Bioremediation In Arabidopsis Essay

2451 words - 10 pages

Background
Arsenic pollution is a real problem with over 560 superfund-contaminated sites in the US, second in number of sites only to lead. (2) This problem is so vast the EPA wrote a whole manual on how to effectively treat the problem. The way that arsenic pollution can happen is through major excavations, most commonly in mining materials like coal, various metals, and also from pressure treated wood. Chromated copper arsenate was the chemical used on pressure treated wood starting in the 40’s. Since the 70’s this was the main treatment for wood used in home building, decks, railings, and children’s play structures until a recent ban on its widespread use. There is an estimated 600,000 metric tons of arsenic contained in wood products that have been treated in residential and commercial settings in the US alone. (8) In mining pollution, the Arsenic sits in bedrock bound to constituent molecules but when bedrock is disturbed arsenic is agitated and broke free. (7) The inorganic form is broken free in its various valence states. These valence states react with other organic molecules forming different organoarsenic structures. These different inorganic forms Arsenate and Arsenite then can become mobile through different organisms or physical transportation means. (4) The most common way for it to infiltrate soil is through runoff. This creates a growing risk when it comes to water, soil, and crops in near lying areas. This then becomes the responsibility of farmers, pedestrians who drink the water, and government agencies that regulate acceptable levels to figure means to clean or avoid the contamination.

Traditional Solutions
The traditional way to clean up arsenic is to remove the contaiminated medium whethrer it be water or soil, through pumping or excavation then once it is isolated it would either be filtered and disposed of or incernerated and colledted. This is invasive, time consuming, inefficient, and also requires skilled technicians. There is a report put out by the epa that chronicles all these procedures then it also mentions technology and engineering of living organisms and the ways they can be used In Situ to help clean superfund sites.
Recently the acceptable level of arsenic for puplic water was changed from 0.050 mg/L to 0.010 mg/L creating a more pressing need to develop alternative methods. The most current mmethod for water treatment on a large system is precipitation/coprecipitation. This method works well with Arsenic as well as other heavy metals but in not as cost effective. Ion exchange is also utilized in water treatment but only practicle for smaller treatments. In soil applications solidification and stabilization is the method used. This treatment immobilizes Arsenic and reduces the leachability of arsenic. Pyrometallurgical processing is another method but is more costly due to having transport the soil to the site of the incinerator.

Rationale
The rationale for using genetic engineering...

Find Another Essay On bioremediation in arabidopsis

Psychological Egoism Theory Essay

2240 words - 9 pages The theory of psychological egoism is indeed plausible. The meaning of plausible in the context of this paper refers to the validity or the conceivability of the theory in question, to explain the nature and motivation of human behavior (Hinman, 2007). Human actions are motivated by the satisfaction obtained after completing a task that they are involved in. For example, Mother Teresa was satisfied by her benevolent actions and

How Celtic Folkore has Influenced My Family

1587 words - 6 pages Every family has a unique background that influences the way they live and interact with other people. My parents, who emigrated from Ireland to the States with my three brothers in 1989, brought over their own Celtic folklore and traditions that have helped shaped the way our family operates and lives. One aspect of folklore that has helped shape my family dynamic is the Celtic cross—both its background and what role it has played in our lives

Julia Margaret Cameron

1406 words - 6 pages At a time when women were looked upon as being homemakers, wives, mothers and such the late 1850's presented a change in pace for one woman in specific. Photography was discovered in 1826 and soon after the phenomenon of photography was being experimented with and in turn brought new and different ways of photo taking not only as documenting real time, but also conceptualizing a scene in which an image would be taken. Julia Margaret Cameron will

Evaluation of School Improvement

1403 words - 6 pages The evaluation process should be progressive to incorporate overall planning, implement changes, which contribute to success. In order to focus on school climate and norms, the evaluation design must include the students, instructions, and outcomes to improve communication and building-level concerns to be address in this response. School Climate and Social Norms The school principal, other staff leaders, and personnel set the tone and the

Case Study: The Benefits of Animal Testing

1757 words - 7 pages Nine year old Amy has already had a rough start in life. She was born with an abnormal heart that hinders her everyday activities. Amy is unable to keep up with kids her own age because she often tires out easily. As a consequence, she has very little friends and is often alone. Amy is forced to take different medications everyday just to survive. Amy’s life consists of medicine, doctors, and constant hospital visits. However, Amy is due for a

