Sofia Martinez
Plastic is everywhere, and it's bad for the environment. But not all plastics are equal. Some are more environmentally friendly than others. The term plastic covers a wide range of materials, some of which are replaceable by more eco-friendly alternatives. Eco-friendly plastics are made from natural substances and are designed to be processed in either home or industrial composting facilities. However, the end-of-life handling of eco-friendly plastics is still in its infancy, and most bioplastics don't break down in home composts, landfills, or loose in the environment. To reduce your plastic footprint, you can switch to non-liquid soaps, carry a refillable bottle or mug for beverages, and bring reusable cloth bags to stores.
| Characteristics | Values |
|---|---|
| Recyclable plastics | Polyethylene Terephthalate (PET), Low-Density Polyethylene (LDPE), High-Density Polyethylene (HDPE) |
| Biodegradable plastics | Polybutylene Adipate Terephthalate (PBAT), Polybutylene Succinate (PBS), Polylactic Acid (PLA) |
| Bioplastics | PLA, PBAT, PBS |
| Eco-friendly alternatives | Pottery, ceramics, cardboard, glass, metal, paper, cloth, wood |
| Ways to reduce plastic use | Reuse, recycle, refuse single-use items, use refillable bottles, use cloth bags, use glass/metal/paper packaging |
| Issues with plastics | Toxic chemicals, environmental pollution, plastic waste, microplastics, health risks, low recycling rates |
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What You'll Learn
Biodegradable plastics
There are two classes of biodegradable plastics: bioplastics, which are derived from renewable raw materials, and plastics made from petrochemicals with biodegradable additives that enhance biodegradation. Bioplastics can be produced from a variety of sources, including plants, animals, or microorganisms. For example, polyhydroxyalkanoates (PHAs) are a class of biodegradable plastic naturally produced by various microorganisms. Specific types of PHAs include poly-3-hydroxybutyrate (PHB), polyhydroxyvalerate (PHV), and polyhydroxyhexanoate (PHH).
However, the use of biodegradable plastics has faced some challenges. Many biodegradable plastics are designed to degrade in industrial composting systems, which requires a well-managed waste system. If these plastics are not properly managed and end up in conventional waste streams or the natural environment, they may not break down as intended and contribute to pollution. Additionally, the disposal of plastic mulch films used in agriculture can be challenging, as they can fragment into microplastics, leading to soil pollution and potential contamination of water sources.
Furthermore, the recycling of biodegradable plastics has presented issues due to the need for separate recycling streams. Bioplastics like PLA and biodegradable petroleum-based plastics like PBS cannot be recycled through the same avenues as traditional plastics, leading to proper disposal problems as they may look similar. While compostable plastic is designed to be processed in composting facilities, it requires specific conditions like temperature and moisture to turn into usable soil.
In conclusion, biodegradable plastics offer a potential solution to the environmental impact of conventional plastics by providing alternatives for disposable items and short-term use applications. However, their effectiveness depends on proper waste management systems and responsible sourcing and disposal practices to ensure they break down as intended and do not contribute to pollution.
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Compostable plastics
The production of compostable plastics is more environmentally friendly than traditional plastics. For example, PLA, which is derived from corn, uses one-third of the energy to produce compared to traditional plastics, emits 70% less greenhouse gas when degrading in landfills, and reduces overall emissions by 25% or more.
However, compostable plastics are not always the great solution they seem to be. They are rarely made from 100% bio-based materials and can contain up to 80% fossil fuel-based plastic. Additionally, they may have an even greater environmental impact than their conventional plastic counterparts due to their lifetime impact and the heavy carbon footprint of producing compostable bioplastic packaging.
Furthermore, there is a lack of regulation for compostable plastics, with no federal standards or definitions in the United States. This leads to consumer confusion, as manufacturers can label products as compostable or biodegradable without meeting any standards.
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Eco-friendly plastics
The term "plastic" covers a wide range of materials, some of which are replaceable by eco-friendly alternatives. Eco-friendly plastics are biodegradable or compostable plastics made from natural substances such as seaweed, sugar beets, or other plants, instead of petroleum. Bioplastics like polylactic acid (PLA), derived from corn, are gaining acceptance among producers as they use less energy to produce and emit fewer greenhouse gases when degrading in landfills. However, it is important to note that not all bioplastics are biodegradable, and some petroleum-based plastics have additives to make them biodegradable.
Biodegradable plastics are designed to break down under controlled conditions in a laboratory, including factors such as oxygen levels, UV exposure, and temperature. However, nature does not provide such controlled conditions, so it is uncertain if biodegradable plastic will biodegrade if littered. Compostable plastics, on the other hand, are designed to be processed in either home or industrial composting facilities, where specific conditions enable their transformation into usable soil conditioners.
