Guiding Environmental Sustainability of Emerging Waste-Derived Sophorolipid Production By Adopting a Dynamic Life Cycle Assessment (dLCA) Approach

Research output: Conference PapersRGC 32 - Refereed conference paper (without host publication)peer-review

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Author(s)

  • Karpagam Subramanian
  • Sophie L.K.W. Roelants
  • Wim Soetaert
  • Guneet Kaur

Related Research Unit(s)

Detail(s)

Original languageEnglish
Publication statusPublished - Dec 2020

Conference

Title2nd Engineering Sustainable Development Conference
LocationVirtual
Period15 - 17 December 2020

Abstract

Microbial biosurfactants have been gaining attention as a potential replacement to synthetic surfactants as they can be produced from renewable feedstocks, have lower environmental toxicity and are highly biodegradable. Sophorolipids (SLs) are one such produced microbial glycolipid biosurfactants, representing the largest market share of the 27 billion USD global surfactant market. Though SL production is based on renewable feedstocks challenges concerning the production of electricity, enzymes, and materials that are primarily fossil based, still exist. From a scale-up perspective, it is imperative to quantify the environmental impacts associated with the SL production pathway and inform improvements at the research and development (R&D) stage, to facilitate commercial exploitation of these new generation biosurfactants. LCA is considered a powerful tool to evaluate environmental sustainability, its application of emerging technologies is different and is challenged with problems like data scarcity and rapid changes in the technology itself. This study adopts a dynamic LCA (dLCA) framework consisting of two traversals that emphasizes iterative evaluations and collaborative efforts with the experimentalists to tackle these problems. The dLCA framework is used to analyze SL production from organic waste streams, identify hotspots, derive recommendations to reduce environmental impacts at lab scale, to avoid unintended consequences while scaling up. LCA in the rst traversal identied food waste as the most suitable feedstock. After accounting for experimental results with food waste as feedstock, two separation technologies were evaluated in the second traversal to nd out that fed batch fermentation integrated with in-situ separation resulted in lesser environmental impacts compared to conventional separation technique. Results obtained from each traversal will inform the experimentalists to optimize those processes, resultant data sets can be iteratively used in subsequent traversals to account for the technological changes and mitigate the impacts before scaling up. 

Bibliographic Note

Research Unit(s) information for this publication is provided by the author(s) concerned.

Citation Format(s)

Guiding Environmental Sustainability of Emerging Waste-Derived Sophorolipid Production By Adopting a Dynamic Life Cycle Assessment (dLCA) Approach. / Hu, Xiaomeng; Subramanian, Karpagam; Wang, Huaimin et al.
2020. Paper presented at 2nd Engineering Sustainable Development Conference.

Research output: Conference PapersRGC 32 - Refereed conference paper (without host publication)peer-review