Characterization of salt- and surfactant-containing sandy soil extracts by laser light methods

Joó, Szilvia; Tóth, Judit; Földényi, Rita

doi:10.1515/intag-2015-0034

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…The soil properties were measured on samples collected in five replications from experimental fields in disturbed and undisturbed state (in soil cores, h = 5 cm, dia = 5 cm) from surface and subsurface layers, ie 0-5 and 10-15 cm for the arctic soils (below 15 cm -a permafrost) and 0-10 and 20-30 cm for the Polish soils (below 30 cm -mother rock). The grain size distribution was determined by the standard sieve method (particles bigger than 2 mm) and the primary grain size distribution using the laser diffraction method (particles less than 2 mm) (Joó et al, 2015;Ryżak and Bieganowski, 2013). In this paper, the grain size distribution was presented in two ways as total grain size distribution (skeleton and primary grains = 100%, Table 1) and primary grain size distribution (primary grains = 100%, Fig.…”

Section: Methodsmentioning

confidence: 99%

Hydrophysical characteristics of selected soils from arctic and temperate zones

Witkowska-Walczak¹,

Bartmiński²,

Sławiński³

2015

International Agrophysics

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A b s t r a c t. Hydrophysical characteristics of arctic and temperate zones soils were determined. The soils from the temperate zone showed a greater capability of water retention than those from the arctic zone. In both investigated depths (surface and subsurface layers), the highest water content was observed for the Sądecki Regosol, and the lowest one for Turbic Cryosol formed in the cell forms from Spitsbergen at all soil water potentials. The differences between water content for these soils at the same soil water potentials varied between 20 and 25% vol. in the surface layer, and from 19 to 22% vol. in the subsurface, respectively. The lowest differences (2.7-5.0% vol.) in water content were noticed between the Wyspowy Regosol and Turbic Cryosol (Skeletic) derived in the sorted circles. In both depths, higher values of water conductivity were observed for Regosols than for Cryosols at high soil water potentials, from -0.1 till -7 kJ m -3 . These differences were especially high at -0.1 kJ m -3 and they were three or four times higher for soils from the temperate zone than from the arctic ones. For lower water potentials, the differences in water conductivity do not exceed one order in the surface layer and two orders in the subsurface.K e y w o r d s: arctic zone, temperate zone, soils, water properties

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Section: Methodsmentioning

confidence: 99%

Hydrophysical characteristics of selected soils from arctic and temperate zones

Witkowska-Walczak¹,

Bartmiński²,

Sławiński³

2015

International Agrophysics

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“…MCCAVE et al, 1986;CHAPPELL, 1998;BITTELLI et al, 1999;BIEGANOWSKI et al, 2010;RYŻAK & BIEGANOWSKI, 2011;MAKÓ et al, 2014;LAMORSKI et al, 2014;JOÓ et al, 2015;THOMAS & REDSTEER, 2016). Ezek közül is legtöbbször a Mastersizer 2000 rendszereket alkalmazták.…”

