scholarly journals CHARACTERISTICS OF CHEMICAL COMPOSITION OF UPPER HORIZONS OF SOILS OF ROADSIDE PHYTOCENOSIS

2018 ◽  
pp. 95-100
Author(s):  
Gulsem Salimovna Alimova ◽  
Alena Yurievna Tokareva ◽  
Elena Ivanovna Popova
Keyword(s):  
Soil Salinization ◽  
Phosphorus Compounds ◽  
Biogenic Elements ◽  
Nitrate Content ◽  
Mobile Phosphorus ◽  
Nitrite Nitrogen ◽  
Synanthropic Species ◽  
Low Degree ◽  
Chloride Sulfate ◽  
Synanthropization Index

Geobotanical descriptions of roadside phytocenoses of south of the Tyumen region were made within the boundaries of five administrative districts: Uporovsky, Zavodoukovsky, Yalutorovskiy, Yarkovsky, Tobolsk. Soil cuts were taken at each site and their morphological and chemical characteristics were determined. The biogenic composition (nitrite nitrogen, nitrates, mobile phosphorus compounds, exchange ammonium), the degree and type of soil salinization have been determined. The investigated soils, in accordance with the taxonomy of A. G. Dyukarev, belong to sod podzolic and podzolic types, typical subtype, ordinary genus. As for degree of salinity, soils are non-saline. Type of salinity is chloride-sulfate, sulfate. The reaction of the aqueous extract medium is weakly acidic. Biogenic elements determined during the study are concentrated to a greater extent in the upper horizons of the soil and are characterized by a low degree of availability of available phosphates in all areas from 28 to 50 mg/kg (movable forms). The nitrate content in all areas is in the same range, from 0.2 to 0.8 mg/kg. Distribution of ammonium metabolic (4.5-23.6 mg/kg), nitrates vary from 0.2 to 0.8 mg/kg. The content of nitrite nitrogen in all soil samples is minimal: less than 0.037 mg/kg of soil. The investigated phytocenoses are characterized by poor and stable floral composition. Most of the total projective cover of studied phytocenoses account for synanthropic species. Synanthropization index of the flora of the studied phytocenoses lies within 43-64%.

scholarly journals An Exploration of Seaweed Polysaccharides Stimulating Denitrifying Bacteria for Safer Nitrate Removal

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3390
Author(s):  
Hui Zhang ◽  
Lin Song ◽  
Xiaolin Chen ◽  
Pengcheng Li
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Nitrate Removal ◽  
Denitrifying Bacteria ◽  
Soil Salinization ◽  
Nitrate Content ◽  
Weak Efficiency ◽  
N Accumulation ◽  
N Removal ◽  
Intensively Managed

Excessive use of nitrogen fertilizer in intensively managed agriculture has resulted in abundant accumulation of nitrate in soil, which limits agriculture sustainability. How to reduce nitrate content is the key to alleviate secondary soil salinization. However, the microorganisms used in soil remediation cause some problems such as weak efficiency and short survival time. In this study, seaweed polysaccharides were used as stimulant to promote the rapid growth and safer nitrate removal of denitrifying bacteria. Firstly, the growth rate and NO3−-N removal capacity of three kinds of denitrifying bacteria, Bacillus subtilis (BS), Pseudomonas stutzeri (PS) and Pseudomonas putida (PP), were compared. The results showed that Bacillus subtilis (BS) had a faster growth rate and stronger nitrate removal ability. We then studied the effects of Enteromorpha linza polysaccharides (EP), carrageenan (CA), and sodium alginate (AL) on growth and denitrification performance of Bacillus subtilis (BS). The results showed that seaweed polysaccharides obviously promoted the growth of Bacillus subtilis (BS), and accelerated the reduction of NO3−-N. More importantly, the increased NH4+-N content could avoid excessive loss of nitrogen, and less NO2−-N accumulation could avoid toxic effects on plants. This new strategy of using denitrifying bacteria for safely remediating secondary soil salinization has a great significance.

scholarly journals WASTEWATER TREATMENT WITH BIOCONVERSION FOR MOTOR FUEL PRODUCTION

