr, Al, B, Mo) from an acidic solution (pH 2). The product can neutralize the acidic solution to almost pH 7, and the capacity of the product for the removal of heavy metals is higher than that of the natural zeolite, except for Mo and B.
Źródło:
Ars Separatoria Acta; 2006, 4; 86-95
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative analysis of physical and chemical attribute of soil around power-line dumpsite at Boji-Boji Owa, Delta State, Nigeria
Autorzy:
Ulakpa, Ruth Oghenerukevwe Eyankware
Ulakpa, Wisdom Chukwuemeke
Eyankware, Moses Oghenenyoreme
Powiązania:
https://bibliotekanauki.pl/articles/1031480.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Boji-Boji Owa
Cation exchange capacity
Delta State
Exchangeable cation
Nigeria
Solid waste
dumpsite
Opis:
The study ascertains some physiochemical properties of soils around Power-line dumpsite at Boji-Boji Owa, Delta State, Nigeria. In order to evaluate the effects of municipal solid waste dumpsites on soils, soil samples were collected with the aid of a graduated soil auger at depths of 0 – 10 cm, 15 – 25 cm and 25 – 40 cm, representing top to sub and bottom soil sand also 500 m away from dumpsites which serves as control site (R). Samples were taken for laboratory analyses to determine the level of physiochemical properties such as: pH, grain size distribution, Electrical Conductivity (Ec), Organic Carbon (OC), Organic Matter (OM), Available Phosphorous (Av. P), Overall Nitrogen (ON), Basic Cations and Cation Exchange Capacity (CEC) in soils. Results obtained from the study, revealed that values between waste dumpsite and control site were significantly different. Findings showed that the pH value in sampled soils from studied dumpsites ranged from 6.22±0.06 and 7.97±0.04 while the mean pH value for controlled site was 39.8±0.08. The increase in the pH value of the sampled soil indicated an increase in CEC mean value of soil which ranged from 4.73±0.30 and 10.28±0.46 mEq/100 g while a low pH indicated low CEC mean value of 1.50±0.22 mEq/100 g. This is because there exists a positively significant relationship between pH, OC, OM, Av.P, ON, basic cations and CEC. As Ec varied between 692±4.50 to 918±4.03 μScm-1, OC varied between 0.05±0.00 to 0.64±0.03%, OM varied between 0.10±0.06 to 0.57±0.07%, Av.P varied between 8.98±0.06 to 25.36±0.22 mg/kg and ON varied between 0.44±0.01 to 0.93±0.03% across all studied dumpsites.
Źródło:
World News of Natural Sciences; 2021, 35; 118-134
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sezonowość zmian składu kompleksu wymiennego kationów i jego wpływ na wyniki modelowania odwrotnego
Seasonality changes in the composition of the exchangeable cations of the complex and its impact on the results of the inverse modelling
Autorzy:
Jóźwiak, K.
Solovey, T.
Powiązania:
https://bibliotekanauki.pl/articles/2062052.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
modelowanie geochemiczne
wymiana jonowa
pojemność wymiany jonowej
geochemical modelling
ion exchange
cation exchange capacity
Opis:
Wymiana jonowa jest zaliczana do podstawowych procesów kształtujących skład chemiczny wód podziemnych. W praktyce ilościowym jej wymiarem jest pojemność wymiany kationów (PWK), która może służyć jako podstawa do obliczania liczby miejsc jonowymiennych przy modelowaniu odwrotnym. W pracy zaprezentowano wyniki oznaczeń kompleksu wymiennego kationów na obszarze pojedynczej wydmy w Kampinoskim Parku Narodowym. Wyniki oznaczeń posłużyły jako podstawa do wykonania modeli odwrotnych w obrębie strefy aeracji i wpływu na te modele oznaczonych statystycznie i empirycznie wartości PWK.
Ion exchange is considered to be a fundamental process that form the chemical composition of groundwater. In practice, its quantitative aspect is the cation exchange capacity (PWK), which can be used as a basis for calculating the amount of ion exchange sites for reverse modeling. The results of the cation exchange complex determination in a single dune located in the Kampinos National Park were presented in this paper. These results were used as a basis for the implementation of the inverse models within the vadose zone as well as assessment of the impact of statistically and empirically evaluated values of the cation exchange capacity on these models.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2013, 456 Hydrogeologia z. 14/1; 243--248
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the sorption properties of different soils using water vapour adsorption and potentiometric titration methods
Autorzy:
Skic, K.
Boguta, P.
Sokolowska, Z.
Powiązania:
https://bibliotekanauki.pl/articles/25797.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
sorption property
soil
water vapour adsorption
potentiometric titration
cation exchange capacity
surface area
physicochemical characteristics
Źródło:
International Agrophysics; 2016, 30, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
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