Dumitru Bulgariu

Academia Romana, Bucureşti, Hunedoara, Romania

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Publications (46)43.12 Total impact

  • Laura Bulgariu, Dumitru Bulgariu
    10/2014; 4(1).
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    Desalination and water treatment 10/2014; · 0.99 Impact Factor
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    ABSTRACT: The Bistrița Aurie and Dorna rivers, tributaries of the longest Romanian mountain river Bistrița, located in the Eastern Carpathians, have been selected for investigations of heavy minerals in alluvial sediments. The investigations comprise basic parameters such as colour, morphology and grain size. However, the major aspect of this study concerns identification of heavy mineral species and their compositions and determining the frequency in the heavy mineral fraction in order to trace their sources and to indicate their possible economic significance. The sampling and method used was in situ panning. Heavy mineral assemblages of the Bistrița Aurie and Dorna rivers are mainly concentrated in grain-size fractions between 500 and 71 μm. The main heavy minerals in the alluvial sediments studied are: garnet (most abundant in the Bistrița Aurie sediments), pyroxene (abundant and present only in the Dorna sediments), manganese- and iron oxides, ilmenite, rutile and pyrite. Other minerals, such as zircon, monazite and titanite, have been identified only as inclusions in various types of minerals. The alluvial sediments of the Bistrița Aurie contain mineral species entirely specific of a metamorphic source, while the Dorna sediments contain minerals typical of both metamorphic and igneous sources.
    Carpathian journal of earth and environmental sciences 01/2014; 9(3):177-186. · 0.73 Impact Factor
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    Dumitru Bulgariu, Constantin Rusu, Laura Bulgariu
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    ABSTRACT: The adsorptive characteristics of Ni(II) from aqueous media on histosol modified by simple chemical treatments was investigated. The chemical treatments have been achieved by mixing histosol with aqueous solution of common chemical reagents (HNO 3 , NaCl and NaOH, respectively), without the addition of supplementary additives. The influence of initial Ni(II) concentration and equilibrium contact time was studied in a series of batch experiments, in comparison with untreated histosol. An increase of adsorption capacity of histosol in case of treatments with NaCl and NaOH (15.58 % and 24.19 %, respectively) was obtained, and this is mainly attributed to the increase of functional groups availability from adsorbent surface. In addition a significant decrease of equilibrium contact time in case of modified histosol was also found. The experimental data were analyzed using two isotherm models (Langmuir and Freundlich) and three kinetics models (pseudo-first order, pseudo-second order and intra-particle diffusion model). The Langmuir model provides best correlation of equilibrium experimental data, and the pseudo-second order describes well the adsorption kinetics of Ni(II) on untreated and modified histosol. The histosol modified by considered simple chemical treatments has potential for serving as Ni(II) adsorbent, and the cost of these treatments is very low.
    Studia Universitatis Babeș-Bolyai. Chemia 12/2013; 4:121-136. · 0.14 Impact Factor
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    ABSTRACT: Sulphide-ore mining in the Leșu Ursului mining district, dating from approximately 1965 up to 2008, has left behind a number of tailings, which potentially constitute environmental hazards. We have investigated the topstratum (from 0 to 20 cm depth) of three of the most notable recent tailings, in an attempt to trace their geochemical and mineralogical evolution. The three tailings have different ages, the ones at Pârâul Câinelui being the oldest, followed by the Leșu Ursului – Puțul 7 tailings and the relatively recently closed Isipoaia tailings. The samples have been investigated by means of XRF for heavy metal contents, while the mineralogical composition was determined by XRD. The pH and redox potential were also determined by using the potentiometric method. The comparison of the results of the three tailings different in age illustrates that the pH has rapidly decreased during the first 5–7 years, before starting to increase towards neutral values. Simultaneously, sediment develops from a highly oxidizing to a slightly reducing environment. At the same time, the contents of Pb, Cu, As, Zn and Bi show a continuous decrease in average content, in contrast to Mn, Cr and Ni, which follow the opposite trend. For some elements such as Ga, La, Nb and Sc there was a slight increase of content with age. Regarding the major elements, our data demonstrate that the average percentages for Fe have decreased, while Al, Si, Mg, Na and K show increased concentration. The mineralogical analysis shows that jarosite and gypsum play a significant role in the youngest tailings, while they are absent in the oldest one, where ankerite and kaolinite were detected.
