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Solution or Pollution? A paradigm shifts in understanding the fate and threats of biodegradable plastics in the marine environment

Journal of Hazardous Materials Advances 2025 1 citation ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 53 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Tan Suet May Amelia, Tan Suet May Amelia, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Tan Suet May Amelia, Kala Senathirajah, Kala Senathirajah, Tan Suet May Amelia, Seng Hon Kee, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Tan Suet May Amelia, Seeram Ramakrishna, Kesaven Bhubalan Kesaven Bhubalan Yi Ta Shao, Yi Ta Shao, Seeram Ramakrishna, Seeram Ramakrishna, Seeram Ramakrishna, Seeram Ramakrishna, Kesaven Bhubalan Yi Ta Shao, Yi Ta Shao, Kala Senathirajah, Kala Senathirajah, Kala Senathirajah, Nurul Afifah Mohd Ridzuan, Kesaven Bhubalan Nurul Afifah Mohd Ridzuan, Kesaven Bhubalan Sevakumaran Vigneswari, Kesaven Bhubalan Aina Syafiqah Azmeerizal, Aina Syafiqah Azmeerizal, Kesaven Bhubalan Sevakumaran Vigneswari, Rajamani Lakshiminarayanan, Rajamani Lakshiminarayanan, Sevakumaran Vigneswari, Kesaven Bhubalan Seeram Ramakrishna, Seeram Ramakrishna, Kesaven Bhubalan

Summary

This review challenges the assumption that biodegradable plastics are inherently eco-friendly by examining their degradation behavior in marine environments. Researchers found that biodegradable plastics often require specific conditions to break down and can themselves become sources of microplastic pollution when those conditions are not met. The study highlights a significant research gap in understanding the fate of biodegradable nano- and pico-plastics in marine ecosystems.

• Microplastic pollution may result from the decomposition of biodegradable polymers • Biodegradation mechanisms of biodegradable plastics are crucial. • Biodegradation depend on plastisphere and external environmental conditions Biodegradable plastics are proven to degrade faster and are thus presented as more eco-friendly than traditional plastics. However, certain environmental concerns—such as the need for specific conditions to biodegrade—may contribute to microplastic pollution. Understanding the degradation of biodegradable plastics is essential for developing effective waste management strategies and mitigating their environmental impacts. This review aims to provide a comprehensive overview of the degradation and toxicity mechanisms of biodegradable plastics, while identifying and emphasizing their potential fates and threats in marine environments. It is also important to acknowledge that the extent of biodegradation and the efficiency of biodegradable plastics in reducing environmental pollution are strongly influenced by factors such as microbial activity, oxygen, temperature, humidity, ultraviolet radiation, pH, and the physicochemical properties of the plastics. This review highlights the research gap in fully understanding the degradation mechanisms and fate of biodegradable nano- and even pico-plastics, which is crucial for developing effective solutions to manage plastic waste in estuarine ecosystems.

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