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  1. 6 Physicochemical Problems of Mineral Processing
  2. 2 Gospodarka Surowcami Mineralnymi
  3. 2 Journal of Ecological Engineering
  4. 2 Mineral Resources Management
  5. 2 Przemysł Chemiczny
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  1. 3 Papciak D.
  2. 2 Koyuncu M.
  3. 2 Puszkarewicz A.
  4. 2 Zamorska J.
  5. 2 Śliwa T.
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  1. 4 2022
  2. 1 2021
  3. 2 2019
  4. 2 2017
  5. 1 2016
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1
Content available Pore structure and surface properties of diatomite with mechanical grinding and its influence on humidity control
Hu Zhibo, Zheng Shuilin, Li Jinyu, Zhang Shuaiqian, Liu Min, Wang Zhicheng, Li Jiaxin, Sun Hongjuan
Physicochemical Problems of Mineral Processing
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2022
|
Vol. 58, iss. 6
art. no. 153509
EN
Mechanical grinding (MG) is an effective method to regulate the pore structure and surface properties of mineral material. Grinding diatomite samples were prepared by horizontal sander under different grinding time. The pore structure and surface properties of grinding samples were characterized systematically by the particle size analysis, low temperature nitrogen adsorption, MIP, fractal theory, XRD, SEM, TEM, FTIR and surface hydroxyl density analysis. The humidity control performance (HCP) of grinding diatomite was tested under different temperature and relative humidity. The relationship among pore structure, surface properties and HCP was analyzed. The results show that macroporous is more easily damaged by mechanical force than mesoporous, and the internal blind holes structure can be opened. The HCP of diatomite is positively correlated with the specific surface area, mesoporous volume, the inhomogeneity of macroporous structure and the number of hydroxyl groups, while negatively correlated with the proportion of macroporous volume.
2
Content available Research Results of a Complex Reagent for Wastewater Purification from Hydrogen Sulfide
Ospanov Kairat, Kuldeyev Erzhan, Kenzhaliyev Bagdaulet, Kuldeyeva Elmira
Journal of Ecological Engineering
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2022
|
Vol. 23, nr 5
278--285
EN
This article presents the results of research intended to obtain a complex alumina-iron reagent based on natural diatomite and industrial products of alumina production for wastewater purification from hydrogen sulfide. The material composition of the obtained samples using X-ray diffraction analysis was determined. The results of interaction research in the NaFeO2 – H2S – H2O system at 25°С are given. The results of research on wastewater purification from hydrogen sulfide in Almaty city with the use of ferric sulfate, ferric chloride, sodium ferrite and a complex reagent containing iron at the content of 5.1 mg/l H2S in the initial sample of wastewater were presented.
3
Content available Research on diatomite from Polish deposits and the possibilities of its use
Marczyk J., Pławecka K., Hebdowska-Krupa M., Nykiel M., Łach M.
Journal of Achievements in Materials and Manufacturing Engineering
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2022
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Vol. 115, nr 1
5--15
EN
Purpose: Diatomite from a deposit in Jawornik Ruski (Poland) has been selected as the material for study. The paper aimeds to show the possibility of using diatomite from the Carpathian Foothills as a sorbent of petroleum substances. Design/methodology/approach: Diatomite in the delivery condition (DC) and diatomite after calcination were used for this study. The material was calcined at 600, 650, 750, 850 and 1000°C. The diatomaceous earth was then granulated. The morphology of diatomite was observed using SEM. Particle size distribution was determined by Laser Particle Analyzer, chemical composition was determined by XRF, and mineralogical composition by XRD. Specific surface area, pore volume and pore size were determined. Thermal analysis (TG, DTA) was carried out. Absorption capacity tests were performed and the effect of diatomite addition on water absorption of concrete samples was determined. Findings: Within the framework of the study, it was shown that diatomite from the Jawornik deposit could be successfully used as a sorbent for petroleum substances. The absorption capacity of calcined at 1000°C diatomaceous earth was 77%. The obtained result exceeds the effectiveness of previously used absorbents, for which the sorption level is 60-70%. This allows commercial use of diatomite from deposits in Poland. In addition, water absorption tests have shown that diatomaceous earth can successfully replace cement used in concrete productione. The most favourablee effect on the reduction of water absorption is the addition of diatomite in the amount of 10%. Practical implications: The properties of diatomaceous earth from the Jawornik Ruski deposit indicate its high potential for use in the synthesis of geopolymers, which is important not only from an economic but also from an ecological point of view. Originality/value: The novelty of this work is the demonstration of the possibility of using diatomite as a sorbent of petroleum substances with high efficiency, exceeding the previously used sorbents.
