Physical chemical and biological properties of water. Biological Properties of Water PPT 2022-12-19
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Water is a chemical compound with the molecular formula H2O. It is a transparent, tasteless, and odorless liquid that is essential for all known forms of life. Water has a number of unique physical, chemical, and biological properties that make it essential for the functioning of living organisms.
One of the most important physical properties of water is its high specific heat capacity. This means that it requires a lot of energy to heat water up or cool it down. This property makes water an excellent thermal regulator, helping to maintain a stable temperature in living organisms and their environments.
Another physical property of water is its high surface tension. This is due to the strong cohesive forces between water molecules, which allows it to form a thin, stable film on surfaces. This property is important for many biological processes, such as the movement of water and nutrients through plant cells and the maintenance of the shape of cells and tissues in animals.
Chemically, water is a polar molecule, meaning that it has a positive charge at one end and a negative charge at the other. This allows water to dissolve a wide range of substances, making it a universal solvent. Water's ability to dissolve substances is important for many biological processes, including the transport of nutrients and waste products in living organisms.
Water also has a number of important biological properties. It is the medium in which all known forms of life exist and the basis for many chemical reactions that are essential for the functioning of living organisms. Water is also an important component of many enzymes, which are proteins that catalyze chemical reactions in cells.
In conclusion, water has a number of unique physical, chemical, and biological properties that make it essential for the functioning of living organisms. Its high specific heat capacity and surface tension, as well as its ability to dissolve substances and serve as a medium for chemical reactions, are all important for the maintenance of life on Earth.
Physical, chemical and biological properties of water
Water has a high surface tension. Most of the parameters result showed the water to be of good quality and will support and promote the survival of fish in the reservoir. The salinity of the ocean is about 35% but it can be as low as 25%. The standard unit of colour is that which is produced by one milligram of platinum cobalt dissolved in one litre of distilled water. Ministry of forestry and environment of Ethiopia should put up policies that should stop the various human activities which have been identified as a major threat to the sustainability of aquatic life for all reservoirs in the country. The residue is weighed and the loss of weight represents the organic content and is expressed as percent by weight. Solvent properties of water, High heat capacity of water, High heat of vaporization, High heat of fusion, Density and freezing properties, High cohesion, adhesion and surface tension of water, Water acts as a reactant, Phases of Water, Freezing, Melting, Vaporization, Condensation, Sublimation, Deposition, High cohesion, adhesion and surface tension of water, Density and freezing properties, solvent of life, Hydrophilic and Hydrophobic Interactions in Water Lecture Notes on Properties of Water Please be patient for few seconds to load the PPT preview.
During decomposition it tends to become acidic and stabilized solid waste has an alkaline pH. Taste and Odour The extent of taste or odour present in a particular sample of water is measured by a term called odour intensity, which is related with the threshold odour or threshold odour number. PHYSICAL PROPERTIES:Water has several other unique physical properties. The surrounding pressures are the greatest determinant of the boiling point of a liquid. Biological significance of low density of ice over liquid water: Ø In the water bodies of low temperature areas polar region the top region freezes first and the bottom last. An increase in salinity takes place with the increase in distance from the shore.
Wastewater characteristics: biological, physical, chemical
It has a surface circulation that is semiannually reversing. Reddy Range of Biological organisms Present in Water Metabolism of Bioorganisms Bio-Fouling Separation Thermodynamics Asghar Husain Relevant Thermodynamic Functions Partial Molar Properties Equilibrium Criteria Aqueous Solutions of Electrolytes Equilibria Relevant to Desalination Thermodynamic Properties Introduction to Thermodynamics Asghar Husain Terminology Variables and Properties First Law of Thermodynamics Equations of State Second Law of Thermodynamics The Equilibrium State Chemical Reaction Equilibrium Separation Phenomena in Desalination Asghar Husain Solar Stills Freeze and Hydrate Separation Ion Exchange Distillation-Based Desalination Processes Asghar Husain Multiple Effect Boiling MEB Plants Multistage Flash MSF Plants Vapor Compression Membrane-Based Desalination Processes Asghar Husain Reverse Osmosis RO Theory Electrodialysis ED Theory Some Practical Aspects of Desalination Processes Asghar Husain MEB Plants MSF Plants RO Plants ED Plants Limitations of the Membrane Processes An Overview of Fouling T. Washing of cow dungs and bathing and washing with phosphate based detergents and soaps into the reservoir might have also caused the high concentration of the ions. The number of times the sample is diluted represents the threshold odour number. We must ingest or drink water in order to maintain good health. PH It is the symbol for the logarithm of the reciprocal of hydrogen ion concentration in gram atoms per liter, used to express the acidity or alkalinity of a solution on a scale of 0 to 1, where less than 7 represents acidity, 7 neutrality, and more than 7 alkalinities.
