Any unwanted or discarded material that are detrimental for environmental can be termed as solid waste. Solid waste management covers the control of solid waste generation, collection, storage, transport, processing, separation, recycling, recovery and purposeful disposal of solid waste. Usually, solid wastes management is handled by a municipal, city or town authorities. Major considerations of […]
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Our earth’s ecosystem has four components. The atmosphere is one of them. The other three components are the biosphere, hydrosphere, and lithosphere. The atmosphere is the gaseous band that surrounds our earth’s surface. It’s the gravity of the earth that protects the atmosphere from being disappeared into outer space. Availability of gases in the atmosphere
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What is Pollutant? If the concentration of a substance already present in nature is increased to unrequired ratio due to human activity, which ultimately has a detrimental effect on the environment either by reducing the quality of life or affecting the health then it is known as a pollutant. Example: sulphur dioxide, carbon monoxide, lead,
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The term environment comes from the French word environ which means everything that surrounds us. The sum total of all surroundings of a living organism, including natural forces and other living things, which provide conditions for development and growth as well as of danger and damage. What are the segments of our environment? atmosphere hydrosphere
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What is Marine Chemistry? Marine Chemistry is the branch of chemistry where marine environments and different variables of marine ecosystem is studied. What are the major marine resources? • Fisheries • Oil • Gas • Minerals • Sand & Gravels • Renewable Energy What are the major supporting and regulating marine services? • Waste disposal, absorption and
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Lithium ion battery (LIB) is a rechargeable battery Consist of anode, cathode, electrolyte and a separator Available for purchase from 1991 Sony rechargeable battery past and present Charging and discharging of Li-ion battery Application of lithium-ion batteries Present day’s LIB: 18650, 26700 and 26650 size Application: Electric vehicle, smartphone, laptop, toys, e-cigarettes and vaporizers, medical devices, portable
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What is Water Pollution? Water pollution is defined as alteration in Physical, Chemical and biological characteristics of water which may cause harmful effects on humans and aquatic biota. Properties Of Water • It is an excellent solvent which assists in transportation of nutrients and waste products, making biological processes possible in an aqueous medium. •
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Wastewater is characterized by their physical, chemical and biological characteristics. Physical Characteristics: Color, Odor, Dissolved oxygen (D.O), Insoluble substances (suspended solids, settleable solids), Corrosive properties, Radioactivity, Temperature, Foamability etc. Chemical characteristics: Chemical oxygen demand (C.O.D), pH, Acidity or Alkalinity, Hardness, Total carbon, Total dissolved solids, chlorine demand, trace elements & ions, Surfactants, phenols, hydrocarbons, oils
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