Section: Táblázatunclassified

Talajminták lézeres szemcseanalízisének módszertani tapasztalatai

Makó¹,

Varga²,

Hernádi³

et al. 2017

Agrokem

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A talajok mechanikai összetételének vizsgálataA talaj szilárd fázisa általában különböző méretű és alakú szerkezeti elemekből (aggregátumokból) áll. A szerkezeti elemeket ugyancsak változatos méretű és formájú, a talajképző kőzettől "átörökölt" vagy a talajképződés során helyben képző-dött ásványszemcsék, más néven elemi részecskék építik fel. Az elemi részecskéket az aggregátumokban élő és elhalt szerves anyagok és egyéb kolloid méretű ragasztóanyagok tartják össze. Az elemi részecskék méret szerinti százalékos megoszlását nevezzük a talajok mechanikai összetételének (a továbbiakban MÖ). A talajok MÖ vizsgálati eredményei széles körben felhasználhatóak. A talajosztályozási, vagy a geomorfológiai kutatások (üledék-képződési és hordalékszállítási folyamatok ér-telmezése) során sokszor elengedhetetlen az egyes genetikai szintekben, illetve rétegekben a MÖ ismerete (pl. TÓTH et al., 2009;KURÁŽ et al., 2012). A szilárd fázist alkotó elemi részecskék mérete a talajok több tulajdonságát befolyásolja; elsősorban meghatározza a talajok fajlagos felületét, és ezen keresztül a határfelüle-teken lejátszódó legfontosabb talajfizikai és -kémiai jelenségeket (pl. kapillaritás, ion-és molekula-adszorpció). A MÖ hatással van a talajok pórusméret-eloszlására, víztartó-és vízvezető-képességére (WÖSTEN et al., 2001;HAJNOS et al., 2006;TÓTH et al., 2015), a nem vizes fázisú folyadékokra (Nonaqueous Phase Liquids: NAPLs) vonatkozó folyadéktartó és folyadékvezető képességére (BUDHU et al., 1991;WEAVER et al., 1994). Befolyásolja továbbá a talajok légáteresztő képeségét (HAMAMOTO et al., 2009), hővezető képességét (USOWICZ et al., 2008, reológiai tulajdonságait (CZIBULYA et al., 2010;SHEIN et al., 2011) és szorpciós tulajdonsá-gaikat (TOMBÁCZ, 2002;ERTLI et al., 2004). A talajok mikrobiális aktivitása (BRZEZIÑSKA et al., 2012) vagy a talajok szerkezetessége (BALASHOV et al., 2010) szintén függ a MÖ-től. A MÖ adatokból számíthatók egyéb talajjellemzők, mint pl. a talajok fraktáldimenziója is (BIEGANOWSKI et al., 2013).

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“…BTEAC is a well-known phase-transfer catalyst, which is widely used in heterogeneous chemical reactions, especially in the area of organic chemistry (Entezari and Shameli 2000). DIPNS has a hydrotropic and surfactant nature, thus it is used as a forming agent, particularly in the case of formulations of pesticides (Burns and Duliba 2000;Joó et al 2015). Considering the frequent utilization of these two surfactants, they have potential risks of becoming environmental pollutants, when they get into the soil or natural waters.…”

Section: Introductionmentioning

confidence: 99%

Sorption of potential ionic pollutants on oil shale and its non-series composite sorbents

Molnár

Földényi

Horváth

2020

Int. J. Environ. Sci. Technol.

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Huge amounts of anthropogenic environmental pollutants appearing in nature mean an emerging problem. Oil shale is a convenient candidate, wherewith these contaminations can be removed from our natural environment, taking into account its sorption ability and low price. However, oil shale has a crumbling nature, which restricts its facile usage. Hence, oil shale was transformed into more handleable forms, using binding materials. Two oil shale composite forms were prepared by applying sodium alginate and agar. A cationic and an anionic chemicals, benzyltriethylammonium chloride and sodium 2,3-diisopropylnaphthalene-1-sulfonate, respectively, were used as model pollutants, and their sorptions on these newly prepared composites were studied. Sorption properties of oil shale powder and oil shale composites were compared. In the composite materials, oil shale properly sorbed the model pollutants (the binding material did not cover the sorption sites); furthermore, oil shale composites had significantly higher removal efficiency compared to that of the oil shale powder: 208 ± 15.6 (oil shale–agar) and 171 ± 22.8 (oil shale–alginate) vs 140 ± 11.1 µmol/g for the cationic compound; 151 ± 1.6 (oil shale–agar) and 165 ± 7.6 (oil shale–alginate) vs 81.5 ± 2.6 µmol/g for the anionic compound. Results of diffusion models for the two composites show that the opposite charges of the solutes largely influence the rate of their diffusion, owing to the interaction between the solute and the composite material. These results indicate that oil shale and its composites are applicable candidates as sorbents, from which the most effective one can be chosen by considering the chemical properties of the actual pollutant to be removed.

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Characterization of salt- and surfactant-containing sandy soil extracts by laser light methods

Cited by 5 publications

References 16 publications

Hydrophysical characteristics of selected soils from arctic and temperate zones

Hydrophysical characteristics of selected soils from arctic and temperate zones

Talajminták lézeres szemcseanalízisének módszertani tapasztalatai

Sorption of potential ionic pollutants on oil shale and its non-series composite sorbents

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