scholarly journals The muddy bottom sediments of the old river beds of the lower Vistula

2016 ◽  
Vol 16 (3) ◽  
pp. 141-146
Author(s):  
Daria Mimier ◽  
Janusz Żbikowski
Keyword(s):  
Organic Matter ◽  
Water Content ◽  
Bottom Sediments ◽  
Organic Matter Content ◽  
Oxygen Demand ◽  
Dry Weight ◽  
Matter Content ◽  
Sediment Oxygen Demand ◽  
Muddy Bottom ◽  
High Sediment

Abstract The main objective of this study was to characterize the muddy bottom sediments of three hydrologically different old river beds of the lower Vistula, located in the vicinity of Toruń: Port Drzewny, Martwa Wisła and Przybysz. Samples were taken at monthly intervals from April to November 2015 from two (Martwa Wisła and Przybysz) or three sampling sites (Port Drzewny) located in the central parts of the reservoirs. The bottom sediments of these water bodies were characterized by a low water content and organic matter content expressed as a percentage of dry weight, high organic matter content expressed in units of weight, as well as a high sediment oxygen demand. The most distinct reservoir was Martwa Wisła, most likely due to the lack of a connection with the River Vistula.

scholarly journals Total phosphorus and organic matter content in bottom sediments of lake under restoration measures with iron treatment

2010 ◽  
Vol 10 (3-4) ◽  
pp. 139-145 ◽  
Author(s):  
Katarzyna Kowalczewska-Madura ◽  
Renata Dondajewska ◽  
Ryszard Gołdyn
Keyword(s):  
Organic Matter ◽  
Lake Sediments ◽  
Total Phosphorus ◽  
Bottom Sediments ◽  
Organic Matter Content ◽  
Dry Weight ◽  
Matter Content ◽  
Iron Treatment ◽  
Iron Sulphate ◽  
Restoration Measures

Total phosphorus and organic matter content in bottom sediments of lake under restoration measures with iron treatmentRusałka Lake is a shallow, man-made, strongly eutrophicated reservoir, being a place of recreational activities for Poznan citizens. Restoration measures with the use of iron sulphate were conducted in years 2006-2007. Phosphorus and organic matter concentrations in lake sediments were analyzed in years 2005-2007 at two research stations (profundal and littoral) to determine its changes under the influence of restoration. Greater phosphorus concentrations were noted in profundal (max 1.55 mg P g-1dry weight (DW)) than in littoral (max 0.98 mg P g-1DW). An increase of P amount in sediment was observed after iron treatment. Among phosphorus fractions Res-P dominated, i.e. phosphorus biologically unavailable for organisms. Organic matter content reached 23.1% in profundal, while 14.8% in littoral. Its amount decreased in following years.

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

scholarly journals Applicability of biological wastewater treatment for various industries

2021 ◽  
Vol 941 (1) ◽  
pp. 012001
Author(s):  
Basamykina Alena ◽  
Kurkina Ekaterina ◽  
Kameristaya Maria
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Organic Matter Content ◽  
Oxygen Demand ◽  
Anaerobic Treatment ◽  
Matter Content ◽  
Biological Wastewater Treatment ◽  
Aerobic Treatment ◽  
Total Organic Matter ◽  
Inorganic Substances

Abstract Biological treatment methods are used to remove organic and some inorganic substances from wastewater using the simplest organisms that use these substances for nutrition, breaking them down using cellular processes. The article deals with the aerobic, anaerobic and anoxic stages of biological wastewater treatment. Their differences are explained and the best way to use biological processes is analyzed according to the type of industry/production. At wastewater treatment plants, anaerobic treatment is often used at first to remove a significant part of organic substances from wastewater before sending them for further aerobic treatment. Aerobic treatment is effective for various types of wastewater, especially with lower biochemical oxygen demand (BOD) and chemical oxygen demand (COD). A comparative analysis of wastewater composition from food, oil and gas processing, pharmaceutical and pulp and paper industries was carried out. In the presence of organic compounds, the technology is chosen depending on the total organic matter content or the total COD content, which characterizes the total organic matter in water. A combination of anaerobic and aerobic methods is possible, if a discharge into the sewer system or into water bodies is required. The grounds for the application of biological wastewater treatment of these industries are given.

