scholarly journals Revealing the Surge Phenomena Contribution of the Heavy Metals Inflow to the River Don Delta

2020 ◽  
Vol 27 (5) ◽  
Author(s):  
I. V. Sheverdyaev ◽  
A. V. Kleschenkov ◽  
◽  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Water Content ◽  
Suspended Matter ◽  
Suspended Solids ◽  
River Flow ◽  
Matter Content ◽  
Surge Phenomena ◽  
Variable Water ◽  
Taganrog Bay

Purpose. The aim of the study is to evaluate the surge phenomena effect on the heavy metals inflow to the Don Delta based on the archival and expedition data analysis, as well as using mathematical modeling. Methods and Results. To achieve the purpose, the Hydrologic Engineering Center River Analysis System (HEC-RAS) mathematical hydrodynamic model and the original model of the heavy metal compounds’ transfer and transformation in the Don Delta, developed by S. V. Berdnikov were applied. The models included the irregular grid for the Don Delta region with the average resolution 100 × 100 m. The grid cells were grouped into the compartments according to the hydrological principle. Twelve scenarios of dynamics of the suspended solids, and the dissolved and suspended forms of Ni, Cu, Pb and Cd were calculated for the surges of various intensity under the conditions of variable water content and seasonal dynamics of near-water vegetation. In accordance with the scenarios, the graphs showing the changes in the suspended matter content and accumulation, and the maps of the deposited substance distribution resulted from the surges in the delta were constructed. During two days the calculations for which include the surges of varying repeatability and the variable water content, about 0.3–3 t of nickel compounds, 0.1–1.8 t of copper compounds, 0.2–1.8 t of lead compounds and 0.01–0.04 t of cadmium ones deposit in Don. The obtained results made it possible to reveal two regions where the increased accumulation of the precipitated suspended matter and the heightened concentrations of the heavy metal dissolved forms were observed: the interfluve of the Don shipping channel, and the systems of the Kalancha and Kuterma river branches. Conclusions. As for their influence upon formation of the flow of the heavy metal suspended forms, the surge phenomena surpass the river flow. The suspended matter concentration in the Taganrog Bay waters during the surges is the governing factor for the heavy metals inflow to the Don Delta. At the same time, the regions characterized by the highest suspended solids sedimentation and the increased concentrations of the heavy metal dissolved forms are the closest to the Taganrog Bay areas covered by reed vegetation.

scholarly journals Revealing the Surge Phenomena Contribution of the Heavy Metals Inflow to the River Don Delta

2020 ◽  
Vol 36 (5) ◽  
Author(s):  
I. V. Sheverdyaev ◽  
A. V. Kleschenkov ◽  
◽  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Water Content ◽  
Suspended Matter ◽  
Suspended Solids ◽  
River Flow ◽  
Matter Content ◽  
Surge Phenomena ◽  
Variable Water ◽  
Taganrog Bay

Purpose. The aim of the investigation is to evaluate the surge phenomena effect upon the heavy metals inflow to the Don Delta based on analysis of the archival and expedition data, as well as using mathematical modeling. Methods and Results. To achieve the purpose, the Hydrologic Engineering Center River Analysis System (HEC-RAS) mathematical hydrodynamic model and the original model of the heavy metal compounds’ transfer and transformation in the Don Delta, developed by S. V. Berdnikov were applied. The models included the irregular grid for the Don Delta region with the average resolution 100 × 100 m. The grid cells were grouped into the compartments according to the hydrological principle. Twelve scenarios of dynamics of the suspended solids, and the dissolved and suspended forms of Ni, Cu, Pb and Cd were calculated for the surges of various intensity under the conditions of variable water content and seasonal dynamics of near-water vegetation. In accordance with the scenarios, the graphs showing the changes in the suspended matter content and accumulation, and the maps of the deposited substance distribution resulted from the surges in the delta were constructed. During two days the calculations for which include the surges of varying repeatability and the variable water content, about 0.3–3 t of nickel compounds, 0.1–1.8 t of copper compounds, 0.2–1.8 t of lead compounds and 0.01–0.04 t of cadmium ones deposit in Don. The obtained results made it possible to reveal two regions where the increased accumulation of the precipitated suspended matter and the heightened concentrations of the heavy metal dissolved forms were observed: the interfluve of the Don shipping channel, and the systems of the rivers Kalancha and Kuterma branches. Conclusions. As for their influence upon formation of the flow of the heavy metal suspended forms, the surge phenomena surpass the river flow. The suspended matter concentration in the Taganrog Bay waters during the surges is the governing factor for the heavy metals inflow to the Don Delta. At the same time, the regions characterized by the highest suspended solids sedimentation and the increased concentrations of the heavy metal dissolved forms are the closest to the Taganrog Bay areas covered by reed vegetation.

