Innovative Efforts in the Design of Equipment Using Chemical Reactions As Source of Energy

5.8 Innovative Efforts in the Design of Equipment Using Chemical Reactions As Source of EnergyQua Wen Wei & Brenda Tan4 Faraday

Proper Way of Disposing of Electric CellsReduce Do you really need that new cell phone, stereo, computer or TV? Although electronics are made to last years, many feel the need to buy new products as soon as they are available. And it seems as though companies are cranking out the next model before you even have a chance to snip your proof-of-purchase for that rebate. Preventing waste by reducing electronic consumption is preferable to any waste management option.

Reuse While you are trying to find a purpose for your unused electronics, the boxes theyre in are collecting dust in the garage. Meanwhile, their useful life is wasting away until the time comes when you decide they need to be thrown away. Just because you have the newest iPod or TV doesnt mean someone else wont appreciate the perfectly good older model. Donating used electronics to schools, non-profit organizations, and low-income families is a great way to lengthen the life of electronic products and keep them out of the waste stream longer.

Recycle If a product is no longer in condition to be used, dont just throw it away! There are precious parts and ingredients in electronic devices that can be recycled. The metal, plastics, batteries and packaging materials in products like cell phones can be used for new products. Metals like gold, silver, platinum, palladium, rhodium, copper, tin, lead, brass and zinc can be recovered and used for jewellery, plating, electronics, plumbing, automotive and art foundries.

Proper Way To Dispose Electric Cells Video

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Battery Recycling at MRI Waste Facility

Using energy efficiently to preventwastage1a) Many power stations burn fuels such as coal to produce heat for boiling waterb) The steam produced is used to turn the turbines connected to the dynamo . As a result , electricity is generated.c) The energy change is as follows:

Chemical energy ( in the fuel)Kinetic energy(The turning of turbines and dynamo)Electrical energy

2. Most vehicles used in our modern society burn fuels such as petrol and diesel to produce energy to drive the engines.3. The fuels used in power stations and vehicles are non-renewable.4. Thus, we should use energy efficiently to prevent wastage

Ways to use energy efficientlyUSE ENERGY EFFICIENTLY Use energy-saving electrical appliancesTurn off all electrical appliances when they are not in use Iron the clothes all at one timeCar-poolClose the door of a refrigerator immediately after taking things from it

New ways to using chemical reactions as sources of energy Fuel cells are new type of electric cell which are better than traditional cells and have many advantages. A hydrogen fuel cell uses hydrogen as fuel to react with oxygen to produce energy. The product is water, which will not pollute the environment.

A metal fuel cell oxidises metal atoms (such as aluminium) to produce energy. Fuel cells will continue to produce electricity as long as the fuel is supplied. Metal fuel cells can be refuelled in 10 seconds.

Structured QuestionsSample Questions(a)Why shouldnt electric cells be disposed in dustbins?

Answer: Electric cells contain harmful corrosive chemicals.

(b) Suggest one way to dispose of electric cells.

Answer: Electric cells should be disposed of separately from other household items. Parts of batteries can be recycled.

c) State one advantage of using a hydrogen fuel cell.

Answer: The by-product for this cell is water which will not pollute the environment.