Soil Organic Matter Content and Volumetric Water Content Affect Indaziflam–Soil Bioavailability

Weed Science ◽  
2016 ◽  
Vol 64 (4) ◽  
pp. 757-765 ◽  
Author(s):  
Matthew D. Jeffries ◽  
Travis W. Gannon
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Water Content ◽  
Perennial Ryegrass ◽  
Soil Depth ◽  
Organic Matter Content ◽  
Matter Content ◽  
Volumetric Water Content ◽  
Growth Data ◽  
Soil Organic Matter Content

Indaziflam is a cellulose biosynthesis-inhibiting herbicide for annual weed control in various agricultural systems. Sporadic cases of unacceptable injury to desirable plants have been reported after indaziflam application, which may have been due to conditions favoring increased indaziflam–soil bioavailability. Research was conducted from 2013 to 2015 on a sandy soil to elucidate the effects of soil organic matter content (SOMC) and soil volumetric water content (SVWC) on indaziflam–soil bioavailability. Indaziflam was applied (50 or 100 g ha–1) at fall only, fall plus spring, and spring only timings to plots in a factorial arrangement of SOMC, pre–indaziflam application (PrIA) SVWC, and post–indaziflam application (PoIA) SVWC. After application, field soil cores were collected for a subsequent greenhouse bioassay experiment, where foliage mass reduction of perennial ryegrass seeded from 0 to 15 cm soil depth was used as an indicator of indaziflam–soil bioavailability throughout the profile. Significant edaphic effects were observed at 0 to 2.5, 2.5 to 5, and 5 to 7.5 cm depths, with increased bioavailability at low compared with high SOMC. Pre–indaziflam application SVWC did not affect bioavailability, whereas PoIA high SVWC increased indaziflam–soil bioavailability at 2.5 to 7.5 cm depth compared with PoIA low SVWC. Low SOMC–PoIA high SVWC decreased perennial ryegrass foliage mass 40 and 37% at 5 to 7.5 cm depth from cores collected 10 and 14 wk after treatment, respectively, whereas reductions from all other SOMC–PoIA SVWC combinations were < 12% and did not vary from each other. Pearson's correlation coefficients showed a moderate, positive relationship between perennial ryegrass mass reductions at 0 to 2.5, 2.5 to 5, 0 to 5, and 0 to 10 cm depths and hybrid bermudagrass cover reduction, which suggests conditions favoring increased indaziflam–soil bioavailability can adversely affect plant growth. Data from this research will aid land managers to use indaziflam effectively without adversely affecting growth of desirable species.

scholarly journals Evaluation of Improved Model to Accurately Monitor Soil Water Content

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3441
Author(s):  
Jingyu Ji ◽  
Junzeng Xu ◽  
Yixin Xiao ◽  
Yajun Luan
Keyword(s):  
Organic Matter ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Soil Texture ◽  
Irrigation Management ◽  
Clay Fraction ◽  
Organic Matter Content ◽  
Matter Content ◽  
Improved Model

The accurate monitoring of soil water content during the growth of crops is of great importance to improve agricultural water use efficiency. The Campbell model is one of the most widely used models for monitoring soil moisture content from soil thermal conductivities in farmland, which always needs to be calibrated due to the lack of adequate original data and the limitation of measurement methods. To precisely predict the water content of complex soils using the Campbell model, this model was evaluated by investigating several factors, including soil texture, bulk density and organic matter. The comparison of the R2 and the reduced Chi-Sqr values, which were calculated by Origin, was conducted to calibrate the Campbell model calculated. In addition, combining factors of parameters, a new parameter named m related to soil texture and the organic matter was firstly introduced and the original fitting parameter, E, was improved to an expression related to clay fraction and the organic matter content in the improved model. The soil data collected from both the laboratory and the previous literature were used to assess the revised model. The results show that most of the R2 values of the improved model are >0.95, and the reduced Chi-Sqr values are <0.01, which presents a better matching performance compared to the original. It is concluded that the improved model provides more accurate monitoring of soil water content for water irrigation management.

