Essays on Reverse Osmosis

There are many pros and cons of using waste water for drinking and agriculture. Waste water in untreated form is normally used in agriculture since many centuries all over the world. Wastewater use in agriculture can be observed as both a benefit, providing water and nutrients for the cultivation of harvests and confirming food supply to the cities, and also as the cause of pollution; a threat that affects the health of users, and the environment. Wastewater causes diseases as it contains microorganisms, viruses and parasites, and cannot be considered safe for drinking. Wastewater for irrigation affects the land ...

Abstract

Application of the nanofiltration (NF) and ultrafiltration (UF) processes is applied in the handling of water that is produced raw. The application has been investigated in the current day through various studies (Wang 14). The experiment of the processes of both nanofiltration and ultrafiltration is conducted in the laboratory unit which is operated in a pattern of cross flow (Ashaghi, Ebrahimi, & Czermak, 46). The study that was conducted in Oilfield of North Sea using the process of membranes of ultrafiltration (UF) and microfiltration (MF) indicated that the content of hydrocarbon decreased from 50 mg/l to 2 mg/l which recorded ...

The new thing about the Dow filtration process is: it is only half as expensive as desalinating sea water to make it drinkable. This could serve as an economical substitute for imported or desalinated water. With water becoming a precious commodity world over, the unique technology introduced by Dow can be comfortably practiced wherever man lives as a community, and of course, generates waste water. The uniqueness about Dow’s filtration process is the precision of the reverse osmosis membranes that are able to filter even the filthiest wastewater discharged into streams by industries and households. The most novel ...

Question 1: reasons why references are used for technical or academic writing

In technical and academic writing, referencing may be applied to ensure that previous information on a certain subject is acknowledged. The writer, in this case, is able to indicate that indeed he or she has researched related literature concerning the topic at hand and provides information on what has been achieved in the topic of concern. Consequently, once the previous literature has been acknowledged, the writer is able to table his or her position based on the previous information thereby providing a basis for the argument or claim they intend to make. Thirdly, referencing is done to ensure that ...

Uranium (U) element was discovered by a German chemist, Heinrich Klaproth, in 1789. Uranium is a radioactive element with an atomic weight of 238.02891 and an atomic number of 92. The uranium element initially discovered by Heinrich was an oxide, uranium oxide. A French chemist, Eugène-Melchoir Péligot, was the first person to produce pure uranium by reacting it with potassium in a heated platinum crucible. The element’s radioactive properties were established in 1896 by a French physicist known as Antoine Henri Becquerel. Currently, uranium can be extracted from various ores such as carnotite (K2(UO2)2VO4· ...

in the industrial and infrastructure sector

Abstract

In most parts of the Arab countries, the limited resources of water pose adverse constraints to both the social and economic development, while also threatening the people’s livelihood. The available surface water keeps on declining, and the ground water over-pumping that goes beyond the natural recharge rates has continued to cause great negative impact in the lowering of water table. Over-pumping of ground water also increases ground water salinity, ground water depletion, and ecological degradation (SCENR 5). The outcome prompted the Qatar government to start regulating its water resources as a measure ...

Seawater Pretreatment Process

Desalination or treatment of seawater is a process in which fresh water that is suitable for consumption is extracted from the saline water (Pearce, 2007). Many methods are used in the desalination process, but the most applied and efficient one are reverse osmosis. The sea water that is fed to the reverse osmosis plants, many times has large particles which end up spoiling the membranes of the plants due to the high level of large particles in the seawater (Van Hoof, Hashim, & Kordes,1999). Therefore, to reduce operation cost and treatment time, there is a need for a pretreatment ...