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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Long-lasting effects of bentonite on properties of a sandy soil deprived of the humus layer

100%
Czaban J., Czyz E., Siebielec G., Niedzwiecki J.
International Agrophysics
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2014
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tom 28
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nr 3
Bentonite has been recognized as a very good material for the improvement of coarse textured soils. In microplot experiment, of a sandy soil deprived of the humus layer was enriched in 1973 with waste bentonite at the rates of 0, 3, 6 and 12 kg m -2 . Until 2002, the microplots were planted with different crops and regularly enriched with mineral a nd organic fertili zers. Since 2003, the microplots were left barren. In 2009, determinations of several features of the soils (in 5-30, 30-55 and 55-80 cm layers) showed that the historical amendment of the sandy soil with bentonite (especially its highest dose) ensured significantly higher contents of water, organic C, clay, silt and a sand fraction with particle diameter <0.1 mm in 5-30 cm layer. Proportions of non-dispersible clay in the total clay of bentonite soils in the two upper soil layers were significantly lower than those of the control soil. A significant increase in the penetrometer resistance was observed in 40-58 cm layers of the control soil and the soil with 3 kg m -2 bentonite amendment, contrary to the soils with two highest bentonite doses.
2
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Decontamination properties of bentonite in rats irradiated and contaminated with radiocaesium

100%
Kossakowski S., Dziura A.
Bulletin of the Veterinary Institute in Puławy
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1994
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tom 38
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nr 1
3

Influence of bentonite on trace element kinetics in rats. II. Calcium

100%
Grosicki A., Kowalski B., Bik D.
Bulletin of the Veterinary Institute in Puławy
|
2004
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tom 48
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nr 3
4

Effect of bentonite on supplemental zinc uptake and distribution in rats

84%
Grosicki A., Rachubik J.
Bulletin of the Veterinary Institute in Puławy
|
2010
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tom 54
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nr 4
Rats were offered ad libitum zinc in twice the level of the standard diet (23 mg/kg diet), and bentonite (2% additive) for 28 d, together with traces of zinc chloride (labelled with zinc-65) given intragastrically. Results provided evidence that bentonite increased the body retention of zinc in comparison to the diet without this agent. Furthermore, the addition of bentonite did not influence feed intake, organ to body ratios, and haematological values, although a visible decrease in body weight gains following bentonite feeding was noted. These findings may be useful when bentonite fertilised diet is provided to animals pastured in areas with higher zinc levels.
5

Adsorption of disperse of yellow 42 onto bentonite and organo-modified bentonite by tetra butyl ammonium iodide (B-TBAI)

84%
Hashemian S., Sadeghi B., Mozafari F., Salehifar H., Salari K.
Polish Journal of Environmental Studies
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2013
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tom 22
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nr 5
The kinetics and thermodynamics of adsorption of disperse yellow (DY42) by bentonite and organomodified-bentonite was studied. The organo-modified bentonite was synthesized by bentonite and tetra butyl ammonium iodide (B/TBAI). The B/TBAI was characterized by FT-IR, XRD, SEM, and elemental analysis. The adsorption experiments were carried out to investigate the factors that influence dye uptake by the adsorbents, such as the contact time under agitation, adsorbent dosage, initial dye concentration, and pH. The experimental results show that the percentage of dye removal increases with the increasing the amount of sorbent. Adsorption was pH-dependent. The equilibrium data were fitted to Langmuir and Freundlich isotherms and the equilibrium adsorption was best described by the Langmuir isotherm model. The experimental data fitted very well with the pseudo-first-order kinetic model. The thermodynamic study of the adsorption process showed that the adsorption of DY42 onto B-TBAI adsorbent was carried out spontaneously and the process was endothermic in nature.
6
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Evaluation of natural minerals (zeolite and bentonite) for nitrogen compounds adsorption in different water temperatures suitable for aquaculture