scholarly journals Woodland Ponds as an Important Habitat of Hippeutis Complanatus (Linnaeus 1758) Occurrence - Effect of Environmental Factors and Habitat Preferences

2014 ◽  
Vol 33 (2) ◽  
Author(s):  
Aneta Spyra
Keyword(s):  
Organic Matter ◽  
Environmental Factors ◽  
Bottom Sediments ◽  
Habitat Preferences ◽  
Organic Matter Content ◽  
Matter Content ◽  
Freshwater Snails ◽  
Fallen Leaves ◽  
Woodland Ponds ◽  
Important Habitat

AbstractSpyra A. Woodland ponds as an important habitat of Hippeutis complanatus (Linnaeus 1758) occurrence - effect of environmental factors and habitat preferences. Ekológia (Bratislava), Vol. 33, No. 2, p. 101-115, 2014.In industrial areas, woodland ponds are refuges of biological diversity. The impact of environmental factors such as the physico-chemical properties of water, organic matter content in bottom sediments and various types of substratum on the occurrence of Hippeutis complanatus were assessed. In Poland, it is considered to be a species with an established but unspecified risk, deserving the status of endangered species due to the decline of wetland environments. A Canonical Correspondence Analysis (CCA) revealed associations between the distribution patterns of freshwater snails species and the concentration of nitrates (NO3) and calcium (Ca) as well as pH and the organic matter content in the bottom sediments. Based on statistical relationships, results of study suggest that the kind of substratum (Typha latifolia remains, Phragmites australis remains, fallen leaves of waterside trees) has an impact on the occurrence of freshwater snails including Hippeutis complanatus for which the preferred substratum is the fallen leaves of waterside trees and sites with a high content of organic matter in bottom sediments. The study has shown that isolated water bodies located in forest complexes can be refuges for species that occur in small numbers in other types of aquatic environments.

scholarly journals Potential of Wastewater Valorization after Wet Extraction of Proteins from Faba Bean and Pea Flours

2020 ◽  
Vol 03 (02) ◽  
pp. 1-1
Author(s):  
Sofía Albolafio ◽  
◽  
María I. Gil ◽  
Ana Allende ◽  
Epameinondas Xanthakis ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Organic Matter ◽  
Environmental Impact ◽  
Faba Bean ◽  
Phenolic Content ◽  
Organic Matter Content ◽  
Oxygen Demand ◽  
Value Added ◽  
Matter Content ◽  
Two Stages

The present study aimed to characterize wastewater fractions obtained after the wet extraction of proteins from legumes. In addition, the suitability of wastewater fractions for the potential recovery of high value-added compounds was also examined, and consequently, the prevention of the environmental impact of these wastes was explored. Similar to the industrial production of proteins, wet alkaline and acidic extractions of proteins from faba bean and pea flours were performed in two stages of extraction. The different wastewater fractions were characterized by measuring their organic matter content, total solids (TS), total dissolved solids (TDS), electrical conductivity (EC), pH, and turbidity. The value-added compounds from these wastewater fractions were quantified, which included the protein content, carbohydrate content, phenolic content, and antioxidant activity. In addition, the phenolic compounds in these factions were identified and quantified. It was observed that the fractions obtained in the first extraction stage had 60%–90% higher organic matter content, measured as the chemical oxygen demand (COD), compared to the second fractions, indicating a higher environmental impact of the former in case of disposal. The results obtained for COD, TS, TDS, EC, pH, and turbidity demonstrated that microfiltration reduced only the turbidity (85%), and consequently, a decrease was observed in the particulate matter, while there was a practically negligible reduction in the soluble matter. Wastewater from faba exhibited the highest polyphenol content and antioxidant activity, and was, therefore, considered the most valuable fraction for potential valorization.

