Wyniki wyszukiwania

1

Photooxidation: a decolorization procedure and a pre-treatment step for biodegradation of reactive azo dye

100%

Genc N., Can-Dogan E.

Polish Journal of Environmental Studies

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2006

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tom 15

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nr 1

In this study, by using a different variety of TiO₂ catalyst, photocatalytic oxidation of reactive azo dye used in textile industry and an improvement in the biodegradability of the dye by photocatalytic oxidation are investigated. It was found that the addition of TiO₂ in the photooxidation of dye increased color removal by 30.84 %, the addition of H₂O₂ in the presence of TiO₂ also increased color removal by 33.98 %. The study also examined the effect of TiO₂ obtained from different companies in color removal and it was found that TiO₂ obtained from Merck and Degussa displayed similar effectiveness in color removal. It was further found that, depending on the chemical composition of dye used, the ions, SO₄²⁻, Cl⁻ and NH₄⁺ emerged and that NH₄⁺ was oxidized to NO₂⁻. As a result of the 42 h long photocatalytic oxidation, a COD removal of about 85.3 % was achieved. In this study, Langmuir-Hinshelwood kinetic constants were examined and it was found that k=0.971 mg/L min and K=0.176 L/mg. By analyzing respirometric measures of raw and photocatalyzed dyes, it was determined that photocatalyzed dye had higher biodegradability than raw dye. Improvement in biodegradation was proven by the rise of BOD₅/COD ratio from 0.06 to 0.29.

2

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Research of the biodegradability of degradable/biodegradable plastic material in various types of environments

86%

Adamcova D., Radziemska M., Fronczyk J., Zloch J., Vaverkova M. D.

Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska

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2017

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tom 26

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nr 1[75]

Research of the biodegradability of degradable/biodegradable plastic material in various types of environments. Research was carried out in order to assess biodegradability of degradable/biodegradable materials made of HDPE and mixed with totally degradable plastic additive (TDPA additive) or made of polyethylene (PE) with the addition of pro-oxidant additive (d2w additive), advertised as 100% degradable or certified as compostable within various types of environments. Research conditions were: (i) controlled composting environment – laboratory-scale, (ii) real composting conditions – domestic compost bin, (iii) real composting conditions – industrial composting plant and (iv) landfill conditions. The results demonstrate that the materials made of HDPE and mixed with totally degradable plastic additive (TDPA additive) or made of polyethylene (PE) with the addition of pro- -oxidant additive (d2w additive) or advertised as 100% degradable did not biodegrade in any of the above-described conditions and remained completely intact at the end of the tests. Biodegradation of the certified compostable plastic bags proceeded very well in laboratory-scale conditions and in real composting conditions – industrial composting plant, however, these materials did not biodegrade in real composting conditions – domestic compost bin and landfill conditions.

3

The screening of microorganisms capable of methyl tert-butyl ether (MTBE) biodegradation

86%

Wieczorek A., Przybulewska K., Karpowicz K., Nowak M. J.

Polish Journal of Microbiology

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2013

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tom 62

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nr 2

As a result of examinations carried out, 16 strains of microorganisms able to grow on mineral media with methyl tert-butyl ether as the sole source of carbon and energy were isolated. Bacteria prevailed among the isolated microorganisms . The growth of microorganisms under laboratory conditions was long and accompanied by low biomass increase. Under the conditions of the experiment, the isolated microorganisms did not show any quantitatively measurable biodegradability of methyl tert-butyl ether (MTBE) under aerobic conditions. This requires far-reaching caution with respect to trading in MTBE-modified petrols in order to protect the natural environment in Poland against contamination with that hard-to-biodegrade substance.

4

Hazard identification for 3,5-dichlorophenol in the aquatic environment

86%

Zagorc-Koncan J., Gotvajn A. Z., Tisler T.

Cellular and Molecular Biology Letters

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2002

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tom 07

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nr 2

The risk assessment of substances in various environmental compartments is essential for their proper, safe and environmentally friendly production, handling, use and final deposition or destruction. Hazard identification is an important part of risk assessment. The aim of our research was to present a methodology for the hazard identification of substances dangerous to the aquatic environment according to the 93/21/EEC Directive relating to the classification, packaging and labelling of dangerous substances, from the adverse effect assessment of chemicals in European Union. A battery of toxicity tests and biodegradability studies with 3,5-dichlorophenol were performed. The substance was classified as toxic to aquatic organisms with possible long-term adverse effects. The presented methodology assures reliable data for the classification and labelling of substances according to their harmful effect on aquatic biota, suitable for the competent authorities at the national and EU level.