84%
Sahin D., Oz M., Sertasi E., Oz U., Karsli Z., Aral O.
International Letters of Natural Sciences
|
2018
|
tom 71
In this study, it was aimed to determine the effects of zeolite and bentonite on the ammonium adsorption at different temperatures. In this research three trial groups with 3 repetitions were created for three different water temperatures (18±0.1°C, 24±0.0°C, 27±0.0°C). Experimental groups were prepared by adding NH4 + amount of 10.5 mg/l in 2 liters of water. After that, zeolite, zeolite+bentonite and bentonite were added into the bottles as 10 gram per liter. Water temperature, pH and TAN (Total Ammonium Nitrogen) values were determined during the trial period. At the end of trial TAN values at 27 °C were recorded as 10.103±0.11 mg/l, 9.227±0.13 mg/l and 7.933±0.17 mg/l in zeolite, zeolite+bentonite and bentonite groups, respectively. At the end of trial TAN values at 24 °C were recorded as 10.027±0.17 mg/l, 9.282±0.15 mg/l and 8.336±0.15 mg/l in zeolite, zeolite+bentonite and bentonite groups, respectively. At the end of trial TAN values at 18 °C were recorded as 9.012±0.28 mg/l, 7.702±0.14 mg/l and 6.594±0.14 mg/l in zeolite, zeolite+bentonite and bentonite groups, respectively. Maximum ammonium removal capacity, qe, was found to be 0.50 mg/g in the bentonite (18 °C). The TAN values determined at 18 °C were statistically more significant (p<0.05) than the TAN values obtained at 24 °C and 27 °C.
7

Effects of aflatoxin and sodium bentonite administered in feed alone or combined on lipid peroxidation in the liver and kidneys of broilers

84%
Eraslan G., Akdogan M., Yarsan E., Essiz D., Sahindokuyucu F., Hismiogullari S. E., Altintas L.
Bulletin of the Veterinary Institute in Puławy
|
2004
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tom 48
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nr 3
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Decontamination effectiveness of bentonite in the sheep and pigs contaminated with a single dose of radiocaesium

84%
Kossakowski S., Dziura A.
Bulletin of the Veterinary Institute in Puławy
|
1994
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tom 38
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nr 2
9
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effectiveness assessment of oral administration of bentonite or alginate in reducing the transfer of radiostrontium to tissues and organs of rats

84%
Rachubik J.
Bulletin of the Veterinary Institute in Puławy
|
2000
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tom 44
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nr 2
Decontamination efficiency of bentonite from Polish geological deposits and alginate in reducing the radiostrontium transfer to tissues and organs of rats was examined. The ⁹⁰Sr activity concentration in bones of the rats after the bentonite treatment was similar to that of the control animals. In contrast, in bones of the alginate treated rats the radioactivity was markedly higher than that of the control group. In soft tissues and organs the higher decontamination efficiency was found for alginate (up to 97.1 % ). However, bentonite from Polish geological deposits was also fairly efficient in reducing the radiostrontium transfer to rat organisms. Moreover, this decontamination agent is frequently administered and effective in cases of radiocaesium contamination. lt seems that bentonite could be an effective agent used in the case of the environmental radioactive pollution, when radionuclides of strontium and caesium are released simultaneously.
10

Influence of bentonite on trace element kinetics in rats. III. Selenium

84%
Grosicki A., Rachubik J.
Bulletin of the Veterinary Institute in Puławy
|
2005
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tom 49
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nr 1
11
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Decontamination effectiveness of bentonite in pigs and sheep repeatedly contaminated with radiocaesium

84%
Kossakowski S., Dziura A., Zuk M. M.
Bulletin of the Veterinary Institute in Puławy
|
1995
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tom 39
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nr 1
12
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Content available

Possibilities of reducing radiocaesium transfer to hen eggs. II. Using bentonite from Polish geological deposits

84%
Rachubik J., Kowalski B.
Bulletin of the Veterinary Institute in Puławy
|
2000
|
tom 44
|
nr 2
The decontamination effectiveness of bentonite from Polish geological deposits in reducing the radiocaesium transfer to hen eggs was examined. The egg white radiocaesium concentration was higher than that in egg yolk. The highest decontamination efficacy in all egg components was noticed in animals treated with bentonite from the first day of radionuclide administration. Generally, the radioactivity concentration in hens treated simultaneously with ¹³⁷CsCI and a caesium binder were lower by >50% than those in the controls. The decontamination efficiency lowered with the delayed bentonite treatment. In Poland bentonite seems to be an alternative to other decontamination agents.
13
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Content available

