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61,005 resultsShowing papers similar to Anaerobic Degradability of Commercially Available Bio-Based and Oxo-Degradable Packaging Materials in the Context of their End of Life in the Waste Management Strategy
ClearDegradation of supposedly biodegradable polymers in a real estuarine environment
Researchers tested the real-world degradation of supposedly biodegradable polymer bags in an estuarine environment over 180 days. The study found that bags made of PLA combined with PBAT and starch showed the most consistent degradation, while polyethylene bags with oxo-biodegradable additives and plain polyethylene showed minimal breakdown, questioning the effectiveness of some biodegradable alternatives in natural settings.
Degradation of Bioplastics Under the Influence of Several Environmental Conditions
This study tested how different environmental conditions affect the degradation of bioplastics made from starch and glycerol. While bioplastics are marketed as eco-friendly alternatives to conventional plastics, this research examines whether they actually break down effectively in real-world conditions rather than only in controlled composting settings.
Degradation of Plastics in Simulated Landfill Conditions
Researchers exposed high-density polyethylene, oxo-degradable polyethylene, and certified compostable plastics to simulated landfill conditions for 854 days and found that only compostable plastic degraded substantially, while oxo-degradable plastic showed minimal improvement over standard HDPE under anaerobic landfill conditions.
Comparison of the aerobic biodegradation of biopolymers and the corresponding bioplastics: A review
Researchers compared how quickly biodegradable bioplastics break down in soil versus their natural parent materials — like starch, cellulose, and lignin — finding that chemical modifications made during manufacturing significantly change which microbes and enzymes are needed for degradation. The review concludes that lab-based biodegradation studies often miss real-world complexity, and long-term field experiments are urgently needed to validate biodegradability claims for bioplastics.
Microplastic Generation and Persistence of Biodegradable Plastics under Anaerobic Conditions
Scientists tested how well "biodegradable" plastics actually break down in oxygen-free environments like landfills and found that many don't degrade as expected. Instead, several types of these supposedly eco-friendly plastics break apart into tiny plastic particles called microplastics that stick around for a long time. This matters because these microplastics can end up in our food and water, and we're still learning about their potential health effects.
Rigid and film bioplastics degradation under suboptimal composting conditions: A kinetic study
This study examined how well bioplastics — including PLA and starch-based film bags — degrade in home composting conditions that may not reach optimal temperatures, finding that film bioplastics degraded completely within 60 days but rigid PLA items would require 2-3 years at suboptimal conditions. These results highlight the gap between biodegradable plastic claims and real-world composting performance.
Degradation of Biodegradable Single-use Plates and Waste Bags in Terrestrial and Marine Environments
Field experiments found that biodegradable single-use plates and waste bags degraded at very different rates depending on material and environment, with some lasting far longer than expected. Products labeled as biodegradable may still persist and fragment into microplastics in natural marine and terrestrial conditions.
Analysis of the microplastic emission potential of a starch-based biodegradable plastic material
Researchers developed a method to assess the microplastic emission potential of biodegradable starch-based plastics under environmental conditions, finding that even materials labeled biodegradable can fragment into persistent microplastic particles depending on environmental degradation pathways.
The degradation of single-use plastics and commercially viable bioplastics in the environment: A review
Researchers reviewed how conventional single-use plastics degrade over decades in natural environments versus how bioplastics biodegrade, finding that while alternatives like PBS and PHA show genuine biodegradation potential, most require specific industrial composting conditions that are rarely available in practice.
Biorefining of Thermoplastic Starch via Depolymerization and Methane Arrested Anaerobic Digestion
This study explored whether biodegradable thermoplastic starch packaging could be broken down into useful chemicals through a combination of heat treatment and anaerobic digestion. Higher temperatures accelerated breakdown but also produced microplastics, as the material contains PBAT and PLA plastic co-polymers. The work highlights a tension in biodegradable plastic design: materials marketed as eco-friendly can still generate microplastic fragments and resist full biological conversion without specialized industrial processing.
Generation of Microplastics from Biodegradable Packaging Films Based on PLA, PBS and Their Blend in Freshwater and Seawater
Researchers studied how biodegradable plastic films made from PLA, PBS, and their blends break down in freshwater and seawater over several months. All films generated microplastic particles as they degraded, with different water environments producing different amounts and types of fragments. This study challenges the idea that biodegradable plastics are a clean solution, since they still create microplastics during breakdown in natural water systems.
Numerical framework for anaerobic digestion and/or composting of bioplastics and organic waste performance evaluation under real-like large scale operating conditions
Researchers used computer modeling to simulate how well certified biodegradable plastics — including PLA cups and starch-based bags — actually break down in real anaerobic digestion and composting facilities, finding that industrial composting alone only degrades 42–44% of PLA in 28 days. The study warns that current waste infrastructure may not be sufficient to handle the growing volumes of bioplastics, potentially leading to microplastic-like contamination of compost and soil.
