Wyniki wyszukiwania - Biblioteka Nauki

1

A Case Study in Cianjur West Java, Indonesia: A Correlation Humic and Fulvic Acids with Mineralogical Composition and Physico-Chemical Analysis Using Partial Least Square

100%

Mulyani O. , Joy B. , Kurnia D.

Journal of Ecological Engineering

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2021

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tom Vol. 22, nr 5

191--204

EN

Humic and fulvic acids are important materials for the health of the soil. This is related to the capability of humic and fulvic acids as chelating agent for pollutant in soil. The relationship between humic and fulvic acids with that of the soil properties is an important aspect to determine the characteristics of soil. Furthermore, production of humic and fulvic acids is a time-consuming process with several stages. Regarding this problem, the selection of sample size to study humic and fulvic acids is important. The relationship between the soil properties was analysed using the Partial Least Square (PLS) analysis, which is regarded as a solution to solve the analysis of complicated problems by offering a powerful approach. This study aimed to analyse the relationship between humic and fulvic acids, in terms of their mineral and physicochemical properties using the PLS method. The study was carried out in West Java, Indonesia. The results showed that the relationship between the chemical, physical, mineral contents with humic and fulvic acids, affected the negative and positive aspects of the relationship. Humic acids had a weak to good model category (0.269–0.940) with regards to the soil properties, and fulvic acids had a moderate model category (0.495–0.603) against all soil properties. Thus, the PLS method can solve a problem in study relationship between the soil properties with small sample and can help in understanding the soil characteristics in general.

2

Humic substances in the Baltic sediments. I. Isolation and preliminary characterization of humic substances

75%

Bojanowski R. , Pempkowiak J. , Kupryszewski G.

Oceanologia

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1977

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tom 07

3

Sulfur Cycling and the Sulfurization of Humic and Fulvic Acids in the Sediments of the rivers Rupel (Belgium) and Authie (northern France)

75%

Lojen S. , Čermelj B. , Wartel M.

Oceanological and Hydrobiological Studies

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2007

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tom Vol. 36, No.1

83-101

EN

Sulfur cycling and the sulfurization of humic and fulvic acids were compared in recent sediments from two western European rivers (the heavily polluted River Rupel in Belgium and the pristine River Authie in northern France). The sulfurization of humic and fulvic substrates occurs in both sediments irrespective of organic loading, but the sulfur species added to the organic substrate differ. Some sulphurization of fulvic acid by oxidized S was observed in the strongly reducing sediment of the River Rupel. Humic acids were sulfurized in the sediments of both rivers in these segments with prevailing reducing conditions by reduced S.

4

Effect of the soil type on the molecular structure, properties and conditions of occurrence of humous acids

75%

Ksiezopolska A.

Acta Agrophysica

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2000

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tom 35

EN

The study presented here concentrates on the characteristics of the humous compounds of humic and fulvic acid fractions of ß-humus, originating from the typologically differentiated soils (podzolic soil and chernozem). The soils were chosen so as to emphasize differences between chemical structure and degree of aromatic nucleus condensation in the humous acids isolated from them. It was found that the structure of the humous substances isolated from the podzolic soil is characterised by the lowest degree of condensation of the aromatic nucleus and the lowest polymerisation, while the humous acids from the chernozem are characterised by the highest degree of condensation of the aromatic nucleus and the strongest polymerisation.

5

Effect of fulvic acids on the process of water purification on filtration beds

63%

Anielak A. M. , Wojnicz M.

Archives of Environmental Protection

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2008

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tom Vol. 34, no. 2

25-34

EN

This study examined the process of filtering of infiltrated water containing exessive amounts of iron, manganese, and fulvic acids through two filtration beds-sand and zeolite-exhibiting catalytic properties. The fulvic accids, that were added to the filterd water were extracted from mud in Kołobrzeg. The zeolite bed was modified with manganese oxide using our own technoogy and required periodic regeneration using 0.3% KMnO_4 solution. Our study showed the fulvic acids' negative effect on the process of water purification. The zeolite bed reduces this effect and is more effective than the quartz sand bed.

