Erasmus - 6 april 2022

• Aardrijkskunde
• Middelbare school
• vwo
• Leerjaar 4

ERASMUS

meeting april 6th  2022 

15:15 - 16:15 

Schedule

1: Introduction of the meeting

2:  Start with the assignments - 4 in total

3: Discuss the answers

4: Beat the Microbead 

5: Closing the meeting

assignment 1 

On the next slides you will find examples of different products. After use, it is waste. List the products in order of how long it takes before they are broken down in nature. For example, how long does it take for a banana peel to break down?

Product

1.

2.

3.

4.

5.

6.

7.

8.

9. 

How long does it take to break down?

apple

news

paper

Banana peel 

milk carton

chewing gum

bag of chips 

soda can

plastic bottle

plastic bag 

2 - 3 weeks 

2 - 8 weeks

2 years 

5 years 

25 years 

50 - 75 years 

approximately 50 years

approximately 500 years

approximately 500 - 1000 years 

Assignment 2 

There are three different categories of waste:

1. Degradable Organic Waste

2. Barely degradable organic waste

3. Inorganic Waste

A = Find out the difference of these three categories.

B = Divide the products from assignment 1 into these three categories.

Assignment 3 

Where is the waste found? The environmental conditions are of great importance in the decomposition of the waste. There are big differences in cut-off time. 

Which chemical / biological processes play the largest role in the breakdown of the three categories of waste?

                                                                         How is it broken down?              1. Degradable Organic Waste                                  ?

2. Barely degradable organic waste                     ?

3. Inorganic Waste                                                           ?

1. Degradable Organic Waste - How is it broken down?

2. Bearely degradable organic waste - How is it broken down?

3.Inorganic Waste - How is it broken down?

Assignment 4 

A can of soda cannot perish on a hard surface, but it can on a bottom where, for example, water is present.

Make the right combinations -> which product decays fastest under which circumstance?

Choose from: coniferous forest – desert – sea – tropical rainforest – glacier

Where does a banana peel decay the fastest?

1. coniferous forest
2. desert
3. tropical rainforest
4. glacier

Where does a bag of chips decay the fastest?

1. sea
2. desert
3. coniferous forest
4. glacier

Where does a bag plastic bottle decay the fastest?

1. coniferous forest
2. desert
3. rainforest
4. glacier

Beat the Microbead

Please download the app called: Beat the Microbead on your phone or iPad. 

Find a product to scan and find out if it contains microplastics. Think of products that you use in the bathroom like shampoo, bodylotion, make-up, sunscreen... 

vegan shampoo 

PPG-9 

What Is PPG-9?

Propylene glycol, also known as 1,2-propanediol, is a synthetic alcohol that attracts/absorbs water. It is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste. Propylene glycol is one of the most widely used ingredients in cosmetics and personal care products, including facial cleansers, moisturizers, bath soaps, shampoos and conditioners, deodorants, shaving preparations, and fragrances. In addition to its use as an ingredient in cosmetic and personal care products, it is used in numerous food items such as beer, packaged baked goods, frozen dairy products, margarine, coffee, nuts, and soda. It is also used as an inactive ingredient in many drugs. FDA has approved its use at concentrations as high as 98% in drugs applied to the skin and 92% in drugs taken orally. 

PPG-9

European Union (EU)

Propylene glycol is listed on the EU’s Inventory of Cosmetic Ingredients (CosIng) and its use as a cosmetic ingredient is not restricted in any way according to the general provisions of the Cosmetics Regulation of the European Union.

The Joint FAO/WHO Expert Committee on Food Additives (JECFA) recommends a maximum daily oral intake of 25 mg Propylene Glycol/kg body weight/day.

Thank you for your time!

We hope to see you soon :-)