4
Content available remote Badania efektywności procesów sorpcji jonów Cr(III) i Cr(VI) na nieaktywowanym i aktywowanym bentonicie oraz diatomicie metodą spektrofotometrii absorpcyjnej UV-VIS
Siewiorek-Talikowski Jakub, Szewczak Agnieszka, Waszczuk Patryk, Zubek Klaudia
Analit
|
2022
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Nr 12
92--102
PL
W pracy przedstawiono rezultaty procesów sorpcji jonów Cr(III) i Cr(VI) na nieaktywnym i aktywowanym bentonicie oraz diatomicie firmy „CERTECH”. W toku przeprowadzonych badań dokonano optymalizacji warunków sorpcji oraz sprawdzono, który z materiałów stanowi najlepszy sorbent zarówno dla sorbatu, który stanowiły jony Cr(III) lub Cr(VI), jak i dla sorbatu będącego mieszaniną tych jonów. W celu oceny kinetyki i efektywności sorpcji oznaczano stężenie Cr(III) i Cr(VI) w roztworach po procesie sorpcji metodą spektrofotometrii absorpcyjnej UV-VIS.
EN
The aim of the study was to analyzed the possibility of sorption Cr(III) and Cr(VI) ions on materials from the company "CERTECH" - unactivated bentonite, activated bentonite and diatomite. In the course of the study, optimization of sorption conditions was carried out and it was verified which of the materials is the best sorbent both for the sorbate, which represented Cr(III) or Cr(VI) ions individually, and for the sorbate, which is a mixture of Cr(III) and Cr(VI) ions. In order to determine the material with the highest sorption efficiency, the UV-VIS Spectroscopy method was used.
5
Diatomit - materiał o wielu możliwościach
Szymańska Monika, Kręgiel Dorota
Laboratorium - Przegląd Ogólnopolski
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2021
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nr 2
59--62
PL
Diatomit to ziemia okrzemkowa, naturalny minerał pochodzenia organicznego. Skały okrzemkowe należą do skał osadowych, powstałych w okresie trzeciorzędu i czwartorzędu z pancerzyków jednokomórkowych okrzemek, które osiadły na dnie mórz i jezior. Podstawowym składnikiem diatomitu jest krzemionka SiO2 o różnym stopniu uwodnienia, której towarzyszą niewielkie ilości innych substancji mineralnych. Materiał ten posiada ujemny ładunek elektryczny, stąd zdolność diatomitu do przyciągania różnorodnych cząsteczek, do których należą liczne zanieczyszczenia. Artykuł omawia unikatowe właściwości diatomitu, które mogą być wykorzystane w wielu dziedzinach biogospodarki.
EN
Diatomite is diatomaceous earth, a natural mineral of organic origin. Diatomaceous rocks were formed in the Tertiary and Quaternary periods from the shells of single celled diatoms that settled on the bottom of seas and lakes. The basic component of diatomite is silica SiO2 of various degrees of hydration, with small amounts of other minerals. This mineral material has a negative electric charge, therefore diatomite shows ability to attract various particles, including numerous impurities. The paper discusses the unique properties of diatomite that can be used in many areas of the bioeconomy.