PL

W pracy przebadano proces filtracji wody infiltracyjnej o nadmiernej ilości żelaza, manganu i kwasów fulwowych przez dwa złoża filtracyjne: piaskowe i zeołitowe wykazujące właściwości katalityczne. Kwasy fulwowe dodawane do filtrowanej wody ekstrahowano z kołobrzeskiej borowiny. Złoże zeolitowe było modyfikowane tlenkami manganu według własnej technologii i wymagało okresowej regeneracji 0,3% roztworem KMnO(. Badania wykazały ujemny wpływ kwasów fulwowych na procesy oczyszczania wody. Złoże zeolitowe pomimo trudnych warunków oczyszczania wody jest efektywniejsze od złoża kwarcowo-piaskowego.

6

Humic substances as by-product precursors generated during oxidation and disinfection – review of the literature

63%

Łomińska D.

Czasopismo Techniczne. Środowisko

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2016

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tom Y. 113, iss. 1-Ś

73--85

EN

Humic substances (HS), including soluble fulvic acids (FA), are commonly occurring pollutants, particularly in surface waters. HS were considered as substances, which are harmless for humans until now. They were mainly removed from the water because of turbidity, color and as a source of odor. HS in the process oxidation and disinfection are precursors of carcinogenic and mutagenic substances. Because of this, an analysis has been conducted, discussing their construction, properties and methods used of their disposal.

PL

Do powszechnie występujących zanieczyszczeń, szczególnie wód powierzchniowych należą substancje humusowe (SH), w tym rozpuszczalne kwasy fulwowe (KF). SH dotychczas uważane były za substancje zupełnie nieszkodliwe dla człowieka, a usuwane były z wody głównie ze względu na mętność, barwę oraz jako źródło przykrego zapachu. W procesach utleniania oraz dezynfekcji SH są prekursorami substancji kancerogennych oraz mutagennych. Ze względu na ten fakt przeprowadzono analizę studialną ich budowy oraz właściwości, a także stosowanych metod ich unieszkodliwiania.

7

Fungal biosolubilization of Polish lignite: the effect of substrate concentration

63%

Miszkiewicz H. , Marchut-Mikolajczyk O. , Mielcarz L. , Bielecki S.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

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2018

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tom 21

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nr 1

8

Effect of water regimes on sorptivity and organic matter humic components of soil

63%

Raut S. , Sahoo N. , Chakraborty H.

International Agrophysics

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2012

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tom 26

|

nr 1

EN

The aim of the study was to find the effect of water regimes on soil sorptivity and humic components of organic matter. Physicochemical parameters were also determined. Steady state cumulative infiltration was the highest (60-100 mm) in non-irrigated upland soil and the lowest (8-10 mm) in waterlogged soil. The highest sorptivity of 4.0-4.5mmmin-1/2 was found in nonirrigated upland soil and the lowest in seasonally waterlogged soil (1.0-1.5 mm min-1/2). Organic carbon content of all soils was low (<1%), EC values were also low (< 4 dS m-1). Saturated moisture was high in waterlogged soil. The non-irrigated upland soils had a higher fraction of fulvic acid (0.15-0.2%), due to which they were more capable of infiltration, whereas waterlogged soils had a greater fraction of insoluble humic acid (0.29-0.35%) and exhibited less cumulative infiltration. Sorptivity decreased as the clay content, pH, EC, porosity and humic acid content of the soil increased.

9

Wpływ składu gatunkowego drzewostanów na cechy jakościowe próchnicy glebowej tworzącej się na zrekultywowanym wyrobisku popiaskowym

63%

Woś B. , Pietrzykowski M. , Pająk M.

Quarterly of Environmental Engineering and Design

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2018

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tom Vol. 169 (49)

71--79

PL

W pracy omówiono wpływ składu gatunkowego drzewostanów na cechy jakościowe próchnicy glebowej tworzącej się na zrekultywowanym i zalesionym wyrobisku popiaskowym KP Szczakowa. Skład frakcyjny i właściwości optyczne badano na próbkach pobranych z wierzchnich poziomów inicjalnych gleb (0-5 cm) w litych drzewostanach: sosny zwyczajnej, modrzewia europejskiego, brzozy brodawkowatej i olszy czarnej. Badane próchnice charakteryzowały się przewagą węgla kwasów fulwowych (CKf) w stosunku do węgla kwasów huminowych (CKh) w składzie frakcyjnym puli węgla związanego (Cog) oraz stosunkowo niskim stosunkiem ekstynkcji kwasów huminowych (E465/E665). Czynnik gatunku zadziałał na właściwości próchnicy glebowej najsilniej w przypadku olszy czarnej. Gleby pod olszą charakteryzowały się większą zawartością węgla organicznego ogółem (Corg) i węgla związanego z kwasami huminowymi i fulwowymi (CKh+CKf) w porównaniu do pozostałych gatunków drzew. Potwierdza to duże zdolności fitomelioracyjne i przydatność do rekultywacji olszy czarnej.