The end-of-life handling of eco-friendly plastics is still in its infancy, and most bioplastics require commercial composting facilities, which are not always accessible to consumers. Improper waste management of biodegradable plastics can lead to the same environmental consequences as their non-biodegradable counterparts, contributing to the plastic pollution crisis. Therefore, it is crucial to collect all plastics, including biodegradable and compostable types, and pair them with the right recovery systems to keep them out of nature.
To promote eco-friendliness, individuals can reduce their plastic consumption by reusing items and opting for alternatives like glass, metal, or unlined paper packaging. Additionally, individuals can switch to bar soaps, shampoo bars, and powder detergents in recyclable containers, reducing the waste from liquid soaps and detergents.
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Recycled plastics
The plastic pollution crisis is one of the most critical environmental challenges of the 21st century. Every year, over 380 million tons of plastic are produced, with only 9% being recycled. The rest ends up in landfills, litters landscapes, and pollutes our oceans.
The use of recycled plastic has significant environmental benefits. Every ton of recycled plastic saves 7.4 cubic yards of landfill space, 5,774 Kwh of energy, 16.3 barrels of oil, and 30 cubic yards of landfill space. Recycling plastic also saves 3.8 barrels of crude oil and 5,774 Kwh of energy for every ton recycled. Using recycled plastic to make new bottles uses 75% less energy than creating bottles from virgin plastic. Additionally, recycled plastic can be used to create innovative new products, such as sportswear made from ocean plastic.
However, it is important to note that the recycling process for eco-friendly plastics is not as simple as throwing them into a recycling bin. Bioplastics, such as PLA, and biodegradable plastics cannot be recycled through the same avenues as traditional plastics. They are meant to be composted in industrial composting facilities or sent to chemical recycling plants and anaerobic digesters.
To increase the use of recycled plastics and reduce plastic pollution, collective action is required from consumers, businesses, and governments. Consumers can reduce their plastic waste by avoiding single-use plastic items and opting for reusable alternatives. Businesses can increase the use of recycled content in their packaging, and governments can introduce bans and levies to curb single-use plastic waste. By working together, we can create a more sustainable future.
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Reusable plastics
Plastic is a popular material due to its unique properties, such as pliability, low density, low electrical conductivity, and toughness. However, the ever-increasing production and waste of plastic pose a serious environmental threat. As a result, there is a growing movement to eliminate single-use plastics and promote reusable and eco-friendly alternatives.
While reusable plastics reduce waste, they are not without drawbacks. Lifecycle assessments reveal that reusable plastic containers must be used repeatedly (up to 208 times) to have a smaller environmental impact than single-use options. Additionally, like single-use plastics, reusable plastics shed microplastics and leach chemicals, especially when exposed to heat or acidic food. These microplastics can have adverse health effects when ingested or inhaled.
To address these concerns, it is crucial to choose the right materials for reusable plastics. Stainless steel, aluminum, silicone, and glass are safer alternatives for food packaging and personal care products. These materials are durable and have a minimal environmental impact when reused.
Furthermore, the recycling process for reusable plastics is important. In the recycling process, 100% of the material is used, reducing waste. However, bioplastics, such as PLA, face challenges due to limited access to commercial composters, leading to improper degradation and landfill issues. Separate recycling streams for bioplastics may be necessary. Overall, a combination of reusable, recyclable, and biodegradable materials is key to reducing plastic waste and promoting environmental sustainability.
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Frequently asked questions
Biodegradable plastics are made from biobased sources such as seaweed, sugar beets, or other plants, instead of fossil fuels. They are designed to break down under controlled conditions in a lab, including factors such as oxygen levels, UV exposure, and temperatures. However, they may not always break down as intended in natural environments.
While biodegradable plastics are a step in the right direction, they are not a complete solution to the plastic pollution crisis. They often require specific conditions, such as those found in industrial composting facilities, to break down properly. Additionally, biodegradable plastics can contaminate recycling streams if they are not properly separated from traditional plastics.
Alternatives to plastic include glass, metal, unlined paper packaging, and fired ceramics. Reusable containers, cloth bags, and non-liquid soaps can also help reduce plastic waste.
To make plastic use more environmentally friendly, it is important to reduce, reuse, and recycle. Reusing plastic items instead of discarding them after single-use can help reduce the consumption of new plastic materials. Recycling plastic can also give it a new life in various products, such as packaging, clothing, and composite decking.
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