scholarly journals Evaluation of the effects of bio stabilised waste on soil in terms of heavy metal accumulation and leaching

2018 ◽  
Vol 13 (3) ◽  
pp. 1 ◽  
Author(s):  
Francesco Lombardi ◽  
Giulia Costa ◽  
Maria Chiara Di Lonardo ◽  
Alessio Lieto
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Accumulation ◽  
Organic Matter Content ◽  
Total Content ◽  
Heavy Metal Accumulation ◽  
Matter Content ◽  
Aerobic Biodegradation ◽  
Solid Matrix

This work evaluated and compared potential impacts related to the accumulation and/or release of heavy metals resulting from the application of different types of stabilized waste to soil. Namely, the following three types of flows were considered: waste produced by aerobic bio-stabilization of municipal solid waste at a Mechanical Biological Treatment (MBT) plant, and compost produced either from aerobic composting or from a combination of anaerobic and aerobic biodegradation processes. After a preliminary characterization of the materials (organic matter content, volatile solid, and heavy metals content), heavy metal accumulation in soil caused by possible long-term application of these organic materials was evaluated by implementing a discretized mass balance based on the total content of the heavy metals in each type of solid matrix investigated. In addition, results of percolation leaching tests performed on each type of material were presented and discussed. Results highlight that although the total content of heavy metals of the three types of materials differed considerably, with the MBT waste presenting the highest concentrations, the results of the leaching percolation tests were quite similar.

Study on the Relationship Between Suspended Solids Concentration and Tur-bidity in Coal Mine Water

2021 ◽  
Author(s):  
Song Du ◽  
Wenbiao Jin ◽  
Guichuan Qiao ◽  
Huiming Fang
Keyword(s):  
Error Analysis ◽  
Coal Mine ◽  
Suspended Matter ◽  
Mine Water ◽  
Suspended Solids ◽  
Coal Mines ◽  
Matter Content ◽  
Solids Concentration ◽  
Coal Mine Water ◽  
The Relationship

Abstract Coal mine water in China is mainly mine water containing suspended solids（SS）. The relationship between suspended solids and turbidity in mine water with different SS content gradients was studied and a model formula was established. Finally, the accuracy of the model formula is verified by the actual detection values of five kinds of mine water. Two conversion formulas for turbidity and suspended matter have been obtained in the study. When the suspended matter content is 0-200mg/L, the relationship curve between turbidity and SS is y=0.9336x-3.1393, R2=0.9986; When the suspended matter content is 200-600 mg/L, the relationship curve between turbidity and SS is y=0.5314x+94.421, R2=0.9905. Finally, the study has used the measured values of SS in other coal mines and the calculated values obtained from the formula to carry out error analysis. It is found that the error of the relationship between turbidity and SS with a suspended matter content of 0~200mg/L is controlled within 4%; the error of the relationship between turbidity and SS of mine water with a suspended matter content of 200~600mg/L is controlled within 5%. Considering the unavoidable error factors, it is considered that the model formula can be applied to the detection of suspended solids in actual mine water.

scholarly journals Heavy Metal Accumulation in Two Macrophyte Species in River Drina, Republic of Serbia