6
Content available Adsorption of Chromium (VI) on Raw and Modified Carpathian Diatomite
Puszkarewicz Alicja, Kaleta Jadwiga
Journal of Ecological Engineering
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2019
|
Vol. 20, nr 7
11--17
EN
The paper presents the research on the usability of natural Carpathian diatomite for removing chromate ions from water solutions. The concentration of chromium (VI) in test water was C0 = 1 g/m3. Both raw diatomite and the diatomite modified with iron compounds of granulation 0.5–1.0 mm were tested. The process kinetics, as well as the effect of water reaction and the diatomite type on chromium sorption were determined under static conditions (no through flow). For both diatomite types, the chromium adsorption proceeded most effectively at pH 4. The effect of diatomite modification with iron compounds on the effectiveness of chromium (VI) adsorption was determined on the basis of Freundlich adsorption isotherm. Compared to raw diatomite, the modified adsorbent (diatomite-Fe) exhibited great sorption capacity for chromate ions from water. When applied under dynamic conditions (v = 4 m/h), as filtration bed, it removed chromium compounds from water very effectively. It makes diatomite-Fe material a promising candidate for application in water treatment systems. The chromium concentration in the effluent oscillated within Ck = 0.001–0.002 mg/dm3, and the adsorption capacity of the bed, determined in the bed breakthrough point, reached Pp = 316.8 mg/kg.
7
Content available Development of the diatomite production, reserves and its processing in the Czech Republic in 1999‒2018
Zahradník Jan, Jirásek Jakub, Zahradník Jiří, Sivek Martin
Gospodarka Surowcami Mineralnymi
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2019
|
T. 35, z. 2
31--48
EN
This paper aims to characterize and interpret the trends in reserves, resources, and mine production of diatomite in the Czech Republic in last two decades. With more than 2.4 million tonnes of total reserves, 1.6 million tonnes of exploitable (recoverable) reserves, and average annual production of 35 kt, diatomite is not one of the key industrial minerals of the Czech Republic, which ranks among the top 10 European producers. Historical diatomite deposits were situated within the Cheb Basin, where the Holocene Hájek diatomite deposit was abandoned in 1955 because of the establishment of the Soos National Natural Monument. The group of Tertiary diatomite deposits situated in the Central Bohemian Upland ceased extraction when the last deposit (Kučlín) was abandoned in 1966 after depletion of reserves. The last group of diatomite deposits is located within the Southern Bohemian basins, where the last productive deposit, Borovany-Ledenice, is situated. Miocene diatomites are extracted by open pit mining there. Production of crude diatomite varied from 0 to 83 kt, with an average of 35 kt, between 1999 and 2018 according to stockpiles. Raw diatomite is classified into two groups according to the chemical-technological properties. Better-quality diatomite (SiO2 ≥ 72%, Al2O3 ≤ 15%, Fe2O3 < 2.4%, bulk density 450 kg/m3, loss on ignition < 8%) is processed for filtration in the food industry (brewery, wine, and raw fruit juices). Material with lower quality is used in combination with bentonite to prepare cat litter products.
