Contents:1. What is e-waste?2. Electronic waste’s substances.3. Issues and problems.4. Hazardous substances.5. Health conditions.6. Recycling and uses.7. Recycling techniques.8. What you can do?9. Uses by recycling old goods.
What is e-waste ? E-Waste is a shortening of electronic waste. Electronic waste, e-waste, e-scrap, or as Waste Electrical and Electronic Equipment (WEEE) describes discarded electrical or electronic devices,(which are of no use other then hitting your enemy) Any improperly disposed electronics can be classified as e-waste.
Issues and problems: Rapid changes in technology, changes in media, falling prices, and developing new electronics and discarding old ones, is a huge issue arising. Technical solutions are available, but in most cases a legal framework, logistics, and other services need to be implemented before a technical solution can be applied.
Electronic waste substances: Substances found in large quantities include epoxy resins, fibreglass, PCBs, polyvinyl chlorides ,thermosetting plastics, lead, tin, copper ,silicon ,beryllium, carbon, iron and aluminium. Elements found in small amounts include cadmium, mercury, and thallium. Elements found in trace amounts include americium, antimony, arsenic, barium, bismuth, boron, coba lt, europium, gallium, germanium ,gold, indium, lithium, manganese, nickel, niobium, palladium, plati num, rhodium, ruthenium, selenium, silver, tantalum, terbium, thor ium, titanium, vanadium, and yttrium
Hazardous substances: Americium: the radioactive source in smoke alarms. It is known to be carcinogenic. Mercury: found in fluorescent tubes (numerous applications), tilt switches (mechanical doorbells, thermostats),and flat screen monitors. Health effects include sensory impairment, dermatitis, memory loss, and muscle weakness. Environmental effects in animals include death, reduced fertility, slower growth and development. Sulphur: found in lead-acid batteries. Health effects include liver damage, kidney damage, heart damage, eye and throat irritation. When released in to the environment, it can create sulphuric acid.
And still Cadmium: The most common form of cadmium is found in Nickel-cadmium rechargeable batteries. The inhalation of cadmium can cause severe damage to the lungs and is also known to cause kidney damage.Lead and beryllium oxide: these are used as solder and thermal grease respectively and are both harmful and cause severe lung infections.
Health conditions: Many of the primitive recycling operations in Guiyu are toxic and dangerous to workers health. 88% of workers suffer from neurological, respiratory or digestive abnormalities or skin diseases. Higher than average rates of miscarriage are also reported in the region. Workers also "cook" circuit boards to remove chips and solders, burn wires and other plastics to liberate metals such as copper; use highly corrosive and dangerous acid baths along the riverbanks to extract gold from the microchips; and sweep printer toner out of cartridges
Toxic Substances Present in E-waste There are many harmful materials used in consumer electronics including lead, cadmium, mercury and plastics.
Recycling techniques: In developed countries, electronic waste processing usually first involves dismantling the equipment into various parts (metal frames, power supplies, circuit boards, plastics), often by hand, but increasingly by automated shredding equipment. The advantages of this process are the humans ability to recognize and save working and repairable parts, including chips, transistors, RAM, etc. The disadvantage is that the labour is cheapest in countries with the lowest health and safety standards.
Nations that have signed and ratified, along with nations that have signed but have not ratified the agreement.
Electronic waste in china: Guiyu, China, in Guangdong. Province is made up of four small villages. It is the location of the largest electronic waste (e-waste) site on earth, China is believed to be the predominant recipient of the worlds electronic waste, with a roughly estimated one million tons being shipped there per year, mostly from the United States, Canada, Japan, and South Korea. The waste arrives via container ships through the ports of Hong Kong or Pearl River Delta at Nanhai.
What can you do? In order to lessen the amount of e-waste being produced, individuals can do many things: 1. Keep your old electronics longer instead of replacing them. 2. If discarding old electronics, be sure to recycle them at a trusted recycling center. 3. Purchase efficient electronics that do not contain hazardous materials such as mercury and lead.
Uses by recycling of e-waste materials LED’S from old LED panels. Computer chips using old used gold metal. Creating new solar cells using old silicon wafers. Recycling silicon chip for making lithium ion batteries. Rolling up of nanowire batteries using from old silicon chips
The Issue Due to the breakneck speed of the modern world at developing new electronics and discarding old ones, a huge problem is brewing. The recycling procedures used in disposal centers in rural china lead to toxic materials like lead to seep into the surrounding environment. This practice occurs all over places like India, Pakistan, Singapore, and specifically, China. The example being studied is the small village of Guiyu, China, which has become a centerpiece in this issue.