5

Microwave-assisted synthesis and characterization of novel chitosan-based biomaterials for pelvic organ prolapse treatment

72%

Stangel-Wojcikiewicz K., Piatkowski M., Radwan-Praglowska J., Janus L., Matysek D., Majka M., Kot M., Amrom D., Wrobel A.

Journal of Physiology and Pharmacology

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2019

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tom 70

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nr 3

6

Biodegradability of thermoplastic starch (TPS)

72%

Combrzynski M.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2012

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tom 12

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nr 1

7

The biodegradability of xylene in sea water

72%

Miller H., Rutkowska M.

Ochrona Środowiska i Zasobów Naturalnych

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2007

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nr 33

45-49

8

Selected mechanical properties of starch films

72%

Combrzynski M., Moscicki L., Rejak A., Wojtowicz A., Oniszczuk T.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2013

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tom 13

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nr 2

9

Bioconversion of novel and renewable agro-industry by-products into a biodegradable poly(3-hydroxybutyrate) by marine Bacillus megaterium UMTKB-1 strain

72%

Yatim A. F. M., Syafiq I. M., Huong K. H., Amirul A.-A. A., Effendy A. W. M., Bhubalan K.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2017

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tom 98

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nr 2

10

Characterization and biological treatability of edible oil wastewaters

72%

Aslan S., Alyuz B., Bozkurt Z., Bakaoglu M.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 4

533-538

This study investigates the conventional characterization and biological treatability of two different wastewaters that originated from corn oil and sunflower oil refining processes. Our aims for characterization of wastewaters included: total and soluble chemical oxygen demand, total and soluble biological oxygen demand, suspended solid, oil and grease, pH, total kjeldahl nitrogen, ammonia nitrogen, total phosphor, phosphate, color and sulfate analyses. In corn oil wastewaters, total COD is portioned as 80% soluble COD, 20% particular COD, 3.4% total soluble inert COD, 0.5% total particular inert COD, whereas in sunflower oil wastewaters soluble COD, particular COD, total soluble inert COD, total particular inert COD are found as 81.7%, 18.3%, 1.9%, and 5.1%, respectively. In our characterization studies, BOD5/COD ratio were 0.15 and 0.2 for corn oil and sunflower oil wastewaters, respectively. These results indicate that wastewaters are not suitable for biological treatment. But investigation of COD fractions has pointed out that wastewaters contain mostly biodegradable organic substances.

11

Influence of dissolved organic nitrogen on surface waters

72%

Czerwionka K.

Oceanologia

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2016

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tom 58

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nr 1

12

Testing the biodegradability and biodegradation rates of degradable/biodegradable plastics within simulated environment

72%

Vaverkova M., Kotovicova J., Adamcova D.

Infrastruktura i Ekologia Terenów Wiejskich

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2011

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nr 12

The objective of this study was to evaluate and compare the biodegradability and biodegradation rates of ‘single-use' plastic bags available on the market and labeled as degradable/biodegradable. The test was carried out under both aerobic and anaerobic conditions. The project length was 20 months. The biodegradation results in the laboratory conditions demonstrate that none of the degradable/ biodegradable bags showed visual changes and/or were broken into pieces and none of them experienced any disintegration or degradation. The cellulose filter paper (CFP) completely degraded after 10 days in the aerobic conditions and after 5 month in the anaerobic conditions, implying that the conditions required for biodegradation to occur in a sampling environment were present.

13

Limits of physicochemical treatment of wastewater in the vegetable oil refining industry

72%

Chipasa K. B.

Polish Journal of Environmental Studies

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2001

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tom 10

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nr 3

This paper presents results of investigations on physicochemical treatment of vegetable oil refinery wastewater (VORW), namely acid and technological wastewater. The study has shown that VORW has a varying high pollution load (organic matter, sulfates, phosphates and chlorides) and the removal of these pollutants from acid wastewater was more effective than that from technological wastewater; the removal of suspended solids and solvent extractables was relatively higher than that of BOD5 and COD. The use of calcium chloride and alum as coagulants increases the concentration of chlorides in the final treated wastewater. The results also showed that physicochemical treatment processes significantly influence the relative biodegradability of the organic matter in the wastewater.

14

Sunlight-induced changes of biodegradability and absorbance of organic matter dissolved in the Gulf of Gdansk water

72%

Grzybowski W.