    Neues Jahrbuch für Mineralogie - Abhandlungen 04/2013; 190(3):265-279. · 0.86 Impact Factor
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    Dumitru Bulgariu, Laura Bulgariu
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    ABSTRACT: Sorption of Pb(II) was studied by using a biosorbent mixture of algae waste biomass and Purolite A-100 resin in a packed-bed column. Mixing these two components was done to prevent the clogging of the column and to ensure adequate flow rates. Increasing of solution flow rate and initial Pb(II) concentration make that the breakthrough and saturation points to be attained earlier. The experimental breakthrough curves were modeled using Bohart-Adams, Thomas and Yoon-Nelson models, and the parameters for all these models were calculated. A regeneration efficiency of 98% was achieved using 0.1molL(-1) HCl and not significant changes in lead uptake capacity after three biosorption/desorption cycles were noted. The biosorbent mixture was able to remove Pb(II) from synthetic wastewater at pH 5.0 and flow rate of 3.5mLmin(-1), and the obtained effluent has better quality characteristics. The biosorbent mixture it is suitable for a continuous system for large-scale applications.
    Bioresource Technology 11/2012; 129C:374-380. · 5.04 Impact Factor
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    Laura Bulgariu, Dumitru Bulgariu
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    ABSTRACT: A simple, sensitive and selective spectrophoto-metric method is proposed for rapid and direct determina-tion of nitrate in small volumes of natural surface waters (maximum 2.0 ml), and optimal experimental conditions, along with other analytical parameters, have been evalu-ated. The method is based on the reaction between nitrate and chromotropic acid, in concentrated sulfuric acid media (95 %), when a yellow colored product is obtained. The visible spectra of this reaction product, recorded against a blank solution, show a maximum at 412 nm, and the absorbance remains stable for at least 24 h. The method allows the nitrate determination over the range 0.50 – 11.00 mg l -1 , with a molar absorptivity of 3.837 × 10 4 l mol -1 cm -1 and a detection limit of 0.12 ppm. The interfer-ences caused by several common ions (K + , NH 4 + , Na + , Ca 2 + , Mg 2 + , Al 3 + , Cl -, NO 2 -, HCO 3 -, CO 3 2-, H 2 PO 4 -, HPO 4 2-) which are present in most natural surface waters were determined. The validation of the spectrophotometric method was done by comparing the nitrate content obtained by the proposed method with those obtained by using the stand-ard method with sulphosalicylic acid, for all studied types of waters (drinking water, tap water, river water and sea water). The results show that the proposed method can be successfully used for direct determination of nitrate in small volumes of natural surface waters (maximum 2.0 ml). The main advantage of this method is that the colored reaction product appears immediately after mixing the reagents; other intermediary steps are not necessary.
    Reviews in analytical chemistry 09/2012; 31(3-4):3-4. · 1.00 Impact Factor
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    Laura Bulgariu, Dumitru Bulgariu, Matei Macoveanu
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    ABSTRACT: Batch experiments aimed at the sorption of Pb(II) onto peat were performed from an aqueous solution in both the absence and presence of common complexing agents (acetate or citrate). The influence of the initial pH of the solution, metal ion concentration and contact time on the sorption efficiency of Pb(II) was examined at ambient temperature (18 ± 0.5) °C for each experiment. The results showed that the presence of acetate improved the efficiency of the sorption process, while the presence of citrate in the aqueous solution decreased the efficiency of the Pb(II) sorption onto peat. The equilibrium data fitted well with the Langmuir isotherm model and confirmed the monolayer sorption of uncomplexed and complexed Pb(II) species onto peat. The values of maximum sorption capacities (q max) were 135.13 mg g−1 for Pb(II) complexed with acetate, q > 79.36 mg g−1 for uncomplexed Pb, q > 38.46 mg g−1 for Pb(II) complexed with citrate. The kinetics of Pb(II) sorption onto peat, in both the absence and presence of complexing agents, indicated a pseudosecond order mechanism. Analysis of IR spectra showed that carboxylic and hydroxyl groups had an important role in the binding process of Pb(II) species onto peat.
