Heavy Metals Water Pollution

Top PDF Heavy Metals Water Pollution:

Assessment of heavy metals pollution in water and lettuce samples at ouagadougou and its suburban, burkina faso

Assessment of heavy metals pollution in water and lettuce samples at ouagadougou and its suburban, burkina faso

This study allowed us to evaluate the environmental pollution of heavy metals in Ouagadougou (capital of Burkina Faso) and its suburban. Thus it brings to light the risks to consumer health. Indeed Ni and Cr in lettuce from Boulbi have critical risk levels threaten the health of consumers. As for the other trace elements in lettuce despite their concentration, when acceptable even though a regular monitoring is necessary given that the cumulative effect of these metals in soils may result in the long crop contamination from these sites. For drinking water constant monitoring will also identify a possible contamination linked to the pipeline system that may occur. Some precautions should be taken to avoid contamination of surface water that usually used for irrigation and for drinking water sources.
Show more

6 Read more

HEAVY METALS POLLUTION OF SOIL; TOXICITY AND PHYTOREMEDIATION TECHNIQUES

HEAVY METALS POLLUTION OF SOIL; TOXICITY AND PHYTOREMEDIATION TECHNIQUES

, which is an emerging technology, should be considered for remediation of contaminated sites because of its cost effectiveness, aesthetic advantages and long term applicability [13]. Phytoremediation can be defined as “the efficient use of plants to remove, metabolize various molecules in their tissues, detoxify or immobilise environmental contaminants in a growth matrix (soil, water or sediments) through the natural biological, chemical or physical activities and processes of the plants” [14], [15]. Various plant species have been identified and tested for their ability in uptake and accumulation of a variety of different heavy metals as Phytoremediation. To date, more than 400 species have been identified as metal accumulator [16]. Generally, plants show signs of stress when they accumulate high level of heavy metals. Thus, stressed plants may be a sign of metal contamination. However, some plant species are able to accumulate fairly large amounts of heavy metals without showing stress, which represents a potential risk for animals and humans. These plants that easily absorb high levels of metals from the surrounding soil are called hyperaccumulators. Take, for instance, dose of 5-ppm of Cd(II), Cr(VI), Cu(II), Ni(II), and Zn(II) has been reported to promote the root growth of alfalfa plants (Medicago sativa) by 22.0%, 166.0%, 156.0%, 63.0%, and 105.0% respectively. In addition, a dose of 5ppm of Cr(VI), Cu(II), Ni(II), and Zn(II) increased the shoot length in 14.0%, 60.0%, 36.0%, and 7.7%, respectively. A plant is classified as a hyper accumulator for heavy metal (s) when it meets the following criteria; (a) shoot/root quotient > 1, (b) extraction coefficient (level of heavy metal in the shoot divide by total level of heavy metal in the soil) > 1; extraction coefficient gives the proportion of total heavy metal in the soil which is
Show more

13 Read more

Impacts of Artisanal Mining on Some Heavy Metals Concentration in Surface Water in Kutcheri, Zamfara State North-Western Nigeria

Impacts of Artisanal Mining on Some Heavy Metals Concentration in Surface Water in Kutcheri, Zamfara State North-Western Nigeria

The interest in the environmental levels of heavy metals is a global one because of the potential hazards of these elements to the health of animals, humans and plants when they exist at elevated levels (Oyekunle et al., 2012). The escalating environmental contamination by heavy metals is of growing concern in Nigeria and Worldwide (Ezemonye ., et al 2005).A wide range of contaminants are continuously introduced into the aquatic environment mainly due to increased industrialization, technological development, growing human population, oil exploration and exploitation, agricultural and domestic wastes run-off (Lima et al., 2008). In his quest to satisfy his needs and aspirations for better living conditions through resource exploitation man has created an increasing number of environmental problems. He exploit nature, and in so doing distort the natural equilibrium which in turn have been proved to be harmful to to animals and man himself. Following the exploitation of land and water resources, various forms of pollution contributes to the degradation of the environmental quality.( Udiba. U., et al 2012) Water is indispensable. It is not only essential for the survival of man but also for other living organism (Asuquo ., et al 1998). It is an essential nutrient that is involved in every function of the human body and constitutes about two-third of the human body. The importance of water in our daily life makes it imperative that thorough microbiological and physio-chemical examinations be conducted on water. (Pavendan ., et al 2011,) Water for human consumption must be free from microorganisms and chemical substances in concentrations large enough to cause environmental imbalance and disease. The World Health Organization (WHO) estimated in 1996 that every eight seconds a child dies from a water-related disease and that each year more than five million people died from illnesses linked to unsafe drinking water or inadequate sanitation (Shivaraju H.P
Show more

