Ghenar, Mikail, Nura, Raiden, Sofia, Vian
How The World Works
An inquiry into the natural world and its laws; the interaction between the natural world (physical and biological) and human societies; how human use their understanding of scientific principles; and the impact of scientific and technological advances on society and on the environment.
Plastic waste and its effect to the climate change.
Lines of Inquiry
- How plastic waste affect climate change (causation)
- Plastic waste management in Indonesia
- Plastic waste as an alternative energy
- People responsibilities to reduce plastic waste in the environment
- Identify the effect of plastic waste to climate change
- Describe the plastic waste management in Indonesia
- Analyze how plastic waste can be an alternative energy
- Evaluate the importance of 3R that impact on human life
What do we learn?
Parents & Mentors' Meeting
Literature Research & Discussion
Interviewing Bapak Novrizal Tahar (Direktur Ditjen PSLB3 KLHK RI)
Interviewing Kak Khairunnisa (waste4change)
Guest Speaker Reflection
Experiment 1: Biodegradable plastic from corn starch
We do research on how to make biodegradable plastic. We found a previous study that creates biodegradable plastic from corn starch. Therefore, we try to create our own experiment with several changes and adjustments in the materials.
The purpose of this experiment is to know if we can make plastic by using renewable materials, not from the fossil fuel. In this experiment, we use corn starch, cooking oil, food coloring, and water. The equipments needed are spoon, bowl, and microwave. These are the steps to make biodegradable plastic: first, pour corn starch to the bowl, add cooking oils and water. Then, we stir it until it dissolves. Next, we add a few drops of food coloring. After that, we heat the mixture in the microwave for about 15 minutes with the high temperature. The last, the corn starch has become a plastic.
After we conduct the experiment, we conclude that we can use other materials to make plastic, so we can minimize the use of fossil fuel and save the non-renewable energy. Moreover, if we use corn starch for example, the plastic is also easier to degrade in the environment. However, this plastic has limitations such as, not really strong and not easy to be shaped. Therefore, we need chemical materials to make the plastic gets stronger and we also need machine to shape the plastic into plastic bags.
Experiment 2: Bioplastic from tapioca starch
The purpose of this experiment is to create plastic by using tapioca starch. From the previous experiment, we learn that we need chemical materials to make the plastic easier to be shaped and it can be more stronger. Therefore, in this experiment we adjust the materials. The materials we need are tapioca starch, vinegar, glycerin, and water. The procedure of this experiment as follows: first, we pour the tapioca starch into a bowl, then we add vinegar, glycerin and water. Next, we stir the mixture. After that we cook the mixture with small fire until it gets thick. Then, we pour the mixture into a bake sheet, and dry it under the sun for two days. After 4 days, the plastic from tapioca starch has done.
Experiment 3: Plastic to fuel
The purpose of this experiment is to transform plastic into energy, especially liquid fuel. We know this experiment from articles and journal we read. Before we conduct the experiment, we asked Ms. Beta to teach us about this experiment because she is major in chemistry education. We discuss and do the scientific method of this experiment. This experiment use pyrolysis technique by using distillation apparatus with heating mantle. Pyrolysis is a technique to convert biomass to an intermediate liquid product that can be refined to drop-in hydrocarbon biofuels, oxygenated fuel additives, and petrochemical replacement (solid to gas to liquid).