natural waters, such as lakes and streams. Phosphates are essential to aquatic plant growth, but too much phosphate can lead to the growth of algae and results in an algae bloom. Too much algae can cause a decrease in the amount in dissolved oxygen in the water. Oxygen in water is affected in many different ways by phosphates Phosphorus is usually present in natural waters as phosphate(Mcwelsh and Raintree, 1998). Phosphates are present in fertilizers and laundry detergents and can enter the water
Science Experiment to Measure the Dissolved Oxygen Levels Using the HACH Method and CHEMets Test Kit Purpose The purpose of my project is to determine if there is any significant difference in dissolved oxygen (DO) levels as measured by the traditional HACH® method or the newly developed CHEMets® test kit under typical field conditions. Hypothesis My hypothesis is that there is no significant difference in dissolved oxygen (DO) levels as measured by the traditional HACH® method or
impacts include major flooding due to the gigantic reservoirs that are formed by dams, which in turn makes certain areas of useful land worthless (Baird). Another impact is that the flow and quality of the water may be affected in ways that the dissolved oxygen content of the water will decrease, but this problem can be minimized with proper flow control (US Dept. of Energy). On the other hand, hydroelectric plants do not release any emissions such as carbon dioxide or sulfur dioxide, both of which
is more than something that we drink when we are thirsty or use to bath ourselves when we wish to be clean. Water makes up 71% of the Earth’s surface, being made of just two hydrogen atoms and one oxygen atom. It is vital for life to be sustained on Earth, allowing plants to survive and provide oxygen for animals to breathe and function while suppling animals with the core necessity that they need to strive towards survival. When we think of water, the first thing that comes to the minds of many
each intertwined and connected. For simplicity there are several mainstream parameters that are used in conjunction with each other to determine the water s quality. These include: alkalinity, ammonia content, carbon dioxide, chlorine, nitrates, dissolved oxygen, phosphates, temperature, and turbidity. The most visible sign of poor water quality is reduced animal populations. Almost all animals will suffer if pollutants are in the water supply. There are several ways to lower pollution levels in water
Measuring the level of dissolved oxygen chemically and biologically (COD, BOD) - Measuring the amount of bacteria - Biological sample There are so many other ways to measure water quality. In this lab report, we are going to discuss BOD, biochemical oxygen demand. What is BOD ? BOD determines the quality of water by measuring the amount of dissolved oxygen in the samples. The oxygen in the water is usually from photosynthesis of aquatic plants and oxygen from the air that dissolved into the water. Bacteria
the lake’s pH and dissolved oxygen levels in areas of frequent boat and motor activity and create a disturbance in the lake’s biodiversity due to the toxins in the various types of fuels burned. Dissolved oxygen and pH levels influence the abundance of fish. In high enough amounts, metals may be toxic to fish, wildlife, and or microscopic animals. Local lake water will need to be tested in order ... ... middle of paper ... ...e effects on the lake’s pH and dissolved oxygen levels. The lake’s
such as reproduction to take place. Oxygen and carbon dioxide are the main gases involved in this process. Gas exchange is the diffusion of oxygen and carbon dioxide in and out of the cells. It is essential for respiration to occur. A carbon dioxide build up in the body is extremely dangerous so this must be removed from the body. Respiration is a process which is required for living things as it removes carbon dioxide from the body and replaces it with oxygen, this being a requirement for survival
BOD (biochemical oxygen demand) BOD is the traditional, most widely used test to establish concentration of organic matter in wastewater samples. BOD is based on the principle that if sufficient oxygen is available, aerobic biological decomposition (i.e., stabilization of organic waste) by microorganisms will continue until all waste is consumed. The BOD test is also known as "BOD5" since it is based on the accurate measure of DO (dissolved oxygen) at the beginning and end of a five-day period in
which, when such organisms die, they consume the oxygen in the body of water, thereby creating the state of hypoxia (deficiency in the amount of oxygen reaching the tissues) Mechanism of Eutrophication When algae die, they decompose and the nutrients contained in that organic matter are converted into inorganic form by microorganisms. This decomposition process consumes oxygen, which reduces the concentration of dissolved oxygen. The depleted oxygen levels in turn may lead to fish kills and a range