scholarly journals Analysis of cultivable aerobic bacteria isolated from bottom sediments in the Wijdefjorden region, Spitsbergen

2011 ◽  
Vol 32 (2) ◽  
pp. 181-195 ◽  
Author(s):  
Iwona Konieczna ◽  
Barbara Wojtasik ◽  
Marek Kwinkowski ◽  
Dorota Burska ◽  
Kamil Nowiński ◽  
...  
Keyword(s):  
Organic Matter ◽  
Bottom Sediments ◽  
Dna Analysis ◽  
Organic Matter Content ◽  
Matter Content ◽  
Resistance Testing ◽  
Aerobic Bacteria ◽  
Growth Media ◽  
Sampling Station ◽  
Bacterial Strains

Analysis of cultivable aerobic bacteria isolated from bottom sediments in the Wijdefjorden region, SpitsbergenThe paper presents the first physicochemical and microbiological studies conducted in the northern area of Svalbard (Spitsbergen). Ten sediment samples were collected from the bottom of the longest fjord in the region, Wijdefjorden. Bottom sediments from ten lakes lo- cated along the shores of Wijdefjorden and Woodfjorden were also sampled. Organic matter content (LOI), water content, temperature, pH, and salinity of the sediments were determined. The quantity of aerobic bacteria cultured on various growth media at 4°C, 14°C, and 37°C ranged from 102to 106cfu/g of wet sediment mass, depending on the type of sampling station (fjord or lake). The number of bacteria did not correlate with organic matter content. Out of the 37 bacterial strains isolated from Wijdefjorden, 48% and 70% revealed ureolytic and proteolytic activity, respectively. The proportion of freshwater strains with ureolytic and proteolytic activitywas 32% and 55%, respectively. Antibiotic resistance testing indicated that bacterial strains from the bottom sediments of the lakes were resistant to 8 antibiotics (out of the 18 investigated). Possible sources of this resistance are discussed. Using 16S DNA analysis, bacterial isolates from the lakes were identified asPseudomonassp., whereas frequently occurring strains in bottom sediment of the fjord werePseudoalteromonassp.

scholarly journals Valuable product production from wood mill effluents

2010 ◽  
Vol 62 (10) ◽  
pp. 2294-2300 ◽  
Author(s):  
T. Mato ◽  
M. Ben ◽  
C. Kennes ◽  
M. C. Veiga
Keyword(s):  
Organic Matter ◽  
Volatile Fatty Acids ◽  
Batch Reactor ◽  
Organic Matter Content ◽  
Oxygen Demand ◽  
Matter Content ◽  
Valuable Product ◽  
High Chemical Oxygen Demand ◽  
Complex Organic ◽  
Aerobic And Anaerobic

Fibreboard production is one of the most important industrial activities in Galicia (Spain). Great amounts of wastewater are generated, with properties depending on the type of wood, treatment process, final product and water reusing, among others. These effluents are characterized by a high chemical oxygen demand (COD), low pH and nutrients limitation. Aerobic and anaerobic processes have been used for their treatment. Presently, bioplastics production (mainly polyhydroxyalkanoates or PHA) from wastewaters with mixed cultures is being studied. Substrate requirements for these processes are a high organic matter content and low nutrient concentration. Therefore, wood mill effluents could be a suitable feedstock. PHA production from wastewaters is carried out in three steps. First, complex organic matter is converted into volatile fatty acids (VFA) through acidogenic fermentation. Then, VFA are used as substrate in an aerobic sequencing batch reactor (SBR), in which the enrichement of PHA producing bacteria from a mixed culture is favoured. Finally, the sludge from the SBR is fed with a pulse containing high VFA concentrations, resulting in PHA accumulation inside the cells. In this work, the possibility of applying this process to wood mill effluents is proposed. An acidification percentage of 37% and a storage yield (YSTO) of 0.23 Cmmol/Cmmol were obtained.

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