scholarly journals Investigations of Metal Pollution in Road Dust of Steel Industrial Area and Application of Magnetic Separation

2022 ◽  
Vol 14 (2) ◽  
pp. 919
Author(s):  
Hyeryeong Jeong ◽  
Kongtae Ra
Keyword(s):  
Magnetic Separation ◽  
Metal Pollution ◽  
Magnetic Particles ◽  
Road Dust ◽  
Industrial Area ◽  
Magnetic Fraction ◽  
Industrial Areas ◽  
Accumulation Index ◽  
The Mean ◽  
Geo Accumulation Index

Pollution characteristics and ecological risks for metals in non-magnetic and magnetic road dust from steel industrial areas were investigated by applying a magnetic separation method. Metal (except for Al, Li, Ti, As, and Sb) concentrations in the magnetic road dust were 1.2 (Sn) to 7.8 (Fe) times higher than those in the non-magnetic road dust. For the magnetic road dust, the geo-accumulation index revealed a strongly to extremely polluted status for Cr, Zn, Cd, and Sb, a strongly polluted status for Mn, Cu, and Pb, and a moderately to strongly polluted status for Fe, Ni, Mo, and Hg. This result indicates that the dominant metal pollution sources of road dust in industrial areas were the traffic activities of heavy-duty vehicles. The mean content of magnetic particles accounted for 44.7% of the total road dust. The metal loadings in the magnetic road dust were 86% (Fe), 77% (Cr), 67% (Mn), 86% (Ni), 76% (Cu), 72% (Zn), 64% (Mo), and 62% (Cd), respectively. Removal of the magnetic fraction from road dust using magnetic separation techniques not only reduces metal contamination but can also improve effective road cleaning strategies or reduce waste generation.

Distribution and Contamination Status of Heavy Metals in the Surface Sediments along Western Coast of Bali Strait, Banyuwangi

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Defri Yona ◽  
Syarifah Hikmah Julinda Sari ◽  
Anedathama Kretarta ◽  
Citra Ravena Putri Effendy ◽  
Misba Nur Aini ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Contamination Factor ◽  
Pollution Index ◽  
Western Coast ◽  
Sampling Locations ◽  
Accumulation Index ◽  
Geo Accumulation Index ◽  
Geo Accumulation

This study attempted to analyze the distribution and contamination status of heavy metals (Cu, Fe and Zn) along western coast of Bali Strait in Banyuwangi, East Java. Bali Strait is one of the many straits in Indonesia with high fisheries activities that could potentially contributed to high heavy metal pollution. There were five sampling areas from the north to south: Pantai Watu Dodol, Pantai Kalipuro, Ketapang Port, Pantai Boom and Muncar as the fish landing area. Heavy metal pollution in these locations comes from many different activities such as tourism, fish capture and fish industry and also domestic activities. Contamination factor (CF), geo-accumulation index (Igeo) and enrichment factor (EF) of each heavy metal were calculated to obtain contamination status of the research area. The concentrations of Fe were observed the highest (1.5-129.9 mg/kg) followed by Zn (13.2-23.5 mg/kg) and Cu (2.2-7.8 mg/kg). The distribution of Cu, Fe and Zn showed variability among the sampling locations in which high concentrations of Cu and Zn were higher in Ketapang Port, whereas high concentration of Fe was high in almost all sampling locations. According to the pollution index, contamination factors of Cu, Fe and Zn were low (CF < 1 and Igeo < 1). However, high index of EF (> 50) showed high influence of the anthropogenic activities to the contribution of the metals to the environment. This could also because of the high background value used in the calculation of the index due to the difficulties in finding background value from the sampling areas.Keywords: heavy metals, pollution index, contamination factor, geo-accumulation index, Bali Strait

scholarly journals A Study on the Pollution Status of Akata Lake Sediments, Katsina-Ala Benue State, Nigeria

2021 ◽  
pp. 26-31
Author(s):  
Yebpella G.G ◽  
Magomya A.M ◽  
Hikon B.N ◽  
Joshua Y ◽  
Gani J
Keyword(s):  
Heavy Metals ◽  
Pollution Load Index ◽  
World Health ◽  
Pollution Status ◽  
Accumulation Index ◽  
Contaminated Food ◽  
Air Intake ◽  
The Mean ◽  
Health Organization ◽  
Geo Accumulation Index