Environmental problems happen everywhere around the world. Something similar happened in the Gray Area. The Gray Area is a region that is surrounded by mountains and rivers. The Missterssipi river, the Rafta river, and the Fo river are the rivers that currently exist in the Gray Area. These three rivers flow down and congregate to the Gray Bay. There are many tourist attractions in the Gray Area like, the golf course. Recently, fish have been dying and have been washing on to the shores of the Gray
concentration of dissolved oxygen, the pH level in the water, the salinity of the water or salt content in the water, the temperature of the water and its turbidity or the ability to see through the waters surface, there are also other contaminants that may affect water quality. Dissolved oxygen (D.O) is an important variable in the water quality of fresh water ponds as it is vital for aquatic life such as fish to survive in the environment. D.O is the quantity of oxygen that has been dissolved into the
Introduction: In this lab we will be testing bodies of freshwater. We will be determining the quality of the water based on multiple factors including nitrates, phosphates, pH levels, and dissolved oxygen levels. All of these factors must be in appropriate ranges for the ecosystem to be healthy. Literature Review: There are many different elements and chemicals that can both positively and negatively affect freshwater ecosystems. Many different factors play into the survivability of a lake, pond
of the experiment. In the period between the next lab session, chemiluminescence and luminol were researched, with findings encouraging the use of distilled water as a solvent and hydrogen peroxide or bleach as a reagent, with the reagents also dissolved in the distilled water. In the second lab session, trials were carried out in test tubes rather than in well plates. In the first test tube, a small amount of luminol was mixed with a specified amount of solvent. In the second tube, a reagent or
autoclave oxidation of sulphur, selenium and arsenic has been studied in terms of investigating the dissolution behaviour in an alkaline system. Also the mathematical description of the interfacial mass transfer rate of the primary oxidant-diatomic oxygen (O2) molecule) from the gas to the liquid phase has been evaluated. The conclusions are summarized as follows: 9.1.1 Reaction Chemistry of sulphur In the alkaline pressure oxidation of PGM’s system, sulphur reacts with an excess of hydroxide resulting
Living thing need air to breath. Air unseen and untouchable. Air are consist of nitrogen, oxygen, carbon dioxide and other gaseous. Nitrogen is an important element for the living organisms to live and to form the complex organic molecules such as proteins and amino acids. However, most of the living organisms such as plants can only use the nitrogen which already in compound form because the pure nitrogen is inactive and the strong triple bond between its atoms are difficult to break. In order to
Currently, the United State’s Gulf of Mexico experiences an annual, seasonal “dead zone” as a result of hypoxia. Hypoxia is a low level of dissolved oxygen (<2mg/L) in an area of water. Hypoxia is typically temporary and seasonal, but the low oxygen levels can be devastating to aquatic organisms. Hypoxia occurs in many oceanic waters worldwide, but there is a growing area of concern in our Gulf of Mexico coast. Hypoxia is largely caused by nitrogen fertilizer application for agriculture, with heavy
4.4 Disinfection by ozone The atmospheric oxygen is in molecular form containing two atoms of oxygen. But when a high-tension electric current is passed through a stream of air in a closed chamber, triatomic molecules of oxygen are formed as shown by the following equation: O2 + O O3 Such oxygen is called ozone. The third atom is very loosely bound and the ozone easily breaks down into oxygen and releases nascent oxygen which is very powerful in killing bacteria. The ozone also
The natural rubber industry products have a large demand globally for their various uses in different applications. Rubber is used to manufacture products in every field, from automobile parts, medical devices, plumbing, electrical, stationary, etc. India is ranked third in the world producers of natural rubber [4]. In the Dakshina Kannada region of Karnataka agriculture is one of the main occupations of the locals. Rubber, Arecanut, Paddy, Coconut, etc., are commonly grown in this region of which
INTRODUCTION Hook What makes the water extremely polluted and full of sewage? Rivers, lakes, and even oceans all over the world are be-coming polluted with garbage and dangerous chemicals. Background information Polluted water is a hazard to everyone. It has been suggested that water pollution is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily. An estimated 580 people in India die of water pollution related illness every day