9 Read more

Phytoassay of heavy metals pollution in roadside environment: bioindicators

Phytoassay of heavy metals pollution in roadside environment: bioindicators

Lead is a poisonous metal in human it is directly absorbed into the blood stream and is stored in soft tissues, bones and teeth (18). The main source of Pb is exhaust fumes of automobiles, chimneys of factories, road side vehicles pollution (19). The results of our analysis shows that there are significant difference for lead between sampling sites in control the polluted area. Results shows that soil tends to accumulate more Pb than grass and the highest Pb level found in the roadside soil was 140.10µg /gm while for Ficus 28.94µg /gm and for the grass it was 29.25µg /gm. The mean soil Pb level is 94.98µg /gm indicated considerable contamination of the metal in the roadside environment, where as local soil control has baseline level of 70.50µg/gm Pb. The lead deposited on the vegetation reaches the soil by rain water from the surface and also by the death and decomposition of the plant. When incorporated in the
Show more

5 Read more

EVALUATION OF LANDFILL POLLUTION WITH SPECIAL EMPHASIS ON HEAVY METALS

EVALUATION OF LANDFILL POLLUTION WITH SPECIAL EMPHASIS ON HEAVY METALS

For a long time, landfilling was the most com - mon waste management option. In many Europe - an countries, not to mention the rest of the world, this is still the case [Laner et al. 2012]. In several respects landfilling is the opposite of sustainabil- ity. Not only is it a waste of resources but landfills as such constitute a health hazard and an envi - ronmental burden [Ettler et al. 2008, Öman and Junestedt 2008, Kalčikova et al. 2011]. Organic waste biodegradation in landfills creates green- house gas called landfill gas. Water that enters the landfill forms leachate which can carry pollutants to the surroundings. Environmental problems re - lated to leachate include groundwater pollution and oxygen depletion and ecotoxicity in surface waters [Kjeldsen et al. 2002, Pablos et al. 2011, Modin 2012].
Show more

6 Read more

Benthic foraminifera as indicators of pollution by heavy metals in the eastern Mediterranean Sea

Benthic foraminifera as indicators of pollution by heavy metals in the eastern Mediterranean Sea

Schafer (1970) studied the distribution of benthic foraminifera in the Restigouche Estuary on the east coast of Canada. Several sewage outlets are located along both the eastern and western bank of the estuary, the Belledune Company and the Dalhousie Power Plant have the two largest fall-outs within this estuary. Temperature, pH, salinity, phosphate, and dissolved oxygen values of bottom water and sediments were measured. None of these factors seem to have been crucial with regard to the distribution of benthic foraminifera as the values were typical of an estuarine environment. However, the pH of water and pore water of the sediments were acidic (6 and 4.4 respectively) at the discharge point of the Belledune Fertiliser Company. The fauna was categorised into two groups, namely, those which inhabit the inner part of the estuary close to the discharge point and those which inhabit the offshore part of the estuary. Elphidium incertum was the most abundant at the edge of the "sterile zone" (the biotic zone, or the dead zone, (i.e. the zone just below the effluent discharge point where no living foraminifera have been observed) in the vicinity of the discharge point. Schafer (1970) further noted that the abundance of E. incertum decreased both in the inner and the outer part of the estuary with distance from the effluent source. Hence Schafer {op. cit.) concluded that this species was pollution tolerant. Those species which were poorly represented near the fall-out, included Ammomarginulina fluvialis, E lphidium frig id u m , H em isphaeram m ina sp.,
Show more

378 Read more

Impact of Surface Water and Groundwater Pollutions on Irrigated Soil, El Minia Province, Northern Upper Egypt

Impact of Surface Water and Groundwater Pollutions on Irrigated Soil, El Minia Province, Northern Upper Egypt

Current research has been focused on heavy metals pollution in surface water and groundwater and effect on irrigated soil from El Minia Province, north Upper Egypt. Concentration of heavy metals (e.g., As, Co, Hg, Ni, Se, Cd and Cr) in surface water, groundwater and irrigated soil samples is most significantly affected by leachate of many pollutants as the factories, agricultural activities, urban and natural processes. Microbiological parameters and microscopic investigations are re- vealed that some localities are common by micro-organisms, which are unsuitable for drinking waters.
Show more

6 Read more

Distribution and Accumulation of Heavy Metals in Surface Sediment of Lake Junín National Reserve, Peru