Heavy metals accumulation in biological system are by inhalation of contaminated air, intake of contaminated food or drinking water has been considered to be an ecological menace to man and other organisms. This study was carried out to ascertain the pollution status of Cr, Pb, Zn, Cu and Cd in sediment of Akata Lake, Katsina- Ala Benue State, Nigeria. Sediment samples were collected, digested using 30% H2O2 followed by 0.5M HCl and the metal concentrations were determined with Varian AA240 Atomic absorption spectrophotometer equipped with Zeeman’s background correction (Varian, New Jersey, USA). The mean level of the heavy metals, Pb, Zn, Cu, Cd and Cr are 31.05, 2.72, 19.22 and 0.88 mg/kg while the concentration of Cr was below the detection limit of the instrument. The values obtained were compared with the established soil and sediment standard by World Health Organization (WHO). The contamination factors value for Zn, Cu and Cd are <1 while that of Pb is >1, hence it shows that the sediment is polluted by lead. The pollution load index (PLI) and Geo-accumulation index (Igeo) levels for Cr, Zn, Cu, Cd heavy metals in sample A - E were less than 1 except for Pb which is >1, this show that, the sediment were polluted with Pb.

scholarly journals Bioaccumulation and health risk assessment of severe metal pollution of street dust from various urban regions in Baghdad, Iraq

2020 ◽  
Vol 158 ◽  
pp. 05004
Author(s):  
Salwan Ali Abed ◽  
Safaa A Kadhum ◽  
Salam Hussein Ewaid ◽  
Nadhir Al-Ansari
Keyword(s):  
Health Hazard ◽  
Road Dust ◽  
Local Environment ◽  
Street Dust ◽  
Contamination Level ◽  
Human Environment ◽  
Accumulation Index ◽  
Brake Wear ◽  
First Time ◽  
Geo Accumulation Index

This study sought to define the metals bioaccumulation from street dust in Baghdad, Iraq for the first time. The samples were collected that research the levels, sources, and health hazard model Cd, Cr, Zn and Cu. The geo accumulation Index (Igeo) found that the contamination level for Cd was moderately to strongly polluted in Karada, Jihad and Kinidi streets. Hence, it is important to measure the level of cadmium in the local environment. The relative bioaccumulation of chromium was high in Jadriyah Street (87.2%). The PCA showed two major sources of these minerals in Baghdad road dust that Cd, Zn are likely to originate from tire wear, brake wear and vehicular emissions as well as the fact that Cr and Cu originate from metal-processing industries. Assessing hazard to human health utilized measure population show suggested both non-carcinogenic and carcinogenic hazards minerals Baghdad road dust harmless to human environment.

scholarly journals Analysis of Heavy Metals in Surface Sediments from Agh Gel Wetland, Iran

2016 ◽  
Vol 10 (3) ◽  
pp. 41-46
Author(s):  
Soheil Sobhanardakani ◽  
◽  
Mehrnaz Ghoochian ◽  
Keyword(s):  
Heavy Metals ◽  
Surface Sediments ◽  
Contamination Factor ◽  
Dry Weight ◽  
Pollution Load Index ◽  
Pollution Load ◽  
Chemical Pollutants ◽  
Accumulation Index ◽  
The Mean ◽  
Geo Accumulation Index

Background: Soil and sediment serve as major reservoir for contaminants as they possess ability to bind various chemicals together. In this study the concentrations of heavy metals Cd, Cr and Cu were analyzed in surface sediments of Agh Gel Wetland in west of Iran. Methods: The sediment samples were taken from 10 stations. The samples were subjected to bulk digestion and chemical partitioning and Cd, Cr and Cu concentrations of the sediments were determined by ICP-OES. Geo-accumulation index (I-geo), Contamination factor (CF) and Pollution load index (PLI) were used to evaluate the magnitude of contaminants in the sediment profile. Results: The mean sediment concentrations (mg kg-1 dry weight) ranged within 0.20-0.29 (Cd), 58-71 (Cr) and 23-36 (Cu). According to the I-geo values, the sediments' qualities are classified as unpolluted to moderately polluted category. According to the CF values, the sediments' qualities are classified as low to moderate contamination. Furthermore, the PLI values indicated that there were no metal pollution exists for all sampling stations. Conclusion: The Agh Gel Wetland is potential to be threatened by chemical pollutants such as agricultural effluent. So to preserve the environment of the Agh Gel Wetland from deterioration, periodically monitoring of the water and sediment qualities is recommended.

