How the chemicals are being disposed of should be monitored (Howells). Marcellus Shale drilling is a dangerous process with many consequences. The Marcellus Shale industry is said to create new jobs and be a source of “clean” energy (Environmental) (Griswold). However, this process uses hundreds of deadly chemicals, it causes pollution, and it has few regulations. A solution to these negative consequences would be to create and enforce more regulations.
Certain metals could be affected by the pH of water. This, however, could reflect on real life situations that could affect us, the environment, and also our pipe system as well. Some metals such as iron and steel oxidize when they are exposed to humidity and water thus forming corrosion known as ferric oxides (Roy, 2009). Corrosion has destructive potential if left untreated (Stahl, 2005). Knowing what metals are prone to corrosion is an important issue to take notice about because corrosion happens all around us including possessions that belong to us.
“Water pollution affects plants and organisms living in these bodies of water. In almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities.” (Conserve-Energy-Future) Rivers, streams, canals, lakes, and oceans are receptacles for every imaginable kind of pollution. Even though water has the capacity to break down or dissolve many materials, especially organic compounds, pollution in our bodies of water are becoming a large problem. Pollutants such as metals, plastics, and some chlorinated hydrocarbons remain in the water and can make it poisonous for most forms of life. Even biodegradable pollutants can damage a water supply for long periods and the life forms within the water start to suffer damage due to pollution.
Through industrial and consumer waste, heavy metals can enter a water supply or even from acidic rain breaking down soils and discharging heavy metals into streams, lakes, waterways, and groundwater. Some overwhelming metals incorporate: • Lead (Pb) • Mercury (Hg) • Chromium (Cr) (in spite of the fact that just the structure Cr(vi) is dangerous) • Zinc (Zn) • Copper (Cu) • Arsenic (As) • Nickel (Ni) • Cadmium (Cd) A few of these components are necessary for human health, and are useful when taken into the form in nourishments or as supplements at suitable, low levels. Alternately, cadmium, lead and mercury have no known living capacity and are lethal to people. Dis... ... middle of paper ... ...(mercurous chloride, Hg2cl2) is utilized as a standard as a part of electrochemical estimations and in medication as a laxative. Mercuric chloride (destructive sublimate, Hgcl2) is utilized as an insect spray, in rodent poison, and as a disinfectant.
Heavy metals are non-biodegradable and will accumulate in the environment. High concentrations of heavy metals beyond threshold limits pose high risks to the environmental and human health. Apart from mining, other anthropogenic sources of heavy metals include smelting, electroplating, the use of pesticide and fertilizer in agriculture, industrial discharge etc. Should heavy metals enter the food chain through soil contamination they can cause adverse health problems such as lead poisoning, kidney and brain damage. Over the past few decades there have been increasing interests in development of technologies for the remediation of contaminated soils.
Most of the heavy metals are toxic or carcinogenic in nature and pose a threat to human health and the environment (Shakibaie et al., 2008; Vinodhini and Narayanan, 2009). Several conventional methods are used for the removal Heavy metals from wastewater includes chemical precipitation, ion exchange and reverse osmosis etc. but major drawbacks with such treatments are produces large amount of sludge and may be ineffective or expensive processes. So, the search for a new, simple, effective and ecofriendly technology involving the removal of toxic heavy metal from wastewater has directed attention towards phytoremediaton( Divya Singh et al., 2012).According to UNEPPhytoremediation can be defined as “the efficient use of plants to remove, 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”. The ideal plants for phytoremediation should possess the ability to tolerate and accumulate high levels of heavy metals in their harvestable parts, while producing high biomass.
Some metals like Pb, Cd, Ar are very toxic and cause serious risk to all biota. They bio accumulate in to the tissues of living organism and become the part of food chain. These are dangerous even at very low level. Anthropogenic sources have increased metal ions concentration in atmosphere. Instruments that are used for atomic spectroscopy is either atomizer.
They exist in Chemicals, fuel, batteries, and waste materials. Most of the heavy metals can be poisonous to humans, plants, and animal at high concentrations due to information of complex compounds inside the cell. The heavy metals differ from the organic pollutants, they cannot be bio degraded. They persist indeterminately and cause pollution of water, soil, and air. It is important to know more facts about the heavy metals, the problems presented by disposal and recycling of heavy metals, their dangerous effects, and their containing products.
Metals are inorganic form of contaminants whose extensive use has caused significant environmental pollution that mainly affects soil, watercourses, atmosphere and living systems (Kasassi et al., 2008). Mercury, lead, cadmium and chromium (VI) are considered as toxic metals; whereas, copper, nickel, cobalt and zinc are not as toxic, but their e... ... middle of paper ... ...displaying synthetic phytochelatins. Biotechnol Bioeng.70:518–24. Majare, M. and Bulow, L. (2001): Metal-binding proteins and peptides in bioremediation andphytoremediation of heavy metals. TIBTECH.
Nutrient pollution also can cause algae blooms which cause serious environmental problems affecting aquatic ecosystems, and which can cause dangerous health issues for animals and humans. Water pollution caused by sewage is an environmental problem. When sewage pollutes water it can be dangerous especially if it enters people 's source of drinking water as author Woodford states, "It is possible to catch illnesses such as hepatitis, typhoid, and cholera from river and sea water" (4). Chemical and radioactive runoff can be dangerous to humans as well. When water that is contaminated by chemicals is consumed by humans it can lead to sickness, paralysis or even death depending on the kind of chemical polluting the water and the concentration of the pollutant in the water.