ScienceRise ◽  
2020 ◽  
pp. 66-72
Author(s):  
Sergii Shamanskyi ◽  
Sergii Boichenko ◽  
Lesia Pavliukh
Keyword(s):  
Wastewater Treatment ◽  
Culture Medium ◽  
Motor Fuel ◽  
Biofuel Production ◽  
Phosphorus Compounds ◽  
Biogenic Elements ◽  
Fuel Production ◽  
Nitrogen And Phosphorus ◽  
Phosphorous Compounds ◽  
Technological Product

The object of research: the process of wastewater treatment using bioconversion for subsequent motor fuel production. Investigated problem: improving the efficiency of bioconversion process for biofuel production with simultaneous wastewater treatment by removing nitrogen and phosphorous compounds. The main scientific results: providing the possibility of biofuel production with energy and economic inefficiency. It is done by combining the process of motor biofuel production with the process of treating wastewater from biogenic elements makes it perspective for commercial use. Traditional technology for the production of motor biofuels from microalgae includes cultivation, harvesting, dehydration and drying of biomass, extraction of oils from them and subsequent production of methyl esters and glycerol. Such technology is often not economically effective. It requires significant amount of energy for carrying out all necessary processes. In addition, it requires significant expenditures of water and nutrients. The use of nutrient-rich wastewater as a culture medium for the cultivation of microalgae allows not only to reduce costs, but also to purify wastewater from nitrogen and phosphorus compounds, which makes this process economically effective. The area of practical use of the research results: Sewage and gray water treatment plants. Industrial and agricultural effluents treatment plants. Different types of enterprises, which have wastewater enriched with nitrogen and phosphorous compounds. Innovative technological product: The technology of microalgae cultivation using wastewater as a culture medium. The technology allows effectively purifying used wastewaters from nitrogen and phosphorous compounds with no waste at the end. Scope of the innovative technological product: Improved technology of motor biofuel production with simultaneous wastewater purification, which is economically effective and environmentally safe.

scholarly journals DYNAMICS OF THE CONTENT OF PHOSPHORUS MOBILE COMPOUNDS IN SOILS OF THE TRANSCARPATHIAN REGION

2021 ◽  
Vol 29 ◽  
pp. 154-159
Author(s):  
А. FANDALYUK ◽  
I. KOMAR ◽  
A. CHOPAK
Keyword(s):  
Soil Acidity ◽  
Phosphorus Compounds ◽  
Mobile Phosphorus

The distribution of soils by the content of mobile phosphorus compounds in the soils of the Transcarpathian region according to the results of ecological and agrochemical survey conducted during the VIII - XI rounds (2001 - 2020) is highlighted. Keywords: soil, ecological and agrochemical survey, mobile phosphorus compounds, soil acidity.

scholarly journals Evaluation of the potential of commercial use of microalgae in the world and in Ukraine

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lesia Pavliukh ◽  
Sergii Shamanskyi ◽  
Sergii Boichenko ◽  
Artur Jaworski
Keyword(s):  
Experimental Study ◽  
Wastewater Treatment ◽  
Experimental Studies ◽  
Biofuel Production ◽  
Phosphorus Compounds ◽  
Commercial Application ◽  
Biogenic Elements ◽  
Content Type ◽  
Commercial Use ◽  
The Impact

Purpose This paper aims to evaluate of the microalgae potential for commercial application, in particular to conduct experimental study of biogenic compounds removal from sewage waters by microalgae, and to calculate economical benefits from biofertizers and biofuel production. Design/methodology/approach Experimental study in the concentration change of nitrogen and phosphorus compounds in the cultivation of Chlorella Vulgaris microalgae in various types of sewage water was carried out. Findings The efficiency wastewater treatment by microalgae was confirmed. The economic benefit from the biomass utilization as biofuel production was calculated. Practical implications Implementation of wastewater treatment technology with biomass recycling for biofuel and biofertilizers production will minimize the impact on the environment. Originality/value As a results of experimental studies, the ability of microalgae to reduce biogenic elements in wastewater was confirmed. Microalgae can be used both for wastewater treatment to biogenic elements removal, such as phosphorous and nitrogen compounds, and biofuel, biofertilizers production. Prospects of the commercial use of microalgae are obvious. They are specially adapted to an environment dominated by viscous forces.