Distribution and Accumulation of Heavy Metals in Surface Sediment of Lake Junín National Reserve, Peru

Sediments play a fundamental role in the cycling of heavy metals in the aqua- tic environment; they are involved in the transport of many nutrients and pollu- tants. They also mediate their uptake, storage, release and transfer between en- vironmental compartments. The liberation of heavy metals from the sediment to the water column will depend on the chemical fractionation of the metals, the pH of the sediment, and the physical and chemical properties of the water [3]. Determination of the spatial distribution of heavy metals in the sediment is es- sential to provide information on pollutant sources and to prioritize mitigation strategies. To date, various methods have been developed to determine the de- gree of pollution, safeguard the health status of the aquatic system and facilitate ecological risk management. The most commonly used indices in sediment pol- lution studies are the geoaccumulation index (Aegean), the enrichment factor (EF), the pollution factor and the pollution load index ( PLI ) [6] [7].
Show more

16 Read more

Status Assessment of Heavy Metals in Water of the Lepenci River Basin, Kosova

Status Assessment of Heavy Metals in Water of the Lepenci River Basin, Kosova

Water quality assessment can be carried out in various ways. In 1965, Horton was the first to formulate a water quality index which was then used by many researchers for different types of water. A very powerful tool to this end is the Water Quality Index (WQI). WQI serves to sum up large amounts of water quality data in simple categories (good, bad) for management and pub- lic reporting [Durmishi et al., 2012]. Research- ers use different types of indices. The index aims at transforming numerous water quality data to simple, understandable, and usable information for the public. WQI represents a number from 0 to 100 where a higher value means better water quality and vice versa. The aim of the paper was to assess the level of heavy metal concentrations in water that will focus on the pollution status of the Lepenci river.
Show more

14 Read more

Evaluation of heavy metals concentration in some aquatic plants as biomarkers for water pollution

Evaluation of heavy metals concentration in some aquatic plants as biomarkers for water pollution

This study emphasizes the predictive ability of aquatic plant as bio monitoring agents of water exposure to pollutants (especially heavy metals) in some rivers passes through Jallawla, Hemrin and Al- Wajeehia cities in Diyala province, Iraq. Chemical profiling of five heavy metals (Fe, Ni, Co, Cd, Pb) was under taken in tissues of two aquatic plants (Ceratophyllum demersum and Myriophyllam spicatum). The sample was collected during November and December 2013. Concentrations of these elements was determine using atomic absorption spectrophotometer. The result showed that the concentration of Fe , Ni , and Co were 7.597 ppm , 0.773 ppm and 0.428 ppm, respectively while the study was not recorded any concentration for Cd and Pb in all studied area.
Show more

5 Read more

Heavy Metal Pollution of the Environment by Dumpsites: A Case of Kadhodeki Dumpsite

Heavy Metal Pollution of the Environment by Dumpsites: A Case of Kadhodeki Dumpsite

This research wishes to acknowledge Mr. Kangethe and Mrs. Lydia from the Ministry of Agriculture Dagorreti division who accompanied us as we collected the laboratory samples. Kenya Bureau of Standards (KEBS) and the Institute of Nuclear Science University of Nairobi for the analysis of heavy metals in the soil and water samples respectively. The PRIME_K PROJECT, Grant No: IR24TW008889 which gave some authors of this manuscript some tips in manuscript writing.

7 Read more

Water quality and sediment analysis at selected locations of Pavana river of Pune district, Maharashtra

Water quality and sediment analysis at selected locations of Pavana river of Pune district, Maharashtra

Ground water is an essential and vital component of our life support system. The ground water resources are being utilized for drinking, irrigation and industrial purposes. There is growing concern on the deterioration of ground water quality due to geogenic and anthropogenic activities. Thus, Freshwater has become a scare commodity due to over exploitation and pollution [22]. Uncontrolled domestic wastewater discharge into pond has resulted in eutrophication of ponds as evidence by substantial algal bloom, dissolve oxygen depletion in the subsurface water leads to large fish kill and other oxygen requiring organism [23]. The natural and human activities over the years have contributed towards continuous built up of toxic metals in water bodies. Human activities such as mining and smelting of metals, electroplating, gas exhaust, energy and fuel production, fertilizers, sewage and pesticides, municipal waste generations are contributing for heavy metal pollution [24] which has become one of the most severe environmental problems today. The content of heavy metals in river bottom sediments is often used as an indicator of their anthropogenic pollution [25]. In most of the rivers contaminated sediment has become one of the most environmental issues. Both natural and human activities effect the composition of the sediment [26]. It is also well known that river bottom sediments are not only sinks for heavy metals but also their sources. Though some of the metals like Cu, Fe, Mn, Ni and Zn are essential as micronutrients for life processes in plants and microorganisms, while many other metals like Cd, Cr and Pb have no known physiological activity, but they are proved detrimental beyond certain limit [27]. Monitoring these metals is an important task for safety assessment of the overall environment.
Show more

