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Article

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Title

Biodegradation half-lives of biodiesel fuels in aquatic and terrestrial systems: A review

Authors

[ 1 ] Instytut Technologii i Inżynierii Chemicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ D ] phd student | [ SzD ] doctoral school student | [ P ] employee

Scientific discipline (Law 2.0)

[7.6] Chemical sciences

Year of publication

2023

Published in

Chemosphere

Journal year: 2023 | Journal volume: vol. 313

Article type

scientific article

Publication language

english

Keywords
EN
  • Biodiesel
  • Biofuels
  • Bioremediation
  • FAME
  • Impact assessment
  • Risk assessment
Abstract

EN Information on biodegradation kinetics of biodiesel fuels is a key aspect in current risk and impact assessment practice and in selection of appropriate remediation strategies. Unfortunately, this information is scattered, while factors influencing variability in biodegradation rates are still not fully understood. Therefore, we systematically reviewed 32 scientific literature sources providing 142 biodegradation and 56 mineralization half-lives of diesel and biodiesel fuels in various experimental systems. The analysis focused on the variability in half-lives across fuels and experimental conditions, reporting sets of averaged half-life values and their statistical uncertainty. Across all data points, biodegradation half-lives ranged from 9 to 62 days, and were 2–5.5 times shorter than mineralization half-lives. Across all fuels, biodegradation and mineralization half-lives were 2.5–8.5 times longer in terrestrial systems when compared to aquatic systems. The half-lives were generally shorter for blends with increasing biodiesel content, although averaging data from various experiments masked differences in half-lives between different fuels. This in most cases resulting in lack of statistically significant effects of the type of blends and experimental system. Our biodegradation kinetic data can be used for improved characterization of risks and impacts of biodiesel fuels in aerobic aquatic and terrestrial environments. Future experiments are required to quantify biodegradation kinetics in anaerobic conditions. Generally higher biodegradability of biodiesel fuels may suggest that passive approaches to degrade and dissipate biodiesel contaminants in situ, like monitored natural attenuation, may be appropriate remediation strategies for biodiesel blends.

Date of online publication

17.11.2022

Pages (from - to)

137236-1 - 137236-30

DOI

10.1016/j.chemosphere.2022.137236

URL

https://www.sciencedirect.com/science/article/pii/S0045653522037298

Comments

Article number: 137236

License type

CC BY (attribution alone)

Open Access Mode

czasopismo hybrydowe

Open Access Text Version

final published version

Release date

17.11.2022

Date of Open Access to the publication

at the time of publication

Full text of article

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Access level to full text

public

Ministry points / journal

140

Impact Factor

8,8 [List 2022]

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