scholarly journals TOXICOLOGICAL AND MICROBIOLOGICAL ESTIMATION LEVEL OF POLLUTION ECOSYSTEMS IN THE INDUSTRIAL REGION OF UKRAINE – KRIVOY ROG CITY

2020 ◽  
Vol 73 (9) ◽  
pp. 1962-1967
Author(s):  
Luibov V. Hryhorenko ◽  
Svitlana Yu. Yehorova
Keyword(s):  
Heavy Metals ◽  
Water Samples ◽  
Iron Ore ◽  
Wild Plants ◽  
Aquatic Biota ◽  
Toxic Heavy Metals ◽  
Drinking Purposes ◽  
Ore Processing ◽  
Permissible Levels ◽  
Scientific Substantiation

The aim: Scientific substantiation necessary of PMWW application for the ecologically safe formation of the secondary ecosystems in the mining and iron ore processing areas. Materials and methods: Sanitary-chemical investigation of water samples (n=132); biological objects – plants and aquatic biota was conducted on the content of Pb, Cd, Zn, Mn, Cu, Cr, Ni, Fe (n=112); wild plants samples (n=135); sanitary-microbiological and parasitological indicators 1 – 3 years old waste water sludge (WWS) (n = 68). Results: Overnormal concentrations of salt had been found in water samples, taken from the river Inhulets (2.1 MPL), sulfates and carbonates (2.7 MPL), iron (2.1 MPL), chloride (1.7 MPL), magnesium (3.1 MPL). In wells from nearest villages water is not suitable for drinking purposes and contains total sum of salts – 4.97 MPL, sulfates and carbonates – 5.16 MPL, cadmium – 3.7 MPL, lead – 1.53 MPL. Thus, the toxic heavy metals concentrations (Pb, Cd, Zn, Mn, Cu, Cr, Ni, Fe) in the fish and amphibians did not exceed the permissible levels. Conclusions: Total pollution of the soil within six months after application of sludge correspond to the “permissible” level (Zc=1.61). Use of clearing facilities sludge aged from 1.5 years old and of longer in the amount 15 kg/m2 did not lead to increased concentration of heavy metals in the top layer of dumps.

Ecological and Hygienic Estimation Precipitation of the Municipal Wastewater Application at the Formation of Secondary Ecosystems in the Mining and Iron Ore Processing Areas

2017 ◽  
Vol 20 ◽  
pp. 61-67
Author(s):  
L.V. Hryhorenko
Keyword(s):  
Heavy Metals ◽  
Municipal Wastewater ◽  
Field Studies ◽  
Toxic Heavy Metals ◽  
Drinking Purposes ◽  
Ore Processing ◽  
Fast Development ◽  
Zone Of Influence ◽  
Iron Mining ◽  
Nitrogen Phosphorus

On the basis of Krivoy Rog iron mining ore deposit companies (Ukraine) the complex field studies focused on the fast development of secondary landscapes in the surface of dumps after iron mining were carried out. In order to create the top layer of waste purification from household sewage was carried out sewage clearing facility silt. It is well known that breed dumps are dangerous for the environment, particularly for the surface and ground water. Overnormal concentrations of salt had been found in water samples, taken from the river Inhulets in a zone of influence breed (2.1 MPL), sulfates and carbonates (2.7 MPL), iron (2.1 MPL), chloride (1.7 MPL), magnesium (3.1 MPL). In the wells from nearest villages water is not suitable for drinking purposes and contains total sum of salts – 4.97 MPL, sulfates and carbonates – 5.16 MPL, cadmium – 3.7 MPL, lead – 1.53 MPL. Thus, the toxic heavy metals concentrations (Pb, Cd, Zn, Mn, Cu, Cr, Ni, Fe) in the fish and amphibians, as well as herbaceous plants in these areas did not exceed the permissible levels.Use of clearing facilities sludge aged from 1.5 years and more in the amount 15 kg/m2 did not lead to increased concentration of heavy metals in the top layer of dumps. Total pollution of the soil within six months after application of sludge correspond to the "permissible" level (Zc = 1.61).To assess the suitability of the silt dumps, we proposed list of indicators, which correspond to the chemical and epidemiological safety and classify as "suitable", "conditionally suitable" and "not suitable". We found that optimal conditions for formation of a new soil dumps with ratio of such indicators as "nitrogen: phosphorus: potassium" should be corresponded to the working dose 300 kg/ha by nitrogen amount. This is the maximum amount of mature silt 66.7-70 ton/ha.

