What are Bioplastics? Bioplastics are biodegradable and, in some cases, compostable plastics derived from renewable raw materials such as starch from corn, potato, tapioca, or other plants and vegetables, combined with biodegradable polymers, to create products that reduce the impact on the environment in absolute carbon footprint terms. Bioplastics are designed to biodegrade via natural processes. Traditional plastic bags and food containers require great amounts of energy and raw materials (natural gas, oil and coal) to produce and recycle. Only approximately 1-3% of plastic bags are recycled and plastics in our landfills take hundreds or thousands of years to degrade and hurt our environment by leaching toxins. The time needed to degrade or compost bioplastics varies and it is important to make distinctions between biodegradable and compostable. Compostable: Biodegradable material that includes both organic and inorganic material which produces compost in a commercially controlled composting facility. Requirements for Compostable Bioplastics: · Must meet the ASTM D6400 standard: must decompose at a rate of 90% in 90 days and 100% in 180 days. · Requires an Aerobic (with oxygen) environment to biodegrade. Mixed with common items such as food scraps, yard trimmings, paper, etc. to make compost for growing food (e.g. soilmass). Why it makes sense: diverts food / food scraps, yard trimmings, paper and other compostable materials from the landfill. Compostable bioplastics can be made from 100% organic material. · PLA is 100% biomass polymer. Compostable bioplastics can be made from 100% inorganic material. · Ecoflex by BASF and PBS by Showa High Polymer are both certified by the BPI according to ASTM D6400 standard as compostable but are 100% petroleum based. (See: Biodegradable Products Institute) Therefore sustainability and compostability are not synonymous. Limitations: · ASTM D6400 certified and BPI approved bioplastics specifically require a commercial composting facility to decompose. They are not designed to compost or biodegrade in a landfill or in a consumer’s compost bin. There are only about 113 commercial compost facilities in the US. Roughly only 28 accept food scraps and PLA. Backyard composts cannot degrade PLA, generally. · Many compostable plastics do not degrade into organic matter; hence there is no compost at the end of the cycle of composting. At the end of decomposition, only H20 and CO2 are released into the atmosphere and, in some cases, heavy metals residue will remain in the compost, which can enter the food supply. Biodegradable: Biodegradable material that includes both organic and inorganic material which decomposes in both anaerobic and aerobic conditions. All BioEarth products are biodegradable. Requirements for Biodegradable Bioplastics: · Capable of being broken down aerobically or anaerobically (without oxygen) by the action of living organisms under natural conditions over varying time intervals. · Biodegradation can include many different types of supporting processing: 1) thermal degradation, 2) oxidegradation, 3) hydrolization, 4) mineralization. Why it makes sense: products deposited in a landfill will completely decompose and disappear within a reasonable amount of time, leaving no harmful residues. Similarly, can be bio-digested more quickly than bioplastics can be composted, insuring that no greenhouses gasses escape during decomposition (Trellis is working to deploy this option, initially in the Pacific Northwest, as well as other co-generation and recycling options.) TOP Limitations: · Different materials in different conditions biodegrade at different rates and therefore the term is used much more broadly than the term compostable. · Decomposition time: No time interval standard exists for biodegradation today. Trellis film products (bags, etc.) are designed to biodegrade in ~6-12 months, and deliware and cutlery in 12-36 months, or in less than 1 month in a biodigestor. · Gasses released, including methane, need to be captured, as they generally are, to not contribute to global warming, which is standard procedure for most landfills and all biodigestors. Reducing petroleum resources in packaging reduces our consumption of oil, which is a primary objective of BioEarth’s product line – which is the objective of sustainability. addresses both sustainability and the desire of consumers and municipalities to have toxin-free, zero waste management programs that are “earth friendly” and thereby helps food service companies lower their carbon footprint. BioEarth makes a complete line of biodegradable bags, cutlery and deliware. engineers its products to: · Contain as much biomass as possible, and · Biodegrade 100% in the anaerobic conditions of a landfill or in a biodigestor. BioEarth addresses both sustainability and the desire of consumers and municipalities to have toxin-free, zero waste management programs that are “earth friendly” – which is the objective of sustainability. BioEarth product benefits: · High heat tolerance – does not breakdown in transit or in use. · Non GMO corn used (grown and harvested in China for non-food product manufacturing) · FDA certified · Priced to compete with conventional products to ease commercial consumer adoption. We accomplish these objectives by blending our resins with a mix of biologically produced polymers (e.g. PLA), biomass fillers (plant starches) and biodegradable polymers (shortened molecular length polymers specifically designed to easily succumb to microbiological activity). We also add patented proteins that accelerate anaerobic biodegradation and the polymeric breakdown that precedes biodegradation. Many critics of biodegradable plastics technology are not familiar with this technology and are only disparaging old technology when they denounce efforts to introduce biodegradability via anaerobic microbiological activity. BioEarth is working with industry leaders and consultants to promote a method of testing the rates of biodegradation of bioplastics that can be adopted by the food packaging industry and give consumers confidence that, in the modern landfill environment, Trellis products are not a long term contributor to landfill volume. |