12 Read more

ABSTRACT: The ever-increasing environmental pollution in agricultural soil caused by pollutants and heavy metals

ABSTRACT: The ever-increasing environmental pollution in agricultural soil caused by pollutants and heavy metals

The sampling has done in Kota throughout the year so that climate variation has also been observed on pollutants loads it is a part of research work. The study is basically focused on industrial effluents which are contaminating the soil as the industrial effluents in Kota found passing through the agriculture areas where the intensive agriculture activities is carried out by farmers. The agriculture area extensively affected by the industrial waste water especially in rainy season the flow of slurry waste water in Raipura region of Kota become a serious problem and become a flooded area with waste water.
Show more

5 Read more

Determination of Heavy Metals Pollution in Tobruk Bay

Determination of Heavy Metals Pollution in Tobruk Bay

It was found that the concentration of heavy Metals in drinking water for the city of Tobruk was much higher than the permissible values, which were determined by the World Health Organization and the Libyan specifications for drinking water. A study of these results showed that drinking water is contaminated with heavy Metals due to contamination of the waters of Tobruk Bay, which is considered the feedstock of the drinking water production plant. The high concentration of heavy Metals in drinking water is higher than the permissible limit, causing health problems in people who use this water. We illustrate some of the health effects of heavy metal contamination in these people as shown in the table 3.
Show more

6 Read more

Determination of Heavy Metals in Fish and Water of White Nile During Watery Diarrhea Outbreak from June to July, 2017, Gezira Aba – Sudan

Determination of Heavy Metals in Fish and Water of White Nile During Watery Diarrhea Outbreak from June to July, 2017, Gezira Aba – Sudan

Abstract: The objective of this study was to determine the concentrations of some heavy metal in fish (Clarias gariepinus) and water samples collected from White Nile at Gezira Aba. Heavy metals in fish and water samples were analyzed using Atomic Absorption Spectrophotometer (AAS) in accordance to standard analytical method. Data obtained were subjected to statistical analysis (ANOVA) to find out the significant difference of heavy metals in water body throughout the sampling period and in each organ of the sampled fish. The obtained results showed the average values Fe, Pb, Co, Cd in water samples were higher than WHO guide line limit for fresh water. The analysis of heavy metal in fish organs indicated that among eight heavy metals tested, Fe showed the highest concentration followed by Fe, Pb, Mn, Cu, Zn, Co, Cd and Cr. Results also showed that accumulation of heavy metals differed in the organs. Gill recorded high level of heavy metals followed by kidney, while liver contain lower level. It was concluded that levels of heavy metal in fish organs showed high concentration of detected heavy metals, while water samples give low heavy metals concentration. This implies that, the fish sample can be used to monitor heavy metals pollution level in the White Nile River. More safe and economic methods for elimination of heavy metals from contaminated waters are needed and continuous assessment of the level of pollution of Nile water and fish with heavy metals is also necessary.
Show more

6 Read more

Some problems relating on oil pollution in maritime operation

Some problems relating on oil pollution in maritime operation

In order to meet the growing demand for domestic and export fleets, many large shipyards have been upgraded, expanded and equipped with state-of-the-art technology - and this has also increased coastal and marine pollution. From the shipbuilding and repairing process, the pollution is mainly heavy metal in the form of oxide powder such as lead oxide Pb3O4, Pb2O3, PbCrO3, copper oxide powder, zinc oxide powder, Fe2O3, TiO2, ZnCrO3; cellulosic paint (-C3H7O2 (OH-) 2, epoxy (CHOCH) paint, phenolic formaldehyde (-C6H5O-) paint, environmental alkyd (- CHO) paint. gasoline, fuel used much, causing considerable amount of waste oil in the construction phase. All heavy metals: Zn, Cu, Hg, Cr are found in water and sediments, which are highly toxic, very stable and active metals in the marine organism, the food chain and its negative impact on human growth and health. These wastes pollute mainly the coastal waters, oil pollution and sediment pollution (heavy metals) in the areas where shipyards and shipyards are located. These wastes alter the physicochemical properties of water, which directly affects aquatic and marine animals and plants as well as hinders the development of a number of marine industries, salt making, aquaculture and coastal torism.Boat repair also generates large amounts of dust when spraying sand or copper slag to clean the hull. This dust also contains many toxic chemicals for both humans and aquatic organisms. Asbestos dust, glass wool used in insulation on ships can persist for days in the human body, wading into the joints, accumulate in the pleural cavity is capable of causing cancer to humans. According to the statistics of Lloyd's Marine Information System, the world fleet of ships has nearly 100,000 registered and active in the world. The average life expectancy of ships
Show more