Sedimentological and environmental approach of the Llumeres offshore sediments (N Asturias-N Spain)

2021 ◽  
Author(s):  
Germán Flor-Blanco ◽  
Efrén García-Ordiales ◽  
Raul Ruiz-Quesada ◽  
Luis Pando ◽  
Germán Flor
Keyword(s):  
Mineralogical Composition ◽  
Industrial Area ◽  
Offshore Structures ◽  
Geochemical Evolution ◽  
Accumulation Index ◽  
Recent Sediments ◽  
The Moment ◽  
North Of Spain ◽  
Geo Accumulation Index ◽  
Made In

&lt;p&gt;The sedimentological and geochemical evolution of the internal platform located in front of the Llumeres cove (Asturias, North of Spain) has been studied, based on the analysis of selected sediment samples from 5 long corers, approximately 2 m thick, recovered for an offshore structures installation project. In each sample, a granulometric characterization has been carried out by the calculation of granulometric parameters (centile, mean, shorting, etc.) and the mineralogical composition (silica/biogenic carbonates). Geochemical analysis has also been made in the samples.&amp;#160; The enrichment of selected heavy metals and metalloids (Zn, As, Cu, Pb and Hg) has been studied, applying the Geo-accumulation Index (Igeo) and the Enrichment Factor (EF). The results have also been subjected to multivariate and bivariate statistical analyzes that have allowed establishing the relationships between the elements and determining in a preliminary way their potential origin.&lt;/p&gt;&lt;p&gt;The sedimentological results point to the fact that the sediment was incorporated into the internal platform during the last stages of the sea level rise, which began some 20,000 years ago (Pleisto-Holocene transgression). At present, the zone enjoys stability, since no sedimentation is detected. These sediments are relict, without existing agreement with the siliciclastic sedimentation that is taking place at the moment in the coastal zone (Llumeres beach). Three main sandy lithologies have been analyzed: siliciclastic, mixed and carbonate sands which are distributed irregularly in the vertical. This is indicative of changes in the origin of the sediment (siliciclastic, due to the coastal drift current and bioclastic, typical from the platform), as well as the energy of the depositional agent with a clear decrease in size towards the top, detecting relatively large variations in size and the coarse sediments would correspond to moments of storm.&lt;/p&gt;&lt;p&gt;The geochemical results show that the area does not have a remarkable anthropic condition along the sedimentological profile. However, enrichment of some potential contaminants was detected in the more recent sediments (first centimeters of the boreholes), but the enrichment does not appear to pose an environmental risk and their origin seem to be related to nearby areas such as the Nal&amp;#243;n River or the industrial area of Aviles that may export contaminants to the marine environment.&lt;/p&gt;

Vortex magnetic separation

1997 ◽  
Vol 211 (1) ◽  
pp. 31-42 ◽  
Author(s):  
J L S Watson ◽  
Z Li
Keyword(s):  
Magnetic Separation ◽  
Magnetic Particles ◽  
Effluent Treatment ◽  
Magnetic Fraction ◽  
High Gradient Magnetic Separation ◽  
High Gradient ◽  
Downstream Side ◽  
The Matrix ◽  
Magnetic Product ◽  
The Wire