Review on the Biological Degradation of Polymers in Various Environments
This review provides an overview of how biodegradable plastics degrade under different environmental conditions including soil, freshwater, marine, and composting environments. It finds that biodegradability is a material property strongly dependent on environmental conditions, and that many so-called biodegradable plastics degrade far more slowly in nature than in controlled test conditions.
Fate of polylactic acid microplastics during anaerobic digestion of kitchen waste: Insights on property changes, released dissolved organic matters, and biofilm formation
Polylactic acid (PLA) microplastics were tracked through the anaerobic digestion of kitchen waste, revealing that PLA particles underwent surface changes and released dissolved organic matter but were not fully degraded during the process. The study shows that even supposedly biodegradable plastics can persist and alter biofilm formation in anaerobic digestion systems.
Degradation of Film and Rigid Bioplastics During the Thermophilic Phase and the Maturation Phase of Simulated Composting
Researchers tested how well commercially certified compostable bioplastics (starch-based, PBAT, and PLA) actually degrade under realistic industrial composting conditions, finding that PLA degradation was highly sensitive to both plastic thickness and the duration of the high-temperature composting phase. The results suggest that current industrial composting timelines may be insufficient to fully break down certified compostable plastics, raising questions about real-world end-of-life claims.
Anaerobic Degradation of Aromatic and Aliphatic Biodegradable Plastics: Potential Mechanisms and Pathways.
This study examined how biodegradable plastics — PBAT and PLA — break down under anaerobic conditions in digestion systems, finding that microbial communities degrade them through distinct biochemical pathways. Understanding how biodegradable plastics decompose in real-world conditions like landfills and wastewater treatment is important for evaluating whether they truly degrade safely.
Investigating the Fate of Bio-based Plastics in Anaerobic Digestion
This study tested the breakdown of three types of bio-based food packaging plastics in anaerobic digesters over 26 weeks, assessing how well they degrade under conditions similar to industrial composting. Understanding whether bio-based plastics truly break down in real waste treatment settings is critical to evaluating their environmental claims.
Behind the Green Promise: Eco-Innovation or Commercial Illusion?
This review critically examines the gap between the environmental promise of biodegradable packaging materials such as polylactic acid and polybutylene succinate and their real-world degradation performance. The authors found that most biodegradable plastics require specific industrial composting conditions to degrade as marketed and may perform no better than conventional plastics when disposed of in landfill, soil, or marine environments.
Biodegradability standards for carrier bags and plastic films in aquatic environments: a critical review
Researchers critically reviewed existing biodegradability standards for carrier bags and plastic films in aquatic environments and found that current testing protocols do not adequately reflect real-world marine or freshwater conditions. The study suggests that labeling plastics as "biodegradable" may be misleading, since degradation rates vary dramatically depending on temperature, oxygen levels, and microbial communities present in natural water bodies.
Existing Scenario and Environmental Significance of Biodegradable Plastics: A Review for a Sustainable Future
This review examines the current status of biodegradable plastics derived from renewable sources (starch, PLA, PHA), covering production methods, degradation behavior, and their real-world performance as alternatives to petroleum-based plastics in reducing landfill burden and marine microplastic pollution.
Biodegradation in Soil of Commercial Plastic Bags Labelled as “Biodegradable”
Researchers tested five commercially sold 'biodegradable' plastic bags in soil burial and UV weathering experiments, finding that polyester-based bags degraded more readily than polyolefin-based ones, which showed minimal actual biodegradation under realistic environmental conditions.
Short-term fragmentation of single-use plastic carrier bags in natural environment
This study monitored the short-term fragmentation of single-use plastic bags — including conventional polyethylene, cassava bioplastic, oxo-biodegradable, and compostable plastics — when left in natural outdoor environments. Results showed that even so-called biodegradable alternatives did not break down reliably in real-world conditions, potentially generating microplastics rather than fully degrading.
Biodegradable Bioplastics: A Review of State-of-the-Art, Challenges, and Future Directions
This review covers the current state, challenges, and future directions for biodegradable bioplastics derived from organic sources like starch and cellulose. While bioplastics are promoted as alternatives to conventional plastics, not all fully break down in natural environments, meaning some can still generate microplastic fragments.
Composting of starch-based bioplastic bags: small scale test of degradation and size reduction trend
Small-scale composting experiments showed that starch-based bioplastic bags degraded physically and chemically over time, but the pace and completeness depended on conditions. The study addresses concerns that bioplastic bags used in food waste collection may not fully break down in composting facilities, potentially leaving plastic residue in compost.