Silver is a depleted precious resource and in the near future it all be used up. In addition to this, our country is not produced the metal at this moment. Extracting silver from enough silver containing wastes like used X-ray photographic film will considerably save the foreign currency to import this metal. The waste X-ray photographic films containing 1.5-2% (w/w) black metallic silver would be used for recovery and reuse. Around 18-20% of the world's silver needs are supplied by recycling photographic waste. Extraction of silver from the ore is expensive and harmful to the environment....

Optimum Design and Analysis of a Composite Drive Shaft for an Automobile: Substituting composite structures for conventional metallic structures has many advantages because of higher specific stiffness and strength of composite materials. This work deals with the replacement of conventional two-piece steel drive shafts with a single-piece e-glass/ epoxy, high strength carbon/epoxy and high modulus carbon/epoxy composite drive shaft for an automotive application. The design parameters were optimized with the objective of minimizing the weight of composite drive shaft. The design optimization...

The purpose of this work was to study the effect of chemical surface properties of activated carbons for their use in water purification. To achieve this objective, activated carbon in both granular and powdered forms namely: as received and devolatilized carbons were prepared. Proximate analysis of the carbon materials was performed. Mass titration experiments were carried out to determine the point of zero charge of the activated carbon materials. Again, using an ultraviolet spectrophotometer, the adsorption of phenol on as-received and devolatilized activated carbon was investigated....

Diesel engines play a substantial part in almost all energy-related areas, especially in the transportation and power generation sectors. They are one of the most efficient prime movers with high thermal efficiency and durability. Despite these advantages, they have a serious downside, which is the higher exhaust emission.Because of the lavish consumption and continuous usage, the fossil reserves are getting depleted rapidly. These issues and the ever-increasing price of crude oil have forced the world nations to look for alternate energy resources. Even though a lot of alternative fuel shave...

The environmental justice movements' deconstructions of traditional environmentalism's approach to ecological justice have led to discussions about whether traditional philosophical theories can be the best way to bring philosophy to environmental questions. Environmental justice movements have been critical of the traditional environmentalism's narrow understanding of ecological justice merely in terms of equity and calls for much more than just distribution. Simultaneously due to the increasing threats of global warming and environmental degradation, development scientists and political...