EN

The paper presents influence of tree species composition on qualitative properties of humus in soil developed on reclaimed and afforested sand mine excavation KP Szczakowa. Fractional composition and optical properties were determined on 16 samples collected from top soil layer (0-5 cm) under different species: pure stands of Scots pine, European larch, common birch and black alder. The examined humus were generally characterized by predominance of fulvic acids (CKf) in relation to humic acids (CKh) and relatively low optical density of humic acid (E465/E665). Black alder in comparison to other species, most significantly modified the properties of soil humus. Soil under alder were characterized higher content of soil organic carbon (SOC) and carbon associated with humic and fulvic acid (CKh+CKf). The results confirm high phytomeliorative effect and usefulness of black alder to reclamation.

10

Humic substances and significance of their application – a review

63%

Kłeczek A. , Anielak A. M.

Technical Transactions

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2021

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tom Vol. 118, iss. 1

art. no. e2021012

EN

This paper is based on recent articles regarding applications of humic substances (HSs). HSs are natural organic materials, which have a number of potential applications. Furthermore, HSs are cheap, widespread and obtainable from bio-waste materials. HSs can be used as organic compound sorbents or in detoxification. They are applied as organic additives due to their positive effect on soil and plants, even under stress conditions. HSs reduce water consumption and minimise environmental problems. HSs are utilised for the remediation of multi-metal contaminated soils and as substitutes for synthetic washing agents. From an environmental engineering point of view, it is beneficial to remove HSs from municipal management, where they are undesirable (by-products of disinfection) and to utilise them where they are valuable. The aim of this article is to provide a greater insight into research about the applications of HSs.

11

The input of organic matter to the Baltic from the Vistula River

63%

Pempkowiak J. , Kopryszewski G.

Oceanologia

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1980

|

tom 12

12

Ocena działania ekstraktów z alg morskich oraz mieszaniny kwasów huminowych i fulwowych na kiełkowanie i początkowy wzrost rzepaku ozimego (Brassica napus L.)

63%

Matysiak S. , Kaczmarek S. , Kierzek R. , Kardasz P.

Journal of Research and Applications in Agricultural Engineering

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2010

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tom Vol. 55, nr 4

28-32

PL

W roku 2009, w Instytucie Ochrony Roślin przeprowadzono doświadczenia laboratoryjne i szklarniowe, których celem była ocena działania ekstraktów z alg morskich oraz kwasów huminowych i fulwowych na kiełkowanie i początkowy wzrost rzepaku ozimego. W doświadczeniach stosowano ekstrakty z alg morskich Ecklonia maxima (Kelpak SL), Saragassum spp. (Algaminoplant) oraz mieszaninę kwasów huminowych (12%) i fulwowych (6%)(Humiplant). Wykonano dwa typy doświadczeń. I typ doświadczeń: nasiona rzepaku moczono przez 24 h w wodnych roztworach preparatów Kelpak SL, Algaminoplant i Humiplant a następnie wysiewano do plastikowych wazonów i na części roślin wykonano zabiegi nalistne badanymi preparatami w fazie BBCH 12-13. II typ doświadczeń: nasiona wysiewano bez uprzedniego moczenia nasion, a następnie w fazach rozwojowych BBCH 12-13 i BBCH14-16 wykonano zabiegi nalistne badanymi preparatami. W doświadczeniach oceniano: zdolność kiełkowania nasion rzepaku, poziom chlorofilu w liściach,, masę pędów oraz masę korzeni roślin.

EN

Glasshouse experiments were carried out in Institute of Plant Protection in Poznań. The aim of these trials was to determine an influence of seaweed extracts (Ecklonia maxima - Kelpak SL and Saragassum spp - Algaminoplant) and humic (12%) and fulvic (6%) acids mixture (Humiplant) on early growth and development of winter rape depending on method of application. Trials involved soaking of seeds in aquaous solution of seaweed extracts and humic substances, soaking seeds and than foliar application and finally two foliar applications. Results shows different action of tested substances on winter oilseed rape depending on application method. Seaweed extracts stronger induced seed germination than humic substances. Joint seed and foliar application and double foliar application promote shoots and roots growth. Seaweeds and humic acids were not influenced chlorophyll content.