Vortex magnetic separation (VMS) is a new technique (1-3) which can not only greatly increase selectivity of high gradient magnetic separation but can also provide a much higher material throughput because high slurry velocity is used. This technique will have a wide range of applications in fields as diverse as mineral processing, biochemical engineering, sewage and wastewater treatment and industrial effluent treatment. At present in high gradient magnetic separation (HGMS) low Reynolds numbers (with respect to the wire diameter) are usually used and the magnetic product is captured on the upstream side of the wire matrix which results in a serious mechanical entrainment problem that is very detrimental to the purity of the magnetic fraction and to the reduction of the quantity of non-magnetic fraction (4). Vortex magnetic separation runs at moderate Reynolds number ( Re = 6–40) which leads to the formation of vortex flow in the neighbourhood of the matrix. Magnetic particles in the slurry are first concentrated in the boundary layer flow around the matrix and then brought into the magnetically attractive area on the matrix downstream side. The magnetic deposit on the downstream side of the matrix does not suffer the direct collisions with non-magnetic particles in the slurry, so the quality of the magnetic product is drastically improved. As will be described below, a new invention has been made with regard to the VMS matrix which allows capture to take place on both the upstream and downstream sides of the matrix without mechanical entrainment. This paper reviews experimental and theoretical work on the mechanisms involved in vortex magnetic separation.

scholarly journals Assessment of Heavy Metal Pollution of Water, Sediments and Algae in River Benue at Jimeta-Yola, Adamawa State, Nigeria

2019 ◽  
Vol 1 ◽  
pp. 186-195
Author(s):  
A A Tyovenda ◽  
S I Ikpughul ◽  
T Sombo
Keyword(s):  
Heavy Metal ◽  
Enrichment Factor ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Contamination Factor ◽  
Pollution Load Index ◽  
Pollution Load ◽  
Accumulation Index ◽  
Geo Accumulation Index ◽  
Geo Accumulation

Heavy metal pollution of water, sediments and Algae in the upper region of River Benue at Jimeta-Yola, Adamawa state, Nigeria was assessed. The concentrations of the heavy metals (Pb, Hg, Ni, Cu, Cr, Zn, Mn, Fe) in the samples were analyzed using Atomic Adsorption Spectrometer. Pollution parameters such as enrichment factor, contamination factor, pollution load index and geo-accumulation index were evaluated. The result of heavy metal analysis showed that, the concentration (ppm) of the metals in water samples ranged as follows: Pb(0.25-0.50), Hg(0.00-2.00), Ni(0.10-0.31), Cu(0.03-0.13), Cr(0.00-1.33), Zn(0.01-0.04), Mn(0.03-0.06) and Fe(105.15-118.75) respectively. This result when compared with the EPA maximum permissible limits for drinking water showed that, all the metals except Cu and Zn had values above the permissible limits. The evaluation of enrichment factor revealed that, Hg showed extremely high enrichment while Pb showed significant enrichment for Algae, water and sediment samples. The contamination factor showed low contamination for all metals except Hg which showed considerable contamination for sediments, water and Algae samples. The pollution load index for sediments, water and Algae indicated no pollution. The geo-accumulation index of the metals in sediments, water and Algae indicates no or minimal pollution. The samples were enriched with Hg and Pb. These metals are capable of causing various types of cancer, brain and kidney damage among other ailments.

scholarly journals Evaluation of Groundwater Quality for Heavy Metals by Using Chemical Indices Approach in Karachi, Pakistan

2021 ◽  
Vol 22 (2) ◽  
pp. 358-366
Author(s):  
Aziz Ur Rahman ◽  
Haq Nawaz Abbasi ◽  
Muhammad Owais
Keyword(s):  
Heavy Metals ◽  
Groundwater Quality ◽  
Pollution Index ◽  
Industrial Area ◽  
Pollution Load Index ◽  
Industrial Estates ◽  
Groundwater Samples ◽  
Accumulation Index ◽  
Geo Accumulation Index ◽  
Freshwater Consumption

Freshwater consumption has been increased because of population growth and economic development. At the same time, depletion and contamination of groundwater is subject of great concern. Karachi is the industrial hub and serves as the economic backbone of Pakistan. The research aims to investigate the heavy metal pollution in the groundwater of Korangi Industrial Area, one of the largest industrial estates in Karachi. Eighteen representative locations were selected to collect groundwater samples and study the concentrations of heavy metals Cr, Fe, Ni, Cu, Zn, and Pb. Pollution load index, Nemerow's pollution index, and geo accumulation index approaches were used to interpret the basic data. The average concentrations of the measured heavy metals were 354.67 µg.L-1 , 694.33 µg.L-1 , 39.2 µg.L-1 , 12.89 µg.L-1 , 9.5 µg.L-1 , and 6.17 µg.L-1 for Fe, Zn, Cu, Pb, Cr, and Ni, respectively. The results showed that groundwater quality in the study area is poor and mainly contaminated by Pb and Fe.