scholarly journals The change of the main agrochemical indicators of the sod-podzolic soil for the submission of the municipal wasterwater under the artichoke

2021 ◽  
Vol 12 (3) ◽  
pp. 66-75
Author(s):  
V. I. Lopushniak ◽  
◽  
G. M. Hrytsuliak ◽  
Keyword(s):  
Sewage Sludge ◽  
Podzolic Soil ◽  
Soil Layer ◽  
Fertilizer Application ◽  
Mineral Nitrogen ◽  
Phosphorus Compounds ◽  
Nitrogen Compounds ◽  
Concentration Coefficient ◽  
Mobile Phosphorus ◽  
Control Variant

The studies have shown that the introduction of sewage sludge and compost made on its basis, significantly affects the change in the agrochemical parameters of the sod-medium-podzolic soil, increasing the content of the alkaline hydrolysed nitrogen compounds by 2.2 – 13.4 mg/kg of the soil compared to with control and determining the size of its values at the level of 51.2 – 56.5 mg/kg of the soil in the upper (0 – 20 cm) and 27.9 – 31.6 mg/kg – in the lower (20 – 40 cm) soil layer. The content of the ammonium nitrogen compounds in the variants with the fertilizer application fluctuated in a small range of the values (16 – 21 mg/kg of soil) and increases under the influence of increasing fertilizer doses. Together with the change in the content of the nitrate nitrogen, this contributed to an increase in the content of the mineral nitrogen compounds in the soil in the range of 18.5 – 23.4 mg/kg of the soil in arable (0 – 20 cm) and 19.8 – 21.9 mg/kg of the soil – in subsoil (20 – 40 cm) layers, which by 1.7 – 2.2 mg/kg of the soil exceeded the control variant. The highest indicators of the mineral nitrogen compounds were recorded in the variant where the highest dose of the sewage sludge was applied – 40 t/ha and mineral fertilizers (N10P14K58). Despite the wide range of the nitrogen content values of the alkaline hydrolysed compounds and mineral nitrogen compounds, their ratio remained stable and was 2.3 – 2.6 in the upper and 1.3 – 1.5 in the lower (20 – 40 cm) soil layer, and also decreased with the increasing dose of the fertilizer. That is, this indicator did not change significantly depending on the fertilizer application rate. The content of the mobile phosphorus compounds in the variants with the use of the fertilizers fluctuated in the range of the values (77.5 – 98.5 mg/kg of the soil) and increased under the influence of the introduction of the sewage sludge and compost based on it, which is 14.6 – 35.6 mg/kg of the soil was dominated by the control indicators. The highest rates of the mobile phosphorus compounds were recorded in the variant where the sewage sludge were applied – 40 t/ha and N10P14K58. The introduction of the sewage sludge at a rate of 20 – 40 t/ha contributed to an increase in the content of the potassium metabolites at the level of 89.3 – 97.2 mg/kg of the soil in the upper (0 – 20 cm) and 83.1 – 93.4 mg/kg – in the lower (20 – 40 cm) layer, which exceeded the indicators of the control variant by more than 42.1 mg/kg of the soil. The content of the potassium metabolic compounds increased somewhat less with the introduction of the composts based on the sewage sludge and straw. The results of the correlation-regression analysis indicate that the phosphorus concentration coefficient in the soil largely depends on the content of its mobile compounds and is marked by the coefficient of the determination R2 = 0.70. The potassium concentration coefficient is closely (R2 = 0.91) correlated with the content of its metabolic compounds in the soil.

scholarly journals On the issue of the feasibility of using modern technologies for biological phosphorus removal in low-capacity wastewater treatment plants

2021 ◽  
Vol 937 (4) ◽  
pp. 042054
Author(s):  
Ivan Kulik ◽  
Elena Shuckaya
Keyword(s):  
Wastewater Treatment ◽  
Phosphorus Removal ◽  
Wastewater Treatment Plants ◽  
Phosphorus Compounds ◽  
Biogenic Elements ◽  
Biological Phosphorus Removal ◽  
Basic Principles ◽  
Biological Removal ◽  
Treatment Facilities ◽  
Biological Phosphorus

Abstract The article discusses the basic principles of wastewater treatment from biogenic elements, provides the necessary conditions for the biological removal of phosphorus compounds. The technology of pre-fermentation of the sediment of primary sedimentation tanks, options for its design, the main parameters of the process are described. Specific aspects of the operation of low-capacity wastewater treatment facilities are indicated and the expediency of using the technology of biological phosphorus removal in them is considered.