2017 ◽  
Vol 12 (2) ◽  
pp. 204-210
Author(s):  
Halime Elgamoudi ◽  
Gordardana Drazic
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Suspended Solids ◽  
Anthropogenic Activities ◽  
Myriophyllum Spicatum ◽  
Environmental Pollutants ◽  
Heavy Metal Accumulation ◽  
Limit Values ◽  
Hydropower Plants ◽  
State Of The Environment

Monitoring of the state of the environment in the waterway itself and in the entire catchment area is important for its sustainable development. Heavy metals are strong environmental pollutants and many of them are toxic, even at very low concentrations. In this study River Drina was chosen due to these unique characteristics: the great river with large auto purification ability but in pressure of anthropogenic activities including hydropower plants, border between countries. The aim of this research was to compare data from chemical analyses of Ni, Zn, Cu, Cr, Cd, As, Pb and Hg contents in water, suspended solids and sediment with its contents in native macrophytes, Myriophyllum spicatum, and Potamogeton pusillus, in reservoirs of hydropower plants Bajina Bašta and Zvornik, on river Drina in Republic of Serbia. Contents of heavy metals in water were low and belongs to water class I. Heavy metal concentrations exceeds the limit values for Ni (184 mg/kg), Zn (3233 mg/kg), Cd (0.0042 mg/kg), Cu (157 mg/kg) and As (109 mg/kg) in Zvornik reservoir in suspended solids and sediment and for Zn (1048 mg/kg), Cu (402 mg/kg) and Hg (2.24 mg/kg) in Bajina Bašta reservoir, in suspended solids. In all the examined cases heavy metal contents in macrophytes were significantly higher than in water and relationship with suspended solids and sediment depends to plant species and metal. For Ni, Cd and As accumulation was obseved only in Myriophyllum spicatum, for Cu and Pb in both types. The obtained results indicate the need for further monitoring of the concentration of heavy metals in macrophytes, as well as sediment and suspended solids, in order to indicate and assess the quality of the aquatic ecosystem.

Can geotextiles modify the transfer of heavy metals transported by stormwater in infiltration basins?

2005 ◽  
Vol 51 (2) ◽  
pp. 29-36 ◽  
Author(s):  
L. Lassabatère ◽  
T. Winiarski ◽  
R. Galvez-Cloutier
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Water Content ◽  
Fibrous Materials ◽  
Flow Rates ◽  
Column Leaching ◽  
Metal Retention ◽  
Infiltration Basin ◽  
Hydraulic Conditions ◽  
Leaching Experiments

Geotextiles are fibrous materials increasingly employed for the design of infiltration basins. However, their influence on the transfer of contaminants carried by stormwater has not been fully investigated. This study, based on column leaching experiments, aims at showing the effect of geotextiles on the transfer of three heavy metals (Zn, Pb and Cd) in a reactive soil (simulating an infiltration basin at laboratory scale). This effect depends on several factors, such as type of geotextile, hydric conditions (geotextile water content), hydraulic conditions (flow-rates) and the number of geotextiles installed. In all cases, geotextiles influence heavy metal retention by modifying flow and thus regulating contact between these metals and the reactive soil.

Biogeochemistry of Selected Heavy Metals in Western Port, Victoria, and Use of Invertebrates as Indicators with Emphasis on Mytilus edulis planulatus

1979 ◽  
Vol 30 (2) ◽  
pp. 159 ◽  
Author(s):  
JE Harris ◽  
GJ Fabris ◽  
PJ Statham ◽  
F Tawfik
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Water Content ◽  
Freeze Drying ◽  
Linear Functions ◽  
Source Areas ◽  
Seagrass Meadows ◽  
Eastern Side ◽  
Metal Levels ◽  
Geological Source

