The Cons of Bioplastics
- Growing demand for bioplastics creates competition for food sources, contributing to the global food crisis.
- Bioplastics won't biodegrade in a landfill.
- Bioplastics encourage people to litter more.
- Bioplastics contaminate plastic recycling streams.
- Bioplastics are not the answer to marine litter.
Bioplastics do produce significantly fewer greenhouse gas emissions than traditional plastics over their lifetime. There is no net increase in carbon dioxide when they break down because the plants that bioplastics are made from absorbed that same amount of carbon dioxide as they grew.
Biodegradable plastics are plastics that can be decomposed by the action of living organisms, usually microbes, into water, carbon dioxide, and biomass. Biodegradable plastics are commonly produced with renewable raw materials, micro-organisms, petrochemicals, or combinations of all three.
Fact: Bioplastics can be biobased and/or compostable. Other bioplastics are completely biodegradable/compostable, but are made with fossil materials. Whether a material can biodegrade or be accepted at a compost facility does not depend on its origin (renewable or fossil).
Most plastics are non-biodegradable mainly because plastic is widely used because of its low cost, versatility and durability. This durability is partially based on plastic being an uncommon target for bacteria, which makes it non-biodegradable.
Bioplastics could potentially be worse for the environment than conventional plastics, according to recycling expert Arthur Huang. Switching to plastic made from plants instead of fossil fuels would require vast amounts of farmland, Huang said. This could cause environmental problems and deprive humans of food.
Bioplastics made from natural materials such as corn starch. Biodegradable plastics made from traditional petrochemicals, which are engineered to break down more quickly. Eco/recycled plastics, which are simply plastics made from recycled plastic materials rather than raw petrochemicals.
Here are some benefits of biodegradable products: Biodegradable products break down much faster than other types of products. These types of products break down into carbon dioxide, water vapor, and organic material, which isn't harmful to the environment.
Because it can be derived from plant material like corn sugar, potato or sugarcane, it can reduce the demand for fossil fuels used to make conventional plastics. PLA is recyclable, biodegradable and compostable. But that doesn't mean the ocean — or any other natural environment — can easily handle it.
Price of bagsCycleWood's bags are expected to cost roughly 1.5 cents per unit compared with 1.2 cents for traditional plastic bags, which could become more expensive amid rising oil prices. Other biodegradable bags — made from corn or potatoes — can cost as much as 10 times that amount, cycleWood's founders say.
Made with up to 30% ethanol sourced from plant material, the PlantBottle won't decompose, but it can be recycled with traditional PET containers and bottles. It is important to note that this is an outstanding example, as not all bioplastics are recyclable. Plus, these are not recyclable.
Biodegradable Plastics are Easy to RecycleThey are also non-toxic since they have no chemicals or toxins. Recycling helps to lessen landfill problems, and besides, the recycled bio-waste can be used as compost or as renewable energy for biogas.
Essentially, bioplastics are bio-based, biodegradable, or both. The term 'bio-based' means that the material or product is at least partly derived from biomass (plants). Examples of biomass used in bioplastics include corn, sugarcane, tapioca, or other forms of cellulose.
A winning quality of compostable plastics is that they are produced from renewable resources, and if correctly disposed of in a food waste bin, and sent to an "In Vessel Composting Facility" along with food waste, can be reprocessed into compost.
Items that cannot be recycled:
- Plastic bags or recyclables inside plastic bags.
- Takeaway coffee cups.
- Disposable nappies.
- Garden waste.
- Polystyrene (foam)
- Bubble wrap.
- Syringes or medical waste.
- Dead animals.
Bioplastics can't be recycled, and if their production rises, it will be necessary to reconsider the way we treat plastic waste. If the bioplastic is thrown in a bin with traditional plastic, it can cause problems. PET is one of the most used plastics, and the result of recycling process are PET flakes.
Plastics are derived from materials found in nature, such as natural gas, oil, coal, minerals and plants. The first synthetic plastics were derived from cellulose, a substance found in plants and trees. Cellulose was heated with chemicals and resulted in a new material that was extremely durable.
A bioplastic is a type of
plastic that can be made from plant starches or gelatins/agars.
The following amounts of each ingredient are needed to make the bioplastic:
- 10ml distilled water.
- 0.5-1.5g glycerol.
- 1.5g cornstarch.
- 1ml of white vinegar.
- 1-2 drops food coloring.
- Adult supervision is recommended.
Penetrating water-repellent chemicals such as reactive silanes and siloxane resins are used to make it waterproof. The bioplastics are not hazardous/toxic in production and decompose back into carbon dioxide, water, biomass etc.