Polskie Archiwum Hydrobiologii

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1999

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tom 46

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nr 2

15

Influence of modified collagen on parameters of adhesive mixtures. Part: I. Influence of collagen modifications on adhesion, biodegradability and formaldehyde emission

58%

Matyasovsky J., Jurkovic P., Duchovic P., Novak I., Siarnik P.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2013

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tom 83

16

Problems with the biodegrability assessment of biomass materials for combustion

58%

Walkowiak M., Witczak M., Cichy W.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2013

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tom 84

17

Spectral and molecular characteristics of fractions isolated from biodegraded polyethylene containing lignin derived from chemical wood treatment

58%

Kosikova B., Kacik F., Alexy P., Mikulasova M.

Roczniki Akademii Rolniczej w Poznaniu. Technologia Drewna

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2001

|

tom 35

18

Biodegradability of polyethylene starch blends in sea water

58%

Rutkowska M., Heimowska A., Krasowska K., Janik H.

Polish Journal of Environmental Studies

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2002

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tom 11

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nr 3

The subject of this work is the degradation of pure polyethylene and modified polyethylene films containing 5% and 8% starch, and polyethylene with pro-degradant additives in the form of "master batch" in amounts of 20%. The degradation of polymer samples was studied under marine exposure conditions in the Baltic Sea. The experiment was also performed in laboratory at the ambient temperature, in a liquid medium containing sea water with sodium azide (NaN3) to evaluate the resistance of polyethylene against hydrolysis. The incubation of polyethylene samples took 20 months. The characteristic parameters of environment were measured during the period of degradation and their influence on degradation of polyethylene was discussed. Changes in weight, tensile strength and morphology of polymer samples were tested during the experiment performed.

19

Zalety i wady drewna jako materiału w budownictwie

44%

Hikiert M. A.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

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2017

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tom 58

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nr 3-4

20

Biodegradowalne opakowania z polilaktydu [PLA] do owocow i warzyw

30%

Zakowska H.

Przemysł Fermentacyjny i Owocowo-Warzywny

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2006

|

tom 50

|

nr 07-08

34

From an environmental point of view biodegradable polymers offer an interesting alternative to classical plastics. Example of polymers completely made from renewable resources, are polyesters such as polylactide (PLA). Its properties are especially suitable for food packaging. PLA can be used in a wide range of packaging applications for example fruit and vegetable. The novel polymer is forging roles in thermoformed trays and containers as well as shopping bags and labels. It is convenient to processes on conventional extrusion and thermoforming equipment. PLA is compostable under industrial conditionsall of packaging is certified in according to the standard EN13432:2000 by DIN CERTCO and qualify to use IBAW compostability logo. In additioni, increased efficiencies in the manufacturing process and the rising prices of petrol oil have led to the cost of PIA becoming comparable to other conventional plastic materials.

Ograniczanie wyników

Photooxidation: a decolorization procedure and a pre-treatment step for biodegradation of reactive azo dye

Research of the biodegradability of degradable/biodegradable plastic material in various types of environments

The screening of microorganisms capable of methyl tert-butyl ether (MTBE) biodegradation

Hazard identification for 3,5-dichlorophenol in the aquatic environment

Microwave-assisted synthesis and characterization of novel chitosan-based biomaterials for pelvic organ prolapse treatment

Biodegradability of thermoplastic starch (TPS)

The biodegradability of xylene in sea water

Selected mechanical properties of starch films

Bioconversion of novel and renewable agro-industry by-products into a biodegradable poly(3-hydroxybutyrate) by marine Bacillus megaterium UMTKB-1 strain

Characterization and biological treatability of edible oil wastewaters

Influence of dissolved organic nitrogen on surface waters

Testing the biodegradability and biodegradation rates of degradable/biodegradable plastics within simulated environment

Limits of physicochemical treatment of wastewater in the vegetable oil refining industry

Sunlight-induced changes of biodegradability and absorbance of organic matter dissolved in the Gulf of Gdansk water

Influence of modified collagen on parameters of adhesive mixtures. Part: I. Influence of collagen modifications on adhesion, biodegradability and formaldehyde emission

Problems with the biodegrability assessment of biomass materials for combustion

Spectral and molecular characteristics of fractions isolated from biodegraded polyethylene containing lignin derived from chemical wood treatment

Biodegradability of polyethylene starch blends in sea water

Zalety i wady drewna jako materiału w budownictwie

Biodegradowalne opakowania z polilaktydu [PLA] do owocow i warzyw