The relationships of Cd, Cu, Fe, Mn, Pb and Zn in sediments, seagrasses, and several invertebrates with geological source areas in the Western Port catchment are examined. Highest concentrations of heavy metals in sediments and seagrasses appear to be derived from an old swamp environment. Highest levels of Cd, Fe, and Pb are found in mussels on the eastern side of the embayment where suspended sediment and detritus from seagrass meadows of the Embayment Head would be carried by the clockwise net circulation in the bay. Zinc distributions are affected by an industrial discharge which has been studied using mussels transplanted from an uncontaminated location. Possible loss of iron and lead from tissues of M. edulis planulatus during freeze-drying was noted and the concentrations of Cd, Cu, Mn, Zn and water content were found to be linear functions of mussel length. The highest levels of cadmium in M. edulis planulatus are found along the non-industrialized eastern side of the embayment. Problems in comparing heavy metal levels in mussels from different areas are discussed.

scholarly journals Changes in the Content of Heavy Metals in Bílina River during 2012–2017: Effects of Flood and Industrial Inputs

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 481 ◽  
Author(s):  
Jiří Čmelík ◽  
Taťjána Brovdyová ◽  
Josef Trögl ◽  
Martin Neruda ◽  
Matěj Kadlečík ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Industrial Pollution ◽  
River Flow ◽  
River Sediments ◽  
Anthropogenic Pollution ◽  
Heavy Metal Concentration ◽  
Limit Of Quantification ◽  
The Impact ◽  
Bílina River

This article presents the development of selected heavy metals contained in river sediments at selected sites along the Bílina River. It describes the situation before the large flood in 2013, the situation just after that flood, the situation approximately 1 year after the flood, and 4 years after the flood. The contents of selected heavy metals from industrial pollution originating from transport and industry located along the river flow were monitored. Since the situation in the river before the flood was also known, it was possible to assess the impact of the 2013 flood on the distribution of heavy metals in the settled sediments. The results obtained show that the heavy metal content has changed significantly. During the flood in 2013 there was an increase in the concentration of almost all the monitored elements compared to the situation before the flood and one year after the flood. This could be caused by the churning of sediments as a result of the flood. The only exception was Cd, the concentration of which did not change significantly. However, Cd is present in the sediment samples at a low concentration at the limit of quantification (LOQ), so the change may not be noticeable. In 2017, four years after the flood, an increase in the concentration of all the monitored elements was found. The highest increase in the content of the monitored elements was observed at the sites with the highest industrial pollution. Following the flood in 2014, there was a situation where no significant differences were observed in the content of metals at the individual sampling points in contrast to the values obtained in 2012, 2013, and 2017. As a result of sediment churning and re-settlement during and after the flood, the sediment became homogenized along the entire river flow. After a longer period of time that was not accompanied by floods, a significant increase in the heavy metal concentration was observed due to anthropogenic pollution. The results show that the effect of flooding is only temporal and that anthropogenic pollution is more important than the impact of floods.

scholarly journals Growth and ability of Senna alata in phytoremediation of soil contaminated with heavy metals

2020 ◽  
Vol 12 (2) ◽  
pp. 420-432
Author(s):  
Kelechi L. NJOKU ◽  
Omolola E. OJO ◽  
Anuoluwapo O. JOLAOSO
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soils ◽  
Organic Matter Content ◽  
Matter Content ◽  
Soil Parameters ◽  
Positive Correlation ◽  
Nickel Chromium ◽  
Lead Nickel ◽  
Senna Alata

The performance and impact of Senna alata on experimental heavy metal contaminated soil were investigated in this study. Soils in different pots were contaminated with different levels of lead, nickel, chromium and cadmium based on WHO limits for heavy metals. Seeds of S. alata were planted in the contaminated soils. The plant growth was studied for 60 days.  Some soil parameters and heavy metal contents of the soil were evaluated at the beginning and at the end of the study. The leaf area, the plant height and the number of actively growing stems decreased with increase in the amount of each metal added to the soil. At 60 days, there was significant reduction (p<0.05) of the heavy metals due to the growth of S. alata compared to the soil without the plant. There was reduction in the total organic matter content and the pH of the soil, but the moisture content of the contaminated soils generally increased due to the growth of S. alata. There was a positive correlation (p = 0.918) between the percentage remediation and the bioaccumulation factor, suggesting that the remediation of the heavy metals by the plant mostly occurred through bioaccumulation. A positive correlation between the percentage reduction of the heavy metals and the reduction of pH of the soil noticed suggests that growth of S. alata leads to decrease in soil pH and will enhance the remediation of soil contaminated with the heavy metals. The findings of this study show that apart from the medicinal values of S. alata, it can be useful in remediation of heavy metal polluted soils which occurs mostly through phytoextraction.  