    Chemical Papers- Slovak Academy of Sciences 04/2012; 66(4). · 1.19 Impact Factor
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    ABSTRACT: Chromium and cadmium are heavy metals that occur naturally in the environment and especially in soils. Their toxic effect is more pronounced at high concentrations and it depends on the oxidation states. While Cr (III) is considered an essential trace element for the metabolism of living organisms, Cr (VI) has a higher mobility and is easily soluble in soils and can be leached into surface water or groundwater, and taken up by plants. That leads to a toxic and carcinogenic effect to humans via inhalation for long exposures. The concentrations and the form of heavy metals in soils and the behavior of their free ions in soils solution are influenced by soil pH, organic matter (OM) content, cation exchange capacity (CEC), and clay mineralogy. This work presents the toxicity effect of two common heavy metals that can be found in soil (chromium and cadmium) on two microbial strains, which are also isolated from soil: Azotobacter sp. and Pichia sp. Batch tests where made using different concentrations of the selected heavy metals and culture medium: for Azotobacter sp. strain was used a Sabouraud medium and for Pichia sp. strain a YEPD medium (Yeast Extract, Pepton, Dextrose). The dry weights of the microbial culture were used to determine the microbial growing, calculated in percent inhibition of dry weight versus concentrations of metal ions.
    Environmental engineering and management journal 01/2012; 11(11):165-168. · 1.26 Impact Factor
  • Dumitru Bulgariu, Laura Bulgariu
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    ABSTRACT: The biosorption of Pb(II), Cd(II), and Co(II), respectively, from aqueous solution on green algae waste biomass was investigated. The green algae waste biomass was obtained from marine green algae after extraction of oil, and was used as low-cost biosorbent. Batch shaking experiments were performed to examine the effects of initial solution pH, contact time and temperature. The equilibrium biosorption data were analyzed using two isotherm models (Langmuir and Freundlich) and two kinetics models (pseudo-first order and pseudo-second order). The results indicate that Langmuir model provide best correlation of experimental data, and the pseudo-second order kinetic equation could best describe the biosorption kinetics of considered heavy metals.
    Bioresource Technology 10/2011; 103(1):489-93. · 5.04 Impact Factor
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    Balaban S.I, Iancu O.G, Bulgariu D
    Carpathian journal of earth and environmental sciences 09/2011; 6(2):279-288. · 0.73 Impact Factor
  • Laura Bulgariu, Dumitru Bulgariu
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    ABSTRACT: Experimental results obtained for gold(III) extraction in aqueous polyethylene glycol (PEG)-based two-phase system using chloride ions as extracting agents are presented in this study. The experiments were performed by batch technique, using an aqueous two-phase system prepared by mixing equal volumes of 40% (w/w) PEG(1500) aqueous solution and 40% (w/w) (NH4)2SO4 aqueous solution, both in absence and in presence of chloride ions extractants. The influence of several experimental parameters, such as initial gold(III) concentration, salt stock solution pH and chloride ions extractant concentration on gold(III) extraction efficiency was investigated. The experimental results have shown that gold(III) is quantitatively extracted (>98%) into PEG-rich phase in acid media (pH⩽3.0) and at chloride ions concentration higher than 0.08molL−1. From the distribution coefficients determined as a function of chloride ions concentration into PEG-rich phase, the extracted species were identified. The comparison of the extraction behaviours of gold(III) and other metal ions (Cu(II), Co(II), Ni(II), Zn(II), Fe(III) and Pb(II)) was also examined. The validation of this method was done by recovery of gold from electrical wastes. The results present in this study show that the aqueous polyethylene glycol-based two-phase extraction system has potential for practical application in the extraction and separation of gold from chloride media.
    Separation and Purification Technology 08/2011; 80(3):620-625. · 3.07 Impact Factor
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    Laura Bulgariu, Dumitru Bulgariu, Matei Macoveanu
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    ABSTRACT: The adsorptive performances of alkaline treated peat have been investigated for the removal of Pb(II), Co(II), and Ni(II) ions from aqueous solutions. The influence of initial metal ions concentration and equilibrium contact time was studied in a series of batch experiments, in comparison with natural peat. An increasing of adsorption capacity of alkaline treated peat was obtained for all studied heavy metals (23.07% - Pb(II), 23.53% - Co(II), and 26.19% - Ni(II)). The Langmuir isotherm model was the best model for the mathematical description of studied heavy metals adsorption on alkaline treated peat. A significant decrease of equilibrium contact time in case of alkaline treated peat was also found. The kinetics of Pb(II), Co(II), and Ni(II) uptake by alkaline treated peat followed the pseudo-second order mechanism. The FT-IR spectrometry analysis showed that carboxylic (-COO) and hydroxyl (-OH) groups play an important role in the heavy metals binding process. The heavy metal could by easily eluted from the loaded adsorbent with 0.1 mol/L HCl and the adsorbent may be reused in several adsorption/desorption cycles. The alkaline treated peat has better adsorption characteristics for the removal of heavy metals from aqueous solutions, and the cost of this treatment is very low.