PL
Niniejszy artykuł ma na celu scharakteryzowanie i zinterpretowanie trendów dotyczących zasobów wydobywalnych i geologicznych oraz wydobycia ziemi okrzemkowej w Czechach w ciągu ostatnich dwóch dekad. Przy ponad 2,4 mln ton łącznych zasobów, 1,6 mln ton zasobów eksploatacyjnych (wydobywalnych) oraz średniej rocznej produkcji wynoszącej 35 tys. ton, ziemia okrzemkowa nie należy do kluczowych minerałów przemysłowych w Republice Czeskiej, która to plasuje się wśród 10 największych europejskich producentów tego surowca. Historyczne złoża ziemi okrzemkowej znajdowały się w obrębie Kotliny Chebskiej, gdzie w 1955 r. zamknięto holoceńskie złoże diatomitu Hájek, czego przyczyną było ustanowienie Narodowego rezerwatu przyrody Soos. Trzeciorzędowe złoża ziemi okrzemkowej Czeskiego Średniogórza zaprzestały wydobycia wraz z opuszczeniem ostatniego złoża (Kučlín) w roku 1966 wskutek wyczerpania zasobów. Ostatnia grupa złóż ziemi okrzemkowej znajduje się na terenie południowych kotlin czeskich, gdzie znajduje się ostatnie eksploatowane złoże Borovany-Ledenice. Mioceńskie diatomity są wydobywane w kopalni odkrywkowej. W latach 1999–2018, produkcja diatomitu wahała się, w zależności od zapasów, od 0 do 83 kt, przy średniej wynoszącej 35 kt. Surowa ziemia okrzemkowa dzieli się na dwie grupy zgodnie z właściwościami chemiczno-technologicznymi. Lepszy jakościowo diatomit (SiO2 ≥ 72%, Al2O3 ≤ 15%, Fe2O3< 2,4%, gęstość nasypowa 450 kg/m3, straty podczas prażenia <8%) jest przetwarzany i używany jako środek filtrujący w przemyśle spożywczym (browarnictwo, produkcja win i surowych soków owocowych). Surowca o niższej jakości używa się w połączeniu z bentonitem w procesie produkcji żwirku dla kotów.
8
Content available remote Grafit i diatomit jako dodatki do zaczynów uszczelniających otwory w geotermii
Sapińska-Śliwa A., Śliwa T., Wiśniowski R.
Przemysł Chemiczny
|
2017
|
T. 96, nr 8
1723--1725
PL
Przeanalizowano wpływ przewodnictwa cieplnego uszczelnienia na efektywność energetyczną otworów (straty ciepła). Podano przykłady obrazujące zastosowanie dobranych zaczynów uszczelniających oraz ich wpływ na funkcjonowanie ujęcia ciepła Ziemi. Przedstawiono wpływ tanich środków (grafit, diatomit), które umożliwiają regulację przewodności cieplnej stwardniałego zaczynu. Grafit zwiększa przewodność cieplną, a diatomit minimalnie ją zmniejsza. Ze względu na duże ilości zaczynu do uszczelniania otworów, które tworzą podziemne magazyny ciepła, środki regulujące parametry zaczynów nie mogą być drogie.
EN
Plate graphite and diatomite were added to cement grouts used for sealing the boreholes. The addn. of graphite resulted in an increase in the thermal cond. of the grout while the addn. of diatomite resulted in its decrease.
9
Content available The impact of diatomite on the thermal conductivity of solidified grout
Dubiel S., Śliwa T., Kowalski T., Stryczek S., Wiśniowski D., Bieda A., Piwowarczyk S., Beszłej J., Naklicki M.
AGH Drilling, Oil, Gas
|
2017
|
Vol. 34, no. 3
691--700
EN
The use of suitable materials for the preparation of sealing grout is an important issue from the point of view of the correct construction of borehole heat exchangers and geothermal wells. The minimization of the loss of heat during the transport of thermal water in geothermal wells can be achieved by use of sealing slurries with reduced thermal conductivity. Such slurries are also recommended in the upper part of deep borehole heat exchangers and the upper part of energy piles. The publication describes the impact of the addition of diatomite as a material lowering the thermal conductivity of solidified grout.
10
Content available Characteristics of cationic red x-grl adsorption by raw diatomite and diatomite concentrate
Ren Z., Guan J., Gao H., Tian J., Wen Y., Zheng R.