Effect of compost, bentonite and calcium oxide on content of some macroelements in plants from soil contaminated by petrol and diesel oil

67%
Wyszkowski M., Ziolkowska A.
Journal of Elementology
|
2009
|
tom 14
|
nr 2
405-418
The aim of the study was to determine how soil contamination with petrol and diesel oil affected content of some macroelements in spring oilseed rape (Brassica napus var. oleifera) and oat (Avena sativa L.) and to determine whether application of compost, bentonite or calcium oxide could reduce the impact of petroleum-derived products on the properties of the plants. The soil formed from sandy loam was polluted with the following amounts of petrol and diesel oil: 2.5, 5.0 and 10 cm3⋅kg-1 of soil. The results of the tests showed that contamination of soil with diesel oil at the amount between 2.5 and 10 cm3⋅kg-1 of soil disturbed the plants’ chemical composition. Irrespective of the application of compost, bentonite or calcium oxide, the highest doses of petrol and especially diesel oil decreased the content of most macroelements in spring oilseed rape and, to a smaller degree, in oat. Enrichment of soil with compost, bentonite or calcium oxide modified the content of macroelements in plants, mainly that of sodium under the effect of bentonite. Significant correlations, mainly between the content of some macroelements in spring oilseed rape and oats versus plant yield and content of other elements in plants, as well as some properties of soil were observed.
14

Laboratory tests of bentonite stabilization of bottom sediments from a dam reservoir in relation to their usage in municipal solid waste landfill liners

67%
Kos K., Zawisza E.
Acta Scientiarum Polonorum. Formatio Circumiectus
|
2016
|
tom 15
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nr 3
15
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Content available

Badania laboratoryjne dyspersyjności i pęcznienia wybranych bentonitów stosowanych jako bariery izolacyjne obiektów budowlanych

67%
Sieczka A.
Acta Scientiarum Polonorum. Architectura
|
2015
|
tom 14
|
nr 4
W artykule przedstawiono wyniki badań i analizę właściwości wybranych bentonitów stosowanych jako bariery izolacyjne obiektów budowlanych, w szczególności podłoża składowisk odpadów. Do badań wykorzystano trzy rodzaje bentonitów, dla których w warunkach laboratoryjnych dokonano oceny dyspersyjności oraz zdolności pęcznienia. Dyspersyjność określono metodami: „bryłkową" i „podwójnej analizy hydrometrycznej". Wskaźniki pęcznienia wyznaczano metodą Holtza-Gibbsa i ASTM D 5890-95. Zbadano również wpływ stężenia ciekłych zanieczyszczeń (chlorków o stężeniu: 1000, 2500, 5000 i 10 000 mgdm-3) na pęcznienie bentonitu. Uzyskane wyniki porównano z wartościami liczbowymi wymaganymi dla typowych materiałów bentonitowych stosowanych jako bariery izolacyjne obiektów budowlanych.
16
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Ocena przydatnosci bentonitu w zmniejszeniu toksycznego dzialania kadmu w stosunku do wybranych enzymow glebowych