    Separation Science and Technology 03/2011; 46(6):1023-1033. · 1.20 Impact Factor
  • Camelia Betianu, Maria Gavrilescu, Dumitru Bulgariu
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    ABSTRACT: The aim of this study was to investigate the Congo red sorption on soil from the region of Iasi (NE of Romania). The effects of contact time, temperature, sorbent dose and initial dye concentration on soi sorption were investigated. The results show that the amount adsorbed of Congo red on soil increase with increasing dye concentration, temperature and contact time. The experimental data were analyzed using the pseudo-first order Lagergren model, the pseudo-second order model and intraparticle diffusion model. Experimental results show that the dye sorption process follows the pseudo-second-order kinetic model. Intraparticle diffusion studies indicated that the adsorption mechanism was not exclusively controlled by the diffusion step. The equilibrium sorption data were interpreted using Langmuir, Freundlich and Tempkin models and the results were best described by Freundlich isotherm. It was indicative of the heterogeneity of the sorption sites on the soil particle. Thermodynamic analysis of the Congo red sorption on studied soil indicates that the system is spontaneous and exothermic in nature. Keywords: Congo red; Sorption; Kinetic models; Langmuir; Freundlich and Tempkin isotherms; Sorption thermodynamic
    International Journal of Environmental Research 01/2011; 5(1):177-188. · 1.82 Impact Factor
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    ABSTRACT: Chromium (Cr) is one of the most common metal contaminants in soil because of its use in ore refining, production of steel and alloys, metal plating, tanneries, wood preservation, and pigmentation. In soil environment, the most stable oxidation states of chromium are Cr (III) and Cr (VI). While Cr (III) is considered an essential trace element for the functioning of living organisms, Cr (VI) is toxic and carcinogenic to humans via inhalation for long exposures, since it is easily soluble and mobile in soils and can be leached into surface water or groundwater, and taken up by plants. The efficacy of remediation processes are highly dependent on chromium sorption and desorption kinetics and on the influence of competing solute anions. Models to predict the transport of Cr(VI) in soils must therefore incorporate these effects. The objective of the study was to speciate and to evaluate various soil Cr species in relation to soil properties. Adsorption and reduction of added Cr(VI) were characterized in soils with contrasting pH, organic matter contents, and chemical and mineralogical properties. Batch experiments are used to determine equilibrium sorption parameters for chromium by soil and to study sorption kinetics that are relevant to soil contamination sites. The distribution of metal contaminant in soils can be strongly localized by transport limitations and redox gradients within soil aggregates. The soils adsorption and reduction capacities were eventually overwhelmed, however, and permitted the passage of Cr(VI) into the underlying ground water.
    Environmental engineering and management journal 09/2010; 9:89-94. · 1.26 Impact Factor
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    ABSTRACT: Research bring a series of new data concerning the speciation and distribution processes and risk potential of chrome in soil cultivated with vegetables. A number of 16 samples of soils cultivated with vegetables (tomatoes, cucumbers, pepper, cauliflower and celery), in the open field and plastic tunnels, using traditional technologies (was used for thi experiment). Soil samples were taken from 0-20 cm depth interval of the row and the interval between rows. The experimental results have indicates that the studied soils are not contaminated and have a high supply level of chrome. Towards to chemical-mineralogical components of soils, the chrome has a heterogeneous distribution, and the speciation and distribution inter-phases equilibriums are very sensitive to the variation of physic-chemical conditions. The risk potential of chrome is very low, due to the reduced mobility and biodisponibility of speciation forms and due to high probability of reducing Cr(IV) to Cr (III), in the conditions of studied soils.