scholarly journals Metalliferous content of drinking water and sediments in storage tanks of some schools in Erbil city, Iraq

2020 ◽  
Vol 9 (3) ◽  
Author(s):  
Hawraz Sami Khalid ◽  
Hoshyar Saadi Ali ◽  
Dhary Almashhadany
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Drinking Water ◽  
Water Samples ◽  
World Health ◽  
Storage Tanks ◽  
Quality Indices ◽  
Toxic Heavy Metals ◽  
Water Quality Indices

The present study was conducted to evaluate the quality of drinking water in randomly selected schools in Erbil city, Kurdistan Region, Iraq. The water quality indices such as the Heavy metal Pollution Index (HPI) and Heavy metal Evaluation Index (HEI) were applied to characterize water quality. Eighteen schools were incorporated and sampled for their water storage tanks available to students. Water samples and sediment samples from tanks floor were analyzed by Inductively Coupled Plasma Optical Emission Spectrometer for the determination of twenty-two metal elements. In drinking water samples, all detected metals did not exceed the permissible limits of the World Health Organization. The results of this study showed that the average values of HPI and HEI for As, Cd, Cr, Cu, Fe, Pb, Mn, Ni, and Zn were 54.442 and 0.221, respectively. According to data of the water quality indices, the schools drinking water quality are good and suitable for drinking in terms of heavy metals. However, sediments samples contained high concentrations of all elements including the toxic heavy metals (As, Cd, Cr, and Pb). Re-suspension of sediments into water column after refilling storage tanks can pose a serious threat to students drinking water from such vessels. It is therefore recommended that proper storage tanks are provided to the schools accompanied by continuous sanitation and hygiene practice to mitigate the corrosion of tanks to avoid health risks of toxic metal

Spectrafluorimetric method for the rapid screening of toxic heavy metals in water samples

2002 ◽  
Vol 451 (2) ◽  
pp. 203-210 ◽  
Author(s):  
B. San Vicente de la Riva ◽  
J.M. Costa-Fernández ◽  
R. Pereiro ◽  
A. Sanz-Medel
Keyword(s):  
Heavy Metals ◽  
Water Samples ◽  
Rapid Screening ◽  
Toxic Heavy Metals

Determination of toxic heavy metals in sea water by FAAS after preconcentration with a novel chelating resin

2011 ◽  
Vol 64 (4) ◽  
pp. 803-808 ◽  
Author(s):  
D. Manivannan ◽  
V. M. Biju
Keyword(s):  
Heavy Metals ◽  
Water Samples ◽  
Sea Water ◽  
Metal Chelates ◽  
Chelating Resin ◽  
Toxic Heavy Metals ◽  
Lead And Zinc ◽  
Copper Manganese ◽  
Cobalt Copper

A solid phase extraction procedure was developed for preconcentration of toxic heavy metals such as cadmium, cobalt, copper, manganese, lead and zinc in sea water samples. A microcolumn packed with 6-[(4-hydroxyphenyl)diazenyl]naphthalene-2,3-diol-formaldehyde (HPDN-F) resin acts as a sorbent to retain the analyte ions by forming metal chelates. The retained trace level metal was subsequently eluted with 1 mol/L HCl and the acid eluent was analysed by Flame Atomic Absorption Spectrophotometer (FAAS). The HPDN-F chelating resin and its metal chelates were characterized by spectral and thermal analysis. The chelating property of the HPDN-F resin towards divalent metal ions was studied as a function of pH and preconcentration flow rate. The recoveries of cadmium, cobalt, copper, manganese, lead and zinc under the optimum working conditions were above 95%. The relative standard deviations were <2%. The limits of detection were <0.1 μg/L. The method presented was applied for the determination of cadmium, cobalt, copper, manganese, lead and zinc in sea water samples.

scholarly journals Removal of toxic heavy metals from river water samples using a porous silica surface modified with a new β-ketoenolic host