Noninvasive Investigation of Cerebral Ischemia by Phosphorus Nuclear Magnetic Resonance

PEDIATRICS ◽  
1982 ◽  
Vol 70 (2) ◽  
pp. 310-313
Author(s):  
D. T. Delpy ◽  
R. E. Gordon ◽  
P. L. Hope ◽  
D. Parker ◽  
E. O.R. Reynolds ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Human Subjects ◽  
Newborn Infants ◽  
Phosphorus Compounds ◽  
Mobile Phosphorus ◽  
Brain Substance ◽  
The Brain ◽  
Nuclear Magnetic

Brain damage in newborn infants who require intensive care commonly results from cerebral hemorrhage or ischemia leading to infarction.1 Hemorrhages are easy to detect with ultrasound2,3 or computed tomography,4 but neither of these techniques reliably identifies ischemic lesions until loss of brain substance has occurred. Phosphorus (31P) nuclear magnetic resonance (NMR) can be used to measure, noninvasively, the relative concentrations of mobile phosphorus compounds involved in energy metabolism in living systems,5 including the brain of animals in vivo.6,7 Intracellular pH can also be estimated. With the introduction of surface radiofrequency coils6 and topical NMR,8 it has recently become possible to make measurements in human subjects, and these methods are already proving valuable for exploring disorders of muscle (references 9 to 11, and M. J. Dawson, R.H.T. Edwards, R. E. Gordon, et al, unpublished data, 1982).

scholarly journals PERSPECTIVES OF MEMBRANE BIOREACTORS FOR WASTEWATER PURIFICATION FROM WASTE OF PHARMACEUTICAL PRODUCTS AND BIOGENIC ELEMENTS

2018 ◽  
pp. 31-40 ◽  
Author(s):  
M.S. Boichenko ◽  
O.O. Vovk ◽  
S.V. Boichenko ◽  
S.I. Shamanskyi
Keyword(s):  
Wastewater Treatment ◽  
Negative Impact ◽  
Renewable Energy Sources ◽  
Pharmaceutical Products ◽  
Membrane Bioreactors ◽  
Water Bodies ◽  
Phosphorus Compounds ◽  
Biogenic Elements ◽  
Human Beings ◽  
Nitrogen And Phosphorus

The article analyzes modern methods of wastewater treatment from bioresistant pharmaceutical products and biogenic elements. Pharmaceuticals, such as anti-inflammatory drugs, analgesics, antibiotics, narcotic drugs, hormones, drugs that reduce cholesterol,etc., are often get into sewage in small quantities. They are hardly biodegradable and, passing through wastewater treatment plants without any changes, they often end up in water bodies. They have significant negative impact on aquatic ecosystems and human health, while being present in open waters even in small quantities. Among the nutrients that are also present in the wastewater, nitrogen and phosphorus compounds deserve the greatest attention. While getting into water bodies, they cause eutrophication, which isalso dangerous to ecosystems and human beings. It is shown that among modern variety of purification methods, the most suitable for removal of pharmaceutical products and biogenic elements are biochemical methods and photopurification technologies, as well as using membrane bioreactors. Biosorption-membrane methods open the possibility to use modern biotechnologies for efficient removal of bioresistant xenobiotics and reducing their negative impact on natural environment. Using photopurification technologies can help to reduce amount of nutrients discharged in surface water bodies, thus reducing their potential for eutrophication, as well as receiving additional renewable energy sources. Bibl. 30, Fig. 3, Tab. 4.  

scholarly journals Isolation and study of promising strains of phosphate-mobilizing microorganisms for the creation of biofertilizer