scholarly journals ASSESSMENT OF METAL POLLUTION IN WATER AND SURFACE SEDIMENTS OF GORANCHAY RIVER

2021 ◽  
Vol 19 (2) ◽  
pp. 84-93
Author(s):  
S.Sh. Mammadzada ◽  
◽  
F.Y. Humbatov ◽  
I.I. Mustafayev ◽  
◽  
...  
Keyword(s):  
Metal Pollution ◽  
Surface Sediments ◽  
Contamination Factor ◽  
Pollution Index ◽  
Average Concentration ◽  
Single Element ◽  
Sediment Samples ◽  
Sampling Locations ◽  
Accumulation Index ◽  
Geo Accumulation Index

Concentration of metals in water and sediment samples from Goranchay River was examined to obtain information about metal pollution. Also, 6 surface sediments and water samples were collected from sampling points and analyzed for metals (Na, K, Mg, Ca, Al, Cr, Mn, Fe, Ni, Co, Cu, Zn, As, Cd, Sr, Ba, Pb) using Varian model Spectra AA 220 FS atomic absorption spectrometer. The average concentration of examined metals at the same sampling locations was in line with the order of Ca>Fe>Mg>K>Na>Mn>V>Zn>Ni>Cr>Cu>Co>Pb in sediment samples. Single element pollution index values, including geo-accumulation index (Igeo), contamination factor (CF) and enrichment factor (EF), were used to evaluate contamination with metals in the examined sediment samples.

scholarly journals Evaluation of Heavy Metal Pollution in the Suame Industrial Area, Kumasi, Ghana

2016 ◽  
Vol 6 (10) ◽  
pp. 56-63 ◽  
Author(s):  
Frempong Acheampong ◽  
John Wiafe Akenten ◽  
Rafiatu Imoro ◽  
Havor Richard Agbesie ◽  
Daniel Abaye
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Industrial Area ◽  
The United States ◽  
Soil Samples ◽  
Residential Areas ◽  
Limit Values ◽  
Industrial Areas

Background. Heavy metal pollution in industrial and residential areas in cities has become a public health issue in Ghana. Anecdotal evidence suggests that most industrial areas have elevated levels of heavy metals in soil. As a result of poor zoning and unregulated activities, large sections of seemingly industrial areas are also used as residential areas. There have been no studies on the levels of heavy metal contamination in such mixed activity locations. Objectives. The study was undertaken to identify possible heavy metals and their concentrations in soil samples collected from the Suame Industrial Area, Kumasi, Ghana. Methods. Soil samples were collected, processed and the concentration of copper (Cu), lead (Pb), zinc (Zn), cobalt (Co) and chromium (Cr) were analyzed using X-ray fluorescence (XRF). Results. The concentration of all metals exceeded the threshold limit values (TLV). They also exceeded the European Soil Bureau Network (ESBN) maximum allowable limits (MAL), and are therefore considered to be pollutants. The results, expressed as mean concentration±standard deviation mg/kg (percent above TLV) were Pb: 414.83±159.38 mg/kg (418.9%), Cr: 264.84±189.15 mg/kg (353.1%), Co: 68.15±34.12 mg/kg (227.2%), Cu: 265.82±80.53 mg/kg (354.4%) and Zn: 3,215.84±4,074.54 mg/kg (1,607.9%). Furthermore, the concentrations of Pb and Co exceeded the United States Environmental Protection Agency (USEPA) residential soil regional screening levels (RSLs). Conclusions. The elevated metal concentrations found in the present study demonstrate that the site is heavily polluted with Pb, Co and Cr. This is attributed to unregulated activities at the site; therefore, measures should be put in place to ameliorate the effects of potential heavy metal toxicity to workers, local residents and the environment. Re-zoning of activities and clear demarcation of residential and industrial areas is advocated.

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