    LUCRĂRI ŞTIINŢIFICE Vol. 53 NR. 2 SERIA HORTICULTURĂ; 05/2010
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    ABSTRACT: A number of 16 samples of soils cultivated with vegetables (tomato, cucumber, pepper, cauliflower and celery) using traditional technologies, in open filed and plastic tunnels, was used for this experiment. Soil samples were taken from a depth of 0-20 cm from the plant row and the interval between the rows. In studied soils, the total cadmium content varied between 1.28–2.61 μg.g -1 . The average cadmium content in mobile fractions is 0.4717 μg.g -1 (24.72 % from Cd(T)), in fractions with medium mobility is 1.2808 μg.g -1 (6.05 % from Cd(T)), and in fix fraction is 0.1561 μg.g -1 (7.98 % from Cd(T)), respectively. The experimental results indicates that in studied soils are not polluted with cadmium, but the risk potential is significant, due to the high weight of mobile fractions from total cadmium content. According to the obtained results, 24.72 % is directly accessible to the plants (major risk potential) and 67.05 % is indirectly accessible to the plants (latent risk potential). variază între 1,28–2,61 μg.g -1 . Conţinutul mediu de cadmiu în fracţiunile mobile este 0,4717 μg.g -1 (24,72 % din Cd(T)), în fracţiunile cu mobilitate medie este 1,2808 μg.g -1 (67,05 % din Cd(T)), iar în fracţiunile fixe este 0,1561 μg.g -1 (7,98 % din Cd(T)). Datele experimentale indică faptul că solurile studiate nu sunt poluate cu cadmiu, însă potenţialul de risc a cadmiului este semnificativ, datorită ponderii ridicate a fracţiunilor mobile: din conţinutul total de cadmiu, în medie, 24,72 % este direct accesibil plantelor (potenţial major de risc), iar 67,05 % este indirect accesibil plantelor (potenţial latent de risc). Cuvinte cheie: cadmiu, speciaţie chimică, culturi legumicole INTRODUCTION
    LUCRĂRI ŞTIINŢIFICE Vol. 53 NR. 2 SERIA HORTICULTURĂ; 05/2010
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    Laura Bulgariu, Dumitru Bulgariu, Matei Macoveanu
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    ABSTRACT: In this study, the removal of nickel(II) ions from aqueous solutions using peat moss sampled from Poiana Stampei (Romania) under different experimental conditions (different initial concentrations of metal ion and contact time) was investigated, in batch experiments. The kinetics of adsorption process was followed based on the amount of nickel(II) ions retained at various time intervals, and the experimental results were analyzed using three kinetic models: pseudo-first order, pseudo-second order and intra-particle diffusion models. The rate constants of adsorption process for all these kinetic models were calculated. Good correlation coefficients were obtained for the pseudo-second order kinetic model, showing that nickel(II) uptake process followed the pseudo-second order rate expression. Adsorption isotherms were expressed by Langmuir and Freundlich adsorption models. The Langmuir model fit the experimental data with high correlation coefficient and better than Freundlich model and the maximum adsorption capacity was obtained as 32.89 mg/g, at 65 C. The effect of temperature on nickel(II) adsorption process was also investigated and various thermodynamic parameters (G, H and S) have been calculated.
    Environmental engineering and management journal 05/2010; 9(5):667-674. · 1.26 Impact Factor
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    ABSTRACT: Our studies have focused the apparition and manifestation conditions of pedogeochemical segregation phenomena in case of soils from Copou - Iasi, Bacau and Bârlad (Romania) glass house, and the effects of this on the pedogeochemical and agrochemical characteristics of soils from glass houses cultivated with vegetables. The utilization of intensive cultivation technologies of vegetables in glass houses determined the degradation of morphological, physical and chemical characteristics of soils, by rapid evolution of salted processes (salinization and / or sodization), compaction, carbonatation, eluviation-illuviation, frangipane formation, stagnogleization, gleization etc. Under these conditions, at depth of 30-40 cm is formed a compact and impenetrable horizon - Ahok(x) horizon. In function of exploitation conditions and by the chemical-mineralogical characteristics of soils from glasshouses, the Ahok horizons can have frangipane properties, expressed more or less. These horizons determined a geochemical segregation of soils from glass houses: (i) superior horizons, above Ahok(x) horizon evolve in weak oxidative conditions, weak alkaline pH, higher salinity, humidity and temperature; (ii) inferior horizons, below Ahok(x) horizon evolve in weak reducing conditions weak acid pH, lower salinity, humidity and temperature. Concomitant with the development of Ahok(x) horizons, the rapid degradation of the properties of soils from glasshouses is observed. The aspects about the formation of frangipane horizon in soils from glasshouses are not yet sufficiently know. Whatever of the formation processes, the frangipane horizons determined a sever segregation in pedogeochemical evolution of soils from glass houses, with very important consequences on the agrochemical quality of these soils. The segregation effects are manifested in the differential dynamics of pedogeochemical processes from superior horizons (situated above the segregation horizon), in comparison with the inferior horizons (situated below the segregation horizon), and in global evolution of degradation processes of soils from glasshouses. The results obtained by as have shown that together by mobile forms of Si, Al and Fe, at the formation of segregation horizons (frangipane), an important role has the phosphorus (organic. in special) and the organic-mineral complexes, respectively. The experimental results indicate a strong accumulation tendency, at the level of pedogeochemical segregation horizons - Ahok(x) horizons, of fin grain-size fractions and of amorphous forms of mineral components. Also, was observed that in the composition of soil aggregates from frangipane horizon, and important weight have the smectites, amorphous iron oxides and oxy-hydroxides, amorphous silica and organic matter. The particularity of pedogeochemical segregation horizon (frangipane) from Copou-Iasi glass house is given by the relatively high contents of: (i) phosphorus - organic, in special, as inositol-phosphoric esters; (ii) fulvic acids; (iii) organic-mineral complexes - with special composition and structure, and (iv) poly-metha-phosphate associated with aluminosilicated gel - from chemical point of view has the characteristics of a pseudo-solid solution by (SiO2)x(Al2O3)y(PO4)z type, where x / z = (10-16) / 1, and y / z = (3-5) / 1); this appear as nodular depositions ( = 3-5 mm) covered with thin iron-carbonated crust. Acknowledgments The authors would like to acknowledge the financial support from Romanian Ministry of Education and Research (Project PNCDI 2-D5 no. 51-045/07).