Myth and Magic: Realism in "One Hundred Years of Solitude"

1531 words - 6 pages “He enjoyed his grandmother's unique way of telling stories. No matter how fantastic or improbable her statements, she always delivered them as if they were the irrefutable truth” (Wikipedia, 2011). Experiences are particular instances of one personally encountering or undergoing something and in these moments of time life changes for the best or the worst and memories are formed. These recollections such as riding your first bicycle, going to

Adiponectin: a Novel Indicator of Malnutrition and Inflammation in Hemodialysis Patients

2384 words - 10 pages Objective Protein-Energy malnutrition (PEM) and inflammation are common and overlapping conditions in hemodialysis patients which are associated with increased risk of morbidity and mortality. Adiponectin is an adipocytokine which is exclusively produced by adipose tissue. Few studies in hemodialysis patients have demonstrated that serum levels of adiponectin were significantly higher in malnourished patients compared to well-nourished ones. The

The Congo Free State: A Legacy of Apathy, Exploitation and Brutality

2298 words - 9 pages Between 1885 and 1908, Belgium’s Leopold II ruled Congo, a region in central Africa, as his personal colony, exploiting the resources and inhabitants for his own gain. Leopold allowed and encouraged Europeans and other Westerners to enter Congo and set up companies whose primary purpose was to gather rubber, which was abundant but difficult to get to in the Congo, using the Congolese as the laborers for the Europeans. Rubber gathering in Congo

Selective Exposition in The Lottery, by Shirley Jackson

1073 words - 4 pages despite Jackson’s omission of details in The Lottery, she manages to create an overtone of mystery that compels the reader to grasp the world of the story rather than define it in terms of the physical world and form their own opinions. Often in stories, setting is a key element, and that the more detailed the setting, the more believable the world of the story is. Jackson does not follow this style in her story; the only real information

Lightning

1857 words - 7 pages INTRODUCTION I remember when I was a young child; I would always be scared whenever there was a severe storm outside that included thunder and lightning. This was especially true in the hours of darkness, when you could really see the lightning. As I grew older this so-called fear of lightning turned into a fascination for this weather phenomena. One of my most vivid memories of lightning as a young man was when I was flying to Florida, the

Maryland's Ecology and Environment

1130 words - 5 pages Maryland is the 42nd largest state, making it one of the smaller states in America. It is located in the South Atlantic region on the United States eastern seaboard. Prince George's is one of twenty four counties in Maryland. It is also the geographic center of the state. Maryland has a varied climate. The state is home to a variety of different ecosystems. This is also true of Maryland’s environment, which has the Atlantic Ocean

Similar Essays

When The Bubble Burst Essay

1539 words - 6 pages By the time I arrived state side from my second tour in the Middle East the housing bubble had already burst. I noticed a drastic change in the way that many of my friends and family were living. Several of my friends that worked in real estate had sold their boats and seconds houses. My own stock portfolio had lost a third of its value. My sister and her husband had defaulted on their home mortgage leaving them scrambling for a place to live. I

Phase Diagram Essay

4456 words - 18 pages Introduction: Chemical equilibrium is a crucial topic in Chemistry. To represent and model equilibrium, the thermodynamic concept of Free energy is usually used. For a multi-component system the Gibbs free energy is a function of Pressure, Temperature and quantity (mass, moles) of each component. If one of these parameters is changed, a state change to a more energetically favorable state will occur. This state has the lowest free energy

Revolutionary Work Of Art Essay

1890 words - 8 pages Walter Benjamin emphasizes in his essay, “The Work of Art in the Age of its Technological Reproducibility” that technology used to make an artwork has changed the way it was received, and its “aura”. Aura represents the originality and authenticity of a work of art that has not been reproduced. The Sistine Chapel in the Vatican is an example of a work that has been and truly a beacon of art. It has brought a benefit and enlightenment to the art

Enlightenment Thought In New Zealand Schools

1594 words - 6 pages In this essay I will be looking at how the political and intellectual ideas of the enlightenment have shaped New Zealand Education. I will also be discussing the perennial tension of local control versus central control of education, and how this has been affected by the political and intellectual ideas of the enlightenment. The enlightenment was an intellectual movement, which beginnings of were marked by the Glorious Revolution in Britain