About 99% of sea salts are formed by these ions. Such a hardness is known as temporary hardness or carbonate hardness. The results obtained were in169. Water is a universal solvent. The inlet site was relatively low in zooplankton density. This volume is aimed at the following five major target audiences: University and College Students Educators, Professional Practitioners, Research Personnel and Policy and Decision Makers Abu Dhabi acid Adel Al Radif Adil Adobe Reader Ali El Nashar Alradif Asghar Husain Asghar Husain,Adil bacteria biofilm biofouling boiling Borsani and Bushara brine brine heater CaCO3 calcium carbonate calcium sulfate CaSO4 cell chemical potential concentration condenser constant corrosion crystal growth crystallization fouling deposition Desalination Desalination and Water Desalination Processes dissolved distillate effect El-Nashar and Klaus electrode energy enthalpy equation equilibrium feed flash flow fluid fouling rate fouling resistance fugacity Hasson heat exchanger heat transfer coefficient heat transfer surface Husain,Adil Al Radif increase ionic ions ISBN kinetics Klaus Wagnick Koutsoukos layer liquid membrane moles MSF plant Müller-Steinhagen Nancollas Nashar nucleation operating particulate particulate fouling performance ratio phase phosphate precipitation pressure reaction reverse osmosis Roberto Borsani salinity salt Saturation scale formation seawater Sheikholeslami shown in Figure silica solubility stage steam temperature difference thermal thermodynamic tubes vapor velocity Название PHYSICAL, CHEMICAL AND BIOLOGICAL ASPECTS OF WATER -Volume I Desalination and Water Resources Encyclopedia of life support systems Том 7 Авторы D. The small size of water molecules B.
Physical, chemical and biological properties of solid waste.
Bacteria From a water quality perspective, we are mostly concerned about the role bacteria play in diseases. The mean value of the total alkalinity 83. High cohesion, adhesion and surface tension of water 7. The gas produced in the presumptive test does not confirm the presence of bacteria in the coliform group because there may be other bacteria present which also ferments lactose. Chemical examination of water  The chemical examination of water involves the tests which are undertaken to determine the chemical impurities and the corresponding chemical characteristics of water.
PHYSICAL, CHEMICAL AND BIOLOGICAL ASPECTS OF WATER
Ø Freezing cause crystal formation in the cells. Ø Formation of cell membrane and the three dimensional structures of protein and enzymes are due to the hydrophilic and hydrophobic interactions of different class of molecules with water. Each of the characteristics varies with the oceans of the world. If no gas is seen, it indicates the absence of the E-coli group, and the result of text is treated as -ve. Ø Important polar molecules of biological interest are ions, salts, sugars, some amino acids and nucleic acids. In fact, so many substances dissolve in water that it is sometimes mistakenly referred to as the "Universal Solvent. Physical, chemical, and biological characteristics of Oceans Ocean water consists of different ions such as chloride, sodium, sulphate, phosphate, and so on.
Encyclopedia of Desalination and Water Resources: Physical, Chemical and Biological Properties of Water
Bacterial and Microscopic Characteristics of Water Five types of parasitic organisms i. It dissolves many ionic compounds. Ø The least possible surface areas in a liquid are obtained when it is in a spherical shape. This oxygen demand is known as Biological oxygen demand BOD. THE USES OF WATER:OUR WORLD IS A PLANET THAT IS DOMINATED BY WATER AND THROUGH THEYEARS THE DEVELOPMENT IN THE STUDY OF WATER HAS BEEN IMPROVEDAND PRACTICALLY TESTED. We will also discuss the importance or significance of these properties of water in the biological system.
A combination of chemical as well as physical properties forms the characteristics of ocean water. Ø Water has high cohesive forces. This ocean is home to different species of the earth. Theattraction to one another is what causes water to form droplets. Therefore, there should be continuous monitoring of reservoir impacts on fish biodiversity and fish production as reservoir ecosystem changes with time. Thus the reservoir in good state that it may support good fish production.