2019 ◽  
Vol 10 ◽  
pp. 262-273 ◽  
Author(s):  
Said Tighadouini ◽  
Smaail Radi ◽  
Abderrahman Elidrissi ◽  
Khadija Haboubi ◽  
Maryse Bacquet ◽  
...  
Keyword(s):  
Heavy Metals ◽  
River Water ◽  
Water Samples ◽  
Water Solution ◽  
Porous Silica ◽  
Silica Matrix ◽  
Toxic Heavy Metals ◽  
Adsorption Selectivity ◽  
River Water Samples ◽  
Surface Modified

A new hybrid adsorbent material for the efficient removal of heavy metals from natural real water solutions (Moroccan river water samples) was prepared by the immobilization of a new conjugated β-ketoenol–pyridine–furan ligand onto a silica matrix. The thermodynamical properties including pH, adsorption isotherms, competitive adsorption, selectivity and regeneration were studied to investigate the effect of ketoenol–pyridine–furan–silica (SiNL) on the removal of Zn(II), Pb(II), Cd(II) and Cu(II) from aqueous solutions. An increase in adsorption as a function of pH and fast adsorption was reached within 25 min. The maximum sorption capacities for Zn(II), Pb(II), Cd(II) and Cu(II) were 96.17, 47.07, 48.30 and 32.15 mg·g−1, respectively. Furthermore, the material proved to be very stable – its adsorption capacity remained greater than 98% even after five cycles of adsorption/desorption. Compared to literature results, this material can be considered a high-performing remediation adsorbent for the extraction of Zn(II) from natural real water solution.

scholarly journals Adsorption of Arsenic and Heavy Metals from Solutions by Unmodified Iron-Ore Sludge

2019 ◽  
Vol 9 (4) ◽  
pp. 619 ◽  
Author(s):  
Khai Nguyen ◽  
Bien Nguyen ◽  
Hai Nguyen ◽  
Ha Nguyen
Keyword(s):  
Heavy Metals ◽  
Iron Ore ◽  
Batch Studies ◽  
Mixed Metal ◽  
Langmuir Adsorption ◽  
First Order ◽  
Adsorption Capacities ◽  
Ore Processing ◽  
Pseudo Second Order ◽  
Negative Impacts

Arsenic and heavy-metal-contaminated environments are a major concern due to their negative impacts on exposed people and ecosystems. In this study, sludge from an iron-ore processing area was used as an adsorbent to remove As, Mn, Zn, Cd, and Pb from aqueous solutions. The adsorption capacity of target adsorbates was investigated in batch experiments of both single- and mixed-metal solutions. The batch studies show that the maximum Langmuir adsorption capacities of the heavy metals onto the adsorbent occurred in the order Pb > As > Cd > Zn > Mn, and ranged from 0.710 mg/g to 1.113 mg/g in the single-metal solutions and from 0.370 mg/g to 1.059 mg/g in the mixed-metal solutions. The results of the kinetic experiments are consistent with pseudo-first-order and pseudo-second-order models, with a slightly better fit to the latter. Adsorption performances indicate that iron-ore sludge can simultaneously adsorb multiple metal ions and is a promising adsorbent for the removal of toxic pollutants from water.

scholarly journals Determination of Some Heavy Metals in Cultured Nile Tilapia (Oreochromis niloticus) in Western Kordofan State, Sudan

2021 ◽  
pp. 20-29
Author(s):  
O. A. Idam ◽  
M. Rowaida S. Musa ◽  
Ramy A. Yousif
Keyword(s):  
Heavy Metals ◽  
International Organizations ◽  
Water Samples ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Fish Organs ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Significant Difference ◽  
Permissible Levels ◽  
Marketable Size