13

Peculiarities of the chemical composition and the molecular structure of peat humic substances

63%

Bambalov N. , Smychnik T. , Maryganova V. , Strigutsky V. , Dite M.

Acta Agrophysica

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2000

|

tom 26

EN

The main result of the investigation concerning pecularities of peat humic substances ( humic and fulvic acids)with the use of CNMR spectroscopy, thermal analysis, pyrolysis mass- spectrometry, oxidation destruction, gel- chromatography and electronic paramagnetic resonance are shown in this paper.

14

The rate of microbial decomposition of soil humic compounds: the effect of acid rain induced Al depletion. Running head: Acid rain and the decomposition of humic substances

63%

Grodzinska-Jurczak M. , Mulder J.

Polish Journal of Environmental Studies

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1997

|

tom 06

|

nr 5

EN

The effect of aluminum complexation on the net decomposition rate of purified humic acid (HA) and fulvic acid (FA), extracted from a podzol B horizon in the Netherlands, were studied at room temperature (20°C). Net decomposition rates were determined from C02 evolution from samples as measured by gas-chromatography. Increasing aluminum additions significantly reduced the decomposition rate of HA, of FA ,and of organic matter in podzol B horizons, whereas pH had no notable effect on decompostion rates. Results indicate that at the current high depletion rates of organically-bound soil Al, due to acid rain, the decomposition of soil humic compounds may increase significantly. This may have serious consequences for the ecologically relevant pool of humic compounds in forest soils.

15

Sulfur cycling and the sulfurization of humic and fulvic acids in the sediments of the rivers Rupel [Belgium] and Authie [Northern France]

63%

Lojen S. , Cermelj B. , Wartel M.

Oceanological and Hydrobiological Studies

|

2007

|

tom 36

|

nr 1

16

Metabolic activity of heterotrophic bacteria in the presence of humic substances and their fractions

63%

Donderski W. , Burkowska A.

|

nr 4

EN

Metabolic activity of heterotrophic bacteria isolated from lakes Stęgwica, Jeziorak and Jasne were investigated. A humic substances of commercial preparation by Aldrich-Chemie, as well as natural humic substances, fulvic and humin acids isolated from lake Stegwica were used as a source of energy. The results indicate that 70-80% of bacteria strains are able to utilise the humus matter. The greatest metabolic activity was recorded in bacteria which were supported by natural humic substances isolated from lake Stęgwica; whereas the lowest was noted in the presence of humin acids.

17

Pre-treatment of fulvic acid plays a stimulant role in protection of soybean (Glycine max L.) leaves against heat and salt stress

51%

Dinler B. S. , Gunduzer E. , Tekinay T.

Acta Biologica Cracoviensia. Series Botanica

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2016

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tom 58

|

nr 1

EN

The purpose of this study was to illuminate the effects of fulvic acid in plants’ stress signaling pathway. 2.0 mg/l fulvic acid was sprayed on soybean leaves for 3 days at 12 h intervals, followed by treatment of 150 mM NaCl or exposed to heat stress at 35°C for 2 h over 2 days. Pre-treatment with fulvic acid increased the relative water content (RWC), antioxidant enzyme, isoenzyme activities (SOD, APX, GST), as well as alleviated the stress-induced oxidative damage by decreasing the levels of hydrogen peroxide (H2O2) and malondialdehyde (MDA). In addition, the application of fulvic acid under salt stress induced rubisco expression only at 12 h, while it induced the expression of cytochrome c oxidase at 6 h and 12 h. On the other hand, fulvic acid under heat stress induced significant expression of both rubisco and cytochrome c oxidase at 6 h and 12 h. However, under high salinity conditions, fulvic acid suppressed the transcript levels of Hsp70, while it induced increases in Hsp70 levels under heat treatment at 6 h. As a result, in this study, fulvic acid played the role of a regulator and stimulant in stress response of soybean leaves.

18

Badania preparatow borowinowych z wykorzystaniem spektrofotometrii absorpcyjnej UV-VIS

51%

Drobnik M. , Latour T. , Krawczyk B.

Roczniki Państwowego Zakładu Higieny

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2007

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tom 58

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nr 4

657-666

19

Resources and fractional composition of humus in soils of convent gardens of Cracow

51%

Gasiorek M. , Niemyska-Lukaszuk J.