Physicochemical Problems of Mineral Processing
|
2016
|
Vol. 52, iss. 1
44--55
EN
Raw diatomite (RD) and diatomite concentrate (DC) were used for the adsorption of cationic Red X-GRL from aqueous solutions. Mono-factor experiments were carried out to investigate the effects of the operation factor, and adsorption kinetics, isotherms, thermodynamics and mechanisms were explored. Similar trend for X-GRL adsorption onto RD and DC was observed. The adsorption capacity of dyes increased slightly with temperature, and the neutral pH was the optimum level. The adsorption processes occurred in accordance with the pseudo second-order model and were well fitted by the Langmuir isotherm model. The main driving forces of the physical adsorption on the diatomite were electrostatic attraction and van der Waals force. The RD could uptake more X-GRL than DC due to its higher content of fine particle and therefore, due to higher surface area available for adsorption. Raw diatomite as a cheap absorbent for X-GRL removal can be suggested as a promising supplement to activated carbon.
11
Content available Diatomaceous rocks of the Jawornik deposit (the Polish Outer Carpathians): petrophysical and petrographical evaluation
Figarska-Warchoł B., Stańczak G., Rembiś M., Toboła T.
Geology, Geophysics and Environment
|
2015
|
Vol. 41, no. 4
311--331
EN
Diatomites belonging to a list of raw materials used in the EU criticality assessment are essential to many industrial applications due to a unique combination of their physical properties, i.e. porous and permeable structure, high specific surface area and adsorption capacity, low density and thermal conductivity, and chemical inertness. The present study was undertaken to analyse the relationships between the pore network characteristics, petrophysical parameters, and mineralogical variability of the Lower Miocene diatomites from the Jawornik deposit (Skole Unit, the Polish Outer Carpathians, SE Poland). Five varieties of the diatomites, distinguished on the basis of the macroscopic features, i.e., colour and fracturing effects, have been investigated by SEM, chemical and XRD analysis, mercury intrusion porosimetry, helium pycnometry, and the Vickers hardness tests. Significantly differing are two varieties. The light-coloured, massive and block-forming diatomites (variety BL) consist mainly of poorly cemented siliceous skeletal remains of diatoms, and represent the rocks with high total porosity (38–43%), low bulk density (1.28–1.38 g/cm3) and low microhardness (10.7 HV0.3). The dark-gray silicified diatomites with a platy or prismatic splitting (variety PD) reveal obscured microfossils of diatoms and are the most compact and hard rocks (80.8 HV0.3), with poor total porosity (17–24%) and higher bulk density (1.70–1.78 g/cm3). The spatial distribution of the field identifiable rock varieties allows selective exploitation of the diatomites with the predictable petrophysical characteristics that define their future use.
12
Content available Thermodynamics and adsorption studies of dye (rhodamine-b) onto natural diatomite
Koyuncu M., Kul A. R.
Physicochemical Problems of Mineral Processing
|
2014
|
Vol. 50, iss. 2
631--643
EN
Thermodynamics and adsorption studies were conducted with a dye of rhodamine-B on natural diatomite. Adsorption of the dye was investigated with an initial dye concentration at pH 8±0.2, 303, 313 and 323 K. The adsorption experiments were carried out isothermally at three different temperatures. The Langmuir and Freundlich isotherm models were used to describe the equilibrium data and the results were discussed in details. The kinetic data agreed with the pseudo-first order model with rate constants (k2) in the range of 3.05–1.59.10–1 g/mg min. The thermodynamic parameters such as standard free energy, entropy change and enthalpy were calculated for natural diatomite. These values showed that adsorption of rhodamine-B on natural diatomite was a spontaneous and endothermic process.
13
Content available Physical purification of diatomite based on laminar-flow centrifugal separation
Yang X., Sun Z., Zheng S.