scholarly journals IDENTIFIKASI LOGAM BERAT Hg, Pb DAN Cd DI ALIRAN SUNGAI BATANG KUANTAN, KABUPATEN KUANTAN SINGINGI

2021 ◽  
Vol 3 (1) ◽  
pp. 1-3
Author(s):  
Asregi Asril ◽  
Rosa Murwindra ◽  
Jumriana Rahayu Ningsih
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Government Regulation ◽  
River Flow ◽  
Water Quality Management ◽  
Field Research ◽  
Quality Standard ◽  
Laboratory Methods ◽  
Concentration Threshold ◽  
Ph Level

The identification of heavy metals Hg, Pb and Cd in the Batang Kuantan River, Kuantan Singingi Regency has been carried out successfully. Heavy metals are measured not only from their heavy metal content such as Hg, Pb and Cd but also from the pH level of the river flow itself. The research location is at the Batang Kuantan River, which is measured from 3 points. Changes in Data Observed / Measured are the quality levels of heavy metals in the waters. The research model used includes field research using survey and laboratory methods. The research design was analyzed using the Atomic Absorption Spectometer (AAS). The water sample was given HNO3 until it was acidic and filtered so that there was no sedimentation, then analyzed by AAS. Heavy metal analysis result data technique is compared with quality standard of government regulation no 82 of 2001 regarding water pollution control and water quality management. Pb did not have a problem because the levels were not found. Whereas for Cu and Cd in the category of concentration threshold for reasonableness, which ranged from 0.158-0.1598 ppm and 0.0233-0.2769 ppm.

scholarly journals Effect of Heavy Metal Spread on River Flows from Gold Mining Toward Water Biota in Batang Gadis Mandailing Natal River

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Yusni Atifah ◽  
Fatma Suryani Harahap
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Gold Mining ◽  
River Flow ◽  
Laboratory Data ◽  
Threshold Value ◽  
Base Surface ◽  
Metal Levels ◽  
Biology Laboratory

The purpose of this study is to find out the river water quality in terms of the spread of heavy metals found from the gold mining in Batang Gadis Mandailing Natal River and to determine the effect of heavy metal distribution on river flow from the gold mining of aquatic biota on the Batang Gadis Mandailing Natal River. This research uses descriptive exploratory method by conducting a survey first. Determination of sampling sites using purposive sampling method at the two stations that are determined. Sampling of water and sediments from each location. Water samples were taken as much as 500 mL, samples of sediment were taken at a depth of 10-15 cm from the base surface as much as 100-200 g (Mann, 1978). Examples of water biota are randomly taken at each station as much as 50-100 g, then put together into a composite sample for further analysis in the laboratory. Water quality is measured insitu include temperature, brightness, turbidity, depth, current speed, pH, DO, CO2. While the COD sample, BOD was taken to the laboratory to be analyzed by preservation using ice at a temperature of around 4 oC before observing in the UMTS biology laboratory. Data obtained, then analyzed descriptively. The results of this study are the levels of heavy metals found in the two Batang Gadis River observation stations that are equally good in water, sediment and those found in fish, namely Hg <0,0008, Cd <0,003 and Pb <0,005. Metal levels found are still below the threshold value, but need to be aware of the accumulation of these metals. The histological observations of crisp fish gills at the Bustak mine station are found to experience edema and necrosis which are strongly suspected to be caused by pollution of heavy metals found in the Batang Gadis River. The histological observations of crisp fish liver at the Bustak mine station are found to experience necrosis which is allegedly caused by heavy metal pollution found on the Batang Gadis River

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