Polish Journal of Soil Science

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2008

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tom 41

|

nr 1

1-11

EN

Investigations were conducted to determine the impact of urban environment and cultivation on the content and fractional composition of humus in anthropogenically transformed soils of selected convent gardens in Cracow. Convent gardens in Cracow, mostly utilised as vegetable gardens, are located in densely built up city areas. On the basis of conducted research, it was established that hortisols of studied gardens are characterised by a high abundance of good quality humus. Humines and humic acids prevail over fulvic acids in humus compounds of these soils. Value of C:N ratio evidences advanced mineralisation of organic matter and good biological activity of soil.

PL

Celem przeprowadzonych badań było określenie wpływu środowiska miejskiego i uprawy na zawartość i skład frakcyjny próchnicy w przekształconych antropogenicznie glebach wybranych ogrodów klasztornych Krakowa. Ogrody klasztorne w Krakowie zazwyczaj użytkowane jako warzywniki, znajdują się wśród gęstej zabudowy miejskiej. Na podstawie przeprowadzonych badań można stwierdzić, że hortisole badanych ogrodów charakteryzują się dużą zasobnością w próchnicę i dobrą jej jakością. W połączeniach próchnicznych tych gleb dominują huminy oraz kwasy huminowe nad fulwowymi. Wartość stosunku C:N świadczy o zaawansowanej mineralizacji materii organicznej i o dobrej aktywności biologicznej gleby.

20

Clearing Problems of Water Polluted by Organic Compounds of Natural and Anthropogenic Origin

51%

Demchenko O. , Zheltonozhskaya T. , Kutsevol N. , Syromyatnikov V. , Rakovich I. , Romankevich O.

Chemia i Inżynieria Ekologiczna

|

2001

|

tom Vol. 8, nr 5

463-478

EN

The interaction of novel high effective flocculants - the graft copolymers of poly(acrylamide) and poly(vinyl alcohol), (PV A-PAAN), featuring different molecular structures with toxic components such as phenol, as well as humic (HA) and fulvic (FA) acids commonly found in natural water, bas been studied. Phenol has appeared to only weakly interact with flocculants and is an equilibrium process. This is accompanied by compacting of copolymer macromolecules. The natural humus acids actively interact with PV A-P AAN and compact particles of intermolecular polycomplexes are being formed. The selective binding of the flocculant with the highest molecular fractions of HA and FA bas been revealed. In the case of FA the reaction results in decomposition of the macromolecular associates. The law molecular fragments of both acids almost do not combine with the flocculant. II was found that phenol practically does not impair the efficiency of PV A-P AAN flocculants, whereas both HA and F A somewhat reduce its clearing ability. This has been proved in a model experiment as well as in a real natural water clearing process carried out in waterworks. The efficiency of PV A-PAAN has been shown to be higher than that of a widely known Magnafloc LT-27 flocculant of Allied Colloids.

PL

Zbadano oddziaływanie nowych efektywnych flokulantów - szczepionych kopolimerów poliakrylamidu i alkoholu poliwinylowego (PV A-P AAN) o różnej budowie z rozpowszechnionym toksycznym związkiem fenolem, a również z huminowymi (HA) i fulwowymi kwasami (FA) - składnikami wód naturalnych, które powodują ich zabarwienie. Stwierdzono, że oddziaływanie fenolu z flokulantami jest słabe i ma charakter równowagowy. Zachodzi przy tym kompaktyzacja makromolekuł polimeru. Występujące w przyrodzie kwasy huminowe aktywnie oddziałują z PV A-PAAN, tworząc kompaktowe połączenia między molekułami polikompleksów. Stwierdzono, że istnieje wybiórcze wiązanie flokulantu z najbardziej makromolekularnymi trakcjami HA i FA. Odbywa się ono według mechanizmu kooperatywnego i w przypadku FA powoduje rozpad makromolekularych asocjatów. Małomolekularne ftagmenty obu kwasów zupełnie nie reagują z flokulantem. Stwierdzono, że obecność fenolu praktycznie nie pogarsza, a HA oraz FA nieco poprawia klarującą zdolność flokulantów PV A-P AAN zarówno w eksperymentach modelowych, jak i podczas klarowania wody w wodociągach komunalnych. Stwierdzono, że efektywność działania PV A-P AAN jest większa niż znanego flokulantu Magnafloc L T -27 firmy AlIied Colloids.