Physicochemical Problems of Mineral Processing
|
2014
|
Vol. 50, iss. 2
705--718
EN
Natural diatomaceous earth or diatomite of good quality becomes rare and a demand for it increases every year. In this paper, we develop a novel method based on laminar-flow centrifugal separation to purify mid- and low-grade diatomite for industrial production purposes. Effects of the drum cone angle, drum speed, feeding concentration, feeding flow rate and feeding time on separation were investigated experimentally. The interdependency of these variables was studied using a response surface experiment. Operating conditions of a laminar-flow centrifugal separator were further optimized. Results showed that the feeding flow rate had a great influence on a silicon dioxide content of diatomaceous in concentrate and tailing. The optimal separation results were achieved as 87.5 wt.%, of SiO2 content of diatomaceous in concentrate and 6.98 wt.% in tailing. The optimal operating conditions included the drum cone angle of 0.0087 rad, the drum speed of 89.62 rad/s, the feeding concentration of 24.66 wt.%, the feeding flow rate of 2.33×10–4 m3/s, and the feeding time of 90 s. A scanning electron microscopy (SEM) clearly indicated that the pore blockage on the surface of diatoms was cleared out. The variation about the breakage rate of diatom shells was lower than 5% through the pilot purification production line. The characterization of original diatomite and derived products after purification were determined by X-ray diffraction (XRD). The results indicated that the impurity content of purified diatomite was improved significantly.
14
Content available remote Colour removal from aqueous solution of tar-chromium green 3G dye using natural diatomite
Koyuncu M.
Physicochemical Problems of Mineral Processing
|
2012
|
Vol. 48, iss. 2
485-494
EN
Removal of Tar-Chromium Green 3G dye from aqueous solution at different dye concentrations, different temperatures and adsorbent doses has been studied. It was seen that the maximum of 88% adsorption has been achieved from the wastewater using 3.0 g material at 30oC temperature for shaking time of 60 min.The adsortion isotherms are described by means of the Langmuir and Freudlich isotherms at different temperatures of 25, 30 and 35C, and the results were discussed. The equilibrium data satisfied both the Langmuir and Freundlich models. Moreover, thermodynamic parameters such as ΔH, ΔS and ΔG were also studied. It was found that the values of standard free energy (ΔG) and the values of standard enthalpy (ΔH) were negative and entropy (ΔS) was found to be positive. Thermodynamic studies showed that the reaction for uptake by diatomite is exohtermic in nature.The results of this study showed that diatomite could be employed as effective and low-cost materials for the removal of the dye from aqueous solution.
15
Content available remote Evaluation of Egyptian diatomite for filter aid applications
Ibrahim S. S., Selim A. Q.
Physicochemical Problems of Mineral Processing
|
2011
|
Vol. 47
113-122
EN
Diatomite is fine-grained fossil siliceous sedimentary rock. It consists of micronized amorphous silica with a special porous structure. In this study, a technological diatomite sample was subjected to characterization by XRD, XRF, SEM and TEM techniques. Results showed the high grade of the sample with silica content exceeding 90% SiO2. The main accompanying minerals were fine sands, calcite, and kaolinite. The sample was subjected to gentle size reduction to avoid ore cell destruction. The attrition +74μm fraction was rejected, where the -74μm slurry continued refining via the 7.62cm Sprout Bauer and the 5.08cm Mosley hydrocyclones. The -25μm fraction was investigated as the final refined diatomite product.
16
Content available remote Teksturalne, adsorpcyjne i katalityczne właściwości diatomitu i jego chemicznych modyfikacji
Sarbak Z.
Przemysł Chemiczny
|
2010
|
T. 89, nr 5
692-695
17
Content available remote Parametry płukania złóż diatomitowych
Siwiec T.
Gaz, Woda i Technika Sanitarna
|
2010
|
Nr 9
11-14
PL
Charakterystyka diatomitu. Wyniki badań :strat ciśnienia w funkcji prędkości płukania podczas przepływu wody przez złoże nieruchome i złoże w stanie fluidalnym, minimalnej prędkości fluidyzacji oraz zmiany ekspansji złoża.
EN
Diatomite characteristics. Research results for: pressure losses in the function of rinsing speed during water flow through immobile bed and through fluid bed; minimal fluidization speed; bed expansion change.
18
Content available remote Activity of nitrifying biofilm in the process of water treatment in diatomite bed
Zamorska J., Papciak D.
