Recycling Batteries
Storyboard Szöveg
- Social Impact of Batteries
- Do you think that one day cities could be powered by large batteries?
- As I mentioned, here are the two mentioned items which have been innovated through batteries.
- Yes Cory. I do see a future where your house would be powered by a battery. Especially now that we're using renewable energy.
- Discussion on Types of Batteries
- Lithium Ion Batteries and Lead Acid Batteries!
- Lead Acid Batteries are used in cars
- What are the two types of batteries?
- Batteries have become increasingly common in powering everyday machines like phones and cars
- Recycling of Lead and Plastic
- All LABatteries have an outer protective plastic casing. When they get recycled, the plastic casings are recycled to make new plastic products such as one's on the board
- Mr. Wallow's begins his lesson on batteries. He begins the discussion by providing various different innovations batteries have provided. Batteries have allowed for the powering of portable devices and zero carbon emission vehicles such as cars. Mr. Wallow makes a prediction that sometime in the future, battery technology would've improved to the extent that major metropolitan cities are powered by them.
- Recycling of Sulfuric Acid
- The question that can be asked is how do we recycle a liquid? Well, since sulfuric acid is an acid, we can neutralize it to form sodium sulfate crystals through sodium carbonate. Sodium sulfate is used to make detergent, produce glass and fabrics.
- Mr. Wallow's transitions to teach the student's about two main types of batteries commonly used. He teaches them about Lithium Ion Batteries. These batteries are known to have a high energy density to weight ratio and a low self discharge rate allowing them to power devices for longer. Despite wanting to continue talking about Lithium Ion Batteries, he had to educate student's on Lead Acid Batteries. LA batteries are made of a cathode made of lead oxide, an anode made of metallic lead and sulfuric acid (H2SO4(aq)) to work as the electrolyte. He asks Andrew to teach about the recycling of lead and plastics.
- Health Issues with Recycling
- -Abdominal Pain- Constipation- Tiredness- Headaches- Irritability- Loss of Appetite- Loss of Memory- Pain sensation in Hand or feetLong term effect include brain damage, amnesia or death
- Alright Class. Now it's important to learn about the health issues of recycling lead. I've written some of the health effects that come through the inhalation of lead fumes.
- Andrew begins with the recycling of lead. Typically the lead is extracted from old lead acid batteries (LA batteries) to be melted down and used again in new batteries. Once the melting process is over and the old lead has been transformed into ingots, they use the ingots to make new lead oxide for the cathode of the battery and new metallic lead grids for the anode of the battery. Likewise, the plastic is broken down into pellets which are used to make new plastic products such as new battery casings or completely different products such as plastic bags and containers.
- Environmental Issues with Recycling
- lead particles can end up in rivers. Since sulfuric acid is aqueous, its droplets are incredibly soluble in water which can be bad for marine life.
- Mr. Wallows is happy with Andrew's teaching on the recycling of Lead and Plastic. He wanted Cory to present the recycling of Sulfuric Acid before returning to talk about the Health effects. Cory discusses that there are 2 main ways. Both require the acid to be neutralized. The chemical equation is H2SO4(aq)+Na2CO3(aq) --> H20(l) + CO2(g) + Na2SO4(aq).The reaction between sulfuric acid and sodium carbonate yeilds water, carbon dioxide and sodium sulfate. Sodium sulfate is used to produce glass, detergent and textiles.
- Mr. Wallows once again is happy with Cory's teaching and returns to educate for the rest of his presentation. He notes that recycling lead in an inadequate environment can lead to many health problems through the inhalation of lead particles. He noted down the various health problems on the board, hinting that this would be on the student's exam in the future. Mr. Wallows also stated the harmful effects of sulfuric acid stating that the acid is corrosive, causing lots of damage to skin and tissue.
- Is there any detrimental effect from sulfuric acid?
- Mr. Wallows discusses the final bits of their lesson on batteries before wrapping up. He states the environmental effects of recycling batteries. Due to the inadequate environments and location (oftentimes close to population in urban areas), toxic lead fumes are released into the environment leading to the adverse health effects they talked about. As Mr. Wallow's referred to when Cory was teaching, when some plants decide to dispose the acid, it is important to them to follow proper guidelines, stating that the highly soluble sulfuric acid can cause chronic toxicity to aquatic life if unsafe practices are continued to be used. This sparked a motivation towards more ethical recycling of batteries.
- I think we should take action as a class to promote ethical recycling of batteries!
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