7 Read more

Seasonal Variations Of Heavy Metals Concentrations In Sediment Samples Around Major Tributaries In Ibeno Coastal Area, Niger Delta, Nigeria

Seasonal Variations Of Heavy Metals Concentrations In Sediment Samples Around Major Tributaries In Ibeno Coastal Area, Niger Delta, Nigeria

ecosystem located near major urban centers and contribute to the increase of the concentrations of heavy metals in these environments [21]. More and more attention has been drawn due to the wide occurrence of metal pollution in aquatic system. Some heavy metals may transform into the persistent metallic compounds with high toxicity, which can be bioaccumulated in the organisms, magnified in the food chain, thus threatening human. Among environmental pollutants, metals are of particular concern; due to their potential toxic effect and ability to bio accumulate in aquatic ecosystems [8]. Considering of the use of some rivers and lakes as water supplies, threats are thus posed on human health via drinking water, polluted vegetable, foodstuff and disruption of the natural environment. Understanding the dynamics of the environment through chemical assessment of heavy metals in environmental matrix is crucial in determining pollution status of the environment. The objective of our study was to investigate the impact of a crude oil exploration and exploitation in sediment with respect to heavy metals pollution by: determining dry and wet seasons concentration of heavy metals in surface sediment of tributaries around qua Iboe Rivers coastal area and comparing metal concentrations in sediment with standards for sediment quality, and relevant recorded in literatures.
Show more

12 Read more

Diffuse Heavy Metals Pollution in Central India

Diffuse Heavy Metals Pollution in Central India

The central India plateau is environmentally very important to understand the rich Indian bio-diversity and diffuse chemical pollution. It is well known that India is a densely populated country, very large fractions of this population live in rural communities, and very large parts of the total area are under agriculture and cattle population. Concentration over pollution sources in integrated water and air quality management has growing recently. There are many small sites which can release pollutant to ground water, and they usually do, this is because on average, the management of chemical on small sites is worse and less regulated than on sites owned by large, sometime multinational, companies. Even though the sites are small, they are large in numbers. Acting together, these many point sources can be considered to be equivalent to diffuse pollution [1].
Show more

9 Read more

Journal of Environment Pollution and Human Health

Journal of Environment Pollution and Human Health

serious issue, mainly in of developed countries around the world, because they bioaccumulate and cause diseases when they enter the body of the organism including humans that feed on them. Severe imbalances of metal proportions caused by exposure to elevated concentrations of these elements can induce death of organisms [4] and adverse health effect on human and the environment [14]. The effects of heavy metals on the environment actually depends on several factors such as concentration of the metals in the sediments, the forms of existence of the trace metal in the sediment, as well as sediment and ground water chemistry [6]. As a result of the deleterious effects and concern it amounts, various researchers and environmentalist all across the world and in particular Nigeria has put together efforts and pay more attention to study the nature and concentration of heavy metals in sediment and suggested measures to combat the increasing level of
Show more

13 Read more

Physicochemical, heavy metals and microbial pollution of surface and ground water in bodija Municipal Abattoir and its Environs

Physicochemical, heavy metals and microbial pollution of surface and ground water in bodija Municipal Abattoir and its Environs

Shallow wells surrounding abattoir sites are vulnerable to pollution from abattoir activities since the effluents may percolate into the soil and enter into the aquifer; whereas residents may not be aware of the health risk, as the water sometimes appears clean and potable for consumption. Assessing the water quality within the vicinity of abattoirs in residential areas will help to evaluate the risks on the health of residents who depend on the well waters for consumption and other domestic uses. However, this study analyzed the surface and ground water samples, by assessing the physiochemical properties, heavy metal concentrations and bacteriological constituents of selected wells within Bodija abattoir and its environs. This is very important because municipal/tap water is unavailable in the residential neighborhood of Bodija abattoir and people mostly dependent on wells as their readily water source.
Show more

6 Read more

Show all 10000 documents...