Environment Protection Engineering
|
2008
|
Vol. 34, nr 1
37-52
EN
The study deals with the efficiency of removing ammonium nitrogen from water in biofiltration process. For the research purposes diatomite was used as packing of biological reactor. As a biofilter filler, diatomite was simultaneously the sorbent, the culture medium and the carrier of microorganisms. The biological activity of the bed was assessed taking account of the effectiveness of removing ammonia nitrogen in the process of nitrification and the time of biofilm formation. Diatomite stimulates the growth of biomass and the process of effective removal of ammonia nitrogen, reaching even 100%. SEM image proved that the surfaces of diatomite bed grains were overgrown with microorganisms. The biofilm structure was loose and porous, being characteristic of aerobic biofilm. The biofilm covered the entire grain surface.
PL
Zbadano efektywność usuwania azotu amonowego podczas biofiltracji. Jako wypełnienie reaktora biologicznego zastosowano diatomit, który pełnił rolę sorbentu, pożywki i nośnika mikroorganizmów. Oszacowano biologiczną aktywność złoża w powiązaniu zarówno z efektywnością usuwania azotu amonowego w procesie nitryfikacji, jak i tworzeniem się biofilmu. Diatomit stymuluje rozwój biomasy, dlatego usuwanie azotu amonowego z wody przebiegało z dużą efektywnością, osiągającą wartość 100%. Obraz z mikroskopu skaningowego potwierdził, że mikroorganizmy porosły powierzchnię ziaren. Biofilm miał luźną i porowatą strukturę charakterystyczną dla biofilmu aerobowego i pokrywał całą powierzchnię ziarna.
19
Content available remote Klinoptylolity i diatomity w aspekcie przydatności w uzdatnianiu wody i oczyszczaniu ścieków
Kaleta J., Papciak D., Puszkarewicz A.
Gospodarka Surowcami Mineralnymi
|
2007
|
T. 23, z. 3
21-34
PL
W artykule przedstawiono i zsyntetyzowano wyniki badań dotyczących zastosowania klinoptylolitów i diatomitów do usuwania wybranych zanieczyszczeń z roztworów wodnych. Klinoptylolit pochodzący ze Słowacji skutecznie usuwał jony amonowe z roztworów o małej twardości, a jego regenerację prowadzono za pomocą chlorku sodu. Zarówno klinoptylolit jak i diatomit (pochodzący z Polski) sorbowały zanieczyszczenia ropopochodne z roztworów wodnych. Zużyte sorbenty regenerowano termicznie. Badane minerały stanowiły również dobre podłoże do rozwoju i immobilizacji mikroorganizmów prowadzących proces nitryfikacji oraz biodegradacji substancji ropopochodnych.
EN
Results of tests on the applicability of clinoptylolite and diatomite for removing of impurities from water solutions are presented and synthesized. Clinoptylolite from Slovakia proved effective in removing ammonium ions from low-hardness solutions and its regeneration is carried out with the use of sodium chloride. Both clinoptylolite and diatomite (from Polish source) sorbed oil related impurities from water solutions. Spent sorbents were thermally regenerated. Tested minerals constituted also a good basis for growth and immobilization of microorganisms which run the process of nitrification and biodegradation of oil related substances.
20
Content available remote Sorpcja oleju na złożach mineralnych
Michel M. M.
Przegląd Naukowy Inżynieria i Kształtowanie Środowiska
|
2006
|
Vol. 15, No. 1
96--102
EN
Products of oil refinement and edible oils are main sources of pollution of natural environment. They also disrupt proper functioning of sewage systems and biological components of sewage treating plants. Diatomite and clinoptilolite are effective sorbents in removing oil contaminations from hard surfaces. This fact served as a prompt to research chalcedonite’s properties in this field. The research compared chalcedonite’s, diatomite’s and clinoptilolite’s properties of sorption of rape oil and diesel oil. For reference quartz sand was used as well. Two granulations of beds were used: 0.5-0.8 mm and 1.25-2.0 mm. The results confirmed a need of further research on chalcedonite’s capabilities of sorption of oil contaminations.
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