2020 ◽  
Vol 99 (3) ◽  
pp. 36-42
Author(s):  
Nariman Zhappar ◽  
◽  
Valerij Shaikhutdinov ◽  
Bakhytzhan Myrzabayev ◽  
Kanatbek Zeinelov ◽  
...  
Keyword(s):  
Culture Media ◽  
Soil Analysis ◽  
Phosphorus Compounds ◽  
Serratia Plymuthica ◽  
Dissolved Phosphorus ◽  
Mobile Phosphorus ◽  
Biochemical Studies ◽  
Bacillus Spp ◽  
Collection Strain ◽  
Physiological And Biochemical

The article describes the process of isolation and study of strains of phosphate-mobilizing microorganisms. As a result of soil analysis, the selected 9 samples contain a sufficient amount of total nitrogen, humus and mobile phosphorus compounds for the development of microorganisms. As a result of the isolation of phosphate-mobilizing microorganisms, 23 mono-isolates were selected. After incubation of the flasks, analyzes for the content of dissolved phosphorus and pH in the culture media were carried out. As a result, the highest content of dissolved phosphorus was obtained by incubation of monoisolates No. 9 and 20, which were 3.57 g/l and 2.55 g/l, respectively. Also, the pH of the medium in these monoisolates showed the lowest values: 5.4 and 5.7, respectively. Monoisolates No. 9 and 20 are named FT1 and FT2, respectively. Based on physiological and biochemical studies, isolated monoisolates were identified as Bacillus megaterium FT1 and Bacillus sp. FT2. As a result of studying phosphate-mobilizing activity in the isolated strains of soil phosphate mobilizing microorganisms and the collection strain, the new strain of B. megaterium FT1 showed the highest phosphate mobilizing activity, where 100 % of phosphorus in the medium were dissolved within 120 hours. The yield of dissolved phosphorus in the medium with the strains of Bacillus spp. FT2 and Serratia plymuthica Nl1 were 50.0 5 and 54.2 %, respectively, for 168 hours.

scholarly journals ANALYSIS OF THE EFFICIENCY OF WASTEWATER REMEDIATION TECHNOLOGIES USING MICROALGAE

ScienceRise ◽  
2020 ◽  
pp. 13-18
Author(s):  
Inna Nezbrytska ◽  
Sergii Shamanskyi ◽  
Sergii Boichenko ◽  
Galyna Kharchenko ◽  
Lesia Pavliukh
Keyword(s):  
Surface Water ◽  
Industrial Wastewater ◽  
Toxic Elements ◽  
Water Bodies ◽  
Raw Material ◽  
Organic Fertilizers ◽  
Phosphorus Compounds ◽  
Biogenic Elements ◽  
Wastewater Remediation ◽  
Technological Product

The object of research: the technology of wastewater remediation. Investigated problem: improving the efficiency of biogenic and toxic elements removal from different types of wastewater and reducing the amount of waste in the removal process. The main scientific results: Possible strains of microalgae, which have ability to absorb biogenic and toxic elements during their metabolism, are identified. It is shown that the use of microalgae is a promising method of wastewater remediation due to their wide availability, the ability to reduce pollution to the established maximum allowable discharge into reservoirs and the ability to accumulate high biomass, which can serve as raw material for industrial products. In particular, Oscillatoria spp. effectively removes chromium, Chlorella vulgaris effectively removes cadmium, copper and zinc, Chlamydomonas spp. effectively removes lead, Euglena gracilis effectively removes nitrogen and phosphorus compounds. It is also shown that the most effective way to solve the problem of restoring the biomass of algae obtained in wastewater is to use immobilized cell systems. The use of immobilized systems can also increase the resistance of cells and the rate of their removal of various pollutants and xenobiotics from wastewater. The area of practical use of the research results: Municipal enterprises for domestic and surface wastewater treatment. Enterprises for the treatment of industrial effluents. Enterprises for biomass processing, production of motor fuels, biogas, organic fertilizers. Innovative technological product: The technology of remediation of domestic, surface and industrial wastewater, which allows to effectively purify these waters from toxic and biogenic elements and reduce pollution of surface water bodies. The technology assumes the absence of waste, as the resulting biomass of microalgae is considered as a raw material for the production of various products. Scope of the innovative technological product: Technological schemes of domestic, rain and industrial wastewater remediation, protection water bodies from pollution, improvement of surface water quality.

Sign in / Sign up

Export Citation Format

Share Document