67%
Nowak J., Klodka D., Szymczak J., Cieszynska M.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2006
|
tom 515
309-315
Doświadczenia przeprowadzono w warunkach laboratoryjnych na próbkach gleby o składzie granulometrycznym gliny lekkiej pylastej, do których dodano wodne roztwory siarczanu(VI) kadmu(II) w ilościach 0,05; 0,50 i 5,00 mmol·kg⁻¹ oraz bentonit w ilości 1, 5 i 10%. W tak przygotowanych próbkach gleb dokonano pomiaru aktywności dehydrogenaz, ureazy, fosfatazy kwaśnej i zasadowej. Wyniki przeprowadzonych badań wskazują, że zanieczyszczenie gleby siarczanem(VI) kadmu(II) spowodowało inhibicję aktywności wszystkich badanych enzymów glebowych. Stopień inhibicji uzależniony był od stężenia metalu w glebie. Zastosowanie bentonitu do gleby zanieczyszczonej solą kadmu w I stężeniu (0,05 mmol·kg⁻¹) spowodowało zmniejszenie stopnia inhibicji aktywności dehydrogenaz (przy każdej stosowanej dawce bentonitu) oraz zmniejszenie stopnia inhibicji ureazy (przy dawce 5 i 10% bentonitu). W przypadku zastosowania materiału sortującego do gleby zawierającej sól kadmu w stężeniu 5,00 mmol·kg⁻¹ zaobserwowano zmniejszenie toksycznego oddziaływania kadmu na aktywność dehydrogenaz, fosfatazy kwaśnej i zasadowej (przy wszystkich dawkach bentonitu) i na aktywność ureazy (przy dawce 5% bentonitu).
17
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Content available

The influence of bentonites modified with quaternary ammonium salts on biocidal properties of compositions of water-dilutable paints and lacquers, and mineral plasters

67%
Oleksy M., Heneczkowski M., Galina H., Lecka-Szlachta K.
Drewno. Prace Naukowe. Doniesienia. Komunikaty
|
2010
|
tom 53
|
nr 184
The research led to the obtainment of compositions of water-dilutable paints and lacquers as well as mineral plaster with the additive of nanofiller called Nanobent ® (bentonite modified with quaternary ammonium salt) which is a commercial product of ZGM Zębiec near Starachowice. The resistance of the abovementioned substances to mould fungi Aspergillus niger and Penicillium chrysogenum was tested. The best results were obtained for the composition with 3% additive of Nanobent ZR2 filler which practically completely inhibited the growth of mould fungi, even in the presence of whole culture medium containing glucose.
18
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Content available

Effect of neutralizing substances on zinc-contaminated soil on the yield and macronutrient content in yellow lupine (Lupinus luteus L.)

67%
Wyszkowski M., Modrzewska B.
Journal of Elementology
|
2015
|
tom 20
|
nr 2
Some trace elements, for example zinc, play both a positive and a negative role in plant life, which requires their content in soil. If soil is excessively contaminated with zinc, an attempt should be made to reduce the negative effect of this element on plants and other living organisms. For this reason, a study was undertaken to determine whether it was possible to alleviate the effect of soil zinc contamination (0, 150, 300 and 600 mg Zn kg-1 of soil) on the yield and macronutrient content of yellow lupine (Lupinus luteus L.). Compost (3%), bentonite (2%) and zeolite (2% relative to soil mass) were used to reduce the effect of soil zinc contamination. Macro- and micronutrients were applied to the soil in the same amounts in all pots: 30 mg N, 30 mg P, 100 mg K, 50 mg Mg, 0.33 mg B, 5 mg Mn and 5 mg Mo per kg soil. Yellow lupine was harvested in the flowering phase and plant material samples were collected for laboratory tests. The induced soil zinc contamination reduced yellow lupine growth and development because a dose of 300 mg Zn kg-1 soil caused plant seedlings to wither. Compost and bentonite reduced the negative influence of soil zinc contamination on yellow lupine yield, especially on aerial parts. The most demonstrable effect of zinc on the macronutrient content of lupine plants was recorded for magnesium and calcium, whose content increased compared to the control in both the aerial parts and roots of yellow lupine. Among the neutralizing substances, the effect of zeolite on the phosphorus, magnesium and calcium content and bentonite on the sodium content in the plants was the most beneficial.
19

Influence of bentonite on trace element absorption

67%
Grosicki A.
Pasze Przemysłowe
|
2011
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tom 20
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nr 2
20

Influence of bentonite on trace element kinetics in rats. 1. Iron

67%
Grosicki A., Kowalski B.
Bulletin of the Veterinary Institute in Puławy
|
2003
|
tom 47
|
nr 2
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