    05/2010;
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    ABSTRACT: The experimental studies have been performed on soil samples from Copou-Iasi, Bacau and Bârlad (România) glass houses. We have specially follow the aspects concerning to the distribution of occurrence forms, composition and structure of mineral and organic components, and the genetic correlations between these in conditions of soils from glass houses, respectively. The results regarding the distribution tendencies on profile and the correlations between mineral and organic components of studied soils have been correlated with the results of microscopic, spectral (IR and Raman) and X-ray diffraction studies, and with the results of thermodynamic modelling of mineral equilibriums and dynamics of pedogenesis processes, in conditions of soils from glass houses. The utilization of intensive cultivation technologies of vegetables in glass houses determined the degradation of morphological, physical and chemical characteristics of soils, by fast evolution of salted processes (salinization and / or sodization), compaction, carbonatation, eluviation-illuviation, frangipane formation, stagnogleization, gleization, etc. Under these conditions, at depth of 30-40 cm is formed a compact and impenetrable horizon with frangipane characteristics, expresses more or less. The aspects about the formation of frangipane horizon in soils from glasshouses are not yet sufficiently know. Whatever of the formation processes, the frangipane horizons determined a sever segregation in pedo-geochemical evolution of soils from glasshouses, with very important consequences on the agrochemical quality of these soils. The soils from glass houses are characterized by a very large variability of mineralogy and chemistry, which are traduced by intense modifications of superior horizons, in many cases there are conditions for the apparition of new pedogenetic horizons through new-pedogenesis processes. Under these conditions the definition of some general characteristics of soils from glasshouses is very difficult. Practically, each type of soil from this category has distinct pedological and chemical-mineralogical characteristics, mostly determined by the nature of parental material and by the exploitation technologies. Concerning to the pedogeochemistry of soils from glasshouses have not yet been written summary studies, most existing papers from literature are in fact, case studies of particular situations. The deficit of information from this field, together with the ambiguity of pedogenetical characters of diagnostic, makes difficult the unitary characterization of soils from glasshouses. Characteristic for the soils from glass houses are the intense modifications of soil profile, the large variability of mineralogy and chemistry, and the salinization processes of superior horizons. From chemical point of view, the soils from glass houses is characterized by high values of bases saturation, accessible phosphorus and ration between humic and fulvic acids. From mineralogical point of view, the soils from glass houses studied is characterized by a high heterogeneity degree, both as contents, and as occurrence and distribution forms of mineral and organic components in profile. Predominant quantitatively are clay minerals and as variety, the crystalline forms are most abundant. As regard the clay minerals type, the kaolin and illites have dominant weights in comparison with smectites and the other mineral components. Acknowledgments The authors would like to acknowledge the financial support from Romanian Ministry of Education and Research (Project PNCDI 2-D5 no. 51045/07).
    05/2010;

Publication Stats

111 Citations
43.12 Total Impact Points

Institutions

  • 2008–2012
    • Academia Romana
      Bucureşti, Hunedoara, Romania
  • 2009–2011
    • Universitatea Alexandru Ioan Cuza
      • • Department of Geology
      • • Faculty of Geography and Geology
      Iaşi, Judetul Iasi, Romania
  • 2008–2009
    • Gheorghe Asachi Technical University of Iasi
      • Department of Environmental Engineering and Management
      Iaşi, Judetul Iasi, Romania