Assignment 1 Slot: F2
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ASSIGNMENT 1: TOPIC: RECENT TRENDS ON PURIFICATION OF SEA WATER COURSE: Engineering Chemistry COURSE CODE: CHY1001 SEMESTER: Fall semester 2015-16 FACULTY: Dr. Rajasekhara Reddy Sabasani
Name: Sarthak Tandon Reg. No. : 15BCE0692
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Contents: 1. Abstract 2. Introduction 3. Recent developments in sea water systems 3.1. New trends, new technologies! 3.2. Advanced seawater treatment 4. Some recent techniques for sea water treatment 4.1. Reverse osmosis (R.O) desalination 4.2. Ion exchange method 4.3. Activated carbon method
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Some recent techniques for sea water treatment
Sea water has to be desalinated using several techniques to make it edible and to be used for irrigation. New developments and trends in desalination have come out in the past years which help in effective and easy treatment of sea water. Some of these methods are listed as follows: 1. Reverse osmosis (R.O) desalination:
This is a process of high pressure membrane which is capable of eliminating bacteria, viruses, dissolved salts and organic matter from liquids. This process is called the reverse osmosis process because it requires very high pressure to force the pure water across a membrane and leaves the impurities behind. The plant membrane systems of the process of reverse osmosis typically use much less energy than that of the thermal distillation process, which has resulted in a reduction in the overall desalination costs over the past decade. The desalination of sea water remains energy intensive, and its future costs will continue to depend on the cost of both energy and desalination
Considering the fact that Marc has both been sweating and drinking minimal amounts of water, Marc is now dehydrated. This means he has less than the required amount of water for his body to complete the processes necessary to maintain its health. As stated in the question, the process of sweating causes the loss of more water than solutes. This means that as the level of water decreases, the level of solute concentration will increase, creating a change in the water to solute ratio.
Recently, water shortage problem becomes more and more serious in the world [1]. The desire to make a drinking water by treating a ground water, a surface water, a sea water and so on has been increasing. An electrodialysis (ED) is one of the useful methods and has applied to make the drinking water as well as RO and NF membranes [2~5].
Theatre as a unique, live art form does not only consist of theatrical performances that tell stories, but are significant as to how they cover certain topics that portray issues within the world. Because of this, theatre is an art form that can be used as a platform to discuss and bring awareness to issues that affect one’s community. The play, In the Red and Brown Water by Tarell Alvin Mccraney follows the upcoming of age story of Oya, a young African-American woman, that struggles to find her true self and identity within the projects of San Pere, Louisiana. With the presence of Yoruban tradition, In the Red and Brown Water explores the themes of poverty and racial injustices among minorities through the distinctive use of design clues,
In this paper I will argue that, whether or not we have a moral duty to rescue in the “shallow pond” case, we have a moral duty to donate our money, when it is of no morally significant cost to us to do so, to save the lives of faraway strangers in need. I will explain all these cases in brief in the coming paragraphs and discuss what my opinion is.
Nearly 10 years after hurricane Katrina ravaged through the city of New Orleans and surrounding areas in southern Louisiana, the city is still struggling to recover from the $108 billion caused by damage. Nominated for Academy and Emmy awards, the captivating documentary Trouble The Water analyzes the consequences played both during and following the disastrous events during hurricane Katrina. Such events are displayed using the sociological perspective —the perspective on human behavior and how it connects to society— to understand how poverty, social class, and racial issues are valued in different areas of the United States, especially in these troubled areas. Trouble the Water explores these issues of race, class, and the relationship of
Since fresh pure sea water is not readily accessible, the easiest water source for the majority of hobbyists is the faucet. However, the tap water that comes from the local water treatment plants may be safe for human consumption but is most likely toxic to marine life. Water treatment plants remove most of the harmful chemicals, but the water delivered is anything but pure. Often this tap water contains high levels of phosphates and nitrates that can be harmful to aquarium inhabitants. Also, copper may leach from pipes, and it is deadly to marine invertebrates (Goldstein 8). This leaves very few options for water to the hobbyist. One of the last, and probably the best option for obtaining a pure water source is by using reverse osmosis water.
Osmosis is a very important process which enables plants to support themselves by absorbing water and minerals through a partially permeable membrane. Plants are often surrounded by a film of water and a solution. Cell membranes often separate the two and Osmosis will occur. Hot water diffuses and enters at a faster rate because there is more energy whereas cold water enters at a slower rate because there is less energy. What do we have to do?
There are several different levels of purification, so the water can be reused for diverse purposes. Through only low levels of purifications treatments water can be reused for landscape, golf courses, and agricultural purposes. After intensive processing waste water can be used to supplement our drinking water supply. At the beginning this process the water is filtered to remove any large pieces in the water. Following that the water is then allowed to sit to and let small items sink to the bottom. For the items in the water that were not filtered out, or were able to sink are filtered out through the use of chemical reactions. The chemical processes used are called flocculation and coagulation. This process is used to clump together the particles that were to light to sink on their own. Some common compounds that are used to carry out these processes are aluminum sulfate, poly-aluminum chloride, ferric chloride, and ferric sulfate. During this process the chemical compounds react with the ions in the water to create precipitates; when the precipitate forms it will gather all of the particles in the water that were not able to sink on their own, and then both of the materials will settle to the bottom of the
Industrial pollution is a large contributor to the pollution of our vast oceans. In 1996, 1.5 million cubic meters of industrial w...
The evolution story of Ocean Basket has the hallmarks of early humble beginnings to now being a seafood franchise restaurant playing in the big leagues.
Richardson, S. Water Analysis: Emerging Containments and Current Issues. Journal of Analytical Chemistry. 2003, 75, 2831-2857.
The process of disposing waste, producing food, and purifying bodies of water is useful today. For example, communities that live in the desert, like in the southwestern United States and in the Middle East, can use this process to farm and survive. They can use the newly purified water for their crops or for their own consumption. In addition, when algae purifies water, it releases oxygen.
Seawater scrubbing system – This is using the natural alkalinity of sea water ti aboarb acidic gases. The flue gases are trapped in a abosrbtion tower. This is where they flow aginst a current of sea water
Slightly lower than fresh water, its density is slightly higher, its electrical conductivity is much higher, and it is slightly basic. we cannot used brine water for domestic purpose. So it is needed to convert it into soft water. In this paper we observe the techniques of softening water. Seawater is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of approximately 3.5%, or 35 parts per thousand. This means that for every 1 litre (1000 mL) of seawater there are 35 grams of salts (mostly, but not entirely, sodium chloride) dissolved in it.
Water plays such an important role in our daily lives. 70% of our body is composed of water. 70% of the earth surface is also made up of water, but out of the 70%, only 1/3 of water is consumable. In fact, this amount has been continuously to decrease as more and more industries began to pollute and damage the water. For example, many toxic chemicals may be released into the water thus making the water impure. Such pollutions and damages lead the water to be contaminated and inconsumable as it may cause severe diseases. Water purification can remove all the unnecessary bacteria and viruses from the water that is hazardous for our health. Water purification may also improve the flavor and appearance of water. It removes the unpleasant odor. Therefore, water purification became one of the most useful and popular process used by people all over the world today. It is by far the most recommended and safest water treatment that is commonly used to purify damaged water into consumable water. Water purification provides us with safe, pure and clean water to consume and use.