The current study was conducted in two different localities have been selected in Western Kordofan State (Elsonout and Abu-zabad Localities) to evaluate some heavy metals concentrations (Copper, Cadmium, Zinc, and Lead) in three parts (liver, gills and muscles) of Nile Tilapia (Oreochromis niloticus) cultured in Dams, also to evaluate the same heavy metals concentrations in Dams water where Nile Tilapia is cultured. The evaluation was included the correlation of heavy metals accumulation between fish organs and water samples were compared. Finally, the results were compared with recommended levels by FAO, WHO and other international organizations. A total of 54 samples has been taken from marketable size Nile Tilapia parts (gills; livers and muscles) and subjected to analysis of heavy metals accumulations. Also, a total of 18 water samples were taken from Dams (shallow, middle and deep water). The data was subjected to SPSS using ANOVA. The findings of this work were revealed that, there were a highly significant differences (P≤0.01) in all heavy metals among gills, liver and muscles of Nile Tilapia cultured in Dams. And there was a highly significant difference (P≤0.01) in all heavy metals among gills, liver and muscles of Nile Tilapia according to localities. Anyway, when compared fish organs; we found that, gills were recorded the maximum figures in all heavy metals followed by livers and the minimum figures were recorded by muscles. The results of this study were in the permissible levels recommended by international organizations.

scholarly journals Quantitative Analysis of Heavy Metals and Organic Compounds in Soil from Deir Kanoun Ras El Ain Dump, Lebanon

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Jamilah Borjac ◽  
Manal El Joumaa ◽  
Lobna Youssef ◽  
Rawan Kawach ◽  
Diane A. Blake
Keyword(s):  
Heavy Metals ◽  
Organic Compounds ◽  
Agricultural Land ◽  
Polyaromatic Hydrocarbons ◽  
Soil Samples ◽  
Solid Wastes ◽  
Mitigation Measures ◽  
Toxic Heavy Metals ◽  
Average Maximum ◽  
Permissible Levels

Recently, there has been a worldwide concern regarding soil contamination by heavy metals and organic compounds, especially in the developing countries including Lebanon that has suffered from solid waste mismanagement for decades. Deir Kanoun Ras El Ain is a village in southern Lebanon that possesses one of the country’s worst dumps, and its leachates influx into a running canal that irrigates surrounding agricultural lands. The aim of this study was to determine the levels of some toxic heavy metals and organic compounds in different soil samples collected from the dump and along the canal during winter and summer seasons. Six research sites (four from the dump and two along the canal) were selected, and the soil samples for analysis were collected from a depth of around 10 cm. Heavy metals (lead, cadmium, arsenic, and mercury) and organic compounds (phthalates, bisphenol A, and polyaromatic hydrocarbons) content were determined using atomic absorption and high pressure liquid chromatography, respectively. The conducted research confirmed high levels of contamination in the collected soil samples by both heavy metals and organic compounds. The present study provided evidence that different sampling sites accumulated heavy metals at concentrations that exceeded the average maximum permissible levels for sewage sludge and agricultural land. These findings suggest the need for mitigation measures by the Lebanese authorities and new waste management programs to resolve the problems associated with uncontrolled dumping of solid wastes in Lebanon.

scholarly journals Development of Phytoremediation Technology For Arsenic Removal-A State of Art

2021 ◽  
pp. 112-132
Author(s):  
Dr. Nitin W. Ingole ◽  
Vaibhav R. Dhawale
Keyword(s):  
Heavy Metals ◽  
Arsenic Removal ◽  
Polluted Soil ◽  
Wild Plants ◽  
Contaminated Water ◽  
Toxic Heavy Metals ◽  
Practical Applications ◽  
Physical Chemical ◽  
Soil Phytoremediation ◽  
Removal Of Arsenic

Toxic heavy metals and metalloids, like lead, mercury, arsenic, and selenium, are perpetually free into the surroundings atmosphere. There is a vital need to develop low-priced, effective, and supportable technique for removal or detoxification. Plant primarily based approaches, like phytore mediation, are unit comparatively cheap since they are performed in place and are solar-driven. Now this review, Specific advances in plant-based approaches for the remediation of contaminated water and soil. Phytoremediation is an alternate technology to remove of heavy metals in polluted soil. Wild plants were chosen for arsenic removal experiment. Removal of arsenic by conventional method is very costly; this paper focuses the review on method of phyto remediation to remove arsenic from soil. This method is being aesthetically pleasing and is on average tenfold cheaper than other physical, chemical or thermal remediation methods. This paper attempted to provide a brief review on recent progresses in research and practical applications of phytoremediation for soil and water resources.

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