natural gas, coal, oil and nuclear energy which are generated from ancient animal or plant remains or fossils and they are exhaustive. The major advantage of non-renewable energy sources is that they are readily available, easy to use and also economical to transform one non-renewable energy type to another. On the other hand, the most important disadvantage of non-renewable energy sources is that they are limited and will
reinforcing fibers (glass, carbon, kevlar). Advantages of natural fibers over traditional ones are low cost, high toughness, low density, good specific strength properties, reduced tool wear (nonabrasive to processing equipment), enhanced energy recovery, CO2 neutral when burned, biodegradability. Because of their hollow and cellular nature, natural fibers perform as acoustic and thermal insulators and exhibit reduced bulk density [29,30]. Some of the disadvantages and limitations of natural fibers, when
a synthetic or semi-synthetic nature. The term plastic came from the Greek word plastikos, this word means “fit for molding.” Plastics have many different properties when observed as a total. This what make plastic has many uses such as, rubber, cellulose, asphalt, and shellac. Also, it can be manufacture items like, electronics, clothing aircraft, packaging, recreational items, automobiles, and medical supplies. This list might go and proceed and plentiful of what we consume would not be conceivable
While combustion of biomass is the most direct and technically easiest process, the overall efficiency of generating heat from biomass energy is low. Gasification has many advantages over combustion. It can use low-value feed-stocks and convert them not only into electricity, but also into transportation fuels. In the upcoming years, it will serve as a major technology for complementing the energy needs of the world [4]. Use
The use of membrane methods has many advantages that it can be considered as an appropriate replacement for wet and dry washing methods to eliminate the defects of these methods. When the raw material contains a large amount of water and free fatty acids, it can easily interfere with the process
Title: Biofuel, is it the future energy solution? 3. Is biofuel the answer? - Analysis of pros and cons Pros : 1- Availability of Biofuels Biofuels are theoretically unlimited. In terms of availability, biofuels have a big advantage as they are at the top of the list of alternatives. The transition is likely to be subtle but slow as more and more fossil fuel is replaced with biofuel. 2- Environmental Impact Biofuels are environmentally friendly if they’re carefully produced and distributed
1. Epidermis: The multilayered envelope of the epidermis varies in thickness, depending on the cell size and number of cell layers, which ranges from 0.8mm on palms and soles down to 0.06mm on the eyelids. It further consists of two layers: a) Stratum corneum: It is the outermost layer of the skin and also termed as horny layer. It is approx 10mm thick when in dry conditions but swells to several times the thickness when fully hydrated. It is flexible but relatively impermeable and known as the principal
Industrial Engineering, Faculty of Industrial Technology, Institute Technology of Medan, North Sumatra, Indonesia e-mail: herlinalbs@yahoo.com ABSTRACT Organic waste treatment has been developed widely with electrochemical methods, because has advantages of low cost and efficient, the exhaust gas does not contain toxic materials and hazardous waste and the temperature of secondary treatment process is relative low. Electrochemical oxidation of organic compounds using metal ion mediator is one alternative